Quang Anh Le / GPS-Tracking-Velo

GPS-Tracking-Velo

Dependencies:   MODSERIAL SDBlockDevice GPS

Forschungsstand und Theoretische Grundlage

Die Bestandteile der Hardware, die das Projekt gebraucht wird, bestehen aus drei Komponente ein Mikrocontroller Board, eine GPS Antenne und ein SIM Modul. GPS basiert auf Satelliten, die mit codierten Radiosignalen ständig ihre aktuelle Position und genaue Uhrzeit ausstrahlen. Aus den Signallaufzeiten können eine GPS Antenne ihre eigene Position und Geschwindigkeit berechnen. Diese GPS Antenne sollte die Daten der Objektposition aus Satelliten auf dem Board gespeichert werden. Diese Daten wurden noch weiter durch eine SIM Module nach GMS Turm und dann per SMS Nachrichten an Handy gesendet. Möglicherweise können diese Daten auch an Webanwendung nach der Sendung an GMS Turm geschickt werden.

https://os.mbed.com/media/uploads/QuangAnhLe/picture1.png

mbed-os-example-fat-filesystem-master/main.cpp@0:ee1ae011cba6, 2019-04-12 (annotated)

Committer:
QuangAnhLe
Date:
Fri Apr 12 13:45:29 2019 +0000
Revision:
0:ee1ae011cba6
Child:
1:2f617b92078b
este Commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
QuangAnhLe 0:ee1ae011cba6 1 #include "mbed.h"
QuangAnhLe 0:ee1ae011cba6 2 #include "FATFileSystem.h"
QuangAnhLe 0:ee1ae011cba6 3 //#include "HeapBlockDevice.h"
QuangAnhLe 0:ee1ae011cba6 4 #include "SDBlockDevice.h"
QuangAnhLe 0:ee1ae011cba6 5 #include <stdio.h>
QuangAnhLe 0:ee1ae011cba6 6 #include <errno.h>
QuangAnhLe 0:ee1ae011cba6 7
QuangAnhLe 0:ee1ae011cba6 8 //HeapBlockDevice bd(128 * 512, 512);
QuangAnhLe 0:ee1ae011cba6 9 //SDBlockDevice bd(PinName mosi, PinName miso, PinName sclk, PinName cs);
QuangAnhLe 0:ee1ae011cba6 10 SDBlockDevice bd(D11, D12, D13, D10);
QuangAnhLe 0:ee1ae011cba6 11
QuangAnhLe 0:ee1ae011cba6 12 FATFileSystem fs("fs");
QuangAnhLe 0:ee1ae011cba6 13
QuangAnhLe 0:ee1ae011cba6 14 void return_error(int ret_val){
QuangAnhLe 0:ee1ae011cba6 15 if (ret_val)
QuangAnhLe 0:ee1ae011cba6 16 printf("Failure. %d\r\n", ret_val);
QuangAnhLe 0:ee1ae011cba6 17 else
QuangAnhLe 0:ee1ae011cba6 18 printf("done.\r\n");
QuangAnhLe 0:ee1ae011cba6 19 }
QuangAnhLe 0:ee1ae011cba6 20
QuangAnhLe 0:ee1ae011cba6 21 void errno_error(void* ret_val){
QuangAnhLe 0:ee1ae011cba6 22 if (ret_val == NULL)
QuangAnhLe 0:ee1ae011cba6 23 printf(" Failure. %d \r\n", errno);
QuangAnhLe 0:ee1ae011cba6 24 else
QuangAnhLe 0:ee1ae011cba6 25 printf(" done.\r\n");
QuangAnhLe 0:ee1ae011cba6 26 }
QuangAnhLe 0:ee1ae011cba6 27
QuangAnhLe 0:ee1ae011cba6 28 int main() {
QuangAnhLe 0:ee1ae011cba6 29 int error = 0;
QuangAnhLe 0:ee1ae011cba6 30 printf("Welcome to the filesystem example.\r\n"
QuangAnhLe 0:ee1ae011cba6 31 "Formatting a FAT, RAM-backed filesystem. ");
QuangAnhLe 0:ee1ae011cba6 32 error = FATFileSystem::format(&bd);
