注意需要进行定时器的引脚复用，不然不得。
#include "al422b.h"
#include "usart.h"
u8 TIM3_CAPTURE_STA=0; //输入捕获状态
u16 TIM3_CAPTURE_VAL; //输入捕获值
u8 TIM4_CAPTURE_STA=0; //输入捕获状态
u16 TIM4_CAPTURE_VAL; //输入捕获值
void AL422B_wen_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义GPIO结构体
NVIC_InitTypeDef NVIC_InitStructure; //定义中断优先级结构体
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; //定义TIM2定时器结构体
TIM_ICInitTypeDef TIM_ICInitStructure; //定义输入捕获结构体
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
//配置中断优先级分组GPIO_FullRemap_TIM3 GPIO_PartialRemap_TIM3
GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE); //Timer3部分重映射
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);
//使能TIM2时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); //使能GPIOA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; //PA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //下拉输入模式
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件活动的自动装载寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler = psc; //设置用来作为TIMx时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割：TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数
TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
TIM_ICInitStructure.TIM_Channel = TIM_Channel_3; //选择输入端IC1映射到TI1上
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿捕获
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
//TIM_ICSelection_IndirectTI TIM_ICSelection_DirectTI
TIM_ICInitStructure.TIM_ICPrescaler = 0; //配置输入分频,不分频
TIM_ICInitStructure.TIM_ICFilter = 0x00; //IC1F=0000配置输入滤波器 不滤波
TIM_ICInit(TIM3,&TIM_ICInitStructure);
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM2中断源
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级0级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化外设NVIC寄存器
TIM_ClearITPendingBit(TIM3,TIM_IT_Update|TIM_IT_CC3); //清除中断标志位
TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_CC3,ENABLE); //允许更新中断CC3IE捕获中断
TIM_Cmd(TIM3,ENABLE ); //使能定时器3
// printf("dddd\r\n");
}
void TIM3_IRQHandler(void) //TIM3中断服务函数
{
if((TIM3_CAPTURE_STA & 0X80) == 0) //还未成功捕获,最高位是捕获完成的标志位，
{
if((TIM_GetITStatus(TIM3,TIM_IT_Update) != RESET))
{
//printf("1111\r\n");
if(TIM3_CAPTURE_STA & 0X40) //已经捕获到高电平了
{
if((TIM3_CAPTURE_STA & 0X3F) == 0X3F) //高电平太长了,设置一个最大值
{
TIM3_CAPTURE_STA |= 0X80; //标记成功捕获了一次
TIM3_CAPTURE_VAL = 0XFFFF;
// printf("2222\r\n");
}
else TIM3_CAPTURE_STA++;//捕获状态加1
}
}
if(TIM_GetITStatus(TIM3,TIM_IT_CC3) != RESET) //捕获 1 发生捕获事件
{
// printf("3333\r\n");
if(TIM3_CAPTURE_STA & 0X40) //捕获到一个下降沿
{
TIM3_CAPTURE_STA |= 0X80; //标记成功捕获到一次上升沿
TIM3_CAPTURE_VAL = TIM_GetCapture3(TIM3);
TIM_OC3PolarityConfig(TIM3,TIM_ICPolarity_Rising);//CC1P=0 设置为上升沿捕获
}
else //还未开始,第一次捕获上升沿
{
TIM3_CAPTURE_STA = 0; //清空
TIM3_CAPTURE_VAL = 0;
TIM_SetCounter(TIM3,0);
TIM3_CAPTURE_STA |= 0X40; //标记捕获到了上升沿
TIM_OC3PolarityConfig(TIM3,TIM_ICPolarity_Falling); //CC1P=1 设置为下降沿捕获
}
