101 lines
3.2 KiB
C
101 lines
3.2 KiB
C
|
|
#include "led.h"
|
|
#include "uart_log.h"
|
|
#include "ltimer.h"
|
|
#include "stdio.h"
|
|
|
|
void system_init(void)
|
|
{
|
|
/* Enable I-Cache */
|
|
SCB_EnableICache();
|
|
/* Enable D-Cache */
|
|
SCB_EnableDCache();
|
|
|
|
/* STM32H7xx HAL library initialization:
|
|
- Configure the Systick to generate an interrupt each 1 msec
|
|
- Set NVIC Group Priority to 4
|
|
- Low Level Initialization
|
|
*/
|
|
HAL_Init();
|
|
|
|
RCC_ClkInitTypeDef RCC_ClkInitStruct;
|
|
RCC_OscInitTypeDef RCC_OscInitStruct;
|
|
HAL_StatusTypeDef ret = HAL_OK;
|
|
|
|
/*!< Supply configuration update enable */
|
|
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY); /* PWR set to LDO for the STM32H750B-DISCO board */
|
|
|
|
/* The voltage scaling allows optimizing the power consumption when the device is
|
|
clocked below the maximum system frequency, to update the voltage scaling value
|
|
regarding system frequency refer to product datasheet. */
|
|
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
|
|
|
|
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
|
|
|
|
/* Enable HSE Oscillator and activate PLL with HSE as source */
|
|
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
|
|
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
|
|
RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
|
|
RCC_OscInitStruct.CSIState = RCC_CSI_OFF;
|
|
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
|
|
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
|
|
|
|
RCC_OscInitStruct.PLL.PLLM = 5;
|
|
RCC_OscInitStruct.PLL.PLLN = 160;
|
|
RCC_OscInitStruct.PLL.PLLFRACN = 0;
|
|
RCC_OscInitStruct.PLL.PLLP = 2;
|
|
RCC_OscInitStruct.PLL.PLLR = 2;
|
|
RCC_OscInitStruct.PLL.PLLQ = 4;
|
|
|
|
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
|
|
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
|
|
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
|
|
if(ret != HAL_OK) {
|
|
while(1);
|
|
}
|
|
|
|
/* Select PLL as system clock source and configure bus clocks dividers */
|
|
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_D1PCLK1 | RCC_CLOCKTYPE_PCLK1 | \
|
|
RCC_CLOCKTYPE_PCLK2 | RCC_CLOCKTYPE_D3PCLK1);
|
|
|
|
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
|
|
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;
|
|
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
|
|
if(ret != HAL_OK) {
|
|
while(1);
|
|
}
|
|
|
|
led_init(LED_PIN);
|
|
uart_log_init();
|
|
ltimer_init();
|
|
}
|
|
|
|
void led_blink(void)
|
|
{
|
|
led_on(LED_PIN);
|
|
led_off(LED_PIN);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
system_init();
|
|
printf("Run start ...\r\n");
|
|
printf("SystemCoreClock = %ld\r\n", SystemCoreClock);
|
|
printf("SystemD2Clock = %ld\r\n", SystemD2Clock);
|
|
|
|
while (1) {
|
|
uint64_t ms;
|
|
ms = ltimer_get_ms();
|
|
printf("Hello World, ms = %llu\r\n", ms);
|
|
led_blink();
|
|
ltimer_delay_ms(1000);
|
|
}
|
|
|
|
return 0;
|
|
}
|