(蓝桥杯嵌入式)LED模块

目录

1.LED不受控制解决办法:

2.led.c

3.led.h

4.流水灯的实现

1.LED不受控制解决办法:

在lcd中操作GPIOC引脚时,先将GPIOC引脚状态保存,修改下面三个函数即可

void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue);
void LCD_WriteRAM_Prepare(void);
void LCD_WriteRAM(u16 RGB_Code);

 示列:

void LCD_WriteReg(u8 LCD_Reg, u16 LCD_RegValue)
{
	unsigned short PCOUT=GPIOC->ODR;
	GPIOB->BRR = 0x0200;  
	GPIOB->BRR = 0x0100;  
	GPIOB->BSRR = 0x0020; 

	GPIOC->ODR = LCD_Reg; 
	GPIOB->BRR = 0x0020; 
	GPIOB->BSRR = 0x0020; 
	GPIOB->BSRR = 0x0100; 

	GPIOC->ODR = LCD_RegValue; 
	GPIOB->BRR = 0x0020;   
	GPIOB->BSRR = 0x0020; 
	GPIOB->BSRR = 0x0100; 
	GPIOC->ODR=PCOUT;
}

2.led.c

#include "led.h"

//lcd中已经将PC端口全部初始化,这里只需要初始化LE即可
void led_le_gpio_init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);
  
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(GPIOD, &GPIO_InitStructure);
}

void led_congtrol(u8 ctl, u8 led_state)
{
	if(led_state)
	{
		GPIO_ResetBits(GPIOC,ctl<<8);
		GPIO_SetBits(GPIOD,GPIO_Pin_2);
		GPIO_ResetBits(GPIOD,GPIO_Pin_2);
	}
	else
  {
		GPIO_SetBits(GPIOC,ctl<<8);
	 	GPIO_SetBits(GPIOD,GPIO_Pin_2);
		GPIO_ResetBits(GPIOD,GPIO_Pin_2);
  }
}

3.led.h


#ifndef __LED_H
#define __LED_H

#include "stm32f10x.h"


void led_le_gpio_init(void);
void led_congtrol(u8 ctl, u8 led_state);



#endif /* __LED_H */

4.流水灯的实现

ledcount在1ms定时中断中每1ms加一

	if(ledcount<=80)
	{
		led_congtrol(0x10<3)
		{
			i=0;
		}
		ledcount=0;
	}

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