des-car-2022/util.cpp

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#include <stdint.h>
#include <NeoSWSerial.h>
// https://stackoverflow.com/a/24396562
// Very nice angle normalization
inline int16_t normalize_angle(int16_t angle)
{
// if (angle > 180)
// angle -= 360;
// else if (angle < -180)
// angle += 360;
// return angle;
angle %= 360;
int16_t fix = angle / 180; // Integer division!!
return (fix) ? angle - (360 * (fix)) : angle;
}
#ifdef FAST_GNSS
// https://github.com/SlashDevin/NeoGPS/blob/master/examples/ubloxRate/ubloxRate.ino
inline void send_ubx(NeoSWSerial *gps_port, const unsigned char *progmemBytes, uint16_t len)
{
gps_port->write(0xB5); // SYNC1
gps_port->write(0x62); // SYNC2
uint8_t a = 0, b = 0;
while (len-- > 0)
{
uint8_t c = pgm_read_byte(progmemBytes++);
a += c;
b += a;
gps_port->write(c);
}
gps_port->write(a); // CHECKSUM A
gps_port->write(b); // CHECKSUM B
} // sendUBX
#endif