ArduinoJson: 将传感器数据以JSON格式存入SD卡中

#ifndef __JSON2SD_H #define __JSON2SD_H #include <ArduinoJson.h> #include <SD.h> const uint8_t sensorNum=5, shtNum=2, sampleNumMax=100; // sensorData数量, shtData数量, 最大采样数 void Json2SD(char * fileName, char * userAffiliate, char * userID, uint16_t sensor[][sampleNumMax], float sht[][sampleNumMax], uint8_t sampleNum_Actual, long SDTimes) { char deviceInfo[80]; char deviceName[] = "deviceName001", deviceSN[] = "SN00001"; sprintf(deviceInfo, "{\"DeviceInfo\":{\"DeviceName\":\"%s\",\"DeviceSN\":\"%s\"},", deviceName, deviceSN); char userInfo[80]; sprintf(userInfo,"\"UserInfo\":{\"UserAffiliate\":\"%s\",\"UserID\":\"%s\"},", userAffiliate, userID); char SampleInfo[15]; sprintf(SampleInfo, "\"SampleInfo\":["); File dataFile = SD.open(fileName, FILE_WRITE); if(dataFile) { dataFile.print(deviceInfo); // 1>> 设备信息 dataFile.print(userInfo); // 2>> 用户信息 dataFile.print(SampleInfo); // 3>> 采样信息 // 循环写入, 传感器数据 StaticJsonDocument<1024> SJD_sampleData; for (uint8_t col=0; col<sampleNum_Actual; col++) { // 创建一个JSON对象，用于存储当前采样数据 SJD_sampleData["SampleNum"] = col; // SampleNum: 1 << 采样次数 << 编辑输入 SJD_sampleData["SampleTime"] = "2023-01-01"; // SampleTime: 1 << 考虑后期加入 JsonArray JA_sensorData = SJD_sampleData.createNestedArray("sensorData"); for (uint8_t j=0; j<sensorNum; j++) { // JsonArray: sensorData, A口传感器数据 JA_sensorData.add(sensor[j][col]); } JsonArray JA_shtData = SJD_sampleData.createNestedArray("shtData"); for (uint8_t k=0; k<shtNum; k++) { // JsonArray: shtData, SHT4x温湿度传感器数据 JA_shtData.add(sht[k][col]); } serializeJson(SJD_sampleData, dataFile); // 将1次采样的数据存入SD卡 SJD_sampleData.clear(); if(col<sampleNum_Actual-1) dataFile.print(","); // 不同采样次数的分隔符 } dataFile.print("]}"); // JSON数据的结尾 dataFile.close(); Serial.print(F("Json2SD OK!")); Serial.print(F(" Times: ")); Serial.println(SDTimes); } else { Serial.println(F("Json2SD Error!")); } } #endif