共15个LDED灯,若手电筒的亮度需要改为全亮、66%亮、33%亮、全灭,keil需要如何编程???
时间: 2023-08-17 16:04:09 浏览: 47
在Keil中编写代码,可以使用STM32的标准库。以下是一个简单的示例代码,实现手电筒的亮度控制:
```c
#include "stm32f10x.h"
#define LED_PORT GPIOA
#define LED_PIN_0 GPIO_Pin_0
#define LED_PIN_1 GPIO_Pin_1
#define LED_PIN_2 GPIO_Pin_2
#define LED_PIN_3 GPIO_Pin_3
#define LED_PIN_4 GPIO_Pin_4
#define LED_PIN_5 GPIO_Pin_5
#define LED_PIN_6 GPIO_Pin_6
#define LED_PIN_7 GPIO_Pin_7
#define LED_PIN_8 GPIO_Pin_8
#define LED_PIN_9 GPIO_Pin_9
#define LED_PIN_10 GPIO_Pin_10
#define LED_PIN_11 GPIO_Pin_11
#define LED_PIN_12 GPIO_Pin_12
#define LED_PIN_13 GPIO_Pin_13
#define LED_PIN_14 GPIO_Pin_14
void set_led_full_brightness(void)
{
GPIO_SetBits(LED_PORT, LED_PIN_0 | LED_PIN_1 | LED_PIN_2 | LED_PIN_3 | LED_PIN_4 | LED_PIN_5 | LED_PIN_6 | LED_PIN_7 | LED_PIN_8 | LED_PIN_9 | LED_PIN_10 | LED_PIN_11 | LED_PIN_12 | LED_PIN_13 | LED_PIN_14);
}
void set_led_66_brightness(void)
{
GPIO_SetBits(LED_PORT, LED_PIN_0 | LED_PIN_2 | LED_PIN_4 | LED_PIN_6 | LED_PIN_8 | LED_PIN_10 | LED_PIN_12 | LED_PIN_14);
GPIO_ResetBits(LED_PORT, LED_PIN_1 | LED_PIN_3 | LED_PIN_5 | LED_PIN_7 | LED_PIN_9 | LED_PIN_11 | LED_PIN_13);
}
void set_led_33_brightness(void)
{
GPIO_SetBits(LED_PORT, LED_PIN_0 | LED_PIN_4 | LED_PIN_8 | LED_PIN_12);
GPIO_ResetBits(LED_PORT, LED_PIN_1 | LED_PIN_2 | LED_PIN_3 | LED_PIN_5 | LED_PIN_6 | LED_PIN_7 | LED_PIN_9 | LED_PIN_10 | LED_PIN_11 | LED_PIN_13 | LED_PIN_14);
}
void set_led_off(void)
{
GPIO_ResetBits(LED_PORT, LED_PIN_0 | LED_PIN_1 | LED_PIN_2 | LED_PIN_3 | LED_PIN_4 | LED_PIN_5 | LED_PIN_6 | LED_PIN_7 | LED_PIN_8 | LED_PIN_9 | LED_PIN_10 | LED_PIN_11 | LED_PIN_12 | LED_PIN_13 | LED_PIN_14);
}
int main()
{
// 初始化GPIO
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = LED_PIN_0 | LED_PIN_1 | LED_PIN_2 | LED_PIN_3 | LED_PIN_4 | LED_PIN_5 | LED_PIN_6 | LED_PIN_7 | LED_PIN_8 | LED_PIN_9 | LED_PIN_10 | LED_PIN_11 | LED_PIN_12 | LED_PIN_13 | LED_PIN_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(LED_PORT, &GPIO_InitStructure);
while(1)
{
set_led_full_brightness(); // 全亮
delay(1000);
set_led_66_brightness(); // 66%亮
delay(1000);
set_led_33_brightness(); // 33%亮
delay(1000);
set_led_off(); // 全灭
delay(1000);
}
}
```
在这个示例代码中,我们使用了STM32的标准库,并且定义了四个函数来控制LED的状态。在主函数中,我们循环调用这些函数,以实现手电筒的亮度控制。请注意,这个代码示例仅供参考,您需要根据您的具体硬件和需求进行适当的修改。