diff --git a/Downstream/.cproject b/Downstream/.cproject
new file mode 100644
index 0000000..3c70d1b
--- /dev/null
+++ b/Downstream/.cproject
@@ -0,0 +1,312 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Downstream/.gitignore b/Downstream/.gitignore
new file mode 100644
index 0000000..ac01e66
--- /dev/null
+++ b/Downstream/.gitignore
@@ -0,0 +1,2 @@
+/Debug/
+/Release/
diff --git a/Downstream/.project b/Downstream/.project
new file mode 100644
index 0000000..d053b40
--- /dev/null
+++ b/Downstream/.project
@@ -0,0 +1,26 @@
+
+
+ Downstream
+
+
+
+
+ org.eclipse.cdt.managedbuilder.core.genmakebuilder
+ clean,full,incremental,
+
+
+
+
+ org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder
+ full,incremental,
+
+
+
+
+
+ org.eclipse.cdt.core.cnature
+ org.eclipse.cdt.managedbuilder.core.managedBuildNature
+ org.eclipse.cdt.managedbuilder.core.ScannerConfigNature
+
+
diff --git a/Downstream/.settings/language.settings.xml b/Downstream/.settings/language.settings.xml
new file mode 100644
index 0000000..855a758
--- /dev/null
+++ b/Downstream/.settings/language.settings.xml
@@ -0,0 +1,25 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Downstream/.settings/org.eclipse.cdt.codan.core.prefs b/Downstream/.settings/org.eclipse.cdt.codan.core.prefs
new file mode 100644
index 0000000..ff135cf
--- /dev/null
+++ b/Downstream/.settings/org.eclipse.cdt.codan.core.prefs
@@ -0,0 +1,71 @@
+eclipse.preferences.version=1
+org.eclipse.cdt.codan.checkers.errnoreturn=Warning
+org.eclipse.cdt.codan.checkers.errnoreturn.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},implicit\=>false}
+org.eclipse.cdt.codan.checkers.errreturnvalue=Error
+org.eclipse.cdt.codan.checkers.errreturnvalue.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.checkers.nocommentinside=-Error
+org.eclipse.cdt.codan.checkers.nocommentinside.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.checkers.nolinecomment=-Error
+org.eclipse.cdt.codan.checkers.nolinecomment.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.checkers.noreturn=Error
+org.eclipse.cdt.codan.checkers.noreturn.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},implicit\=>false}
+org.eclipse.cdt.codan.internal.checkers.AbstractClassCreation=Error
+org.eclipse.cdt.codan.internal.checkers.AbstractClassCreation.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.AmbiguousProblem=Error
+org.eclipse.cdt.codan.internal.checkers.AmbiguousProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.AssignmentInConditionProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.AssignmentInConditionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.AssignmentToItselfProblem=Error
+org.eclipse.cdt.codan.internal.checkers.AssignmentToItselfProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.CaseBreakProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.CaseBreakProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},no_break_comment\=>"no break",last_case_param\=>false,empty_case_param\=>false}
+org.eclipse.cdt.codan.internal.checkers.CatchByReference=Warning
+org.eclipse.cdt.codan.internal.checkers.CatchByReference.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},unknown\=>false,exceptions\=>()}
+org.eclipse.cdt.codan.internal.checkers.CircularReferenceProblem=Error
+org.eclipse.cdt.codan.internal.checkers.CircularReferenceProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.ClassMembersInitialization=Warning
+org.eclipse.cdt.codan.internal.checkers.ClassMembersInitialization.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},skip\=>true}
+org.eclipse.cdt.codan.internal.checkers.FieldResolutionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.FieldResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.FunctionResolutionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.FunctionResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.InvalidArguments=Error
+org.eclipse.cdt.codan.internal.checkers.InvalidArguments.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.InvalidTemplateArgumentsProblem=Error
+org.eclipse.cdt.codan.internal.checkers.InvalidTemplateArgumentsProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.LabelStatementNotFoundProblem=Error
+org.eclipse.cdt.codan.internal.checkers.LabelStatementNotFoundProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.MemberDeclarationNotFoundProblem=Error
+org.eclipse.cdt.codan.internal.checkers.MemberDeclarationNotFoundProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.MethodResolutionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.MethodResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.NamingConventionFunctionChecker=-Info
+org.eclipse.cdt.codan.internal.checkers.NamingConventionFunctionChecker.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},pattern\=>"^[a-z]",macro\=>true,exceptions\=>()}
+org.eclipse.cdt.codan.internal.checkers.NonVirtualDestructorProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.NonVirtualDestructorProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.OverloadProblem=Error
+org.eclipse.cdt.codan.internal.checkers.OverloadProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.RedeclarationProblem=Error
+org.eclipse.cdt.codan.internal.checkers.RedeclarationProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.RedefinitionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.RedefinitionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.ReturnStyleProblem=-Warning
+org.eclipse.cdt.codan.internal.checkers.ReturnStyleProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.ScanfFormatStringSecurityProblem=-Warning
+org.eclipse.cdt.codan.internal.checkers.ScanfFormatStringSecurityProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.StatementHasNoEffectProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.StatementHasNoEffectProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true,exceptions\=>()}
+org.eclipse.cdt.codan.internal.checkers.SuggestedParenthesisProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.SuggestedParenthesisProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},paramNot\=>false}
+org.eclipse.cdt.codan.internal.checkers.SuspiciousSemicolonProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.SuspiciousSemicolonProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},else\=>false,afterelse\=>false}
+org.eclipse.cdt.codan.internal.checkers.TypeResolutionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.TypeResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
+org.eclipse.cdt.codan.internal.checkers.UnusedFunctionDeclarationProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.UnusedFunctionDeclarationProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true}
+org.eclipse.cdt.codan.internal.checkers.UnusedStaticFunctionProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.UnusedStaticFunctionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true}
+org.eclipse.cdt.codan.internal.checkers.UnusedVariableDeclarationProblem=Warning
+org.eclipse.cdt.codan.internal.checkers.UnusedVariableDeclarationProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true},macro\=>true,exceptions\=>("@(\#)","$Id")}
+org.eclipse.cdt.codan.internal.checkers.VariableResolutionProblem=Error
+org.eclipse.cdt.codan.internal.checkers.VariableResolutionProblem.params={launchModes\=>{RUN_ON_FULL_BUILD\=>true,RUN_ON_INC_BUILD\=>true,RUN_ON_FILE_OPEN\=>false,RUN_ON_FILE_SAVE\=>false,RUN_AS_YOU_TYPE\=>true,RUN_ON_DEMAND\=>true}}
diff --git a/Downstream/.settings/org.eclipse.cdt.managedbuilder.core.prefs b/Downstream/.settings/org.eclipse.cdt.managedbuilder.core.prefs
new file mode 100644
index 0000000..3c47024
--- /dev/null
+++ b/Downstream/.settings/org.eclipse.cdt.managedbuilder.core.prefs
@@ -0,0 +1,21 @@
+eclipse.preferences.version=1
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/CPATH/delimiter=\:
