Rishin Amin
LoRa send is causing hang-up when a gps fix is acquired
Dependencies: mbed LoRaWAN-lib_publishing_testing_UART_bug SingleFrequencyLora
Fork of
simple-demo-76_revised_20171113_copy
by 
Rishin Amin
Diff: app/main.cpp
- Revision:
- 14:539ef77197e0
- Parent:
- 12:dc90bd3ac7d8
diff -r 9f1dd1497e9a -r 539ef77197e0 app/main.cpp
--- a/app/main.cpp Mon Dec 04 14:48:01 2017 +0000
+++ b/app/main.cpp Mon Dec 04 21:25:19 2017 +0000
@@ -34,10 +34,10 @@
// #ifdef DEBUGGER
-// RawSerial pc(PC_TX, PC_RX); // USART2
+RawSerial pc(USBTX, USBRX); // USART2
// #endif
-Serial gps(GPS_TX, GPS_RX); // USART1
+RawSerial gps(GPS_TX, GPS_RX); // USART1
// DigitalOut Reset(RESET_PIN);
// DigitalOut Force_on(FORCE_ON_PIN);
@@ -48,111 +48,143 @@
GPS_data GPS_parse;
volatile int Char_index = 0; // index for char array
char Rx_data[MAX_NMEA_LENGTH] = "0"; // char array to store received bytes
-char tx_line[82];
// uint8_t valid = 0;
-volatile uint8_t GPS_data_ready = 0;
+//volatile uint8_t GPS_data_ready = 0;
volatile uint8_t sending = 0;
-volatile bool keepOut = false;
+volatile bool timerset = false;
-uint8_t miss_count =0;
+volatile bool firstfix = false;
+
+volatile bool keepOut = false;
Ticker LoRaSend_timer;
-void flushSerialBuffer(void) { char char1 = 0; while (gps.readable()) { char1 = gps.getc(); } return; }
+//void flushSerialBuffer(void) { char char1 = 0; while (gps.readable()) { char1 = gps.getc(); } return; }
+
+void LoRaSend(){
+ //GPS_status = !GPS_status;
+ //if (keepOut)
+ // return;
+ __disable_irq();//NVIC_DisableIRQ(USART1_IRQn);
+ //if(GPS_data_ready == 1){
+ // pc.putc('1');
+ sending = 1;
+ // pc.putc('3');
+ char AppDatas[APPDATA_SIZE];
+ // pc.putc('4');
+ strcpy(AppDatas, GPS_parse.Latitude);
+ // pc.putc('5');
+ strcat(AppDatas, ",");
+ // pc.putc('6');
+ strcat(AppDatas, GPS_parse.Longitude);
+ // pc.putc('7');
+ strcat(AppDatas, ",");
+ // pc.putc('8');
+ strcat(AppDatas, GPS_parse.Course_Over_Ground);
+ // pc.putc('9');
+ strcat(AppDatas, ",");
+ // pc.putc('a');
+ strcat(AppDatas, GPS_parse.Speed_Over_Ground);
+ // pc.putc('b');
+ strcat(AppDatas, ",");
+ //strcat(AppDatas, GPS_parse.Date);
+ //strcat(AppDatas, ",");
+ // pc.putc('c');
+ strcat(AppDatas, GPS_parse.UTC_Time);
+ // pc.putc('d');
+ strcat(AppDatas, ",");
+ // pc.putc('e');
+ strcat(AppDatas, GPS_parse.Valid);
+ // pc.putc('f');
+ // McpsReq_t mcpsReq;
+ // pc.putc('g');
+ // uint8_t AppPort = 3;
+ // pc.putc('h');
+ // mcpsReq.Type = MCPS_UNCONFIRMED;
+ // pc.putc('i');
+ // mcpsReq.Req.Unconfirmed.fPort = AppPort;
+ // pc.putc('j');
+ // mcpsReq.Req.Unconfirmed.fBuffer = AppDatas;
+ // pc.putc('k');
+ // mcpsReq.Req.Unconfirmed.fBufferSize = APPDATA_SIZE+2;
+ // pc.putc('l');
+ // mcpsReq.Req.Unconfirmed.Datarate = DR_5;
+ // status = !status;
+ //GPS_status = !GPS_status;
+ // pc.putc('m');
+ // LoRaMacMcpsRequest( &mcpsReq );
+ // GPS_data_ready = 0;
+ // Ready_for_more = 1;
+ //}
+ sending = 0;
+ __enable_irq();//NVIC_EnableIRQ(USART1_IRQn);
+ pc.putc('N');
+}
+
void gps_receive(void) {
// Note: you need to actually read from the serial to clear the RX interrupt
- //while(gps.readable()) {
- GPS_status= !GPS_status;
- if(sending==1){
- flushSerialBuffer();
- return;
- }
- if(gps.readable()){
- __disable_irq();
- keepOut = true;
+ __disable_irq();
+ keepOut = true; //
+ while(gps.readable()) {
char incoming = gps.getc();
// #ifdef DEBUGGER
// pc.putc(incoming);
// #endif
Rx_data[Char_index] = incoming;
- if((Rx_data[Char_index] == '\n'))
- { // Received the end of an NMEA scentence
- if((strncmp(GPRMC_Tag,Rx_data,(sizeof(GPRMC_Tag)-1)) == 0) || (strncmp(GNRMC_Tag,Rx_data,(sizeof(GNRMC_Tag)-1)) == 0))
- {
+ if((Rx_data[Char_index] == '\n')){ // Received the end of an NMEA scentence
+ if((strncmp(GPRMC_Tag,Rx_data,(sizeof(GPRMC_Tag)-1)) == 0) || (strncmp(GNRMC_Tag,Rx_data,(sizeof(GNRMC_Tag)-1)) == 0)){
RMC = Parse_RMC_sentence(Rx_data);
- if(strcmp(RMC.Status, "A") == 0)
- {
- // GPS_status = 0; // Turn status LED off
+ if(strcmp(RMC.Status, "A") == 0){
+ // valid = 1;
+ // GPS_status = 0; // Turn status LED off
+ // GPS_parse = Parse_RMC_data(RMC); // Parse into format suitable for Tom (Dinghy_RaceTrak software)
+ // Call function to send using LoRa module
+ // LoRaSend();
+ // pc.putc('O');
+ if(timerset == false)
+ firstfix = true;
+ /*
+ if(firstfix == false) //
+ { //
+ //LoRaSend_timer.attach(&LoRaSend, 1.0); //
+ firstfix = true; //
+ } */ //
}
- else
- {
+ else{
// GPS_status = 1;
+ // Send "No GPS fix" over LoRa?
