Merge pull request #748 from wolfmanjm/add/azteegx3pro

Add/azteegx3pro

Marlin/Configuration.h

@@ -52,6 +52,7 @@
 // 65 = Azteeg X1
 // 66 = Melzi with ATmega1284 (MaKr3d version)
 // 67 = Azteeg X3
+// 68 = Azteeg X3 Pro
 // 7  = Ultimaker
 // 71 = Ultimaker (Older electronics. Pre 1.5.4. This is rare)
 // 77 = 3Drag Controller

Marlin/Configuration_adv.h

@@ -268,6 +268,12 @@
 // Motor Current setting (Only functional when motor driver current ref pins are connected to a digital trimpot on supported boards)
 #define DIGIPOT_MOTOR_CURRENT {135,135,135,135,135} // Values 0-255 (RAMBO 135 = ~0.75A, 185 = ~1A)
 
+// uncomment to enable an I2C based DIGIPOT like on the Azteeg X3 Pro
+//#define DIGIPOT_I2C
+// Number of channels available for I2C digipot, For Azteeg X3 Pro we have 8
+#define DIGIPOT_I2C_NUM_CHANNELS 8
+// actual motor currents in Amps, need as many here as DIGIPOT_I2C_NUM_CHANNELS
+#define DIGIPOT_I2C_MOTOR_CURRENTS {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}
 
 //===========================================================================
 //=============================Additional Features===========================

Marlin/Makefile

@@ -57,6 +57,9 @@ BUILD_DIR          ?= applet
 # This defines whether Liquid_TWI2 support will be built
 LIQUID_TWI2        ?= 0
 
+# this defines if Wire is needed
+WIRE               ?= 0
+
 ############################################################################
 # Below here nothing should be changed...
 
@@ -174,6 +177,14 @@ else ifeq  ($(HARDWARE_MOTHERBOARD),301)
 HARDWARE_VARIANT ?= arduino
 MCU              ?= atmega2560
 
+# Azteeg
+else ifeq  ($(HARDWARE_MOTHERBOARD),67)
+HARDWARE_VARIANT ?= arduino
+MCU              ?= atmega2560
+else ifeq  ($(HARDWARE_MOTHERBOARD),68)
+HARDWARE_VARIANT ?= arduino
+MCU              ?= atmega2560
+
 endif
 
 # Be sure to regenerate speed_lookuptable.h with create_speed_lookuptable.py
@@ -213,6 +224,10 @@ VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Wire
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Wire/utility
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/LiquidTWI2
 endif
+ifeq ($(WIRE), 1)
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Wire
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Wire/utility
+endif
 else
 VPATH += $(HARDWARE_DIR)/libraries/LiquidCrystal
 VPATH += $(HARDWARE_DIR)/libraries/SPI
@@ -221,6 +236,10 @@ VPATH += $(HARDWARE_DIR)/libraries/Wire
 VPATH += $(HARDWARE_DIR)/libraries/Wire/utility
 VPATH += $(HARDWARE_DIR)/libraries/LiquidTWI2
 endif
+ifeq ($(WIRE, 1)
+VPATH += $(HARDWARE_DIR)/libraries/Wire
+VPATH += $(HARDWARE_DIR)/libraries/Wire/utility
+endif
 endif
 ifeq ($(HARDWARE_VARIANT), arduino)
 HARDWARE_SUB_VARIANT ?= mega
@@ -241,7 +260,7 @@ CXXSRC = WMath.cpp WString.cpp Print.cpp Marlin_main.cpp	\
 	MarlinSerial.cpp Sd2Card.cpp SdBaseFile.cpp SdFatUtil.cpp	\
 	SdFile.cpp SdVolume.cpp motion_control.cpp planner.cpp		\
 	stepper.cpp temperature.cpp cardreader.cpp ConfigurationStore.cpp \
-	watchdog.cpp SPI.cpp Servo.cpp Tone.cpp ultralcd.cpp
+	watchdog.cpp SPI.cpp Servo.cpp Tone.cpp ultralcd.cpp digipot_mcp4451.cpp
 ifeq ($(LIQUID_TWI2), 0)
 CXXSRC += LiquidCrystal.cpp
 else
@@ -249,6 +268,11 @@ SRC += twi.c
 CXXSRC += Wire.cpp LiquidTWI2.cpp
 endif
 
