Linkit ONE开发板实验05-SD卡存储GPS数据

来源：互联网发布：值乎app 编辑：程序博客网时间：2024/06/05 23:49

由于昨天休息的太晚了，导致今天浑身无力。今天就不做新的实验了，只是对昨天的SD卡操作复习下。

下面的代码用户将GPS的原始数据存入MicroSD卡中的gpsdata.txt文件中。

#include <LGPS.h>#include <LStorage.h>#include <LSD.h>#define LED_GPIO_PIN  13void setup() {  // initialize LED pin as an output.  pinMode(LED_GPIO_PIN, OUTPUT);  //Setup Serial Port.  Serial.begin(9600);  Serial.println("Linkit ONE Board"); //print with line change.  gpsPowerOn();  initSd();}void ledOn() {  digitalWrite(LED_GPIO_PIN, HIGH);   // turn the LED on (HIGH is the voltage level)}void ledOff() {  digitalWrite(LED_GPIO_PIN, LOW);    // turn the LED off by making the voltage LOW}void gpsPowerOn() {  LGPS.powerOn();}void gpsPowerOff() {  LGPS.powerOff();}void gpsGetData() {  gpsSentenceInfoStruct info;  LGPS.getData(&info);  //Serial.print((char*)info.GPGGA);  //Serial.print((char*)info.GPGSA);  //Serial.print((char*)info.GPRMC);  //Serial.print((char*)info.GPVTG);  //Serial.print((char*)info.GPGSV);  //Serial.print((char*)info.GLGSV);  //Serial.print((char*)info.BDGSV);  //Serial.print((char*)info.BDGSA);  //Serial.println(" ");  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GPGGA), strlen((char*)info.GPGGA));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GPGSA), strlen((char*)info.GPGSA));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GPRMC), strlen((char*)info.GPRMC));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GPVTG), strlen((char*)info.GPVTG));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GPGSV), strlen((char*)info.GPGSV));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.GLGSV), strlen((char*)info.GLGSV));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.BDGSV), strlen((char*)info.BDGSV));  writeBuf("gpsdata.txt", (uint8_t*)((char*)info.BDGSA), strlen((char*)info.BDGSA));}void initSd() {  LSD.begin();}boolean setupDir(char* pathStr) {  if (false == LSD.exists(pathStr)) {    if (false == LSD.mkdir(pathStr)) {      Serial.print("Create directory ");      Serial.print(pathStr);      Serial.println("Failed");      return false;    }    return true;  }  return true;}int writeBuf(char* filenameStr, uint8_t* buf, size_t len) {  LFile f = LSD.open(filenameStr, FILE_WRITE);  if (false == f) {    Serial.print("Open file ");    Serial.print(filenameStr);    Serial.println("Failed");    return -1;  }  if (true == f.isDirectory()) {    Serial.print("File ");    Serial.print(f.name());    Serial.println(" is Directory");    return -1;  }  if (0 < f.size()) {    f.seek(f.size());  }  int i = 0;  for (i = 0; i < len; i++) {    f.write((uint8_t)buf[i]);  }  Serial.print("File size:");  Serial.println(f.size());    f.flush();  f.close();  return len;  }void loop() {  gpsGetData();  delay(200);  ledOn();  delay(800);  ledOff();}

上面的代码比较容易看懂，在loop函数中调用gpsGetData()来获取当前的GPS位置信息。并在gpsGetData()函数中调用writeBuf()函数来讲GPS数据写入到gpsdata.txt这个文件中。

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