TIM_ClearFlag(TIM3, TIM_FLAG_CC3); //清除状态标志
}
}
TIM_ClearITPendingBit(TIM3,TIM_IT_Update|TIM_IT_CC3); //清除中断标志位
}
//Tim4 CH4 ,,PD15
void AL422B_sh_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义GPIO结构体
NVIC_InitTypeDef NVIC_InitStructure; //定义中断优先级结构体
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; //定义TIM2定时器结构体
TIM_ICInitTypeDef TIM_ICInitStructure; //定义输入捕获结构体
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
//配置中断优先级分组GPIO_FullRemap_TIM3 GPIO_PartialRemap_TIM3
GPIO_PinRemapConfig(GPIO_Remap_TIM4, ENABLE); //Timer3部分重映射
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4,ENABLE);
//使能TIM2时钟
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD,ENABLE); //使能GPIOA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; //PA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //下拉输入模式
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOD,&GPIO_InitStructure);
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件活动的自动装载寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler = psc; //设置用来作为TIMx时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割：TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数
TIM_TimeBaseInit(TIM4,&TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
TIM_ICInitStructure.TIM_Channel = TIM_Channel_4; //选择输入端IC1映射到TI1上
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿捕获
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
//TIM_ICSelection_IndirectTI TIM_ICSelection_DirectTI
TIM_ICInitStructure.TIM_ICPrescaler = 0; //配置输入分频,不分频
TIM_ICInitStructure.TIM_ICFilter = 0x00; //IC1F=0000配置输入滤波器 不滤波
TIM_ICInit(TIM4,&TIM_ICInitStructure);
NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; //TIM2中断源
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级2级
NVIC_InitStructure.NVIC_IRQChannelSubPriority =0; //子优先级0级
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化外设NVIC寄存器
TIM_ClearITPendingBit(TIM4,TIM_IT_Update|TIM_IT_CC4); //清除中断标志位
TIM_ITConfig(TIM4,TIM_IT_Update|TIM_IT_CC4,ENABLE); //允许更新中断CC3IE捕获中断
TIM_Cmd(TIM4,ENABLE ); //使能定时器3
printf("dddd\r\n");
}
void TIM4_IRQHandler(void) //TIM3中断服务函数
{
if((TIM4_CAPTURE_STA & 0X80) == 0) //还未成功捕获,最高位是捕获完成的标志位，
{
if((TIM_GetITStatus(TIM4,TIM_IT_Update) != RESET))
{
//printf("444\r\n");
if(TIM4_CAPTURE_STA & 0X40) //已经捕获到高电平了
{
if((TIM4_CAPTURE_STA & 0X3F) == 0X3F) //高电平太长了,设置一个最大值
{
TIM4_CAPTURE_STA |= 0X80; //标记成功捕获了一次
TIM4_CAPTURE_VAL = 0XFFFF;
// printf("2222\r\n");
}
else TIM4_CAPTURE_STA++;//捕获状态加1
}
}
if(TIM_GetITStatus(TIM4,TIM_IT_CC4) != RESET) //捕获 1 发生捕获事件
{
// printf("445\r\n");
if(TIM4_CAPTURE_STA & 0X40) //捕获到一个下降沿
{
TIM4_CAPTURE_STA |= 0X80; //标记成功捕获到一次上升沿
TIM4_CAPTURE_VAL = TIM_GetCapture4(TIM4);
TIM_OC4PolarityConfig(TIM4,TIM_ICPolarity_Rising);//CC1P=0 设置为上升沿捕获
}
else //还未开始,第一次捕获上升沿
{
TIM4_CAPTURE_STA = 0; //清空
TIM4_CAPTURE_VAL = 0;
TIM_SetCounter(TIM4,0);
TIM4_CAPTURE_STA |= 0X40; //标记捕获到了上升沿
