Abdelmalek BELLOULA
Exemple Test GPS Logger
Revision 0:7c9fada60131, committed 2018-04-02
- Comitter:
- belloula
- Date:
- Mon Apr 02 09:31:50 2018 +0000
- Commit message:
- GPS Logger exemple
Changed in this revision
diff -r 000000000000 -r 7c9fada60131 USBHost.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBHost.lib Mon Apr 02 09:31:50 2018 +0000 @@ -0,0 +1,1 @@ +https://mbed.org/users/mbed_official/code/USBHost/#37c948cf0dbf
diff -r 000000000000 -r 7c9fada60131 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Apr 02 09:31:50 2018 +0000
@@ -0,0 +1,108 @@
+#include "mbed.h"
+#include "USBHostMSD.h"
+//#include "gps.h" // gps def HEADER
+
+// Definitions of states for gpd USART receiver state machine (for receiving packets)
+ #define GPS_STATE_WAIT 1
+ #define GPS_STATE_DATA 2
+
+Serial pc(USBTX, USBRX); // PC SERIAL OVER USB PORT ON MBED
+Serial gps(p13, p14); // GPS SERIAL OVER UART PINS 13 & 14
+DigitalOut gps_activity(LED4);
+
+USBHostMSD msd("usb");
+FILE *fp;
+uint8_t gps_State = GPS_STATE_WAIT;
+
+unsigned char gps_data[200];
+int data_gps_lenth;
+
+unsigned char c;
+char Exit = 0;
+int gps_flag =0;
+
+
+void attgps() {
+
+ if (gps.readable()) {
+
+ //*gps_activity =!gps_activity;
+ switch ( gps_State ) { // In this state, the USART is waiting to see the sequence of bytes that signals a new incoming packet from gps.
+ static unsigned char data_counter=0;
+ case GPS_STATE_WAIT:
+ c = gps.getc();
+ if ( data_counter == 0 ) { // Waiting on '$' character
+ if ( c == '$' ) {
+ gps_data[data_counter]= c;
+ data_counter++;
+ } else {
+ data_counter = 0;
+ }
+ } else if ( data_counter == 1 ) { // Waiting on 'G' character
+ if (c == 'G' ) {
+ gps_data[data_counter]= c;
+ data_counter++;
+ } else {
+ data_counter = 0;
+ }
+ } else if ( data_counter == 2 ) { // Waiting on 'P' character
+ if ( c == 'P' ) {
+ // The full '$GP' sequence was received. Reset data_counter (it will be used again
+ // later) and transition to the next state.
+
+ gps_data[data_counter] = c;
+ gps_State = GPS_STATE_DATA;
+ data_counter++;
+
+ } else {
+ data_counter = 0;
+ }
+ }
+ break;
+
+ // USART in the DATA state. In this state, the USART expects to receive data.
+ case GPS_STATE_DATA:
+ c = gps.getc();
+ if (c != (0x0D)) {
+ gps_data[data_counter] = c;
+ data_counter++;
+ break;
+ }
+ data_gps_lenth = data_counter;
+ data_counter=0;
+ gps_State = GPS_STATE_WAIT;
+ gps_flag = 1;
+ break;
+
+ }
+ }
+}
+void comandExit () {
+ Exit = pc.getc();
+ //pc.printf("Exit");
+}
+
+int main() {
+ FILE *fp = fopen("/fs/Enregistrement.txt", "w");
+ if (fp == NULL) {
+ error("Could not open file for write MSC\n");
+ }
+ pc.baud(38400);
+ gps.baud(38400);
+ pc.attach(comandExit);
+ gps.attach(attgps);
+
+ while (Exit!='$') {
+ if (gps_flag == 1) {
+ for (int i=0; i<data_gps_lenth+1; i++) {
+ pc.putc(gps_data[i]);
+
+ }
+ pc.printf("\r\n");
+ gps_flag = 0;
+ }
+ gps_activity =!gps_activity;
+
+ }
+}
+
diff -r 000000000000 -r 7c9fada60131 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Mon Apr 02 09:31:50 2018 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/f37f3b9c9f0b \ No newline at end of file