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/CPATH/operation=remove
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/C_INCLUDE_PATH/delimiter=\:
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/C_INCLUDE_PATH/operation=remove
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/append=true
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/appendContributed=true
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/CPATH/delimiter=\:
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/CPATH/operation=remove
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/C_INCLUDE_PATH/delimiter=\:
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/C_INCLUDE_PATH/operation=remove
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/append=true
+environment/buildEnvironmentInclude/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/appendContributed=true
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/LIBRARY_PATH/delimiter=\:
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/LIBRARY_PATH/operation=remove
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/append=true
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.debug.110983800/appendContributed=true
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/LIBRARY_PATH/delimiter=\:
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/LIBRARY_PATH/operation=remove
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/append=true
+environment/buildEnvironmentLibrary/ilg.gnuarmeclipse.managedbuild.cross.config.elf.release.1300395207/appendContributed=true
diff --git a/Downstream/Downstream Debug OCD STLink.launch b/Downstream/Downstream Debug OCD STLink.launch
new file mode 100644
index 0000000..4c08dde
--- /dev/null
+++ b/Downstream/Downstream Debug OCD STLink.launch
@@ -0,0 +1,64 @@
+
+
+
+
+
+
+
+
+
diff --git a/Downstream/Downstream Debug.launch b/Downstream/Downstream Debug.launch
new file mode 100644
index 0000000..13d08c4
--- /dev/null
+++ b/Downstream/Downstream Debug.launch
@@ -0,0 +1,64 @@
+
+
+
+
+
+
+
+
+
diff --git a/Downstream/Downstream Release.launch b/Downstream/Downstream Release.launch
new file mode 100644
index 0000000..7b86390
--- /dev/null
+++ b/Downstream/Downstream Release.launch
@@ -0,0 +1,64 @@
+
+
+
+
+
+
+
+
+
diff --git a/Downstream/Inc/board_config.h b/Downstream/Inc/board_config.h
new file mode 100644
index 0000000..cb27120
--- /dev/null
+++ b/Downstream/Inc/board_config.h
@@ -0,0 +1,61 @@
+/*
+ * board_config.h
+ *
+ * Created on: 25/03/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+
+#ifndef INC_BOARD_CONFIG_H_
+#define INC_BOARD_CONFIG_H_
+
+
+#define BSRR_SHIFT_HIGH 0
+#define BSRR_SHIFT_LOW 16
+
+#define PA_JTMS GPIO_PIN_13
+#define PA_JTCK GPIO_PIN_14
+#define PA_JTDI GPIO_PIN_15
+#define PB_JTDO GPIO_PIN_3
+#define PB_NJTRST GPIO_PIN_4
+
+#define FAULT_LED_PIN GPIO_PIN_13
+#define FAULT_LED_PORT GPIOC
+#define FAULT_LED_ON (FAULT_LED_PORT->BSRR = (FAULT_LED_PIN << BSRR_SHIFT_LOW)) //Fault LED is active-low
+#define FAULT_LED_OFF (FAULT_LED_PORT->BSRR = (FAULT_LED_PIN << BSRR_SHIFT_HIGH))
+
+#define H405_FAULT_LED_PIN GPIO_PIN_12 //Fault LED on Olimex H405 board
+#define H405_FAULT_LED_ON (FAULT_LED_PORT->BSRR = (H405_FAULT_LED_PIN << BSRR_SHIFT_LOW))
+
+#define INT_ACTIVE_PIN GPIO_PIN_2 //Temporary indicator of SPI (or whatever) activity
+#define INT_ACTIVE_PORT GPIOA
+#define INT_ACTIVE_ON INT_ACTIVE_PORT->BSRR = (INT_ACTIVE_PIN << BSRR_SHIFT_HIGH)
+#define INT_ACTIVE_OFF INT_ACTIVE_PORT->BSRR = (INT_ACTIVE_PIN << BSRR_SHIFT_LOW)
+
+//#define SPI1_NSS_PIN GPIO_PIN_4
+//#define SPI1_NSS_PORT GPIOA
+
+#define UPSTREAM_TX_REQUEST_PIN GPIO_PIN_3
+#define UPSTREAM_TX_REQUEST_PORT GPIOA
+#define UPSTREAM_TX_REQUEST_ASSERT (UPSTREAM_TX_REQUEST_PORT->BSRR = (UPSTREAM_TX_REQUEST_PIN << BSRR_SHIFT_LOW))
+#define UPSTREAM_TX_REQUEST_DEASSERT (UPSTREAM_TX_REQUEST_PORT->BSRR = (UPSTREAM_TX_REQUEST_PIN << BSRR_SHIFT_HIGH))
+
+#define DBGMCU_IDCODE_DEV_ID_405_407_415_417 0x413
+#define DBGMCU_IDCODE_DEV_ID_401xB_xC 0x423
+
+#define BOARD_REV_PIN_MASK 0xE000
+#define BOARD_ID_PIN_MASK 0x1000
+#define BOARD_REV_ID_PORT GPIOB
+
+#define BOARD_REV_1_0_BETA 0
+#define BOARD_REV_1_0_BETA_3 1
+
+#define BOARD_REV_1_0_BETA_FREQ 8
+#define BOARD_REV_1_0_BETA_3_FREQ 16
+
+
+#endif /* INC_BOARD_CONFIG_H_ */
diff --git a/Downstream/Inc/build_config.h b/Downstream/Inc/build_config.h
new file mode 100644
index 0000000..fe59f08
--- /dev/null
+++ b/Downstream/Inc/build_config.h
@@ -0,0 +1,29 @@
+/*
+ * build_config.h
+ *
+ * Created on: Jun 20, 2017
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_BUILD_CONFIG_H_
+#define INC_BUILD_CONFIG_H_
+
+
+#define CONFIG_MASS_STORAGE_ENABLED
+#define CONFIG_MASS_STORAGE_WRITES_PERMITTED
+
+#define CONFIG_KEYBOARD_ENABLED
+#define CONFIG_MOUSE_ENABLED
+
+#define CONFIG_READ_FLASH_TIME_MS 3000 //Enable read LED flashes for the specified length of time
+
+#define CONFIG_USB_ID_ENABLED
+
+#define CONFIG_FLASH_RDP_ENABLE
+
+
+#endif /* INC_BUILD_CONFIG_H_ */
diff --git a/Downstream/Inc/downstream_hid.h b/Downstream/Inc/downstream_hid.h
new file mode 100644
index 0000000..bd559cf
--- /dev/null
+++ b/Downstream/Inc/downstream_hid.h
@@ -0,0 +1,70 @@
+/*
+ * downstream_hid.h
+ *
+ * Created on: Apr 10, 2016
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_HID_H_
+#define INC_DOWNSTREAM_HID_H_
+
+
+#include "downstream_interface_def.h"
+#include "downstream_spi.h"
+#include "usbh_def.h"
+
+
+#define HID_MAX_REPORT_LEN 8
+
+//These defines are duplicated in upstream_hid.h. Keep them in sync!
+#define HID_MOUSE_INPUT_DATA_LEN 4
+#define HID_MOUSE_OUTPUT_DATA_LEN 0
+#define HID_MOUSE_MAX_BUTTONS 3
+
+#define HID_KEYBOARD_INPUT_DATA_LEN 8
+#define HID_KEYBOARD_OUTPUT_DATA_LEN 1
+#define HID_KEYBOARD_MAX_KEY 101 //Also set in Upstream's HID report descriptor
+#define HID_KEYBOARD_MAX_LED 3
+
+
+//Stuff for parsing HID descriptors:
+#define HID_ITEM_LONG 0xFC
+#define HID_ITEM_MASK 0xFC
+#define HID_ITEM_LENGTH_MASK 0x03
+
+#define HID_ITEM_USAGE_PAGE 0x04 //'global' usage page
+#define HID_ITEM_USAGE_PAGE_BUTTON 0x09
+#define HID_ITEM_USAGE_PAGE_DESKTOP 0x01
+
+#define HID_ITEM_COLLECTION 0xA0
+#define HID_ITEM_COLLECTION_PHYS 0x00
+#define HID_ITEM_END_COLLECTION 0xC0
+
+#define HID_ITEM_USAGE 0x08 //'local' usage
+#define HID_ITEM_USAGE_X 0x30
+#define HID_ITEM_USAGE_Y 0x31
+#define HID_ITEM_USAGE_WHEEL 0x38
+
+#define HID_ITEM_REPORT_SIZE 0x74 //'global' report size
+#define HID_ITEM_REPORT_COUNT 0x94 //'global' report count
+#define HID_ITEM_REPORT_ID 0x84
+
+#define HID_ITEM_INPUT 0x80 //'main' input
+#define HID_ITEM_INPUT_ABS 0x02
+#define HID_ITEM_INPUT_REL 0x06
+
+
+typedef void (*TransactionCompleteCallbackTypeDef)(USBH_StatusTypeDef result);
+
+InterfaceCommandClassTypeDef Downstream_HID_ApproveConnectedDevice(void);
+void Downstream_HID_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
+void Downstream_HID_InterruptReportCallback(USBH_StatusTypeDef result);
+void Downstream_HID_SendReportCallback(USBH_StatusTypeDef result);
+
+
+
+#endif /* INC_DOWNSTREAM_HID_H_ */
diff --git a/Downstream/Inc/downstream_interface_def.h b/Downstream/Inc/downstream_interface_def.h
new file mode 100644
index 0000000..eec61a8
--- /dev/null
+++ b/Downstream/Inc/downstream_interface_def.h
@@ -0,0 +1,77 @@
+/*
+ * downstream_interface_def.h
+ *
+ * Created on: 24/07/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_INTERFACE_DEF_H_
+#define INC_DOWNSTREAM_INTERFACE_DEF_H_
+
+
+//***************
+// Attention!
+// Keep this file synchronised with upstream_interface_def.h
+// in the Upstream project.
+//***************
+
+
+
+#define COMMAND_CLASS_DATA_FLAG 0x80
+#define COMMAND_CLASS_MASK ((uint8_t)(~COMMAND_CLASS_DATA_FLAG))
+
+
+typedef enum
+{
+ COMMAND_CLASS_INTERFACE,
+ COMMAND_CLASS_MASS_STORAGE,
+ COMMAND_CLASS_HID_MOUSE,
+ COMMAND_CLASS_HID_KEYBOARD,
+ //...
