274 lines
7.2 KiB
C
274 lines
7.2 KiB
C
// #include "stm32f103xb.h"
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//网络设备驱动
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#include "esp8266.h"
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//硬件驱动
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#include "main.h"
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#include "usart.h"
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//C库
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#include <string.h>
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#include <stdio.h>
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#include "cmsis_os.h"
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#include "cmsis_os2.h"
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// #define ESP8266_WIFI_INFO "AT+CWJAP=\"Timo\",\"11223344\"\r\n"
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#define ESP8266_ONENET_INFO "AT+CIPSTART=\"TCP\",\"183.230.40.96\",1883\r\n"
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unsigned char esp8266_buf[128];
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unsigned short esp8266_cnt = 0, esp8266_cntPre = 0;
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void Usart_SendString(UART_HandleTypeDef* huart, unsigned char* str, unsigned short len)
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{
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unsigned short count = 0;
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HAL_UART_Transmit(huart, (uint8_t*)str, len, 0xffff);
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while (HAL_UART_GetState(huart) == HAL_UART_STATE_BUSY_TX);
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}
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//==========================================================
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// 函数名称: ESP8266_Clear
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//
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// 函数功能: 清空缓存
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//
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// 入口参数: 无
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//
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// 返回参数: 无
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//
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// 说明:
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//==========================================================
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void ESP8266_Clear(void)
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{
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memset(esp8266_buf, 0, sizeof(esp8266_buf));
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esp8266_cnt = 0;
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}
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//==========================================================
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// 函数名称: ESP8266_WaitRecive
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//
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// 函数功能: 等待接收完成
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//
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// 入口参数: 无
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//
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// 返回参数: REV_OK-接收完成 REV_WAIT-接收超时未完成
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//
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// 说明: 循环调用检测是否接收完成
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//==========================================================
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_Bool ESP8266_WaitRecive(void)
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{
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if (esp8266_cnt == 0) //如果接收计数为0 则说明没有处于接收数据中,所以直接跳出,结束函数
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return REV_WAIT;
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if (esp8266_cnt == esp8266_cntPre) //如果上一次的值和这次相同,则说明接收完毕
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{
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esp8266_cnt = 0; //清0接收计数
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return REV_OK; //返回接收完成标志
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}
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esp8266_cntPre = esp8266_cnt; //置为相同
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return REV_WAIT; //返回接收未完成标志
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}
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//==========================================================
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// 函数名称: ESP8266_SendCmd
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//
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// 函数功能: 发送命令
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//
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// 入口参数: cmd:命令
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// res:需要检查的返回指令
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//
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// 返回参数: 0-成功 1-失败
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//
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// 说明:
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//==========================================================
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_Bool ESP8266_SendCmd(char* cmd, char* res)
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{
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unsigned char timeOut = 200;
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Usart_SendString(&huart2, (unsigned char*)cmd, strlen((const char*)cmd));
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while (timeOut--)
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{
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if (ESP8266_WaitRecive() == REV_OK) //如果收到数据
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{
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if (strstr((const char*)esp8266_buf, res) != NULL) //如果检索到关键词
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{
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ESP8266_Clear(); //清空缓存
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return 0;
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}
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}
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HAL_Delay(10);
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}
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return 1;
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}
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//==========================================================
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// 函数名称: ESP8266_SendData
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//
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// 函数功能: 发送数据
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//
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// 入口参数: data:数据
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// len:长度
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//
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// 返回参数: 无
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//
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// 说明:
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//==========================================================
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void ESP8266_SendData(unsigned char* data, unsigned short len)
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{
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char cmdBuf[32];
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ESP8266_Clear(); //清空接收缓存
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sprintf(cmdBuf, "AT+CIPSEND=%d\r\n", len); //发送命令
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if (!ESP8266_SendCmd(cmdBuf, ">")) //收到‘>’时可以发送数据
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{
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Usart_SendString(&huart2, data, len); //发送设备连接请求数据
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}
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}
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//==========================================================
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// 函数名称: ESP8266_GetIPD
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//
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// 函数功能: 获取平台返回的数据
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//
