DigitalInfinity/ESP32-PaxCounter
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UBX commands bugfix baudrate

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This commit is contained in:
cyberman54 2022-02-06 20:23:34 +01:00
parent ef15fa2d2a
commit babfe4b245
1 changed files with 25 additions and 13 deletions
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38
src/gpsread.cpp
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@ -25,6 +25,18 @@ static uint16_t nmea_txDelay_ms =
// helper functions to send UBX commands to ublox gps chip
/*
// Print the UBX packet for debugging
void printPacket(byte *packet, byte len) {
char temp[3];
for (byte i = 0; i < len; i++) {
sprintf(temp, "%.2X", packet[i]);
ESP_LOGD(TAG, "%s", temp);
}
}
*/
// Send the packet specified to the receiver.
void sendPacket(byte *packet, byte len) {
@ -75,8 +87,8 @@ void restoreDefaults() {
void disableNmea() {
// for tinygps++ we need only $GPGGA and $GPRMC
// for time we use $GPZDA
// we disable all others
// for getting time we use $GPZDA
// we disable all other NMEA messages
// Array of two bytes for CFG-MSG packets payload.
byte messages[][2] = {{0xF0, 0x01}, {0xF0, 0x02}, {0xF0, 0x03}, {0xF0, 0x05},
@ -124,20 +136,20 @@ void changeBaudrate(uint32_t baudRate) {
0x00, // length
0x01, // portID (UART 1)
0x00, // reserved
0x00, // reserved
0x00, // reserved
0x00, // txReady
0x00, // .
0b11010000, // UART mode: 8bit
0b00001000, // UART mode: No Parity, 1 Stopbit
0x00, // UART mode
0x00, // UART mode
0x00, // .
0x00, // .
(byte)baudRate, // baudrate (4 bytes)
(byte)(baudRate >> 4), // .
(byte)(baudRate >> 8), // .
(byte)(baudRate >> 12), // .
(byte)(baudRate >> 16), // .
(byte)(baudRate >> 24), // .
0b00000011, // input protocols: NMEA + UBX
0b00000000, // input protocols
0b00000000, // .
0b00000010, // output protocols: NMEA
0x00000000, // output protocols
0x00000000, // .
0x00, // reserved
0x00, // reserved
0x00, // reserved
@ -161,7 +173,7 @@ void changeFrequency() {
0x00, // Measurement rate
0x01, // Measurement cycles
0x00, // Measurement cycles
0x01, // Alignment to reference time: GPS time
0x00, // Alignment to reference time: UTC time
0x00 // payload
};
@ -171,10 +183,10 @@ void changeFrequency() {
// initialize and configure GPS
int gps_init(void) {
restoreDefaults();
ESP_LOGI(TAG, "Opening serial GPS");
GPS_Serial.begin(GPS_SERIAL);
restoreDefaults();
changeBaudrate(GPS_BAUDRATE);
delay(100);
GPS_Serial.flush();