Xiaohai Li / NUCLEO-F030R8_ExtXtalTest

NUCLEO-F030R8_ExtXtalTest

Dependencies:   nights-mbed-src

main.cpp@2:216033df37ae, 2015-08-18 (annotated)

Committer:
nightseas
Date:
Tue Aug 18 10:35:14 2015 +0000
Revision:
2:216033df37ae
Parent:
1:c297d1519b5c 
Verified with external 8MHz crystal

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nightseas 0:190f0f0f96b5 1 #include "mbed.h"
nightseas 0:190f0f0f96b5 2
nightseas 0:190f0f0f96b5 3 DigitalOut myled(PB_12);
nightseas 0:190f0f0f96b5 4
nightseas 0:190f0f0f96b5 5 void SystemClock_Config(void)
nightseas 0:190f0f0f96b5 6 {
nightseas 0:190f0f0f96b5 7 RCC_OscInitTypeDef RCC_OscInitStruct;
nightseas 0:190f0f0f96b5 8 RCC_ClkInitTypeDef RCC_ClkInitStruct;
nightseas 0:190f0f0f96b5 9
nightseas 0:190f0f0f96b5 10 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
nightseas 0:190f0f0f96b5 11 RCC_OscInitStruct.HSEState = RCC_HSE_ON;
nightseas 0:190f0f0f96b5 12 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
nightseas 0:190f0f0f96b5 13 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
nightseas 0:190f0f0f96b5 14 RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL6;
nightseas 0:190f0f0f96b5 15 RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV1;
nightseas 0:190f0f0f96b5 16 HAL_RCC_OscConfig(&RCC_OscInitStruct);
nightseas 0:190f0f0f96b5 17
nightseas 0:190f0f0f96b5 18 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
nightseas 0:190f0f0f96b5 19 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
nightseas 0:190f0f0f96b5 20 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
nightseas 0:190f0f0f96b5 21 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
nightseas 0:190f0f0f96b5 22 HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);
nightseas 0:190f0f0f96b5 23
nightseas 0:190f0f0f96b5 24 SystemCoreClockUpdate();
nightseas 0:190f0f0f96b5 25 }
nightseas 0:190f0f0f96b5 26
nightseas 0:190f0f0f96b5 27 int main() {
nightseas 0:190f0f0f96b5 28
nightseas 1:c297d1519b5c 29 //SystemClock_Config();
nightseas 0:190f0f0f96b5 30
nightseas 0:190f0f0f96b5 31 printf("SystemCoreClock = %d Hz\n\r", SystemCoreClock);
nightseas 0:190f0f0f96b5 32
nightseas 0:190f0f0f96b5 33 while(1) {
nightseas 0:190f0f0f96b5 34 myled = !myled;
nightseas 2:216033df37ae 35 wait(0.5);
nightseas 0:190f0f0f96b5 36 }
nightseas 0:190f0f0f96b5 37 }