TIM_OC4PolarityConfig(TIM4,TIM_ICPolarity_Falling); //CC1P=1 设置为下降沿捕获
}
TIM_ClearFlag(TIM4, TIM_FLAG_CC4); //清除状态标志
}
}
TIM_ClearITPendingBit(TIM4,TIM_IT_Update|TIM_IT_CC4); //清除中断标志位
}
#ifndef __AL422B_H
#define __AL422B_H
#include "stm32f10x.h"
extern u8 TIM3_CAPTURE_STA; //输入捕获状态 PC8，wen
extern u16 TIM3_CAPTURE_VAL; //输入捕获值
extern u8 TIM4_CAPTURE_STA; //输入捕获状态 PD15，sh
extern u16 TIM4_CAPTURE_VAL; //输入捕获值
/*---------------------- 配置宏 --- 控制宏 -----------------------*/
//对应OS1 D11 ----D8
#define WRST1_PIN GPIO_Pin_11 // LED1 引脚
#define WRST1_PORT GPIOD // LED1 GPIO端口
#define WRST1_CLK RCC_APB2Periph_GPIOD // LED1 GPIO端口时钟
#define WRST1_High GPIO_ResetBits(WRST1_PORT,WRST1_PIN);// 输出低电平，点亮LED1
#define WRST1_Low GPIO_SetBits(WRST1_PORT,WRST1_PIN);// 输出高电平，关闭LED1
#define OE1_PIN GPIO_Pin_10 // LED1 引脚
#define OE1_PORT GPIOD // LED1 GPIO端口
#define OE1_CLK RCC_APB2Periph_GPIOD // LED1 GPIO端口时钟
#define OE1_High GPIO_ResetBits(OE1_PORT,OE1_PIN);// 输出低电平，点亮LED1
#define OE1_Low GPIO_SetBits(OE1_PORT,OE1_PIN);// 输出高电平，关闭LED1
#define RRST1_PIN GPIO_Pin_9 // LED1 引脚
#define RRST1_PORT GPIOD // LED1 GPIO端口
#define RRST1_CLK RCC_APB2Periph_GPIOD // LED1 GPIO端口时钟
#define RRST1_High GPIO_ResetBits(RRST1_PORT,RRST1_PIN);// 输出低电平，点亮LED1
#define RRST1_Low GPIO_SetBits(RRST1_PORT,RRST1_PIN);// 输出高电平，关闭LED1
#define RCK1_PIN GPIO_Pin_8 // LED1 引脚
#define RCK1_PORT GPIOD // LED1 GPIO端口
#define RCK1_CLK RCC_APB2Periph_GPIOD // LED1 GPIO端口时钟
#define RCK1_High GPIO_ResetBits(RCK1_PORT,RCK1_PIN);// 输出低电平，点亮LED1
#define RCK1_Low GPIO_SetBits(RCK1_PORT,RCK1_PIN);// 输出高电平，关闭LED1
/*---------------------- 配置宏 --- 控制宏 -----------------------*/
//对应OS2 B15 ----B12
#define WRST2_PIN GPIO_Pin_15 // LED1 引脚
#define WRST2_PORT GPIOB // LED1 GPIO端口
#define WRST2_CLK RCC_APB2Periph_GPIOB // LED1 GPIO端口时钟
#define WRST2_High GPIO_ResetBits(WRST2_PORT,WRST2_PIN);// 输出低电平，点亮LED1
#define WRST2_Low GPIO_SetBits(WRST2_PORT,WRST2_PIN);// 输出高电平，关闭LED1
#define OE2_PIN GPIO_Pin_14 // LED1 引脚
#define OE2_PORT GPIOB // LED1 GPIO端口
#define OE2_CLK RCC_APB2Periph_GPIOB // LED1 GPIO端口时钟
#define OE2_High GPIO_ResetBits(OE2_PORT,OE2_PIN);// 输出低电平，点亮LED1
#define OE2_Low GPIO_SetBits(OE2_PORT,OE2_PIN);// 输出高电平，关闭LED1
#define RRST2_PIN GPIO_Pin_13 // LED1 引脚
#define RRST2_PORT GPIOB // LED1 GPIO端口
#define RRST2_CLK RCC_APB2Periph_GPIOB // LED1 GPIO端口时钟
#define RRST2_High GPIO_ResetBits(RRST2_PORT,RRST2_PIN);// 输出低电平，点亮LED1
#define RRST2_Low GPIO_SetBits(RRST2_PORT,RRST2_PIN);// 输出高电平，关闭LED1
#define RCK2_PIN GPIO_Pin_12 // LED1 引脚
#define RCK2_PORT GPIOB // LED1 GPIO端口
#define RCK2_CLK RCC_APB2Periph_GPIOB // LED1 GPIO端口时钟
#define RCK2_High GPIO_ResetBits(RCK2_PORT,RCK2_PIN);// 输出低电平，点亮LED1
#define RCK2_Low GPIO_SetBits(RCK2_PORT,RCK2_PIN);// 输出高电平，关闭LED1
/*---------------------- 配置宏 --- 控制宏 -----------------------*/
//对应OS3 E15 ----E12
