stm32数码管显示数字
时间: 2023-09-26 07:09:05 浏览: 187
在使用STM32驱动数码管显示数字时,需要先确定使用的数码管类型(共阳/共阴),以及使用的GPIO口和引脚。以下是一个简单的示例代码,可以实现从0到9的数字在数码管上循环显示:
```c
#include "stm32f10x.h"
// 数码管显示的数字
uint8_t digit[10] = {
0xFC, 0x60, 0xDA, 0xF2, 0x66,
0xB6, 0xBE, 0xE0, 0xFE, 0xF6
};
int main(void)
{
// 初始化GPIO口
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// 数码管循环显示数字
uint8_t i = 0;
while (1) {
GPIO_Write(GPIOA, digit[i]);
i = (i + 1) % 10;
delay_ms(1000);
}
}
```
在这个例子中,我们使用了GPIOA的0~3号引脚来控制数码管的四个数字段,通过循环依次点亮每一个数字段,就可以实现循环显示数字的效果。注意,这里的`delay_ms()`函数需要自己实现,可以使用定时器来实现。
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