+ COMMAND_CLASS_ERROR
+}
+InterfaceCommandClassTypeDef;
+
+
+typedef enum
+{
+ COMMAND_INTERFACE_ECHO, //Returns echo packet including all data
+ COMMAND_INTERFACE_NOTIFY_DEVICE //Returns COMMAND_CLASS_*** byte when downstream USB device is connected
+}
+InterfaceCommandInterfaceTypeDef;
+
+
+typedef enum
+{
+ COMMAND_MSC_TEST_UNIT_READY, //Returns HAL_StatusTypeDef result
+ COMMAND_MSC_GET_CAPACITY, //Returns uint32_t blk_nbr, uint32_t blk_size
+ COMMAND_MSC_READ, //Returns data stream or error packet
+ COMMAND_MSC_WRITE, //Waits for data stream or returns error packet
+ COMMAND_MSC_DISCONNECT, //Returns same packet after sending Stop command to device
+ COMMAND_MSC_POLL_DISCONNECT //Returns same packet if device is still connected
+}
+InterfaceCommandMscTypeDef;
+
+
+typedef enum
+{
+ COMMAND_HID_GET_REPORT, //Returns HID report from device
+ COMMAND_HID_SET_REPORT //Sends HID report to device. Simple ack packet contains no data.
+}
+InterfaceCommandHidTypeDef;
+
+
+typedef enum
+{
+ COMMAND_ERROR_GENERIC, //Something went wrong, time to FREAKOUT
+ COMMAND_ERROR_DEVICE_DISCONNECTED, //Device unexpectedly disconnected
+}
+InterfaceCommandErrorTypeDef;
+
+
+
+#endif /* INC_DOWNSTREAM_INTERFACE_DEF_H_ */
diff --git a/Downstream/Inc/downstream_msc.h b/Downstream/Inc/downstream_msc.h
new file mode 100644
index 0000000..d78c226
--- /dev/null
+++ b/Downstream/Inc/downstream_msc.h
@@ -0,0 +1,36 @@
+/*
+ * downstream_msc.h
+ *
+ * Created on: 8/08/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_MSC_H_
+#define INC_DOWNSTREAM_MSC_H_
+
+
+#include "downstream_interface_def.h"
+#include "downstream_spi.h"
+
+
+#define MSC_SUPPORTED_BLOCK_SIZE 512
+#define MSC_FIXED_LUN 0
+
+
+typedef void (*DownstreamMSCCallbackPacketTypeDef)(DownstreamPacketTypeDef* receivedPacket,
+ uint16_t dataLength8);
+
+
+InterfaceCommandClassTypeDef Downstream_MSC_ApproveConnectedDevice(void);
+void Downstream_MSC_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
+HAL_StatusTypeDef Downstream_MSC_PutStreamDataPacket(DownstreamPacketTypeDef* packetToSend,
+ uint32_t dataLength8);
+HAL_StatusTypeDef Downstream_MSC_GetStreamDataPacket(DownstreamMSCCallbackPacketTypeDef callback);
+
+
+
+#endif /* INC_DOWNSTREAM_MSC_H_ */
diff --git a/Downstream/Inc/downstream_spi.h b/Downstream/Inc/downstream_spi.h
new file mode 100644
index 0000000..6f59a6f
--- /dev/null
+++ b/Downstream/Inc/downstream_spi.h
@@ -0,0 +1,84 @@
+/*
+ * downstream_spi.h
+ *
+ * Created on: 24/07/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_SPI_H_
+#define INC_DOWNSTREAM_SPI_H_
+
+
+#include "usbh_config.h"
+
+
+#define DOWNSTREAM_PACKET_HEADER_LEN (2) //Min length = CommandClass & Command bytes
+#define DOWNSTREAM_PACKET_LEN (DOWNSTREAM_PACKET_HEADER_LEN + BOT_PAGE_LENGTH)
+#define DOWNSTREAM_PACKET_LEN_MIN (DOWNSTREAM_PACKET_HEADER_LEN)
+
+#define DOWNSTREAM_PACKET_HEADER_LEN_16 (DOWNSTREAM_PACKET_HEADER_LEN / 2)
+#define DOWNSTREAM_PACKET_LEN_16 (DOWNSTREAM_PACKET_LEN / 2)
+#define DOWNSTREAM_PACKET_LEN_MIN_16 (DOWNSTREAM_PACKET_LEN_MIN / 2)
+
+#define DOWNSTREAM_SPI_FREAKOUT \
+ do { \
+ Downstream_PacketProcessor_FreakOut(); \
+ DownstreamInterfaceState = DOWNSTREAM_INTERFACE_ERROR; \
+ while (1); \
+ } while (0);
+
+
+
+typedef enum
+{
+ DOWNSTREAM_INTERFACE_IDLE,
+ DOWNSTREAM_INTERFACE_RX_SIZE_WAIT,
+ DOWNSTREAM_INTERFACE_RX_PACKET_WAIT,
+ DOWNSTREAM_INTERFACE_TX_SIZE_WAIT,
+ DOWNSTREAM_INTERFACE_TX_PACKET_WAIT,
+ DOWNSTREAM_INTERFACE_ERROR
+}
+InterfaceStateTypeDef;
+
+
+typedef enum
+{
+ NOT_BUSY,
+ BUSY
+}
+PacketBusyTypeDef;
+
+
+typedef struct
+{
+ PacketBusyTypeDef Busy; //Everything after Busy should be word-aligned
+ uint16_t Length16 __ALIGN_END; //Packet length includes CommandClass, Command, and Data
+ uint8_t CommandClass;
+ uint8_t Command;
+ uint8_t Data[BOT_PAGE_LENGTH]; //Should (must?) be word-aligned, for USB copy routine
+}
+DownstreamPacketTypeDef;
+
+
+
+typedef void (*FreePacketCallbackTypeDef)(DownstreamPacketTypeDef* freePacket);
+typedef void (*SpiPacketReceivedCallbackTypeDef)(DownstreamPacketTypeDef* receivedPacket);
+
+
+void Downstream_InitSPI(void);
+HAL_StatusTypeDef Downstream_GetFreePacket(FreePacketCallbackTypeDef callback);
+DownstreamPacketTypeDef* Downstream_GetFreePacketImmediately(void);
+void Downstream_ReleasePacket(DownstreamPacketTypeDef* packetToRelease);
+HAL_StatusTypeDef Downstream_ReceivePacket(SpiPacketReceivedCallbackTypeDef callback);
+HAL_StatusTypeDef Downstream_TransmitPacket(DownstreamPacketTypeDef* packetToWrite);
+void Downstream_SPIProcess(void);
+
+void HAL_SPI_TxRxCpltCallback(SPI_HandleTypeDef *hspi);
+void HAL_SPI_ErrorCallback(SPI_HandleTypeDef *hspi);
+
+
+#endif /* INC_DOWNSTREAM_SPI_H_ */
diff --git a/Downstream/Inc/downstream_statemachine.h b/Downstream/Inc/downstream_statemachine.h
new file mode 100644
index 0000000..deff744
--- /dev/null
+++ b/Downstream/Inc/downstream_statemachine.h
@@ -0,0 +1,54 @@
+/*
+ * downstream_statemachine.h
+ *
+ * Created on: 2/08/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INC_DOWNSTREAM_STATEMACHINE_H_
+#define INC_DOWNSTREAM_STATEMACHINE_H_
+
+
+#include "usbh_def.h"
+#include "usb_host.h"
+#include "downstream_spi.h"
+
+
+typedef enum
+{
+ STATE_DEVICE_NOT_READY,
+ STATE_DEVICE_READY, //Go here if HOST_USER_CLASS_ACTIVE callback arrives first
+ STATE_WAIT_DEVICE_READY, //Go here if COMMAND_INTERFACE_NOTIFY_DEVICE message arrives first
+ STATE_ACTIVE,
+ STATE_ERROR
+} DownstreamStateTypeDef;
+
+
+
+#define DOWNSTREAM_STATEMACHINE_FREAKOUT \
+ do { \
+ USB_Host_Disconnect(); \
+ LED_SetState(LED_STATUS_FLASH_ERROR); \
+ /*DownstreamState = STATE_ERROR; */ \
+ while (1); \
+} while (0);
+
+
+
+
+void Downstream_InitStateMachine(void);
+void Downstream_HostUserCallback(USBH_HandleTypeDef *phost, uint8_t id);
+void Downstream_PacketProcessor(DownstreamPacketTypeDef* receivedPacket);
+void Downstream_PacketProcessor_GenericErrorReply(DownstreamPacketTypeDef* replyPacket);
+void Downstream_PacketProcessor_ClassReply(DownstreamPacketTypeDef* replyPacket);
+void Downstream_PacketProcessor_NotifyDisconnectReplyRequired(void);
+void Downstream_PacketProcessor_CheckNotifyDisconnectReply(void);
+void Downstream_PacketProcessor_SetErrorState(void);
+void Downstream_PacketProcessor_FreakOut(void);
+
+
+#endif /* INC_DOWNSTREAM_STATEMACHINE_H_ */
diff --git a/Downstream/Inc/hal_config.h b/Downstream/Inc/hal_config.h
new file mode 100644
index 0000000..18ea4ab
--- /dev/null
+++ b/Downstream/Inc/hal_config.h
@@ -0,0 +1,423 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_conf.h
+ * @brief HAL configuration file.