#define WRST3_PIN GPIO_Pin_15 // LED1 引脚
#define WRST3_PORT GPIOE // LED1 GPIO端口
#define WRST3_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define WRST3_High GPIO_ResetBits(WRST3_PORT,WRST3_PIN);// 输出低电平，点亮LED1
#define WRST3_Low GPIO_SetBits(WRST3_PORT,WRST3_PIN);// 输出高电平，关闭LED1
#define OE3_PIN GPIO_Pin_14 // LED1 引脚
#define OE3_PORT GPIOE // LED1 GPIO端口
#define OE3_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define OE3_High GPIO_ResetBits(OE3_PORT,OE3_PIN);// 输出低电平，点亮LED1
#define OE3_Low GPIO_SetBits(OE3_PORT,OE3_PIN);// 输出高电平，关闭LED1
#define RRST3_PIN GPIO_Pin_13 // LED1 引脚
#define RRST3_PORT GPIOE // LED1 GPIO端口
#define RRST3_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define RRST3_High GPIO_ResetBits(RRST3_PORT,RRST3_PIN);// 输出低电平，点亮LED1
#define RRST3_Low GPIO_SetBits(RRST3_PORT,RRST3_PIN);// 输出高电平，关闭LED1
#define RCK3_PIN GPIO_Pin_12 // LED1 引脚
#define RCK3_PORT GPIOE // LED1 GPIO端口
#define RCK3_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define RCK3_High GPIO_ResetBits(RCK3_PORT,RCK3_PIN);// 输出低电平，点亮LED1
#define RCK3_Low GPIO_SetBits(RCK3_PORT,RCK3_PIN);// 输出高电平，关闭LED1
/*---------------------- 配置宏 --- 控制宏 -----------------------*/
//对应OS4 E11 ----E8
#define WRST4_PIN GPIO_Pin_11 // LED1 引脚
#define WRST4_PORT GPIOE // LED1 GPIO端口
#define WRST4_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define WRST4_High GPIO_ResetBits(WRST4_PORT,WRST4_PIN);// 输出低电平，点亮LED1
#define WRST4_Low GPIO_SetBits(WRST4_PORT,WRST4_PIN);// 输出高电平，关闭LED1
#define OE4_PIN GPIO_Pin_10 // LED1 引脚
#define OE4_PORT GPIOE // LED1 GPIO端口
#define OE4_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define OE4_High GPIO_ResetBits(OE4_PORT,OE4_PIN);// 输出低电平，点亮LED1
#define OE4_Low GPIO_SetBits(OE4_PORT,OE4_PIN);// 输出高电平，关闭LED1
#define RRST4_PIN GPIO_Pin_9 // LED1 引脚
#define RRST4_PORT GPIOE // LED1 GPIO端口
#define RRST4_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define RRST4_High GPIO_ResetBits(RRST4_PORT,RRST4_PIN);// 输出低电平，点亮LED1
#define RRST4_Low GPIO_SetBits(RRST4_PORT,RRST4_PIN);// 输出高电平，关闭LED1
#define RCK4_PIN GPIO_Pin_8 // LED1 引脚
#define RCK4_PORT GPIOE // LED1 GPIO端口
#define RCK4_CLK RCC_APB2Periph_GPIOE // LED1 GPIO端口时钟
#define RCK4_High GPIO_ResetBits(RCK4_PORT,RCK4_PIN);// 输出低电平，点亮LED1
#define RCK4_Low GPIO_SetBits(RCK4_PORT,RCK4_PIN);// 输出高电平，关闭LED1
//设置WEN上升沿触发 WEN---C8，输入捕获，定时器3的CH3，PC8,中断，上升沿
//设置SH上升沿触发信号SH--D12，外部中断，定时器4的CH1，D12，上升沿
/*---------------------- 函数声明 ----------------------------*/
void AL422B_Init(void); //al422B初始化函数
void AL422B_wen_Init(u16 arr,u16 psc);
void AL422B_sh_Init(u16 arr,u16 psc);
#endif //__LED_H
main.c
#include "stm32f10x.h"
#include "led.h"
#include "key.h"
#include "usart.h"
#include "al422b.h"
unsigned char os1[1920];
unsigned char os2[1920];
unsigned char os3[1920];
unsigned char os4[1920];
unsigned char osall[7700];
