generated from Template/H563ZI-HAL-CMake-Template
194 lines
4.1 KiB
C
194 lines
4.1 KiB
C
#include "gps.h"
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/**
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提示: 虽然 BLE 以及 GPS都是DMA+ UART接收，但是它们都有所不同
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BLE --- DMA + IDLE 中断 循环 DMA + 空闲中断触发处理 UART IDLE
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GPS --- DMA +固定长度 + TC中断 设置固定长度 DMA DMA传输完成中断
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**/
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//外部引入
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extern UART_HandleTypeDef huart2;
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extern DMA_HandleTypeDef handle_GPDMA1_Channel3;
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//全局数据变量定义
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uint8_t GPS_DMA_RX_BUF[GPS_DMA_RX_BUF_LEN]; //用于DMA接收缓冲
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_GPSData GPS;
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// TEST 是进行逻辑测试时候的代码，else之后的是加入到Thread X的实际控制代码
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#ifdef TEST
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//void GPS_DMA_Start(void)
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//{
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// HAL_UART_Receive_DMA(&huart2,GPS_DMA_RX_BUF,GPS_DMA_RX_BUF_LEN);
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// __HAL_DMA_ENABLE_IT(huart2.hdmarx,DMA_IT_HT); //半传输中断
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// __HAL_DMA_ENABLE_IT(huart2.hdmarx,DMA_IT_TC); //全传输中断
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//}
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void GPS_Init(void)
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{
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HAL_UARTEx_ReceiveToIdle_DMA(&huart2, GPS_DMA_RX_BUF, GPS_DMA_RX_BUF_LEN);
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__HAL_DMA_DISABLE_IT(&handle_GPDMA1_Channel3, DMA_IT_HT); // 禁用半传输
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}
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void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart, uint16_t Size)
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{
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if(huart->Instance == USART2)
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{
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// 根据 Size 拷贝接收到的数据
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memcpy(GPS.GPS_Buffer,GPS_DMA_RX_BUF,Size);
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GPS.GPS_Buffer[Size] = '\0';
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GPS.isGetData = 1; //数据接收标志位置为1
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//重新开启接收
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HAL_UARTEx_ReceiveToIdle_DMA(&huart2,GPS_DMA_RX_BUF,GPS_DMA_RX_BUF_LEN);
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__HAL_DMA_DISABLE_IT(&handle_GPDMA1_Channel3,DMA_IT_HT);
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}
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}
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// 串口数据清除
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void GPS_Data_CLR(void)
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{
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memset(GPS_DMA_RX_BUF,0,GPS_DMA_RX_BUF_LEN);
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}
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#ifdef parse
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// GPS数据解析
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void parseGpsBuffer()
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{
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char *subString;
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char *subStringNext;
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char i = 0;
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if(GPS.isGetData)
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{
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GPS.isGetData = 0; // 把标志位置为1
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char usefullBuffer[2] = {0};
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for(i = 0; i <= 6; i++)
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{
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if(i == 0)
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{
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subString = strstr(GPS.GPS_Buffer,",");
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if(!subString)return;
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}
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else
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{
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subString++;
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subStringNext = strstr(subString,",");
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if(!subStringNext)return;
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switch(i)
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{
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case 1:
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memcpy(GPS.UTCTime,subString,subStringNext - subString);
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break;
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case 2:
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memcpy(usefullBuffer,subString,subStringNext - subString);
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break;
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case 3:
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memcpy(GPS.latitude,subString,subStringNext - subString);
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break;
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case 4:
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memcpy(GPS.N_S,subString,subStringNext - subString);
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break;
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case 5:
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memcpy(GPS.longitude,subString,subStringNext - subString);
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break;
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case 6:
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memcpy(GPS.E_W,subString,subStringNext - subString);
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break;
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default:break;
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}
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subString = subStringNext;
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}
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}
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GPS.isParseData = 1;
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GPS.isUsefull = (usefullBuffer[0] == 'A') ? 1 : 0;
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}
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}
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#else // 这里是对于改进后的parse 解析 两个都需要进行测试
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void parseGpsBuffer()
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{
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char *fields[7];
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char *token;
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int fieldIndex = 0;
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if (GPS.isGetData)
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{
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GPS.isGetData = 0; // 把标志位置为0
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token = strtok(GPS.GPS_Buffer, ",");
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while (token != NULL && fieldIndex < 7)
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{
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fields[fieldIndex++] = token;
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token = strtok(NULL, ",");
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}
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if (fieldIndex == 7)
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{
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memcpy(GPS.UTCTime, fields[1], sizeof(GPS.UTCTime) - 1);
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GPS.UTCTime[sizeof(GPS.UTCTime) - 1] = '\0';
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memcpy(GPS.latitude, fields[3], sizeof(GPS.latitude) - 1);
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GPS.latitude[sizeof(GPS.latitude) - 1] = '\0';
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memcpy(GPS.N_S, fields[4], sizeof(GPS.N_S) - 1);
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GPS.N_S[sizeof(GPS.N_S) - 1] = '\0';
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memcpy(GPS.longitude, fields[5], sizeof(GPS.longitude) - 1);
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GPS.longitude[sizeof(GPS.longitude) - 1] = '\0';
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memcpy(GPS.E_W, fields[6], sizeof(GPS.E_W) - 1);
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GPS.E_W[sizeof(GPS.E_W) - 1] = '\0';
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GPS.isParseData = 1;
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GPS.isUsefull = (fields[2][0] == 'A') ? 1 : 0;
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}
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}
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}
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/*
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改进点总结
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使用 strtok 进行分隔：
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更加简洁地分割字符串。
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数组存储字段：
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使用数组存储每个字段的指针，减少重复代码。
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边界检查：
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确保字段数量足够，避免数组越界。
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字符串截断：
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确保复制的字符串以 null 结尾，避免潜在的字符串处理问题。
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*/
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#endif
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// 转换角度
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double Convert_to_degrees(char *data)
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{
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double temp = atof(data);
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int deg = (int)(temp / 100);
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double min = temp - deg * 100;
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return deg + (min / 60.0);
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}
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#else // 这部分是留给后续的 Thread X
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#endif
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