TonBERRY/micropython
3
0
Fork 0
Code Pull Requests Activity

stm32/powerctrl: Allow a board to configure AHB and APB clock dividers.

Browse Source 
Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2021-04-07 11:55:07 +10:00
parent a66286f3a0
commit 00963a4e69
3 changed files with 38 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
ports/stm32/system_stm32.c
View File

@@ -272,9 +272,9 @@ void SystemClock_Config(void) {
n = MICROPY_HW_CLK_PLLN;
p = MICROPY_HW_CLK_PLLP;
q = MICROPY_HW_CLK_PLLQ;
h = RCC_SYSCLK_DIV1;
b1 = RCC_HCLK_DIV4;
b2 = RCC_HCLK_DIV2;
h = MICROPY_HW_CLK_AHB_DIV;
b1 = MICROPY_HW_CLK_APB1_DIV;
b2 = MICROPY_HW_CLK_APB2_DIV;
} else {
h <<= 4;
b1 <<= 10;
@@ -285,9 +285,9 @@ void SystemClock_Config(void) {
RCC_OscInitStruct.PLL.PLLP = p; // MICROPY_HW_CLK_PLLP;
RCC_OscInitStruct.PLL.PLLQ = q; // MICROPY_HW_CLK_PLLQ;
RCC_ClkInitStruct.AHBCLKDivider = h; // RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = b1; // RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = b2; // RCC_HCLK_DIV2;
RCC_ClkInitStruct.AHBCLKDivider = h;
RCC_ClkInitStruct.APB1CLKDivider = b1;
RCC_ClkInitStruct.APB2CLKDivider = b2;
#else // defined(MICROPY_HW_CLK_LAST_FREQ) && MICROPY_HW_CLK_LAST_FREQ
RCC_OscInitStruct.PLL.PLLM = MICROPY_HW_CLK_PLLM;
RCC_OscInitStruct.PLL.PLLN = MICROPY_HW_CLK_PLLN;
@@ -304,20 +304,20 @@ void SystemClock_Config(void) {
#endif
#if defined(STM32F4) || defined(STM32F7)
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.AHBCLKDivider = MICROPY_HW_CLK_AHB_DIV;
RCC_ClkInitStruct.APB1CLKDivider = MICROPY_HW_CLK_APB1_DIV;
RCC_ClkInitStruct.APB2CLKDivider = MICROPY_HW_CLK_APB2_DIV;
#elif defined(STM32L4)
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = MICROPY_HW_CLK_AHB_DIV;
RCC_ClkInitStruct.APB1CLKDivider = MICROPY_HW_CLK_APB1_DIV;
RCC_ClkInitStruct.APB2CLKDivider = MICROPY_HW_CLK_APB2_DIV;
#elif defined(STM32H7)
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
RCC_ClkInitStruct.AHBCLKDivider = MICROPY_HW_CLK_AHB_DIV;
RCC_ClkInitStruct.APB3CLKDivider = MICROPY_HW_CLK_APB3_DIV;
RCC_ClkInitStruct.APB1CLKDivider = MICROPY_HW_CLK_APB1_DIV;
RCC_ClkInitStruct.APB2CLKDivider = MICROPY_HW_CLK_APB2_DIV;
RCC_ClkInitStruct.APB4CLKDivider = MICROPY_HW_CLK_APB4_DIV;
#endif
#endif