void gpioA0A7_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOA, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 |GPIO_Pin_1 |GPIO_Pin_2 |GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
void gpioB0B7_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOB, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 |GPIO_Pin_1 |GPIO_Pin_2 |GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
void gpioC0C7_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOC, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 |GPIO_Pin_1 |GPIO_Pin_2 |GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
void gpioD0D7_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOD, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 |GPIO_Pin_1 |GPIO_Pin_2 |GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
void gpioE0E7_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd (RCC_APB2Periph_GPIOE, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 |GPIO_Pin_1 |GPIO_Pin_2 |GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOE, &GPIO_InitStructure);
}
void B3_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure; //定义结构体
RCC_APB2PeriphClockCmd ( RCC_APB2Periph_GPIOB, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_ResetBits(GPIOB,GPIO_Pin_3); //IO口输出低电平
RCC_APB2PeriphClockCmd ( RCC_APB2Periph_GPIOB, ENABLE); //初始化GPIO时钟
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
//初始化 LED1 引脚
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_ResetBits(GPIOB,GPIO_Pin_2); //IO口输出低电平
}
u8 RxBuf0[1000];
u8 SendBuf0[5000];
// DMA Rx
void USART1_RecDMA(uint8_t* buf,int len)
{
DMA_InitTypeDef DMA_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
USART_DMACmd(USART1,USART_DMAReq_Rx,ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);//开启DMA时钟
DMA_DeInit(DMA1_Channel4);//DMA1_Channel4
DMA_DeInit(DMA1_Channel5);//DMA1_Channel5
DMA_Cmd(DMA1_Channel5,DISABLE);
//由于是接收外部的数据，所以DMA目的地址是串口的数据
DMA_InitStruct.DMA_PeripheralBaseAddr = (u32)(&USART1->DR);
//内存地址是，要传输的变量的指针
DMA_InitStruct.DMA_MemoryBaseAddr = (u32)RxBuf0;
//方向从外设到内存
DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralSRC; //设置外设为数据源，外设寄存器->内存缓冲区
DMA_InitStruct.DMA_BufferSize = 5000;
//外设地址不增加
DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//内存地址增加
DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;
//外设数据单位
DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
//内存数据单位
DMA_InitStruct.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStruct.DMA_Mode = DMA_Mode_Circular;
DMA_InitStruct.DMA_Priority = DMA_Priority_High;
DMA_InitStruct.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel5,&DMA_InitStruct);
DMA_Cmd(DMA1_Channel5,ENABLE);
//ENABLE DMA RX ISR
DMA_ITConfig(DMA1_Channel5,DMA_IT_TC,ENABLE);
NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel5_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
//ENABLE DMA TX ISR
