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Fixed bug 3586425. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4826 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
gdisirio 2012-11-16 10:17:06 +00:00
parent d06741a098
commit 94e6acd972
2 changed files with 10 additions and 3 deletions
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11
os/hal/platforms/STM32F4xx/hal_lld.c
View File

@ -208,9 +208,14 @@ void stm32_clock_init(void) {
RCC->CFGR |= STM32_MCO2PRE | STM32_MCO2SEL | STM32_MCO1PRE | STM32_MCO1SEL |
STM32_RTCPRE | STM32_PPRE2 | STM32_PPRE1 | STM32_HPRE;
/* Flash setup.*/
FLASH->ACR = FLASH_ACR_PRFTEN | FLASH_ACR_ICEN | FLASH_ACR_DCEN |
STM32_FLASHBITS;
/* Flash setup.
Some old revisions of F4x MCUs randomly crashes with compiler
optimizations enabled AND flash caches enabled. */
if ((DBGMCU->IDCODE == 0x20006411) && (SCB->CPUID == 0x410FC241))
FLASH->ACR = FLASH_ACR_PRFTEN | STM32_FLASHBITS;
else
FLASH->ACR = FLASH_ACR_PRFTEN | FLASH_ACR_ICEN |
FLASH_ACR_DCEN | STM32_FLASHBITS;
/* Switching to the configured clock source if it is different from MSI.*/
#if (STM32_SW != STM32_SW_HSI)

2
readme.txt
View File

@ -82,6 +82,8 @@
*****************************************************************************
*** 2.5.1 ***
- FIX: Fixed workaround for errata in STM32F4-A devices (bug 3586425)
(backported to 2.4.3).
- FIX: Fixed error in palWritePad() macro (bug 3586230)(backported to 2.2.10
and 2.4.3).
- FIX: Fixed missing ; in testmbox.c (bug 3585979)(backported to 2.4.3).