92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
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GPS module
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Copyright (C) 2018 by Xose Pérez <xose dot perez at gmail dot com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <TinyGPS++.h>
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uint32_t LatitudeBinary, LongitudeBinary;
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uint16_t altitudeGps;
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uint8_t hdopGps;
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char t[32]; // used to sprintf for Serial output
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TinyGPSPlus _gps;
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HardwareSerial _serial_gps(GPS_SERIAL_NUM);
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void gps_time(char * buffer, uint8_t size) {
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snprintf(buffer, size, "%02d:%02d:%02d", _gps.time.hour(), _gps.time.minute(), _gps.time.second());
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}
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float gps_latitude() {
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return _gps.location.lat();
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}
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float gps_longitude() {
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return _gps.location.lng();
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}
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float gps_altitude() {
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return _gps.altitude.meters();
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}
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float gps_hdop() {
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return _gps.hdop.hdop();
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}
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uint8_t gps_sats() {
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return _gps.satellites.value();
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}
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void gps_setup() {
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_serial_gps.begin(GPS_BAUDRATE, SERIAL_8N1, GPS_RX_PIN, GPS_TX_PIN);
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}
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static void gps_loop() {
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while (_serial_gps.available()) {
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_gps.encode(_serial_gps.read());
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}
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}
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void buildPacket(uint8_t txBuffer[9])
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{
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LatitudeBinary = ((_gps.location.lat() + 90) / 180.0) * 16777215;
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LongitudeBinary = ((_gps.location.lng() + 180) / 360.0) * 16777215;
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sprintf(t, "Lat: %f", _gps.location.lat());
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Serial.println(t);
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sprintf(t, "Lng: %f", _gps.location.lng());
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Serial.println(t);
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txBuffer[0] = ( LatitudeBinary >> 16 ) & 0xFF;
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txBuffer[1] = ( LatitudeBinary >> 8 ) & 0xFF;
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txBuffer[2] = LatitudeBinary & 0xFF;
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txBuffer[3] = ( LongitudeBinary >> 16 ) & 0xFF;
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txBuffer[4] = ( LongitudeBinary >> 8 ) & 0xFF;
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txBuffer[5] = LongitudeBinary & 0xFF;
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altitudeGps = _gps.altitude.meters();
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txBuffer[6] = ( altitudeGps >> 8 ) & 0xFF;
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txBuffer[7] = altitudeGps & 0xFF;
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hdopGps = _gps.hdop.value()/10;
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txBuffer[8] = hdopGps & 0xFF;
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}
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