+ifeq ($(WIRE), 1)
+SRC += twi.c
+CXXSRC += Wire.cpp
+endif
+
 #Check for Arduino 1.0.0 or higher and use the correct sourcefiles for that version
 ifeq ($(shell [ $(ARDUINO_VERSION) -ge 100 ] && echo true), true)
 CXXSRC += main.cpp

Marlin/Marlin.h

@@ -235,4 +235,9 @@ extern unsigned long stoptime;
 // Handling multiple extruders pins
 extern uint8_t active_extruder;
 
+#ifdef DIGIPOT_I2C
+extern void digipot_i2c_set_current( int channel, float current );
+extern void digipot_i2c_init();
+#endif
+
 #endif

Marlin/Marlin.ino

@@ -50,3 +50,7 @@
 #if defined(DIGIPOTSS_PIN) && DIGIPOTSS_PIN > -1
 #include <SPI.h>
 #endif
+
+#if defined(DIGIPOT_I2C)
+  #include <Wire.h>
+#endif

Marlin/Marlin.pde

@@ -50,3 +50,7 @@
 #if defined(DIGIPOTSS_PIN) && DIGIPOTSS_PIN > -1
 #include <SPI.h>
 #endif
+
+#if defined(DIGIPOT_I2C)
+  #include <Wire.h>
+#endif

Marlin/Marlin_main.cpp

@@ -492,6 +492,10 @@ void setup()
   #if defined(CONTROLLERFAN_PIN) && CONTROLLERFAN_PIN > -1
     SET_OUTPUT(CONTROLLERFAN_PIN); //Set pin used for driver cooling fan
   #endif
+
+  #ifdef DIGIPOT_I2C
+    digipot_i2c_init();
+  #endif
 }
 
 
@@ -2841,6 +2845,12 @@ void process_commands()
       #ifdef MOTOR_CURRENT_PWM_E_PIN
         if(code_seen('E')) digipot_current(2, code_value());
       #endif
+      #ifdef DIGIPOT_I2C
+        // this one uses actual amps in floating point
+        for(int i=0;i<NUM_AXIS;i++) if(code_seen(axis_codes[i])) digipot_i2c_set_current(i, code_value());
+        // for each additional extruder (named B,C,D,E..., channels 4,5,6,7...)
+        for(int i=NUM_AXIS;i<DIGIPOT_I2C_NUM_CHANNELS;i++) if(code_seen('B'+i-NUM_AXIS)) digipot_i2c_set_current(i, code_value());
+      #endif
     }
     break;
     case 908: // M908 Control digital trimpot directly.

Marlin/digipot_mcp4451.cpp

@@ -0,0 +1,54 @@
+#include "Configuration.h"
+
+#ifdef DIGIPOT_I2C
+#include "Stream.h"
+#include "utility/twi.h"
+#include "Wire.h"
+
+// Settings for the I2C based DIGIPOT (MCP4451) on Azteeg X3 Pro
+#define DIGIPOT_I2C_FACTOR 106.7
+#define DIGIPOT_I2C_MAX_CURRENT 2.5
+
+static byte current_to_wiper( float current ){
+    return byte(ceil(float((DIGIPOT_I2C_FACTOR*current))));
+}
+
+static void i2c_send(byte addr, byte a, byte b)
+{
+	Wire.beginTransmission(addr);
+    Wire.write(a);
+    Wire.write(b);
+    Wire.endTransmission();
+}
+
+// This is for the MCP4451 I2C based digipot
+void digipot_i2c_set_current( int channel, float current )
+{
+    current = min( (float) max( current, 0.0f ), DIGIPOT_I2C_MAX_CURRENT);
+    // these addresses are specific to Azteeg X3 Pro, can be set to others,
+    // In this case first digipot is at address A0=0, A1= 0, second one is at A0=0, A1= 1
+    byte addr= 0x2C; // channel 0-3
+    if(channel >= 4) {
+    	addr= 0x2E; // channel 4-7
+    	channel-= 4;
+    }
+
+    // Initial setup
+    i2c_send( addr, 0x40, 0xff );
+    i2c_send( addr, 0xA0, 0xff );
+
+    // Set actual wiper value
+    byte addresses[4] = { 0x00, 0x10, 0x60, 0x70 };
+    i2c_send( addr, addresses[channel], current_to_wiper(current) );
+}
+
+void digipot_i2c_init()
+{
+    const float digipot_motor_current[] = DIGIPOT_I2C_MOTOR_CURRENTS;
+    Wire.begin();
+    // setup initial currents as defined in Configuration_adv.h
+    for(int i=0;i<=sizeof(digipot_motor_current)/sizeof(float);i++) {
+        digipot_i2c_set_current(i, digipot_motor_current[i]);
+    }
+}
+#endif

