implemented Power On/Off (UBX-RXM-PMREQ)

examples/Example22_PowerOff/Example22_PowerOff.ino

@@ -32,12 +32,12 @@ SFE_UBLOX_GPS myGPS;
 // define a digital pin capable of driving HIGH and LOW
 #define WAKEUP_PIN 5
 
-// interrupt pin mapping
-#define GPS_RX 0
-#define GPS_INT0 1
-#define GPS_INT1 2
-#define GPS_SPI_CS 3
-
+// Possible GNSS interrupt pins for powerOffWithInterrupt are:
+// VAL_RXM_PMREQ_WAKEUPSOURCE_UARTRX = uartrx
+// VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0 = extint0 (default)
+// VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT1 = extint1
+// VAL_RXM_PMREQ_WAKEUPSOURCE_SPICS = spics
+// These values can be or'd (|) together to enable interrupts on multiple pins
 
 void wakeUp() {
 
@@ -55,13 +55,16 @@ void wakeUp() {
 void setup() {
 
  pinMode(WAKEUP_PIN, OUTPUT);
+ digitalWrite(WAKEUP_PIN, LOW);
 
  Serial.begin(115200);
  while (!Serial); //Wait for user to open terminal
  Serial.println("SparkFun Ublox Example");
 
  Wire.begin();
 
+ //myGPS.enableDebugging(); // Enable debug messages
+
  if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
  {
  Serial.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
@@ -72,7 +75,7 @@ void setup() {
  Serial.println("-- Powering off module for 20s --");
 
  myGPS.powerOff(20000);
- // myGPS.powerOffWithInterrupt(20000, GPS_INT0);
+ //myGPS.powerOffWithInterrupt(20000, VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0);
 
  delay(10000);
 

keywords.txt

@@ -139,8 +139,8 @@ setDynamicModel	KEYWORD2
 getDynamicModel	KEYWORD2
 powerSaveMode	KEYWORD2
 getPowerSaveMode	KEYWORD2
-powerOff KEYWORD2
-powerOffWithInterrupt KEYWORD2
+powerOffKEYWORD2
+powerOffWithInterruptKEYWORD2
 
 configureMessage	KEYWORD2
 enableMessage	KEYWORD2

src/SparkFun_Ublox_Arduino_Library.cpp

@@ -2596,6 +2596,11 @@ boolean SFE_UBLOX_GPS::powerOff(uint32_t durationInMs, uint16_t maxWait)
  payloadCfg[2] = (durationInMs >> (8*2)) & 0xff;
  payloadCfg[3] = (durationInMs >> (8*3)) & 0xff;
 
+ payloadCfg[4] = 0x02; //Flags : set the backup bit
+ payloadCfg[5] = 0x00; //Flags
+ payloadCfg[6] = 0x00; //Flags
+ payloadCfg[7] = 0x00; //Flags
+
  if (maxWait != 0)
  {
  // check for "not acknowledged" command
@@ -2614,7 +2619,7 @@ boolean SFE_UBLOX_GPS::powerOff(uint32_t durationInMs, uint16_t maxWait)
 // NOTE: Querying the device before the duration is complete, for example by "getLatitude()" will wake it up!
 // Returns true if command has not been not acknowledged.
 // Returns false if command has not been acknowledged or maxWait = 0.
-boolean SFE_UBLOX_GPS::powerOffWithInterrupt(uint32_t durationInMs, uint8_t wakeupPin, boolean forceWhileUsb, uint16_t maxWait)
+boolean SFE_UBLOX_GPS::powerOffWithInterrupt(uint32_t durationInMs, uint32_t wakeupSources, boolean forceWhileUsb, uint16_t maxWait)
 {
  // use durationInMs = 0 for infinite duration
  if (_printDebug == true)
@@ -2631,7 +2636,11 @@ boolean SFE_UBLOX_GPS::powerOffWithInterrupt(uint32_t durationInMs, uint8_t wake
  packetCfg.startingSpot = 0;
 
  payloadCfg[0] = 0x00; // message version
- // bytes 1-3 are reserved
+
+ // bytes 1-3 are reserved - and must be set to zero
+ payloadCfg[1] = 0x00;
+ payloadCfg[2] = 0x00;
+ payloadCfg[3] = 0x00;
 
  // duration
  // big endian to little endian, switch byte order
@@ -2641,49 +2650,35 @@ boolean SFE_UBLOX_GPS::powerOffWithInterrupt(uint32_t durationInMs, uint8_t wake
  payloadCfg[7] = (durationInMs >> (8*3)) & 0xff;
 
