一、前期准备

单片机：STM32F103ZET6

开发环境：MDK5.14

库函数：标准库V3.5

RGB LED模块：淘宝有售

二、实验效果

类似奥迪转向灯，灯以此亮起，如此循环。颜色256 * 256 * 256色可调。

三、驱动原理

模块上面的RGB引脚低电平有效，LED灯IO口也是低电平有效。

四、驱动代码

led.h

#ifndef __LED_H__

#define __LED_H__

#include "stm32f10x.h"

#include "gpio.h"

#include "pwm.h"

#define LED_R PAout(1)

#define LED_G PAout(2)

#define LED_B PAout(3)

#define RGB_LED1 PGout(8)

#define RGB_LED2 PGout(9)

#define RGB_LED3 PGout(10)

#define RGB_LED4 PGout(11)

#define RGB_LED5 PGout(12)

#define RGB_LED6 PGout(13)

#define RGB_LED7 PGout(14)

#define RGB_LED8 PGout(15)

extern void LEDConfiguration(void);

#endif

led.C

#include  "led.h"

void LEDConfiguration(void)

{

GPIO_InitTypeDef    GPIO;

    //Enable APB2 Bus

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG, ENABLE);

GPIO.GPIO_Pin = 0xff00;

GPIO.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOG, &GPIO);

LED_R = OFF;

LED_G = OFF;

LED_B = OFF;

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

PWMConfiguration();

}

APP.c

#include "app.h"

void LED_PWM(__led LEDx, uint32_t RGBVlaue)

{

switch(LEDx)

{

case LED1:

RGB_LED1 = ON;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED2:

RGB_LED1 = OFF;

RGB_LED2 = ON;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED3:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = ON;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED4:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = ON;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED5:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = ON;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED6:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = ON;

RGB_LED7 = OFF;

RGB_LED8 = OFF;

break;

case LED7:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = ON;

RGB_LED8 = OFF;

break;

case LED8:

RGB_LED1 = OFF;

RGB_LED2 = OFF;

RGB_LED3 = OFF;

RGB_LED4 = OFF;

RGB_LED5 = OFF;

RGB_LED6 = OFF;

RGB_LED7 = OFF;

RGB_LED8 = ON;

break;

}

TIM_SetCompare2(TIM2, (uint8_t)(RGBVlaue / 65536 % 256));

TIM_SetCompare3(TIM2, (uint8_t)(RGBVlaue % 65536 / 256));

TIM_SetCompare4(TIM2, (uint8_t)(RGBVlaue % 256));

}