QuangAnhLe 0:ee1ae011cba6 33 return_error(error);
QuangAnhLe 0:ee1ae011cba6 34
QuangAnhLe 0:ee1ae011cba6 35 printf("Mounting the filesystem on \"/fs\". ");
QuangAnhLe 0:ee1ae011cba6 36 error = fs.mount(&bd);
QuangAnhLe 0:ee1ae011cba6 37 return_error(error);
QuangAnhLe 0:ee1ae011cba6 38
QuangAnhLe 0:ee1ae011cba6 39 printf("Opening a new file, numbers.txt.");
QuangAnhLe 0:ee1ae011cba6 40 FILE* fd = fopen("/fs/numbers.txt", "w");
QuangAnhLe 0:ee1ae011cba6 41 errno_error(fd);
QuangAnhLe 0:ee1ae011cba6 42
QuangAnhLe 0:ee1ae011cba6 43 for (int i = 0; i < 15; i++){
QuangAnhLe 0:ee1ae011cba6 44 printf("Writing decimal numbers to a file (%d/20)\r", i);
QuangAnhLe 0:ee1ae011cba6 45 fprintf(fd, "%d\r\n", i);
QuangAnhLe 0:ee1ae011cba6 46 //fprintf(fd, "%d\r\n", i);
QuangAnhLe 0:ee1ae011cba6 47 }
QuangAnhLe 0:ee1ae011cba6 48 printf("Writing decimal numbers to a file (20/20) done.\r\n");
QuangAnhLe 0:ee1ae011cba6 49
QuangAnhLe 0:ee1ae011cba6 50 printf("Closing file.");
QuangAnhLe 0:ee1ae011cba6 51 fclose(fd);
QuangAnhLe 0:ee1ae011cba6 52 printf(" done.\r\n");
QuangAnhLe 0:ee1ae011cba6 53
QuangAnhLe 0:ee1ae011cba6 54 printf("Re-opening file read-only.");
QuangAnhLe 0:ee1ae011cba6 55 fd = fopen("/fs/numbers.txt", "r");
QuangAnhLe 0:ee1ae011cba6 56 errno_error(fd);
QuangAnhLe 0:ee1ae011cba6 57
QuangAnhLe 0:ee1ae011cba6 58 printf("Dumping file to screen.\r\n");
QuangAnhLe 0:ee1ae011cba6 59 char buff[16] = {0};
QuangAnhLe 0:ee1ae011cba6 60 while (!feof(fd)){
QuangAnhLe 0:ee1ae011cba6 61 int size = fread(&buff[0], 1, 15, fd);
QuangAnhLe 0:ee1ae011cba6 62 fwrite(&buff[0], 1, size, stdout);
QuangAnhLe 0:ee1ae011cba6 63 }
QuangAnhLe 0:ee1ae011cba6 64 printf("EOF.\r\n");
QuangAnhLe 0:ee1ae011cba6 65
QuangAnhLe 0:ee1ae011cba6 66 printf("Closing file.");
QuangAnhLe 0:ee1ae011cba6 67 fclose(fd);
QuangAnhLe 0:ee1ae011cba6 68 printf(" done.\r\n");
QuangAnhLe 0:ee1ae011cba6 69
QuangAnhLe 0:ee1ae011cba6 70 printf("Opening root directory.");
QuangAnhLe 0:ee1ae011cba6 71 DIR* dir = opendir("/fs/");
QuangAnhLe 0:ee1ae011cba6 72 errno_error(fd);
QuangAnhLe 0:ee1ae011cba6 73
QuangAnhLe 0:ee1ae011cba6 74 struct dirent* de;
QuangAnhLe 0:ee1ae011cba6 75 printf("Printing all filenames:\r\n");
QuangAnhLe 0:ee1ae011cba6 76 while((de = readdir(dir)) != NULL){
QuangAnhLe 0:ee1ae011cba6 77 printf(" %s\r\n", &(de->d_name)[0]);
QuangAnhLe 0:ee1ae011cba6 78 }
QuangAnhLe 0:ee1ae011cba6 79
QuangAnhLe 0:ee1ae011cba6 80 printf("Closing root directory. ");
QuangAnhLe 0:ee1ae011cba6 81 error = closedir(dir);
QuangAnhLe 0:ee1ae011cba6 82 return_error(error);
QuangAnhLe 0:ee1ae011cba6 83 printf("Filesystem Demo complete.\r\n");
QuangAnhLe 0:ee1ae011cba6 84
QuangAnhLe 0:ee1ae011cba6 85 while (true) {}
QuangAnhLe 0:ee1ae011cba6 86 }
QuangAnhLe 0:ee1ae011cba6 87