DMA_ITConfig(DMA1_Channel4,DMA_IT_TC,ENABLE);
NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel4_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
}
//发送void USART1_SendDMA(uint8_t* buf,int len)
void USART1_SendDMA()
{
DMA_InitTypeDef DMA_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);//开启DMA时钟
DMA_ITConfig(DMA1_Channel4,DMA_IT_TC,ENABLE);
DMA_Cmd(DMA1_Channel4,DISABLE);
DMA_InitStruct.DMA_PeripheralBaseAddr = (u32)(&USART1->DR);
DMA_InitStruct.DMA_MemoryBaseAddr = (u32)SendBuf0;
DMA_InitStruct.DMA_DIR = DMA_DIR_PeripheralDST; //设置外设位目标，内存缓冲区->外设寄存器
DMA_InitStruct.DMA_BufferSize = 5000;
DMA_InitStruct.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStruct.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStruct.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStruct.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;
DMA_InitStruct.DMA_Mode = DMA_Mode_Normal;
DMA_InitStruct.DMA_Priority = DMA_Priority_VeryHigh;
DMA_InitStruct.DMA_M2M = DMA_M2M_Disable;//禁止内存到内存的传输
DMA_Init(DMA1_Channel4,&DMA_InitStruct);
NVIC_InitStruct.NVIC_IRQChannel = DMA1_Channel4_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStruct.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
DMA_Cmd(DMA1_Channel4,ENABLE);
//USART_DMACmd(USART1,USART_DMAReq_Rx,ENABLE);
USART_DMACmd(USART1,USART_DMAReq_Tx,ENABLE); //使能串口1的DMA发送
}
串口1的jieshou端
//void DMA1_Channel5_IRQHandler()
//{
// if(DMA_GetITStatus(DMA1_IT_TC5))
// {
// if(using_buf0 ==0)
// {
// DMA1_Channel5->CMAR = (u32)RxBuf0;
// using_buf0 = 1;
// }
// else
// {
// DMA1_Channel5->CMAR = (u32)RxBuf1;
// using_buf0 = 0;
// }
// recv_flag = 1;
// DMA_ClearITPendingBit(DMA1_IT_TC5);
// }
//}
//串口1的发送端
void DMA1_Channel4_IRQHandler()
{
if(DMA_GetITStatus(DMA1_IT_TC4))
{
//TODO:Add code here
DMA_ClearITPendingBit(DMA1_IT_TC4);
printf("send ok...\r\n");
}
}
int main(void)
{
u32 temp=0;
int i=0;
int inputvalue;
Delay_Init();
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //开启AFIO时钟
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);//使能JTAGDisable，即禁用JTAG接口
Usart_Config();
LED_Init();
// KEY_Init();
printf("******************\r\n");
gpioA0A7_Init();
gpioB0B7_Init();
gpioC0C7_Init();
gpioD0D7_Init();
gpioE0E7_Init();
AL422B_wen_Init(0xFFFF,72-1);//12Mhz频率计算72/12=6M
AL422B_sh_Init(0xFFFF,72-1);//1us
while(1)
{
// inputvalue = GPIOC->IDR; //读取数据
// printf("inputv = %x \r\n",inputvalue);
// tm
if(TIM3_CAPTURE_STA & 0X80) //成功捕获到了一次上升沿 tim3---ch3 C8
{
temp = TIM3_CAPTURE_STA&0X3F;
temp *= 65536; //溢出时间总和
temp += TIM3_CAPTURE_VAL; //得到总的高电平时间
printf("T:%d us\r\n",temp); //打印总的高点平时间
TIM3_CAPTURE_STA = 0; //开启下一次捕获
}
if(TIM4_CAPTURE_STA & 0X80) //成功捕获到了一次上升沿 tim4 PD15
{
temp = TIM4_CAPTURE_STA&0X3F;
temp *= 65536; //溢出时间总和
temp += TIM4_CAPTURE_VAL; //得到总的高电平时间
printf("F:%d us\r\n",temp); //打印总的高点平时间
TIM4_CAPTURE_STA = 0; //开启下一次捕获
}
}
}
定时器1us定时一次