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT(c) 2015 STMicroelectronics
+#include
+#include
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx.h"
+#include "stm32f4xx_hal.h"
+
+/**
+ MiddleWare name : USB_HOST
+ MiddleWare fileName : usbh_conf.h
+ MiddleWare version :
+*/
+/*---------- -----------*/
+#define USBH_MAX_NUM_ENDPOINTS 2
+
+/*---------- -----------*/
+#define USBH_MAX_NUM_INTERFACES 3
+
+/*---------- -----------*/
+#define USBH_MAX_NUM_CONFIGURATION 1
+
+/*---------- -----------*/
+#define USBH_KEEP_CFG_DESCRIPTOR 0
+
+/*---------- -----------*/
+#define USBH_MAX_NUM_SUPPORTED_CLASS 2
+
+/*---------- -----------*/
+#define USBH_MAX_SIZE_CONFIGURATION 256
+
+/*---------- -----------*/
+#define USBH_MAX_DATA_BUFFER 256 //was 512, string descriptors are max 255 bytes
+
+/*---------- -----------*/
+#define USBH_DEBUG_LEVEL 0
+
+/*---------- -----------*/
+#define USBH_USE_OS 0
+
+
+#define BOT_PAGE_LENGTH 512 //Moved here from usbh_msc_bot.h to avoid a circular include loop :(
+
+
+/****************************************/
+/* #define for FS and HS identification */
+#define HOST_HS 0
+#define HOST_FS 1
+
+/** @defgroup USBH_Exported_Macros
+ * @{
+ */
+#if (USBH_USE_OS == 1)
+ #include "cmsis_os.h"
+ #define USBH_PROCESS_PRIO osPriorityNormal
+ #define USBH_PROCESS_STACK_SIZE ((uint16_t)0)
+#endif
+
+ /* Memory management macros */
+#define USBH_malloc malloc
+#define USBH_free free
+#define USBH_memset memset
+#define USBH_memcpy memcpy
+
+ /* DEBUG macros */
+
+#if (USBH_DEBUG_LEVEL > 0)
+#define USBH_UsrLog(...) printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBH_UsrLog(...)
+#endif
+
+
+#if (USBH_DEBUG_LEVEL > 1)
+
+#define USBH_ErrLog(...) printf("ERROR: ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBH_ErrLog(...)
+#endif
+
+
+#if (USBH_DEBUG_LEVEL > 2)
+#define USBH_DbgLog(...) printf("DEBUG : ") ;\
+ printf(__VA_ARGS__);\
+ printf("\n");
+#else
+#define USBH_DbgLog(...)
+#endif
+
+/**
+ * @}
+ */
+
+
+
+/**
+ * @}
+ */
+
+/** @defgroup USBH_CONF_Exported_Types
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_CONF_Exported_Macros
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_CONF_Exported_Variables
+ * @{
+ */
+/**
+ * @}
+ */
+
+/** @defgroup USBH_CONF_Exported_FunctionsPrototype
+ * @{
+ */
+/**
+ * @}
+ */
+
+#endif //__USBH_CONF__H__
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
diff --git a/Downstream/Middlewares/ST/STM32_USB_Host_Library/Class/HID/Inc/usbh_hid.h b/Downstream/Middlewares/ST/STM32_USB_Host_Library/Class/HID/Inc/usbh_hid.h
new file mode 100644
index 0000000..9cf0f8b
--- /dev/null
+++ b/Downstream/Middlewares/ST/STM32_USB_Host_Library/Class/HID/Inc/usbh_hid.h
@@ -0,0 +1,362 @@
+/**
+ ******************************************************************************
+ * @file usbh_hid.h
+ * @author MCD Application Team
+ * @version V3.2.2
+ * @date 07-July-2015
+ * @brief This file contains all the prototypes for the usbh_hid.c
+ ******************************************************************************
+ * @attention
+ *
+ * © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics © COPYRIGHT 2015 STMicroelectronics device.DevDesc.idVendor && list[i].product==phost->device.DevDesc.idProduct){
+ break;
+ }else{
+ if(i==(USB_ID_COUNT-1)){//last usb device in list
+ DOWNSTREAM_STATEMACHINE_FREAKOUT;
+ }
+ }
+ }
+#endif
+
+ switch (phost->pActiveClass->ClassCode)
+ {
+#ifdef CONFIG_MASS_STORAGE_ENABLED
+ case USB_MSC_CLASS:
+ newActiveClass = Downstream_MSC_ApproveConnectedDevice();
+ break;
+#endif
+#if defined (CONFIG_KEYBOARD_ENABLED) || defined (CONFIG_MOUSE_ENABLED)
+ case USB_HID_CLASS:
+ newActiveClass = Downstream_HID_ApproveConnectedDevice();
+ break;
+#endif
+
+ //Add other classes here...
+
+
+ }
+
+ //Unsupported device classes will cause a slow fault flash.
+ //This is distinct from the fast freakout flash caused by internal errors or attacks.
+ //We consider supported classes that fail their approval checks to also be unsupported devices.
+ if (newActiveClass == COMMAND_CLASS_INTERFACE)
+ {
+ USB_Host_Disconnect();
+ LED_SetState(LED_STATUS_FLASH_UNSUPPORTED);
+ DownstreamState = STATE_ERROR;
+ return;
+ }
+
+ //If we already configured a device class, we cannot change to a different one without rebooting.
+ //This blocks 'hidden device' BadUSB attacks.
+ if ((ConfiguredDeviceClass != COMMAND_CLASS_INTERFACE) &&
+ (ConfiguredDeviceClass != newActiveClass))
+ {
+ DOWNSTREAM_STATEMACHINE_FREAKOUT;
+ return;
+ }
+ ConfiguredDeviceClass = newActiveClass;
+
+ if (DownstreamState == STATE_WAIT_DEVICE_READY)
+ {
+ Downstream_GetFreePacket(Downstream_PacketProcessor_Interface_ReplyNotifyDevice);
+ return;
+ }
+
+ if (DownstreamState == STATE_DEVICE_NOT_READY)
+ {
+ DownstreamState = STATE_DEVICE_READY;
+ return;
+ }
+
+ DOWNSTREAM_STATEMACHINE_FREAKOUT;
+ return;
+ }
+
+
+ //Called from main():
+ if ((id == HOST_USER_CLASS_FAILED) ||
+ (id == HOST_USER_UNRECOVERED_ERROR)) //Probably due to a crappy device that won't enumerate!
+ {
+ //Unsupported device classes will cause a slow fault flash.
+ //This is distinct from the fast freakout flash caused by internal errors or attacks.
+ USB_Host_Disconnect();
+ LED_SetState(LED_STATUS_FLASH_UNSUPPORTED);
+ DownstreamState = STATE_ERROR;
+ return;
+ }
+
+}
+
diff --git a/Downstream/Src/hal_msp.c b/Downstream/Src/hal_msp.c
new file mode 100644
index 0000000..bf1608e
--- /dev/null
+++ b/Downstream/Src/hal_msp.c
@@ -0,0 +1,163 @@
+/**
+ ******************************************************************************
+ * File Name : stm32f4xx_hal_msp.c
+ * Description : This file provides code for the MSP Initialization
+ * and de-Initialization codes.