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// 入口参数: 等待的时间(乘以10ms)
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//
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// 返回参数: 平台返回的原始数据
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//
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// 说明: 不同网络设备返回的格式不同,需要去调试
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// 如ESP8266的返回格式为 "+IPD,x:yyy" x代表数据长度,yyy是数据内容
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//==========================================================
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unsigned char* ESP8266_GetIPD(unsigned short timeOut)
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{
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char* ptrIPD = NULL;
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do
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{
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if (ESP8266_WaitRecive() == REV_OK) //如果接收完成
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{
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ptrIPD = strstr((char*)esp8266_buf, "IPD,"); //搜索“IPD”头
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if (ptrIPD == NULL) //如果没找到,可能是IPD头的延迟,还是需要等待一会,但不会超过设定的时间
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{
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//printf("\"IPD\" not found\r\n");
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}
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else
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{
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ptrIPD = strchr(ptrIPD, ':'); //找到':'
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if (ptrIPD != NULL)
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{
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ptrIPD++;
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return (unsigned char*)(ptrIPD);
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}
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else
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return NULL;
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}
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}
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HAL_Delay(5);
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}
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while (timeOut--);
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return NULL; //超时还未找到,返回空指针
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}
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unsigned char* ESP8266_GetIPD_soft(unsigned short timeOut)
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{
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char* ptrIPD = NULL;
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do
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{
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if (ESP8266_WaitRecive() == REV_OK) //如果接收完成
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{
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ptrIPD = strstr((char*)esp8266_buf, "IPD,"); //搜索“IPD”头
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if (ptrIPD == NULL) //如果没找到,可能是IPD头的延迟,还是需要等待一会,但不会超过设定的时间
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{
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//printf("\"IPD\" not found\r\n");
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}
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else
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{
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ptrIPD = strchr(ptrIPD, ':'); //找到':'
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if (ptrIPD != NULL)
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{
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ptrIPD++;
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return (unsigned char*)(ptrIPD);
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}
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else
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return NULL;
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}
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}
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osDelay(5);
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}
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while (timeOut--);
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return NULL; //超时还未找到,返回空指针
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}
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void ESP8266_Init(const int isSmartConfig)
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{
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ESP8266_Clear();
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// reset ESP8266
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while (ESP8266_SendCmd("AT+RST\r\n", "ready")) HAL_Delay(500);
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// make sure ESP is up
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while (ESP8266_SendCmd("AT\r\n", "OK")) HAL_Delay(500);
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// set auto connect to AP
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while (ESP8266_SendCmd("AT+CWAUTOCONN=1\r\n", "OK")) HAL_Delay(500);
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// set CWMODE
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while (ESP8266_SendCmd("AT+CWMODE=1\r\n", "OK")) HAL_Delay(500);
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if (isSmartConfig)
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{
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ESP8266_SmartConfig();
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}
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else
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{
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// connect to built-in AP
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// while (ESP8266_SendCmd(ESP8266_WIFI_INFO, "GOT IP")) HAL_Delay(1000);
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// wait until WiFi is up
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while (ESP8266_SendCmd("AT\r\n", "GOT IP")) HAL_Delay(1000);
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}
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// connect to OneNet via TCP
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while (ESP8266_SendCmd(ESP8266_ONENET_INFO, "CONNECT")) HAL_Delay(1000);
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}
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void ESP8266_SmartConfig(void)
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{
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// start smart config
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while (ESP8266_SendCmd("AT+CWSTARTSMART=1\r\n", "OK")) HAL_Delay(500);
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// wait for smart config to finish
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while (ESP8266_SendCmd("AT\r\n", "smartconfig connected wifi")) HAL_Delay(500);
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// stop smart config
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while (ESP8266_SendCmd("AT+CWSTOPSMART\r\n", "OK")) HAL_Delay(500);
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}
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//==========================================================
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// 函数名称: ESP8266_IRQHandler
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//
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// 函数功能: 串口2收发中断
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//
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// 入口参数: 无
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//
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// 返回参数: 无
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//
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// 说明:
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//==========================================================
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//void ESP8266_IRQHandler(void)
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//{
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// if(esp8266_cnt >= sizeof(esp8266_buf))
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// {
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// esp8266_cnt = 0; //防止串口被刷爆
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// }
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// esp8266_buf[esp8266_cnt++] = USART1->DR;
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//}
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