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ST32F4Discovery board.h patches from Freddie Chopin

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5291 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-11-01 15:31:10 +00:00
parent 55265bfb4d
commit d2e6e40f66
2 changed files with 7 additions and 4 deletions
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3
ChangeLog
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@ -3545,3 +3545,6 @@
lib_feof.c, and lib_clearerr.c: Add support for ferror(), feof(),
and clearerror(). ferror() support is bogus at the moment (it
is equivalent to !feof()); the others should be good.
* configs/stm32f4discovery/include/board.h: Correct timer 2-7
base frequency (provided by Freddie Chopin).

8
configs/stm32f4discovery/include/board.h
View File

@ -66,7 +66,7 @@
* AHB Prescaler : 1 (STM32_RCC_CFGR_HPRE)
* APB1 Prescaler : 4 (STM32_RCC_CFGR_PPRE1)
* APB2 Prescaler : 2 (STM32_RCC_CFGR_PPRE2)
* HSE Frequency(Hz) : 25000000 (STM32_BOARD_XTAL)
* HSE Frequency(Hz) : 8000000 (STM32_BOARD_XTAL)
* PLLM : 8 (STM32_PLLCFG_PLLM)
* PLLN : 336 (STM32_PLLCFG_PLLN)
* PLLP : 2 (STM32_PLLCFG_PLLP)
@ -82,7 +82,7 @@
/* HSI - 16 MHz RC factory-trimmed
* LSI - 32 KHz RC
* HSE - On-board crystal frequency is 25MHz
* HSE - On-board crystal frequency is 8MHz
* LSE - 32.768 kHz
*/
@ -97,7 +97,7 @@
*
* PLL source is HSE
* PLL_VCO = (STM32_HSE_FREQUENCY / PLLM) * PLLN
* = (25,000,000 / 25) * 336
* = (8,000,000 / 8) * 336
* = 336,000,000
* SYSCLK = PLL_VCO / PLLP
* = 336,000,000 / 2 = 168,000,000
@ -155,7 +155,7 @@
*/
#define STM32_TIM18_FREQUENCY STM32_HCLK_FREQUENCY
#define STM32_TIM27_FREQUENCY STM32_HCLK_FREQUENCY
#define STM32_TIM27_FREQUENCY (STM32_HCLK_FREQUENCY/2)
/* LED definitions ******************************************************************/
/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in any