基于正点原子精英版的PWM输出实验修改
只需修改三个部分的代码即可,根据之前WIFI控制小灯的教程,可以把ESP8266的代码稍作修改,就可以实现WIFI调节亮度。
led.h
#ifndef __LED_H
#define __LED_H
#include "sys.h"
#include "usart.h"
#include "timer.h"
#include "delay.h"
#include "stdio.h"
//
#define LED0 PBout(5)// PB5
#define LED1 PEout(5)// PE5
void LED_Init(void);//初始化
void LED_Ctrl_Up(void);
void LED_Ctrl_Dowm(void);
void LED_Ctrl_Open(void);
void LED_Ctrl_Close(void);
void LED_Ctrl(void);
#endif
led.c
#include "led.h"
static u16 led0pwmval=0; //比较值
void LED_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOE, ENABLE); //使能PB,PE端口时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //LED0-->PB.5 端口配置
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); //根据设定参数初始化GPIOB.5
GPIO_SetBits(GPIOB,GPIO_Pin_5); //PB.5 输出高
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //LED1-->PE.5 端口配置, 推挽输出
GPIO_Init(GPIOE, &GPIO_InitStructure); //推挽输出 ,IO口速度为50MHz
GPIO_SetBits(GPIOE,GPIO_Pin_5); //PE.5 输出高
}
void LED_Ctrl_Up(void)
{
TIM_Cmd(TIM3, ENABLE); //使能TIM3
delay_ms(10);
if(led0pwmval<600)
led0pwmval+=100;
TIM_SetCompare2(TIM3,led0pwmval); //给比较值
}
void LED_Ctrl_Dowm(void)
{
delay_ms(10);
if(led0pwmval>110)
led0pwmval-=100;
TIM_SetCompare2(TIM3,led0pwmval); //给比较值
}
void LED_Ctrl_Close(void)
{
TIM_Cmd(TIM3,DISABLE ); //使能TIM3
LED0=1;
}
void LED_Ctrl_Open(void)
{
TIM_Cmd(TIM3, ENABLE); //使能TIM3
led0pwmval=200;
TIM_SetCompare2(TIM3,led0pwmval);
}
//#D1 关灯 #D0开灯 #T1 加亮度
void LED_Ctrl(void)
{
if(USART_RX_STA&0x8000)
{
if(USART_RX_BUF[0]=='?')
{
printf("#D1开灯rn#D0关灯 rn#T1和#T0调整红灯亮度rn");
}
if(USART_RX_BUF[0]=='#')
{
if(USART_RX_BUF[1]=='D')
{
if(USART_RX_BUF[2]=='0')
{
LED1=1;
LED_Ctrl_Close();
}
if(USART_RX_BUF[2]=='1')
{
LED1=0;
LED_Ctrl_Open();
}
}
if(USART_RX_BUF[1]=='T')
{
if(USART_RX_BUF[2]=='1')
{
LED_Ctrl_Up();
}
if(USART_RX_BUF[2]=='0')
{
LED_Ctrl_Dowm();
}
}
}
USART_RX_STA=0;
}
}
main.c
#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "timer.h"
int main(void)
{
delay_init(); //延时函数初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级,2位响应优先级
uart_init(115200); //串口初始化为115200
LED_Init(); //LED端口初始化
TIM3_PWM_Init(899,0); //不分频。PWM频率=72000000/900=80Khz
printf("#D1开灯rn#D0关灯 rn#T1和#T0调整红灯亮度rn");
while(1)
{
LED_Ctrl();
}
}
基于正点原子精英版的PWM输出实验修改
只需修改三个部分的代码即可,根据之前WIFI控制小灯的教程,可以把ESP8266的代码稍作修改,就可以实现WIFI调节亮度。
led.h
#ifndef __LED_H
#define __LED_H
#include "sys.h"
#include "usart.h"
#include "timer.h"
#include "delay.h"
#include "stdio.h"
//
#define LED0 PBout(5)// PB5
#define LED1 PEout(5)// PE5
void LED_Init(void);//初始化
void LED_Ctrl_Up(void);
void LED_Ctrl_Dowm(void);
void LED_Ctrl_Open(void);
void LED_Ctrl_Close(void);
void LED_Ctrl(void);
#endif
led.c
#include "led.h"
static u16 led0pwmval=0; //比较值
void LED_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOE, ENABLE); //使能PB,PE端口时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //LED0-->PB.5 端口配置
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //IO口速度为50MHz
GPIO_Init(GPIOB, &GPIO_InitStructure); //根据设定参数初始化GPIOB.5
GPIO_SetBits(GPIOB,GPIO_Pin_5); //PB.5 输出高
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; //LED1-->PE.5 端口配置, 推挽输出
GPIO_Init(GPIOE, &GPIO_InitStructure); //推挽输出 ,IO口速度为50MHz
GPIO_SetBits(GPIOE,GPIO_Pin_5); //PE.5 输出高
}
void LED_Ctrl_Up(void)
{
TIM_Cmd(TIM3, ENABLE); //使能TIM3
delay_ms(10);
if(led0pwmval<600)
led0pwmval+=100;
TIM_SetCompare2(TIM3,led0pwmval); //给比较值
}
void LED_Ctrl_Dowm(void)
{
delay_ms(10);
if(led0pwmval>110)
led0pwmval-=100;
TIM_SetCompare2(TIM3,led0pwmval); //给比较值
}
void LED_Ctrl_Close(void)
{
TIM_Cmd(TIM3,DISABLE ); //使能TIM3
LED0=1;
}
void LED_Ctrl_Open(void)
{
TIM_Cmd(TIM3, ENABLE); //使能TIM3
led0pwmval=200;
TIM_SetCompare2(TIM3,led0pwmval);
}
//#D1 关灯 #D0开灯 #T1 加亮度
void LED_Ctrl(void)
{
if(USART_RX_STA&0x8000)
{
if(USART_RX_BUF[0]=='?')
{
printf("#D1开灯rn#D0关灯 rn#T1和#T0调整红灯亮度rn");
}
if(USART_RX_BUF[0]=='#')
{
if(USART_RX_BUF[1]=='D')
{
if(USART_RX_BUF[2]=='0')
{
LED1=1;
LED_Ctrl_Close();
}
if(USART_RX_BUF[2]=='1')
{
LED1=0;
LED_Ctrl_Open();
}
}
if(USART_RX_BUF[1]=='T')
{
if(USART_RX_BUF[2]=='1')
{
LED_Ctrl_Up();
}
if(USART_RX_BUF[2]=='0')
{
LED_Ctrl_Dowm();
}
}
}
USART_RX_STA=0;
}
}
main.c
#include "led.h"
#include "delay.h"
#include "key.h"
#include "sys.h"
#include "usart.h"
#include "timer.h"
int main(void)
{
delay_init(); //延时函数初始化
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级,2位响应优先级
uart_init(115200); //串口初始化为115200
LED_Init(); //LED端口初始化
TIM3_PWM_Init(899,0); //不分频。PWM频率=72000000/900=80Khz
printf("#D1开灯rn#D0关灯 rn#T1和#T0调整红灯亮度rn");
while(1)
{
LED_Ctrl();
}
}
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