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preonic-1.0
planck-4.0
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LUFA-111009
LUFA-130901
LUFA-130901-BETA
LUFA-140302
LUFA-140928
LUFA-151115
LUFA-170418
breakpoint_2019_08_30
ergodox_ez-161205
gh60-0.1
planck-4.1
planck-4.2
planck-5.0
planck-6.0
planck-6.1
planck-light-1.0
preonic-2.0
v4.0
${ noResults }
Jun Wako
0d222db31f
- watchdog is timed out before disabling it by mbed startup - old booloader disable watchdog while new(2015/01) doesn't |
11 years ago | |
|---|---|---|
| .. | ||
| README | infinity: Fix disabling watchdog | 11 years ago |
| USBHAL_KL25Z.cpp | infinity: Add initial files for keyboard support | 11 years ago |
| cmsis_nvic.c | infinity: Move project specific files to local | 11 years ago |
| infinity.ld | infinity: Move project specific files to local | 11 years ago |
| startup_MK20D5.s | infinity: Fix disabling watchdog | 11 years ago |
| system_MK20D5.c | infinity: Move project specific files to local | 11 years ago |
README
mbed fix for Infinity
=====================
Without linker script patch it doesn't place vector table in final binary.
And clock is configured to 48MHz using internal clock reference and FLL multiplication.
mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/system_MK20D5.c
Fix SystemInit: clock setup for internal clock. Inifinity has no external Xtal.
mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/cmsis_nvic.c
Fix NVIC vector address of firmware 0x1000 instead of 0x0
mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/MK20D5.ld
Fix memory map for Infinity bootloader
Flash starts at 0x1000
No flash config bytes sector
USBDevice/USBDevice/USBHAL_KL25Z.cpp
Fix USB clock setup, see below.
2015/01/04 Based on mbed-sdk @2f63fa7d78a26.
Kinetis USB config
==================
Clock source: Internal reference clock wth FLL
SIM_SOPT[USBSRC] = 1(MCGPLLCLK/MCGFLLCLK)
SIM_SOPT[PLLSEL] = 0(MCGFLLCLK)
Clock dividor:
SIM_CLKDIV2[USBDIV] = 0
SIM_CLKDIV2[USBFAC] = 0
Clock enable:
SIM_SCGC4[USBOTG] = 1
Infinity bootloader change
==========================
After @2c7542e(2015/01) Infinity bootloader doesn't disable watchdog timer and keyboard firmware has to do it itself. mbed disables watchdog in startup sequence but unfortunately timer is timed out bofore that.
We have to do that in earlier phase of mbed startup sequence.
mbed starup sequence files:
mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/startup_M20D5.s
mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/system_MK20D5.c
Infinity booloader change commit:
https://github.com/kiibohd/controller/commit/2c7542e2e7f0b8a99edf563dc53164fe1a439483
discussion:
https://geekhack.org/index.php?topic=41989.msg1686616#msg1686616
WORKAROUND
----------
Call SystemInit early in Reset_Handler.
$ diff -u ../../mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/startup_MK20D5.s mbed-infinity
--- ../../mbed-sdk/libraries/mbed/targets/cmsis/TARGET_Freescale/TARGET_K20D50M/TOOLCHAIN_GCC_ARM/startup_MK20D5.s 2015-03-22 10:33:22.779866000 +0900
+++ mbed-infinity/startup_MK20D5.s 2015-03-22 10:32:56.483866000 +0900
@@ -147,6 +147,8 @@
* __etext: End of code section, i.e., begin of data sections to copy from.
* __data_start__/__data_end__: RAM address range that data should be
* copied to. Both must be aligned to 4 bytes boundary. */
+ ldr r0, =SystemInit
+ blx r0
ldr r1, =__etext
ldr r2, =__data_start__
@@ -161,8 +163,6 @@
.Lflash_to_ram_loop_end:
- ldr r0, =SystemInit
- blx r0
ldr r0, =_start
bx r0
.pool