ld3320与stm32串口通信
时间: 2023-09-13 10:14:05 浏览: 87
LD3320是一个语音识别模块,可以通过串口与STM32进行通信。下面是基本的串口通信代码示例:
```c
#include "stm32f10x.h"
/* 定义串口发送函数 */
void USART_SendString(USART_TypeDef* USARTx, char* s)
{
while(*s)
{
while(USART_GetFlagStatus(USARTx, USART_FLAG_TC) == RESET);
USART_SendData(USARTx, *s++);
}
}
int main(void)
{
/* 初始化串口 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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_Mode_Rx;
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
while(1)
{
/* 发送命令给LD3320,例如"LD3320,START" */
char command[] = "LD3320,START";
USART_SendString(USART1, command);
/* 接收LD3320返回的数据 */
char receiveBuffer[100];
int i = 0;
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) != RESET)
{
receiveBuffer[i] = USART_ReceiveData(USART1);
i++;
}
/* 处理接收到的数据 */
// ...
}
}
```
在上面的示例中,我们使用USART1作为串口,并将PA9和PA10引脚分别连接到LD3320的TX和RX引脚。在主循环中,我们发送命令给LD3320,然后等待LD3320返回数据,并将接收到的数据存储在receiveBuffer数组中。接收到的数据可以进行相应的处理。
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