+ ******************************************************************************
+ *
+ * COPYRIGHT(c) 2015 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ *
+ * Modifications by Robert Fisk
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+#include "interrupts.h"
+#include "board_config.h"
+
+
+DMA_HandleTypeDef hdma_spi1_rx;
+DMA_HandleTypeDef hdma_spi1_tx;
+
+
+
+void HAL_MspInit(void)
+{
+
+ HAL_NVIC_SetPriority(SysTick_IRQn, INT_PRIORITY_SYSTICK, 0);
+}
+
+
+uint32_t HAL_GetHSECrystalFreqMHz(void)
+{
+ if ((BOARD_REV_ID_PORT->IDR & BOARD_REV_PIN_MASK) < BOARD_REV_1_0_BETA_3)
+ {
+ return BOARD_REV_1_0_BETA_FREQ;
+ }
+ else
+ {
+ return BOARD_REV_1_0_BETA_3_FREQ;
+ }
+}
+
+
+void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ if(hspi->Instance==SPI1)
+ {
+ __SPI1_CLK_ENABLE();
+ __DMA2_CLK_ENABLE();
+
+ /**SPI1 GPIO Configuration
+ PA4 ------> SPI_NSS
+ PA5 ------> SPI1_SCK
+ PA6 ------> SPI1_MISO
+ PA7 ------> SPI1_MOSI
+ */
+ GPIO_InitStruct.Pin = GPIO_PIN_4; //NSS is active low so pull up
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;
+ GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7; //SCK & data are active high so pull down
+ GPIO_InitStruct.Pull = GPIO_PULLDOWN;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ UPSTREAM_TX_REQUEST_DEASSERT;
+ GPIO_InitStruct.Pin = UPSTREAM_TX_REQUEST_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(UPSTREAM_TX_REQUEST_PORT, &GPIO_InitStruct);
+
+ /* Peripheral DMA init*/
+ hdma_spi1_rx.Instance = DMA2_Stream2;
+ hdma_spi1_rx.Init.Channel = DMA_CHANNEL_3;
+ hdma_spi1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
+ hdma_spi1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
+ hdma_spi1_rx.Init.MemInc = DMA_MINC_ENABLE;
+ hdma_spi1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+ hdma_spi1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+ hdma_spi1_rx.Init.Mode = DMA_NORMAL;
+ hdma_spi1_rx.Init.Priority = DMA_PRIORITY_MEDIUM;
+ hdma_spi1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+ HAL_DMA_Init(&hdma_spi1_rx);
+ __HAL_LINKDMA(hspi,hdmarx,hdma_spi1_rx);
+
+ hdma_spi1_tx.Instance = DMA2_Stream3;
+ hdma_spi1_tx.Init.Channel = DMA_CHANNEL_3;
+ hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
+ hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
+ hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
+ hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
+ hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
+ hdma_spi1_tx.Init.Mode = DMA_NORMAL;
+ hdma_spi1_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
+ hdma_spi1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
+ HAL_DMA_Init(&hdma_spi1_tx);
+ __HAL_LINKDMA(hspi,hdmatx,hdma_spi1_tx);
+
+ /* DMA interrupt init */
+ HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, INT_PRIORITY_SPI_DMA, 0);
+ HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
+ HAL_NVIC_SetPriority(DMA2_Stream3_IRQn, INT_PRIORITY_SPI_DMA, 0);
+ HAL_NVIC_EnableIRQ(DMA2_Stream3_IRQn);
+
+ }
+}
+
+
+void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
+{
+
+ if(hspi->Instance==SPI1)
+ {
+ __SPI1_CLK_DISABLE();
+
+ /**SPI1 GPIO Configuration
+ PA5 ------> SPI1_SCK
+ PA6 ------> SPI1_MISO
+ PA7 ------> SPI1_MOSI
+ */
+ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7);
+
+ /* Peripheral DMA DeInit*/
+ HAL_DMA_DeInit(hspi->hdmarx);
+ HAL_DMA_DeInit(hspi->hdmatx);
+ }
+
+}
+
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Downstream/Src/interrupts.c b/Downstream/Src/interrupts.c
new file mode 100644
index 0000000..f7393fd
--- /dev/null
+++ b/Downstream/Src/interrupts.c
@@ -0,0 +1,117 @@
+/**
+ ******************************************************************************
+ * @file stm32f4xx_it.c
+ * @brief Interrupt Service Routines.
+ ******************************************************************************
+ *
+ * COPYRIGHT(c) 2015 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ *
+ * Modifications by Robert Fisk
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+#include "stm32f4xx.h"
+#include "interrupts.h"
+#include "led.h"
+#include "board_config.h"
+
+
+/* External variables --------------------------------------------------------*/
+extern HCD_HandleTypeDef hhcd_USB_OTG_FS;
+extern DMA_HandleTypeDef hdma_spi1_rx;
+extern DMA_HandleTypeDef hdma_spi1_tx;
+
+extern volatile uint8_t UsbInterruptHasHappened;
+
+uint8_t BusFaultAllowed = 0;
+
+
+/******************************************************************************/
+/* Cortex-M4 Processor Interruption and Exception Handlers */
+/******************************************************************************/
+
+/**
+* @brief This function handles System tick timer.
+*/
+void SysTick_Handler(void)
+{
+ HAL_IncTick();
+ LED_Tick();
+}
+
+/******************************************************************************/
+/* STM32F4xx Peripheral Interrupt Handlers */
+/* Add here the Interrupt Handlers for the used peripherals. */
+/* For the available peripheral interrupt handler names, */
+/* please refer to the startup file (startup_stm32f4xx.s). */
+/******************************************************************************/
+
+
+
+void DMA2_Stream2_IRQHandler(void)
+{
+ HAL_DMA_IRQHandler(&hdma_spi1_rx);
+}
+
+void DMA2_Stream3_IRQHandler(void)
+{
+ HAL_DMA_IRQHandler(&hdma_spi1_tx);
+}
+
+void OTG_FS_IRQHandler(void)
+{
+ HAL_HCD_IRQHandler(&hhcd_USB_OTG_FS);
+ UsbInterruptHasHappened = 1;
+}
+
+
+//This weird stuff is required when disabling flash writes.
+//The deliberate flash lockout will cause a bus fault that we need to process.
+void EnableOneBusFault(void)
+{
+ //It should not be enabled already!
+ if (BusFaultAllowed)
+ {
+ while (1);
+ }
+ SCB->SHCSR = SCB_SHCSR_BUSFAULTENA_Msk;
+ BusFaultAllowed = 1;
+}
+
+void BusFault_Handler(void)
+{
+ if (BusFaultAllowed)
+ {
+ BusFaultAllowed = 0;
+ return;
+ }
+ while (1);
+}
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Downstream/Src/led.c b/Downstream/Src/led.c
new file mode 100644
index 0000000..a6da5ac
--- /dev/null
+++ b/Downstream/Src/led.c
@@ -0,0 +1,142 @@
+/*
+ * led.c
+ *
+ * Created on: 19/08/2015
+ * Author: Robert Fisk
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+
+#include "led.h"
+#include "board_config.h"
+#include "build_config.h"
+
+uint32_t FaultLedCounter;
+uint32_t ReadWriteFlashEndTime;
+
+LedStatusTypeDef FaultLedState;
+uint16_t FaultLedOnMs;
+uint16_t FaultLedOffMs;
+uint8_t FaultLedBlinkCount;
+
+uint8_t FaultLedBlinkCountState;
+uint8_t FaultLedOutputState;
+
+
+void LED_Init(void)
+{
+ FAULT_LED_ON;
+ ReadWriteFlashEndTime = 0;
+ FaultLedState = LED_STATUS_STARTUP;
+}
+
+
+void LED_SetState(LedStatusTypeDef newState)
+{
+ switch (newState)
+ {
+ case LED_STATUS_OFF:
+ FaultLedCounter = UINT32_MAX;
+ FaultLedBlinkCountState = 0;
+ FaultLedOutputState = 0;
+ FAULT_LED_OFF;
+ break;
+
+ case LED_STATUS_FLASH_UNSUPPORTED:
+ FaultLedOnMs = LED_UNSUPPORTED_BLINK_MS;
+ FaultLedOffMs = LED_UNSUPPORTED_BLINK_MS;
+ FaultLedBlinkCount = 1;
+ break;
+
+ case LED_STATUS_FLASH_BOTDETECT:
+ FaultLedOnMs = LED_BOTDETECT_ON_MS;
+ FaultLedOffMs = LED_BOTDETECT_OFF_MS;
+ FaultLedBlinkCount = 2;
+ break;
+
+ case LED_STATUS_FLASH_READWRITE:
+#ifdef CONFIG_READ_FLASH_TIME_MS
+ if (FaultLedState == LED_STATUS_OFF)
+ {
+ FaultLedOnMs = LED_READWRITE_ON_MS;
+ FaultLedOffMs = LED_READWRITE_OFF_MS;
+ FaultLedBlinkCount = 1;
+ ReadWriteFlashEndTime = HAL_GetTick() + CONFIG_READ_FLASH_TIME_MS;
+ }
+ else
+#endif
+ {
+ newState = FaultLedState; //Don't override other active states
+ }
+ break;
+
+ default:
+ FaultLedOnMs = LED_ERROR_BLINK_MS; //Everything else is LED_STATUS_ERROR
+ FaultLedOffMs = LED_ERROR_BLINK_MS;
+ FaultLedBlinkCount = 1;
+ }
+
+ FaultLedState = newState;
+}
+
+
+void LED_Tick(void)
+{
+ if (FaultLedState == LED_STATUS_OFF) return;
+
+ if (FaultLedState == LED_STATUS_STARTUP)
+ {
+ if (HAL_GetTick() >= STARTUP_FLASH_DELAY_MS)
+ {
+ LED_SetState(LED_STATUS_OFF);
+ }
+ return;
+ }
+
+#ifdef CONFIG_READ_FLASH_TIME_MS
+ if (FaultLedState == LED_STATUS_FLASH_READWRITE)
+ {
+ if ((int32_t)(HAL_GetTick() - ReadWriteFlashEndTime) > 0)
+ {
+ LED_SetState(LED_STATUS_OFF);
+ return;
+ }
+ }
+#endif
+
+ if (FaultLedOutputState)
+ {
+ if (FaultLedCounter++ >= FaultLedOnMs) //Check to turn LED off
+ {
+ FaultLedBlinkCountState++;
+ FaultLedCounter = 0;
+ FaultLedOutputState = 0;
+ FAULT_LED_OFF;
+ }
+ }
+ else
+ {
+ if (FaultLedBlinkCountState >= FaultLedBlinkCount) //Checks to turn LED on...