  // flags
- payloadCfg[8] = 0x00;
- payloadCfg[9] = 0x00;
- payloadCfg[10] = 0x00;
 
  // disables USB interface when powering off, defaults to true
  if (forceWhileUsb)
  {
- payloadCfg[11] = 0x04;
+ payloadCfg[8] = 0x06; // force | backup
  }
  else
  {
- payloadCfg[11] = 0x02;
+ payloadCfg[8] = 0x02; // backup only (leave the force bit clear - module will stay on if USB is connected)
  }
 
- // wakeUpSources
- payloadCfg[12] = 0x00;
- payloadCfg[13] = 0x00;
- payloadCfg[14] = 0x00;
-
- // wakeupPin mapping, defaults to EXINT0, limited to one pin for now
- // last byte of wakeUpSources
- uint8_t terminatingByte;
-
- switch (wakeupPin)
- {
- case 0: // UART RX
- terminatingByte = 0x08; // 0000 1000
- break;
+ payloadCfg[9] = 0x00;
+ payloadCfg[10] = 0x00;
+ payloadCfg[11] = 0x00;
 
- case 1: // EXINT 0
- terminatingByte = 0x20; // 0010 0000
- break;
+ // wakeUpSources
 
- case 2: // EXINT 1
- terminatingByte = 0x40; // 0100 0000
- break;
+ // wakeupPin mapping, defaults to VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0
 
- case 3: // SPI CS
- terminatingByte = 0x80; // 1000 0000
- break;
- }
+ // Possible values are:
+ // VAL_RXM_PMREQ_WAKEUPSOURCE_UARTRX
+ // VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0
+ // VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT1
+ // VAL_RXM_PMREQ_WAKEUPSOURCE_SPICS
 
- payloadCfg[15] = terminatingByte;
+ payloadCfg[12] = (wakeupSources >> (8*0)) & 0xff;
+ payloadCfg[13] = (wakeupSources >> (8*1)) & 0xff;
+ payloadCfg[14] = (wakeupSources >> (8*2)) & 0xff;
+ payloadCfg[15] = (wakeupSources >> (8*3)) & 0xff;
 
  if (maxWait != 0)
  {

src/SparkFun_Ublox_Arduino_Library.h

@@ -407,6 +407,12 @@ const uint32_t VAL_CFG_SUBSEC_ANTCONF = 0x00000400; // antConf - antenna config
 const uint32_t VAL_CFG_SUBSEC_LOGCONF = 0x00000800; // logConf - logging configuration
 const uint32_t VAL_CFG_SUBSEC_FTSCONF = 0x00001000; // ftsConf - FTS configuration (FTS products only)
 
+// Bitfield wakeupSources for UBX_RXM_PMREQ
+const uint32_t VAL_RXM_PMREQ_WAKEUPSOURCE_UARTRX = 0x00000008; // uartrx
+const uint32_t VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0 = 0x00000020; // extint0
+const uint32_t VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT1 = 0x00000040; // extint1
+const uint32_t VAL_RXM_PMREQ_WAKEUPSOURCE_SPICS = 0x00000080; // spics
+
 enum dynModel // Possible values for the dynamic platform model, which provide more accuract position output for the situation. Description extracted from ZED-F9P Integration Manual
 {
 DYN_MODEL_PORTABLE = 0, //Applications with low acceleration, e.g. portable devices. Suitable for most situations.
@@ -642,7 +648,7 @@ class SFE_UBLOX_GPS
 boolean powerSaveMode(bool power_save = true, uint16_t maxWait = 1100);
 uint8_t getPowerSaveMode(uint16_t maxWait = 1100); // Returns 255 if the sendCommand fails
 boolean powerOff(uint32_t durationInMs, uint16_t maxWait = 1100);
-boolean powerOffWithInterrupt(uint32_t durationInMs, uint8_t wakeupPin = 1, boolean forceWhileUsb = true, uint16_t maxWait = 1100);
+boolean powerOffWithInterrupt(uint32_t durationInMs, uint32_t wakeupSources = VAL_RXM_PMREQ_WAKEUPSOURCE_EXTINT0, boolean forceWhileUsb = true, uint16_t maxWait = 1100);
 
 //Change the dynamic platform model using UBX-CFG-NAV5
 boolean setDynamicModel(dynModel newDynamicModel = DYN_MODEL_PORTABLE, uint16_t maxWait = 1100);