Implemented first Hangar-Service
Dependencies: CalibrateMagneto QuaternionMath
Fork of SML2 by
Gyroscope.cpp@16:3e2468d4f4c1, 2015-03-20 (annotated)
- Committer:
- pvaibhav
- Date:
- Fri Mar 20 10:30:01 2015 +0000
- Revision:
- 16:3e2468d4f4c1
- Parent:
- 12:1632d7391453
- Child:
- 21:5a0c9406e119
Barometer driver converted to new Sensor infrastructure
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
pvaibhav | 4:e759b8c756da | 1 | #include "Gyroscope.h" |
pvaibhav | 4:e759b8c756da | 2 | #define DEBUG "BMX055-Gyr" |
pvaibhav | 4:e759b8c756da | 3 | #include "Logger.h" |
pvaibhav | 4:e759b8c756da | 4 | |
pvaibhav | 8:cba37530d480 | 5 | #include "Vector3.h" |
pvaibhav | 8:cba37530d480 | 6 | |
pvaibhav | 7:604a8369b801 | 7 | Gyroscope::Gyroscope(I2C &i2c) : I2CPeripheral(i2c, 0x69 << 1 /* address */), int1(p3) |
pvaibhav | 7:604a8369b801 | 8 | { |
pvaibhav | 6:c12cea26842d | 9 | if (powerOn()) { |
pvaibhav | 5:b9f2f62a8f90 | 10 | INFO("Bosch Sensortec BMX055-Gyro found"); |
pvaibhav | 7:604a8369b801 | 11 | powerOff(); |
pvaibhav | 4:e759b8c756da | 12 | } else { |
pvaibhav | 6:c12cea26842d | 13 | WARN("Bosch Sensortec BMX055-Gyro not found"); |
pvaibhav | 4:e759b8c756da | 14 | } |
pvaibhav | 4:e759b8c756da | 15 | } |
pvaibhav | 4:e759b8c756da | 16 | |
pvaibhav | 7:604a8369b801 | 17 | void Gyroscope::powerOff() |
pvaibhav | 7:604a8369b801 | 18 | { |
pvaibhav | 5:b9f2f62a8f90 | 19 | write_reg(0x11, 1); |
pvaibhav | 6:c12cea26842d | 20 | LOG("deep sleep"); |
pvaibhav | 5:b9f2f62a8f90 | 21 | } |
pvaibhav | 5:b9f2f62a8f90 | 22 | |
pvaibhav | 7:604a8369b801 | 23 | void Gyroscope::handleInterrupt(void) |
pvaibhav | 7:604a8369b801 | 24 | { |
pvaibhav | 8:cba37530d480 | 25 | sendData(read()); |
pvaibhav | 5:b9f2f62a8f90 | 26 | } |
pvaibhav | 5:b9f2f62a8f90 | 27 | |
pvaibhav | 7:604a8369b801 | 28 | bool Gyroscope::powerOn() |
pvaibhav | 7:604a8369b801 | 29 | { |
pvaibhav | 5:b9f2f62a8f90 | 30 | write_reg(0x14, 0xB6); // softreset |
pvaibhav | 5:b9f2f62a8f90 | 31 | wait_ms(30); |
pvaibhav | 6:c12cea26842d | 32 | LOG("powered on"); |
pvaibhav | 6:c12cea26842d | 33 | return read_reg(0x00) == 0x0f; // verify Chip ID |
pvaibhav | 5:b9f2f62a8f90 | 34 | } |
pvaibhav | 5:b9f2f62a8f90 | 35 | |
pvaibhav | 7:604a8369b801 | 36 | void Gyroscope::start() |
pvaibhav | 7:604a8369b801 | 37 | { |
pvaibhav | 5:b9f2f62a8f90 | 38 | write_reg(0x10, 5); // set capture rate: 200 Hz / filter: 23 Hz |
pvaibhav | 5:b9f2f62a8f90 | 39 | write_reg(0x16, 5); // interrupts active high, push-pull |
pvaibhav | 5:b9f2f62a8f90 | 40 | write_reg(0x18, 1 << 0); // map new data interrupt to INT3 pin (1st interrupt for gyro) |
pvaibhav | 5:b9f2f62a8f90 | 41 | int1.rise(this, &Gyroscope::handleInterrupt); |
pvaibhav | 5:b9f2f62a8f90 | 42 | write_reg(0x15, 1 << 7); // new data interrupt enabled |
pvaibhav | 6:c12cea26842d | 43 | } |
pvaibhav | 6:c12cea26842d | 44 | |
pvaibhav | 7:604a8369b801 | 45 | void Gyroscope::stop() |
pvaibhav | 7:604a8369b801 | 46 | { |
pvaibhav | 6:c12cea26842d | 47 | write_reg(0x15, 0); // turn off new data interrupt |
pvaibhav | 6:c12cea26842d | 48 | } |
pvaibhav | 6:c12cea26842d | 49 | |
pvaibhav | 8:cba37530d480 | 50 | Vector3 Gyroscope::read() |
pvaibhav | 7:604a8369b801 | 51 | { |
pvaibhav | 7:604a8369b801 | 52 | // This chip causes high spikes in the data if FIFO or auto-incremented buffer is read. |
pvaibhav | 7:604a8369b801 | 53 | // To work around this, we will read each register ourselves. Also keeping interrupt disabled |
pvaibhav | 7:604a8369b801 | 54 | // until we finish reading all bytes. |
pvaibhav | 8:cba37530d480 | 55 | const float gyro_resolution = 0.0610351563; // deg/sec |
pvaibhav | 8:cba37530d480 | 56 | |
pvaibhav | 7:604a8369b801 | 57 | write_reg(0x15, 0); // new data interrupt disabled |
pvaibhav | 12:1632d7391453 | 58 | |
pvaibhav | 12:1632d7391453 | 59 | uint8_t buffer[6]; |
pvaibhav | 12:1632d7391453 | 60 | for (size_t i = 0; i < 6; i++) |
pvaibhav | 12:1632d7391453 | 61 | buffer[i] = read_reg(0x02 + i); |
pvaibhav | 12:1632d7391453 | 62 | |
pvaibhav | 12:1632d7391453 | 63 | const int16_t x = buffer[1] << 8 | buffer[0]; |
pvaibhav | 12:1632d7391453 | 64 | const int16_t y = buffer[3] << 8 | buffer[2]; |
pvaibhav | 12:1632d7391453 | 65 | const int16_t z = buffer[5] << 8 | buffer[4]; |
pvaibhav | 12:1632d7391453 | 66 | |
pvaibhav | 7:604a8369b801 | 67 | write_reg(0x15, 1 << 7); // new data interrupt enabled |
pvaibhav | 8:cba37530d480 | 68 | |
pvaibhav | 16:3e2468d4f4c1 | 69 | return Vector3(x, y, z) * gyro_resolution; |
pvaibhav | 6:c12cea26842d | 70 | } |