+ {
+ if (FaultLedCounter++ >= FaultLedOffMs) //Last flash may have longer off-time
+ {
+ FaultLedBlinkCountState = 0;
+ FaultLedCounter = 0;
+ FaultLedOutputState = 1;
+ FAULT_LED_ON;
+ }
+ }
+ else
+ {
+ if (FaultLedCounter++ >= FaultLedOnMs) //Flash sequence uses on-time as intermediate off-time
+ {
+ FaultLedCounter = 0;
+ FaultLedOutputState = 1;
+ FAULT_LED_ON;
+ }
+ }
+ }
+}
diff --git a/Downstream/Src/main.c b/Downstream/Src/main.c
new file mode 100644
index 0000000..5ee813c
--- /dev/null
+++ b/Downstream/Src/main.c
@@ -0,0 +1,286 @@
+/**
+ ******************************************************************************
+ * File Name : main.c
+ * Description : Main program body
+ ******************************************************************************
+ *
+ * COPYRIGHT(c) 2015 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ *
+ * Modifications by Robert Fisk
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_hal.h"
+#include "usb_host.h"
+#include "board_config.h"
+#include "downstream_statemachine.h"
+#include "downstream_spi.h"
+#include "led.h"
+#include "interrupts.h"
+#include "build_config.h"
+
+
+
+/* Private function prototypes -----------------------------------------------*/
+static void SystemClock_Config(void);
+static void GPIO_Init(void);
+static void DisableFlashWrites(void);
+static void CheckFirmwareMatchesHardware(void);
+static void SetRDPlevel(void);
+
+FLASH_OBProgramInitTypeDef flash_OBinit;
+
+volatile uint8_t UsbInterruptHasHappened = 0;
+uint8_t IterationCount = 0;
+
+
+int main(void)
+{
+ //First things first!
+// DisableFlashWrites();
+ CheckFirmwareMatchesHardware();
+
+ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
+ HAL_Init();
+
+#ifdef CONFIG_FLASH_RDP_ENABLE
+ SetRDPlevel();
+#endif
+
+ /* Configure the system clock */
+ SystemClock_Config();
+
+ /* Initialize all configured peripherals */
+ GPIO_Init();
+ LED_Init();
+ USB_Host_Init();
+
+ Downstream_InitStateMachine();
+
+ while (1)
+ {
+ USB_Host_Process();
+ Downstream_SPIProcess();
+ Downstream_PacketProcessor_CheckNotifyDisconnectReply();
+
+ //Count number of main loops since last USB interrupt
+ if (UsbInterruptHasHappened)
+ {
+ UsbInterruptHasHappened = 0;
+ IterationCount = 0;
+ }
+
+ //Some USB host state transitions take 3 iterations to fully apply.
+ //We'll be generous and give it 5 before sleeping.
+ if (IterationCount++ > 4)
+ {
+ __WFI(); //sleep time!
+ }
+ }
+}
+
+
+void SetRDPlevel(void)
+{
+ HAL_FLASH_Unlock();
+ HAL_FLASH_OB_Unlock();
+ flash_OBinit.OptionType=OPTIONBYTE_RDP;
+ flash_OBinit.RDPLevel=OB_RDP_LEVEL_1;
+ HAL_FLASHEx_OBProgram(&flash_OBinit);
+ HAL_FLASH_OB_Launch();
+ HAL_FLASH_OB_Lock();
+ HAL_FLASH_Lock();
+
+}
+
+void DisableFlashWrites(void)
+{
+ //Disable flash writes until the next reset
+ //This will cause a bus fault interrupt, so allow one now.
+ EnableOneBusFault();
+ FLASH->KEYR = 999;
+
+ //Confirm that flash cannot be unlocked
+ //This unlock attempt will also cause two bus faults.
+ if ((FLASH->CR & FLASH_CR_LOCK) == 0) while(1);
+ EnableOneBusFault();
+ FLASH->KEYR = FLASH_KEY1;
+ EnableOneBusFault();
+ FLASH->KEYR = FLASH_KEY2;
+ if ((FLASH->CR & FLASH_CR_LOCK) == 0) while(1);
+}
+
+
+void CheckFirmwareMatchesHardware(void)
+{
+ //Check we are running on the expected hardware:
+ //STM32F401RC on USG v1.0 beta
+
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+
+ if ((*(uint32_t*)DBGMCU_BASE & DBGMCU_IDCODE_DEV_ID) == DBGMCU_IDCODE_DEV_ID_401xB_xC)
+ {
+ //Read in board revision and ID on port C
+ GPIO_InitStruct.Pin = BOARD_REV_PIN_MASK | BOARD_ID_PIN_MASK;
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+ GPIO_InitStruct.Alternate = 0;
+ HAL_GPIO_Init(BOARD_REV_ID_PORT, &GPIO_InitStruct);
+
+ //Correct board revision?
+ if ((BOARD_REV_ID_PORT->IDR & BOARD_REV_PIN_MASK) <= BOARD_REV_1_0_BETA_3)
+ {
+ //Correct board ID: downstream?
+ if (!(BOARD_REV_ID_PORT->IDR & BOARD_ID_PIN_MASK))
+ {
+ return;
+ }
+ }
+ }
+
+ //This is not the hardware we expected, so turn on our fault LED(s) and die in a heap.
+ GPIO_InitStruct.Pin = FAULT_LED_PIN | H405_FAULT_LED_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(FAULT_LED_PORT, &GPIO_InitStruct);
+ FAULT_LED_ON;
+ H405_FAULT_LED_ON;
+ while (1);
+}
+
+
+/** System Clock Configuration
+*/
+void SystemClock_Config(void)
+{
+
+ RCC_OscInitTypeDef RCC_OscInitStruct;
+ RCC_ClkInitTypeDef RCC_ClkInitStruct;
+
+ __PWR_CLK_ENABLE();
+
+ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
+
+ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
+ RCC_OscInitStruct.HSEState = RCC_HSE_ON;
+ RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
+ RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
+ RCC_OscInitStruct.PLL.PLLM = (HAL_GetHSECrystalFreqMHz() / 2); //PLL input frequency = 2MHz
+ RCC_OscInitStruct.PLL.PLLN = 168;
+ RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
+ RCC_OscInitStruct.PLL.PLLQ = 7;
+ if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) while (1);
+
+ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK |
+ RCC_CLOCKTYPE_HCLK |
+ RCC_CLOCKTYPE_PCLK1 |
+ RCC_CLOCKTYPE_PCLK2;
+ RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
+ RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
+ RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
+ if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) while (1);
+
+ HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
+}
+
+
+
+
+void GPIO_Init(void)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+
+ /* GPIO Ports Clock Enable */
+ //__GPIOH_CLK_ENABLE();
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ __HAL_RCC_GPIOB_CLK_ENABLE();
+ __HAL_RCC_GPIOC_CLK_ENABLE();
+ __HAL_RCC_GPIOD_CLK_ENABLE();
+
+ //Bulk initialise all ports as inputs with pullups active,
+ //excluding JTAG pins which must remain as AF0!
+ GPIO_InitStruct.Pin = (GPIO_PIN_All & ~(PA_JTMS | PA_JTCK | PA_JTDI));
+ GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+ GPIO_InitStruct.Alternate = 0;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+ GPIO_InitStruct.Pin = (GPIO_PIN_All & ~(PB_JTDO | PB_NJTRST));
+ HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+ GPIO_InitStruct.Pin = GPIO_PIN_All;
+ HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+ HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
+
+ //Fault LED is output
+ GPIO_InitStruct.Pin = FAULT_LED_PIN;
+ GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ HAL_GPIO_Init(FAULT_LED_PORT, &GPIO_InitStruct);
+ FAULT_LED_OFF;
+
+// //SPI_INT_ACTIVE indicator
+// GPIO_InitStruct.Pin = INT_ACTIVE_PIN;
+// HAL_GPIO_Init(INT_ACTIVE_PORT, &GPIO_InitStruct);
+// INT_ACTIVE_OFF;
+}
+
+
+
+#ifdef USE_FULL_ASSERT
+
+/**
+ * @brief Reports the name of the source file and the source line number
+ * where the assert_param error has occurred.
