Merge pull request #1454 from meshtastic/t-echo

fix GPS and Buttons on T-Echo and log UBX (1.3)

src/ButtonThread.h

@@ -78,10 +78,6 @@ class ButtonThread : public concurrency::OSThread
 
 #ifdef BUTTON_PIN_TOUCH
         userButtonTouch = OneButton(BUTTON_PIN_TOUCH, true, true);
-#ifdef INPUT_PULLUP_SENSE
-        // Some platforms (nrf52) have a SENSE variant which allows wake from sleep - override what OneButton did
-        pinMode(BUTTON_PIN_TOUCH, INPUT_PULLUP_SENSE);
-#endif
         userButtonTouch.attachClick(touchPressed);
         wakeOnIrq(BUTTON_PIN_TOUCH, FALLING);
 #endif

src/gps/GPS.cpp

@@ -22,6 +22,52 @@ GPS *gps;
 /// only init that port once.
 static bool didSerialInit;
 
+bool GPS::getACK(uint8_t c, uint8_t i) {
+  uint8_t b;
+  uint8_t ack = 0;
+  const uint8_t ackP[2] = {c, i};
+  uint8_t buf[250];
+  unsigned long startTime = millis();
+
+  buf[0] = 0xB5;
+  buf[1] = 0x62;
+  buf[2] = 0x05;
+  buf[3] = 0x01;
+  buf[4] = 0x02;
+  buf[5] = 0x00;
+  buf[8] = 0x00;
+  buf[9] = 0x00;
+
+  for (int j = 2; j < 6; j++) {
+    buf[8] += buf[j];
+    buf[9] += buf[8];
+  }
+
+  for (int j = 0; j < 2; j++) {
+    buf[6 + j] = ackP[j];
+    buf[8] += buf[6 + j];
+    buf[9] += buf[8];
+  }
+
+  while (1) {
+    if (ack > 9) {
+      return true;
+    }
+    if (millis() - startTime > 2000) {
+      return false;
+    }
+    if (_serial_gps->available()) {
+      b = _serial_gps->read();
+      if (b == buf[ack]) {
+        ack++;
+      }
+      else {
+        ack = 0;
+      }
+    }
+  }
+}
+
 bool GPS::setupGPS()
 {
     if (_serial_gps && !didSerialInit) {
@@ -37,13 +83,17 @@ bool GPS::setupGPS()
         _serial_gps->setRxBufferSize(2048); // the default is 256
 #endif
 #ifdef TTGO_T_ECHO
-        // Switch to 4800 baud, then close and reopen port
+        // Switch to 9600 baud, then close and reopen port
-        _serial_gps->write("$PCAS01,0*1C\r\n");
-        delay(250);
         _serial_gps->end();
         delay(250);
         _serial_gps->begin(4800);
         delay(250);
+        _serial_gps->write("$PCAS01,1*1D\r\n");
+        delay(250);
+        _serial_gps->end();
+        delay(250);
+        _serial_gps->begin(9600);
+        delay(250);
         // Initialize the L76K Chip, use GPS + GLONASS
         _serial_gps->write("$PCAS04,5*1C\r\n");
         delay(250);
@@ -60,37 +110,37 @@ bool GPS::setupGPS()
         byte _message_nmea[] = {0xB5, 0x62, 0x06, 0x00, 0x14, 0x00, 0x01, 0x00, 0x00, 0x00, 0xC0, 0x08, 0x00, 0x00,
                                 0x80, 0x25, 0x00, 0x00, 0x07, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x91, 0xAF};
         _serial_gps->write(_message_nmea, sizeof(_message_nmea));
-        delay(250);
+        if (!getACK(0x06, 0x00)) DEBUG_MSG("WARNING: Unable to set UART.\n");
 
         // disable GGL
         byte _message_GGL[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x05, 0x3A};
         _serial_gps->write(_message_GGL, sizeof(_message_GGL));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to disable NMEA GGL.\n");
 
         // disable GSA
         byte _message_GSA[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x02, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x06, 0x41};
         _serial_gps->write(_message_GSA, sizeof(_message_GSA));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to disable NMEA GSA.\n");
 
         // disable GSV
         byte _message_GSV[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x03, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x07, 0x48};
         _serial_gps->write(_message_GSV, sizeof(_message_GSV));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to disable NMEA GSV.\n");
 
         // disable VTG
         byte _message_VTG[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x05, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x09, 0x56};
         _serial_gps->write(_message_VTG, sizeof(_message_VTG));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to disable NMEA VTG.\n");
 
         // enable RMC
         byte _message_RMC[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x09, 0x54};
         _serial_gps->write(_message_RMC, sizeof(_message_RMC));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to enable NMEA RMC.\n");
 
         // enable GGA
         byte _message_GGA[] = {0xB5, 0x62, 0x06, 0x01, 0x08, 0x00, 0xF0, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x05, 0x38};
         _serial_gps->write(_message_GGA, sizeof(_message_GGA));
-        delay(250);
+        if (!getACK(0x06, 0x01)) DEBUG_MSG("WARNING: Unable to enable NMEA GGA.\n");
 #endif
     }
 

src/gps/GPS.h

@@ -135,6 +135,8 @@ class GPS : private concurrency::OSThread
      */
     uint32_t getSleepTime() const;
 
+    bool getACK(uint8_t c, uint8_t i);
+
     /**
      * Tell users we have new GPS readings
      */