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🧑‍💻 STM32G0Bx : Use PLLQ for USB clock (#23870)

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BIGTREETECH 2022-03-12 08:23:18 +08:00 committed by Scott Lahteine
parent 61fb382868
commit 16271377e2
1 changed files with 19 additions and 10 deletions
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29
buildroot/share/PlatformIO/variants/MARLIN_G0B1RE/variant_MARLIN_STM32G0B1RE.cpp
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@ -115,11 +115,11 @@ extern "C" {
* AHB Prescaler = 1 * AHB Prescaler = 1
* APB1 Prescaler = 1 * APB1 Prescaler = 1
* PLL_M = 1 * PLL_M = 1
* PLL_N = 16 * PLL_N = 24
* PLL_R = 2 * PLL_R = 3
* PLL_P = 2 * PLL_P = 2
* PLL_Q = 2 * PLL_Q = 4
* USB(Hz) = 48000000 (HSI48M) * USB(Hz) = 48000000 (PLLQ)
* @param None * @param None
* @retval None * @retval None
*/ */
@ -129,22 +129,31 @@ WEAK void SystemClock_Config(void)
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
// Reset clock registers (in case bootloader has changed them)
RCC->CR |= RCC_CR_HSION;
while (!(RCC->CR & RCC_CR_HSIRDY))
;
RCC->CFGR = 0x00000000;
RCC->CR = RCC_CR_HSION;
while (RCC->CR & RCC_CR_PLLRDY)
;
RCC->PLLCFGR = 0x00001000;
/** Configure the main internal regulator output voltage /** Configure the main internal regulator output voltage
*/ */
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1); HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters /** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure. * in the RCC_OscInitTypeDef structure.
*/ */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_HSI48; RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;
RCC_OscInitStruct.PLL.PLLN = 16; RCC_OscInitStruct.PLL.PLLN = 24;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV4;
RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV3;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{ {
Error_Handler(); Error_Handler();
@ -164,7 +173,7 @@ WEAK void SystemClock_Config(void)
/** Initializes the peripherals clocks /** Initializes the peripherals clocks
*/ */
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB; PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48; PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{ {
Error_Handler(); Error_Handler();