用C语言写一个基于M3内核的读取tsic506数据的中断函数,中断条件是定时器计时1秒结束,并将数据用串口发送出来
时间: 2023-11-28 17:49:20 浏览: 53
下面是一个基于M3内核的读取tsic506数据的中断函数,需要用到定时器和串口模块:
```c
#include <stm32f10x.h>
#define UART_TX_PIN GPIO_Pin_9
#define UART_RX_PIN GPIO_Pin_10
volatile uint16_t tsic_data = 0;
volatile uint8_t tsic_flag = 0;
void TIM2_IRQHandler(void)
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
tsic_data = read_tsic_data(); // 读取tsic数据
tsic_flag = 1; // 设置数据标志位
}
}
void USART1_IRQHandler(void)
{
if (USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
{
USART_ClearITPendingBit(USART1, USART_IT_TXE);
USART_SendData(USART1, (uint16_t)tsic_data); // 发送tsic数据
}
}
void init_timer2(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
TIM_TimeBaseStructure.TIM_Period = 1000 - 1; // 定时器周期为1秒
TIM_TimeBaseStructure.TIM_Prescaler = 7200 - 1; // 定时器预分频系数为7200
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM2, ENABLE);
}
void init_usart1(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);
// 配置USART1的TX引脚为推挽输出
GPIO_InitStructure.GPIO_Pin = UART_TX_PIN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// 配置USART1的RX引脚为浮空输入
GPIO_InitStructure.GPIO_Pin = UART_RX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 115200;
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_Tx;
USART_Init(USART1, &USART_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);
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
USART_Cmd(USART1, ENABLE);
}
int main(void)
{
init_timer2();
init_usart1();
while (1)
{
if (tsic_flag)
{
tsic_flag = 0;
}
}
return 0;
}
```
在该代码中,定时器2的中断处理函数`TIM2_IRQHandler`会在定时器计时1秒结束时被调用,其中调用了`read_tsic_data()`函数读取tsic数据,并设置了数据标志位。串口模块的中断处理函数`USART1_IRQHandler`会在串口发送缓冲区为空时被调用,其中调用了`USART_SendData()`函数将tsic数据发送出去。在主函数中,通过轮询数据标志位的方式,不断检测是否有新的tsic数据需要发送。需要注意的是,该代码中没有实现`read_tsic_data()`函数,需要根据具体情况自行实现。
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