Marlin/pins.h

@@ -375,7 +375,7 @@
 * Arduino Mega pin assignment
 *
 ****************************************************************************************/
-#if MOTHERBOARD == 3 || MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67
+#if MOTHERBOARD == 3 || MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
 #define KNOWN_BOARD 1
 
 //////////////////FIX THIS//////////////
@@ -391,7 +391,7 @@
 // #define RAMPS_V_1_0
 
 
-#if MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67
+#if MOTHERBOARD == 33 || MOTHERBOARD == 34 || MOTHERBOARD == 35 || MOTHERBOARD == 77 || MOTHERBOARD == 67 || MOTHERBOARD == 68
 
   #define LARGE_FLASH true
 
@@ -472,12 +472,26 @@
     #define E1_DIR_PIN         34
     #define E1_ENABLE_PIN      30
 
+    #if MOTHERBOARD == 68
+      #define E2_STEP_PIN        23
+      #define E2_DIR_PIN         25
+      #define E2_ENABLE_PIN      40
+
+      #define E3_STEP_PIN        27
+      #define E3_DIR_PIN         29
+      #define E3_ENABLE_PIN      41
+
+      #define E4_STEP_PIN        43
+      #define E4_DIR_PIN         37
+      #define E4_ENABLE_PIN      42
+    #endif
+
     #define SDPOWER            -1
     #define SDSS               53
     #define LED_PIN            13
   #endif
 
-  #if MOTHERBOARD == 33 || MOTHERBOARD == 35 || MOTHERBOARD == 67
+  #if MOTHERBOARD == 33 || MOTHERBOARD == 35 || MOTHERBOARD == 67 || MOTHERBOARD == 68
     #define FAN_PIN            9 // (Sprinter config)
   #else
     #define FAN_PIN            4 // IO pin. Buffer needed
@@ -511,17 +525,33 @@
     #define HEATER_1_PIN       9    // EXTRUDER 2 (FAN On Sprinter)
   #endif
 
-  #define HEATER_2_PIN       -1 
 
   #if MOTHERBOARD == 77
     #define HEATER_0_PIN       10
     #define HEATER_1_PIN       12
     #define HEATER_2_PIN       6
+  #elif MOTHERBOARD == 68
+    #define HEATER_2_PIN       16
+    #define HEATER_3_PIN       17
+    #define HEATER_4_PIN       4
+    #define HEATER_5_PIN       5
+    #define HEATER_6_PIN       6
+    #define HEATER_7_PIN       11
+  #else
+    #define HEATER_2_PIN       -1
   #endif
 
   #define TEMP_0_PIN         13   // ANALOG NUMBERING
   #define TEMP_1_PIN         15   // ANALOG NUMBERING
+  #if MOTHERBOARD == 68
+    #define TEMP_2_PIN         12   // ANALOG NUMBERING
+    #define TEMP_3_PIN         11   // ANALOG NUMBERING
+    #define TEMP_4_PIN         10   // ANALOG NUMBERING
+    #define TC1                4    // ANALOG NUMBERING Thermo couple on Azteeg X3Pro
+    #define TC2                5    // ANALOG NUMBERING Thermo couple on Azteeg X3Pro
+  #else
     #define TEMP_2_PIN         -1   // ANALOG NUMBERING
+  #endif
 
   #if MOTHERBOARD == 35
     #define HEATER_BED_PIN     -1    // NO BED
@@ -532,9 +562,8 @@
       #define HEATER_BED_PIN     8    // BED
     #endif
   #endif
-  #define TEMP_BED_PIN       14   // ANALOG NUMBERING
-
 
+  #define TEMP_BED_PIN       14   // ANALOG NUMBERING
 
   #ifdef NUM_SERVOS
     #define SERVO0_PIN         11
@@ -552,6 +581,10 @@
     #endif
   #endif
 
+  #if MOTHERBOARD == 68
+    #define BEEPER 33
+  #endif
+
   #ifdef TEMP_STAT_LEDS
     #if MOTHERBOARD == 67
       #define STAT_LED_RED       6