mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-31 01:42:04 -07:00
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/**
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******************************************************************************
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* Switch System Clock Source To HSE with PLL
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*
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* -- Edit py32f0xx_hal_conf.h, change HSE_VALUE according to the frequency
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* of your crystal oscillator.
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* -- If the frequency is incorrect, the printf output will be garbled.
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* -- If the crystal oscillator is not working or not connected, the LED stops
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* blink.
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* -- SystemCoreClock = F_osc x 2
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "py32f0xx_hal.h"
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#include "py32f0xx_bsp_printf.h"
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/* Private define ------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private user code ---------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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void APP_ErrorHandler(void);
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static void APP_SystemClockConfig(void);
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static void APP_LedConfig(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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__HAL_RCC_GPIOB_CLK_ENABLE();
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GPIO_InitStruct.Pin = GPIO_PIN_5;
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GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
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GPIO_InitStruct.Pull = GPIO_PULLDOWN;
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GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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}
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int main(void)
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{
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HAL_Init();
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/* Switch system clock to HSE */
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APP_SystemClockConfig();
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APP_LedConfig();
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BSP_USART_Config();
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while (1)
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{
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HAL_Delay(500);
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HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);
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printf("Clock: %ld \r\n", SystemCoreClock);
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}
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}
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static void APP_SystemClockConfig(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON; /* Turn on HSE */
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RCC_OscInitStruct.HSEFreq = RCC_HSE_16_32MHz; /* HSE frequency range */
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; /* PLL ON */
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; /* PLL clock source from HSE (freq >= 12MHz) */
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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APP_ErrorHandler();
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}
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; /* Set PLL as SYSCLK source */
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; /* APH no division */
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; /* APB no division */
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/*
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* Re-initialize RCC clock
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* -- clock <= 24MHz: FLASH_LATENCY_0
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* -- clock > 24MHz: FLASH_LATENCY_1
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*/
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
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{
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APP_ErrorHandler();
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}
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}
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void APP_ErrorHandler(void)
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{
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while (1);
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Export assert error source and line number
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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while (1)
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{
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}
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}
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#endif /* USE_FULL_ASSERT */
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/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
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