LED閃爍的程序源碼：
#include "main.h"
#include <stdio.h>
#include <stdint.h>
/**
* @brief Main program.
*/
int main(void)
{
/*SystemInit() function has been called by startup file startup_n32g031.s*/
/* Initialize Led1~Led3 as output pushpull mode*/
LedInit(PORT_GROUP, LED1_PIN | LED2_PIN | LED3_PIN);
/*Turn on Led1~Led3*/
LedOn(PORT_GROUP, LED1_PIN | LED2_PIN | LED3_PIN);
while (1)
{
/*LED1_PORT, LED2_PORT and LED3_PORT are the same port group.
*Enable Led2 blink and not effect Led1 and Led2 by Exclusive-OR operation.*/
LedBlink(PORT_GROUP, LED2_PIN);
LedOff(PORT_GROUP, LED3_PIN);
/* Insert delay */
Delay(0x28FFFF);
LedOff(PORT_GROUP, LED1_PIN);
Delay(0x28FFFF);
LedOn(PORT_GROUP, LED1_PIN | LED3_PIN);
Delay(0x28FFFF);
}
}
void Delay(uint32_t count)
{
for (; count > 0; count--)
;
}void LedInit(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIO_InitType GPIO_InitStructure;
/* Check the parameters */
assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
/* Enable the GPIO Clock */
if (GPIOx == GPIOA)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOA, ENABLE);
}
else if (GPIOx == GPIOB)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOB, ENABLE);
}
else if (GPIOx == GPIOC)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOC, ENABLE);
}
else if (GPIOx == GPIOF)
{
RCC_EnableAPB2PeriphClk(RCC_APB2_PERIPH_GPIOF, ENABLE);
}
else
{
return;
}
/* Configure the GPIO pin */
if (Pin <= GPIO_PIN_ALL)
{
GPIO_InitStruct(&GPIO_InitStructure);
GPIO_InitStructure.Pin = Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitPeripheral(GPIOx, &GPIO_InitStructure);
}
}
void LedOn(GPIO_Module *GPIOx, uint16_t Pin)
{
GPIO_SetBits(GPIOx, Pin);
}
void LedOff(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIO_ResetBits(GPIOx, Pin);
}void LedBlink(GPIO_Module* GPIOx, uint16_t Pin)
{
GPIO_TogglePin(GPIOx, Pin);
}
#ifdef USE_FULL_ASSERT
void assert_failed(const uint8_t* expr, const uint8_t* file, uint32_t line)
{
while (1)
{
}
}
#endif // USE_FULL_ASSERT
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