+ * @param file: pointer to the source file name
+ * @param line: assert_param error line source number
+ * @retval None
+ */
+void assert_failed(uint8_t* file, uint32_t line)
+{
+ /* USER CODE BEGIN 6 */
+ /* User can add his own implementation to report the file name and line number,
+ ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+ /* USER CODE END 6 */
+
+}
+
+#endif
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Downstream/Src/usb_host.c b/Downstream/Src/usb_host.c
new file mode 100644
index 0000000..694d3d8
--- /dev/null
+++ b/Downstream/Src/usb_host.c
@@ -0,0 +1,88 @@
+/**
+ ******************************************************************************
+ * @file : USB_HOST
+ * @version : v1.0_Cube
+ * @brief : This file implements the USB Host
+ ******************************************************************************
+ * COPYRIGHT(c) 2015 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ *
+ * Modifications by Robert Fisk
+ */
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "usb_host.h"
+#include "usbh_core.h"
+#include "usbh_msc.h"
+#include "usbh_hid.h"
+#include "downstream_statemachine.h"
+#include "build_config.h"
+
+
+/* USB Host Core handle declaration */
+USBH_HandleTypeDef hUsbHostFS;
+
+
+/* init function */
+void USB_Host_Init(void)
+{
+ /* Init Host Library,Add Supported Class and Start the library*/
+ USBH_Init(&hUsbHostFS, Downstream_HostUserCallback, HOST_FS);
+
+#ifdef CONFIG_MASS_STORAGE_ENABLED
+ USBH_RegisterClass(&hUsbHostFS, USBH_MSC_CLASS);
+#endif
+#if defined (CONFIG_KEYBOARD_ENABLED) || defined (CONFIG_MOUSE_ENABLED)
+ USBH_RegisterClass(&hUsbHostFS, USBH_HID_CLASS);
+#endif
+
+ USBH_Start(&hUsbHostFS);
+}
+
+/*
+ * Background task
+*/
+void USB_Host_Process()
+{
+ /* USB Host Background task */
+ USBH_Process(&hUsbHostFS);
+
+}
+
+
+//Called when Downstream Statemachine or SPI freaks out.
+void USB_Host_Disconnect()
+{
+ USBH_DeInit(&hUsbHostFS);
+}
+
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Downstream/Src/usbh_config.c b/Downstream/Src/usbh_config.c
new file mode 100644
index 0000000..4d842f0
--- /dev/null
+++ b/Downstream/Src/usbh_config.c
@@ -0,0 +1,470 @@
+/**
+ ******************************************************************************
+ * @file : usbh_conf.c
+ * @version : v1.0_Cube
+ * @brief : This file implements the board support package for the USB host library
+ ******************************************************************************
+ * COPYRIGHT(c) 2015 STMicroelectronics
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ *
+ * Modifications by Robert Fisk
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "usbh_core.h"
+#include "interrupts.h"
+
+
+HCD_HandleTypeDef hhcd_USB_OTG_FS;
+
+
+/*******************************************************************************
+ LL Driver Callbacks (HCD -> USB Host Library)
+*******************************************************************************/
+/* MSP Init */
+
+void HAL_HCD_MspInit(HCD_HandleTypeDef* hhcd)
+{
+ GPIO_InitTypeDef GPIO_InitStruct;
+
+ if(hhcd->Instance==USB_OTG_FS)
+ {
+ /**USB_OTG_FS GPIO Configuration
+ PA11 ------> USB_OTG_FS_DM
+ PA12 ------> USB_OTG_FS_DP
+ */
+ GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+ GPIO_InitStruct.Pull = GPIO_NOPULL;
+ GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+ GPIO_InitStruct.Alternate = GPIO_AF10_OTG_FS;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /* Peripheral clock enable */
+ __USB_OTG_FS_CLK_ENABLE();
+
+ /* Peripheral interrupt init*/
+ HAL_NVIC_SetPriority(OTG_FS_IRQn, INT_PRIORITY_USB, 0);
+ HAL_NVIC_EnableIRQ(OTG_FS_IRQn);
+ }
+}
+
+
+void HAL_HCD_MspDeInit(HCD_HandleTypeDef* hhcd)
+{
+ if(hhcd->Instance==USB_OTG_FS)
+ {
+ /* Peripheral clock disable */
+ __USB_OTG_FS_CLK_DISABLE();
+
+ /**USB_OTG_FS GPIO Configuration
+ PA9 ------> USB_OTG_FS_VBUS
+ PA11 ------> USB_OTG_FS_DM
+ PA12 ------> USB_OTG_FS_DP
+ */
+ //HAL_GPIO_DeInit(GPIOA, GPIO_PIN_11|GPIO_PIN_12);
+
+ /* Peripheral interrupt Deinit*/
+ HAL_NVIC_DisableIRQ(OTG_FS_IRQn);
+ }
+}
+
+/**
+ * @brief SOF callback.
+ * @param hhcd: HCD handle
+ * @retval None
+ */
+void HAL_HCD_SOF_Callback(HCD_HandleTypeDef *hhcd)
+{
+ USBH_LL_IncTimer (hhcd->pData);
+}
+
+/**
+ * @brief SOF callback.
+ * @param hhcd: HCD handle
+ * @retval None
+ */
+void HAL_HCD_Connect_Callback(HCD_HandleTypeDef *hhcd)
+{
+ USBH_LL_Connect(hhcd->pData);
+}
+
+
+void HAL_HCD_PortEnabled_Callback(HCD_HandleTypeDef *hhcd)
+{
+ USBH_LL_PortEnabled(hhcd->pData);
+}
+
+
+/**
+ * @brief SOF callback.
+ * @param hhcd: HCD handle
+ * @retval None
+ */
+HAL_StatusTypeDef HAL_HCD_Disconnect_Callback(HCD_HandleTypeDef *hhcd)
+{
+ if (USBH_LL_Disconnect(hhcd->pData) == USBH_OK)
+ {
+ return HAL_OK;
+ }
+ return HAL_ERROR;
+}
+
+/**
+ * @brief Notify URB state change callback.
+ * @param hhcd: HCD handle
+ * @retval None
+ */
+void HAL_HCD_HC_NotifyURBChange_Callback(HCD_HandleTypeDef *hhcd, uint8_t chnum, HCD_URBStateTypeDef urb_state)
+{
+ /* To be used with OS to sync URB state with the global state machine */
+#if (USBH_USE_OS == 1)
+ USBH_LL_NotifyURBChange(hhcd->pData);
+#endif
+}
+/*******************************************************************************
+ LL Driver Interface (USB Host Library --> HCD)
+*******************************************************************************/
+/**
+ * @brief USBH_LL_Init
+ * Initialize the Low Level portion of the Host driver.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_Init (USBH_HandleTypeDef *phost)
+{
+ /* Init USB_IP */
+ if (phost->id == HOST_FS) {
+ /* Link The driver to the stack */
+ hhcd_USB_OTG_FS.pData = phost;
+ phost->pData = &hhcd_USB_OTG_FS;
+
+ hhcd_USB_OTG_FS.Instance = USB_OTG_FS;
+ hhcd_USB_OTG_FS.Init.Host_channels = 8;
+ hhcd_USB_OTG_FS.Init.speed = HCD_SPEED_FULL;
+ hhcd_USB_OTG_FS.Init.dma_enable = DISABLE;
+ hhcd_USB_OTG_FS.Init.phy_itface = HCD_PHY_EMBEDDED;
+ hhcd_USB_OTG_FS.Init.Sof_enable = DISABLE;
+ HAL_HCD_Init(&hhcd_USB_OTG_FS);
+
+ USBH_LL_SetTimer (phost, HAL_HCD_GetCurrentFrame(&hhcd_USB_OTG_FS));
+ }
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_DeInit
+ * De-Initialize the Low Level portion of the Host driver.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_DeInit (USBH_HandleTypeDef *phost)
+{
+ HAL_HCD_DeInit(phost->pData);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_Start
+ * Start the Low Level portion of the Host driver.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_Start(USBH_HandleTypeDef *phost)
+{
+ HAL_HCD_Start(phost->pData);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_Stop
+ * Stop the Low Level portion of the Host driver.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_Stop (USBH_HandleTypeDef *phost)
+{
+ HAL_HCD_Stop(phost->pData);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_GetSpeed
+ * Return the USB Host Speed from the Low Level Driver.
+ * @param phost: Host handle
+ * @retval USBH Speeds
+ */
+USBH_SpeedTypeDef USBH_LL_GetSpeed (USBH_HandleTypeDef *phost)
+{
+ USBH_SpeedTypeDef speed = USBH_SPEED_FULL;
+
+ switch (HAL_HCD_GetCurrentSpeed(phost->pData))
+ {
+ case 0 :
+ speed = USBH_SPEED_HIGH;
+ break;
+
+// case 1 :
+// speed = USBH_SPEED_FULL;
+// break;
+
+ case 2 :
+ speed = USBH_SPEED_LOW;
+ break;
+
+// default:
+// speed = USBH_SPEED_FULL;
+// break;
+ }
+ return speed;
+}
+
+/**
+ * @brief USBH_LL_ResetPort
+ * Reset the Host Port of the Low Level Driver.
+ * @param phost: Host handle
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_ResetPort (USBH_HandleTypeDef *phost)
+{
+ HAL_HCD_ResetPort(phost->pData);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_GetLastXferSize
+ * Return the last transfered packet size.
+ * @param phost: Host handle
+ * @param pipe: Pipe index
+ * @retval Packet Size
+ */
+uint32_t USBH_LL_GetLastXferSize (USBH_HandleTypeDef *phost, uint8_t pipe)
+{
+ return HAL_HCD_HC_GetXferCount(phost->pData, pipe);
+}
+
+/**
+ * @brief USBH_LL_OpenPipe
+ * Open a pipe of the Low Level Driver.
