使用ADS环境下的STM32驱动ir2104代码
时间: 2024-09-25 19:14:33 浏览: 45
在ADS (Atmel Software Development Studio) 环境下,编写STM32驱动IR2104红外接收模块的代码通常涉及以下几个步骤:
1. **包含头文件**:
首先,需要包含STM32的GPIO、USART以及IR2104专用库的头文件。例如:
```c
#include "stm32f4xx.h"
#include "ir2104.h"
```
2. **初始化硬件资源**:
初始化GPIO作为输入(连接到IR2104的接收端口),并设置USART作为通信通道:
```c
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
// Initialize GPIO for IR input
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; // IR2104 pin on PA0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Initialize USART for communication with IR2104
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART1, ENABLE);
USART_InitStructure.USART_BaudRate = YOUR_BAUD_RATE;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
```
3. **读取数据函数**:
创建一个用于读取红外信号并解码的函数,利用USART中断处理程序实现数据接收:
```c
void IR2104_IRQHandler(void) {
if (USART_GetFlagStatus(USART1, USART_FLAG_RXNE)) {
uint8_t data = USART_ReceiveData(USART1);
processReceivedData(data);
}
}
void processReceivedData(uint8_t data) {
// Handle the received data from IR2104 here
}
```
4. **配置中断和开启中断**:
注册中断服务函数,并启用相应的中断:
```c
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
EnableIRQ(USART1_IRQn);
```
5. **主循环和定时器**:
在主循环中监听中断,如果有新数据,则处理它。可能还需要添加定时器管理发送请求。
记得将`YOUR_BAUD_RATE`替换为你实际使用的波特率。此外,上述代码是一个简化版本,实际应用可能还需考虑错误处理和状态机管理。
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