}
- if (sending)
- {
- Char_index = 0;
- memset(Rx_data,0,sizeof(Rx_data));
- __enable_irq();
- keepOut = false;
- return;
- }
- GPS_data_ready = 0;
+ ///*
+ if (sending) //
+ { //
+ Char_index = 0; //
+ memset(Rx_data,0,sizeof(Rx_data)); //
+ __enable_irq(); //
+ keepOut = false; //
+ return; //
+ } //*/ //
+ GPS_status=!GPS_status;
+ // delete this line
+ //GPS_data_ready = 0;
GPS_parse = Parse_RMC_data(RMC); // Parse into format suitable for Tom (Dinghy_RaceTrak software)
- GPS_data_ready = 1;
+ //GPS_data_ready = 1;
+
+
}
Char_index = 0;
memset(Rx_data,0,sizeof(Rx_data));
-
}
else
Char_index++;
}
keepOut = false;
__enable_irq();
+ // put first fix code here if above doesn't work
return;
-}
-
-void LoRaSend(){
- //GPS_status = !GPS_status;
- if (keepOut)
- return;
- __disable_irq();//NVIC_DisableIRQ(USART1_IRQn);
- if(GPS_data_ready == 1){
- sending = 1;
- char AppDatas[APPDATA_SIZE];
- strcpy(AppDatas, GPS_parse.Latitude);
- strcat(AppDatas, ",");
- strcat(AppDatas, GPS_parse.Longitude);
- strcat(AppDatas, ",");
- strcat(AppDatas, GPS_parse.Course_Over_Ground);
- strcat(AppDatas, ",");
- strcat(AppDatas, GPS_parse.Speed_Over_Ground);
- strcat(AppDatas, ",");
- //strcat(AppDatas, GPS_parse.Date);
- //strcat(AppDatas, ",");
- strcat(AppDatas, GPS_parse.UTC_Time);
- strcat(AppDatas, ",");
- strcat(AppDatas, GPS_parse.Valid);
-
- McpsReq_t mcpsReq;
-
- uint8_t AppPort = 3;
- mcpsReq.Type = MCPS_UNCONFIRMED;
- mcpsReq.Req.Unconfirmed.fPort = AppPort;
- mcpsReq.Req.Unconfirmed.fBuffer = AppDatas;
- mcpsReq.Req.Unconfirmed.fBufferSize = APPDATA_SIZE+2;
- mcpsReq.Req.Unconfirmed.Datarate = DR_5;
- // status = !status;
- //GPS_status = !GPS_status;
- LoRaMacMcpsRequest( &mcpsReq );
- GPS_data_ready = 0;
- // Ready_for_more = 1;
- }
- sending = 0;
- __enable_irq();//NVIC_EnableIRQ(USART1_IRQn);
+ // store chars into a string then process into LAT, LONG, SOG, COG & DATETIME, VALID/INVLAID
}
void McpsConfirm( McpsConfirm_t *mcpsConfirm )
@@ -230,7 +262,7 @@
//Sendframe
McpsReq_t mcpsReq;
-
+
uint8_t AppPort = 3;
mcpsReq.Type = MCPS_UNCONFIRMED;
mcpsReq.Req.Unconfirmed.fPort = AppPort;
@@ -239,7 +271,6 @@
mcpsReq.Req.Unconfirmed.Datarate = DR_5;
LoRaMacMcpsRequest( &mcpsReq );*/
-
GPS_status = 1;
gps.attach(&gps_receive, Serial::RxIrq);
gps.printf(PMTK_SET_NMEA_OUTPUT_RMC); // Only output RMC and GPTXT
@@ -253,9 +284,16 @@
gps.printf(PMTK_SET_NMEA_OUTPUT_RMC); // Only output RMC and GPTXT
wait(1.0);
gps.printf(PMTK_SET_UPDATE_F_2HZ); // Set update Frequency to 2Hz
- LoRaSend_timer.attach(&LoRaSend, 1.0);
+ //LoRaSend_timer.attach(&LoRaSend, 1.0);
while(1){
- //Print_RMC_data(&RMC);
- //wait(0.5);
+ if(sending==0){
+ Print_GPS_data(GPS_parse);
+ }
+ if(firstfix){
+ LoRaSend_timer.attach(&LoRaSend, 1.0);
+ firstfix = false;
+ timerset = true;
+ }
+ wait(0.5);
}
}
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