+ * @param phost: Host handle
+ * @param pipe_num: Pipe index
+ * @param epnum: Endpoint Number
+ * @param dev_address: Device USB address
+ * @param speed: Device Speed
+ * @param ep_type: Endpoint Type
+ * @param mps: Endpoint Max Packet Size
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_OpenPipe (USBH_HandleTypeDef *phost,
+ uint8_t pipe_num,
+ uint8_t epnum,
+ uint8_t dev_address,
+ uint8_t speed,
+ uint8_t ep_type,
+ uint16_t mps)
+{
+ HAL_HCD_HC_Init(phost->pData,
+ pipe_num,
+ epnum,
+ dev_address,
+ speed,
+ ep_type,
+ mps);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_ClosePipe
+ * Close a pipe of the Low Level Driver.
+ * @param phost: Host handle
+ * @param pipe_num: Pipe index
+ * @retval USBH Status
+ */
+USBH_StatusTypeDef USBH_LL_ClosePipe (USBH_HandleTypeDef *phost, uint8_t pipe)
+{
+ HAL_HCD_HC_Halt(phost->pData, pipe);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_SubmitURB
+ * Submit a new URB to the low level driver.
+ * @param phost: Host handle
+ * @param pipe: Pipe index
+ * This parameter can be a value from 1 to 15
+ * @param direction : Channel number
+ * This parameter can be one of the these values:
+ * 0 : Output
+ * 1 : Input
+ * @param ep_type : Endpoint Type
+ * This parameter can be one of the these values:
+ * @arg EP_TYPE_CTRL: Control type
+ * @arg EP_TYPE_ISOC: Isochrounous type
+ * @arg EP_TYPE_BULK: Bulk type
+ * @arg EP_TYPE_INTR: Interrupt type
+ * @param token : Endpoint Type
+ * This parameter can be one of the these values:
+ * @arg 0: PID_SETUP
+ * @arg 1: PID_DATA
+ * @param pbuff : pointer to URB data
+ * @param length : Length of URB data
+ * @param do_ping : activate do ping protocol (for high speed only)
+ * This parameter can be one of the these values:
+ * 0 : do ping inactive
+ * 1 : do ping active
+ * @retval Status
+ */
+
+USBH_StatusTypeDef USBH_LL_SubmitURB (USBH_HandleTypeDef *phost,
+ uint8_t pipe,
+ uint8_t direction ,
+ uint8_t ep_type,
+ uint8_t token,
+ uint8_t* pbuff,
+ uint16_t length,
+ uint8_t do_ping )
+{
+ HAL_HCD_HC_SubmitRequest (phost->pData,
+ pipe,
+ direction ,
+ ep_type,
+ token,
+ pbuff,
+ length,
+ do_ping);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_GetURBState
+ * Get a URB state from the low level driver.
+ * @param phost: Host handle
+ * @param pipe: Pipe index
+ * This parameter can be a value from 1 to 15
+ * @retval URB state
+ * This parameter can be one of the these values:
+ * @arg URB_IDLE
+ * @arg URB_DONE
+ * @arg URB_NOTREADY
+ * @arg URB_NYET
+ * @arg URB_ERROR
+ * @arg URB_STALL
+ */
+USBH_URBStateTypeDef USBH_LL_GetURBState (USBH_HandleTypeDef *phost, uint8_t pipe)
+{
+ return (USBH_URBStateTypeDef)HAL_HCD_HC_GetURBState (phost->pData, pipe);
+}
+
+/**
+ * @brief USBH_LL_DriverVBUS
+ * Drive VBUS.
+ * @param phost: Host handle
+ * @param state : VBUS state
+ * This parameter can be one of the these values:
+ * 0 : VBUS Active
+ * 1 : VBUS Inactive
+ * @retval Status
+ */
+USBH_StatusTypeDef USBH_LL_DriverVBUS (USBH_HandleTypeDef *phost, uint8_t state)
+{
+ //Our VBUS is permanently on, so don't bother with this...
+
+// if (phost->id == HOST_FS)
+// {
+// if(state == 0)
+// {
+// //VBUS off
+// }
+// else
+// {
+// //VBUS on
+// }
+// }
+// HAL_Delay(200);
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_SetToggle
+ * Set toggle for a pipe.
+ * @param phost: Host handle
+ * @param pipe: Pipe index
+ * @param pipe_num: Pipe index
+ * @param toggle: toggle (0/1)
+ * @retval Status
+ */
+USBH_StatusTypeDef USBH_LL_SetToggle (USBH_HandleTypeDef *phost, uint8_t pipe, uint8_t toggle)
+{
+ HCD_HandleTypeDef *pHandle;
+ pHandle = phost->pData;
+
+ if(pHandle->hc[pipe].ep_is_in)
+ {
+ pHandle->hc[pipe].toggle_in = toggle;
+ }
+ else
+ {
+ pHandle->hc[pipe].toggle_out = toggle;
+ }
+
+ return USBH_OK;
+}
+
+/**
+ * @brief USBH_LL_GetToggle
+ * Return the current toggle of a pipe.
+ * @param phost: Host handle
+ * @param pipe: Pipe index
+ * @retval toggle (0/1)
+ */
+uint8_t USBH_LL_GetToggle (USBH_HandleTypeDef *phost, uint8_t pipe)
+{
+ uint8_t toggle = 0;
+ HCD_HandleTypeDef *pHandle;
+ pHandle = phost->pData;
+
+ if(pHandle->hc[pipe].ep_is_in)
+ {
+ toggle = pHandle->hc[pipe].toggle_in;
+ }
+ else
+ {
+ toggle = pHandle->hc[pipe].toggle_out;
+ }
+ return toggle;
+}
+
+/**
+ * @brief USBH_Delay
+ * Delay routine for the USB Host Library
+ * @param Delay: Delay in ms
+ * @retval None
+ */
+void USBH_Delay (uint32_t Delay)
+{
+ HAL_Delay(Delay);
+}
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Downstream/gcc_arm_stm32f401.ld b/Downstream/gcc_arm_stm32f401.ld
new file mode 100644
index 0000000..0fffc55
--- /dev/null
+++ b/Downstream/gcc_arm_stm32f401.ld
@@ -0,0 +1,115 @@
+/* Linker script to configure memory regions. */
+MEMORY
+{
+ FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 256K
+ SRAM1 (xrw) : ORIGIN = 0x20000000, LENGTH = 64K
+
+}
+
+/* Library configurations */
+GROUP(libgcc.a libc.a libm.a libnosys.a)
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ * Reset_Handler : Entry of reset handler
+ *
+ * It defines following symbols, which code can use without definition:
+ * __exidx_start
+ * __exidx_end
+ * __copy_table_start__
+ * __copy_table_end__
+ * __zero_table_start__
+ * __zero_table_end__
+ * __etext
+ * __data_start__
+ * __preinit_array_start
+ * __preinit_array_end
+ * __init_array_start
+ * __init_array_end
+ * __fini_array_start
+ * __fini_array_end
+ * __data_end__
+ * __bss_start__
+ * __bss_end__
+ * __end__
+ * end
+ * __HeapLimit
+ * __StackLimit
+ * __StackTop
+ * __stack
+ * __Vectors_End
+ * __Vectors_Size
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+ .text :
+ {
+ KEEP(*(.vectors))
+ __Vectors_End = .;
+ __Vectors_Size = __Vectors_End - __Vectors;
+ __end__ = .;
+
+ *(.text*)
+
+ KEEP(*(.init))
+ KEEP(*(.fini))
+
+
+ *(.rodata*)
+
+ KEEP(*(.eh_frame*))
+ } > FLASH
+
+ __etext = .;
+
+ .data : AT (__etext)
+ {
+ __data_start__ = .;
+ *(vtable)
+ *(.data*)
+
+ /* All data end */
+ __data_end__ = .;
+
+ } > SRAM1
+
+ .bss :
+ {
+ . = ALIGN(4);
+ __bss_start__ = .;
+ *(.bss*)
+ *(COMMON)
+ . = ALIGN(4);
+ __bss_end__ = .;
+ } > SRAM1
+
+ .heap (COPY):
+ {
+ __HeapBase = .;
+ __end__ = .;
+ end = __end__;
+ KEEP(*(.heap*))
+ __HeapLimit = .;
+ } > SRAM1
+
+ /* .stack_dummy section doesn't contains any symbols. It is only
+ * used for linker to calculate size of stack sections, and assign
+ * values to stack symbols later */
+ .stack_dummy (COPY):
+ {
+ KEEP(*(.stack*))
+ } > SRAM1
+
+ /* Set stack top to end of RAM, and stack limit move down by
+ * size of stack_dummy section */
+ __StackTop = ORIGIN(SRAM1) + LENGTH(SRAM1);
+ __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+ PROVIDE(__stack = __StackTop);
+
+ /* Check if data + heap + stack exceeds RAM limit */
+ ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+
+}