84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
#include "Serial.h"
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#include "Delay.h" // Get_Time_ms 在这里，所以我们包含它
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#include <string.h>
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#define RX_BUFFER_SIZE 1024 // ← 增大到1024字节，支持完整HTTP响应
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char RxBuffer[RX_BUFFER_SIZE];
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uint16_t RxCounter = 0;
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// 初始化ESP8266所用的串口 (根据连接图.md: USART1 PA9/PA10)
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void Serial_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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USART_InitTypeDef USART_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);
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// PA9: USART1_TX
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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// PA10: USART1_RX
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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USART_InitStructure.USART_BaudRate = 115200;
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USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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USART_InitStructure.USART_StopBits = USART_StopBits_1;
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USART_InitStructure.USART_Parity = USART_Parity_No;
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USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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USART_Init(USART1, &USART_InitStructure);
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USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
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NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; // 优先级低于K210
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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USART_Cmd(USART1, ENABLE);
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}
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// 发送字符串
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void Serial_SendString(const char* String)
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{
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for (uint32_t i = 0; String[i] != '\0'; i++)
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{
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while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
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USART_SendData(USART1, String[i]);
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}
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}
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// 获取接收缓冲区
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char* Serial_GetRxBuffer(void)
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{
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return RxBuffer;
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}
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// 清空接收缓冲区
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void Serial_ClearRxBuffer(void)
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{
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memset(RxBuffer, 0, RX_BUFFER_SIZE);
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RxCounter = 0;
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}
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// USART1中断服务函数 (ESP8266)
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void USART1_IRQHandler(void)
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{
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if (USART_GetITStatus(USART1, USART_IT_RXNE) == SET)
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{
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uint8_t RxData = USART_ReceiveData(USART1);
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if (RxCounter < RX_BUFFER_SIZE - 1)
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{
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RxBuffer[RxCounter++] = RxData;
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}
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USART_ClearITPendingBit(USART1, USART_IT_RXNE);
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}
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}
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