diff options
| author | Keith Packard <keithp@keithp.com> | 2013-04-25 22:21:26 -0700 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2013-04-25 22:21:26 -0700 |
| commit | fefc021045089ffd00d03e4c4e6cf42a13692828 (patch) | |
| tree | bacaf971cbc81cd13311d307e3e96c5cf95efc62 /src/drivers/ao_mpu6000.c | |
| parent | 38206dd71e70565ded505a1e86257cd49b10bf9b (diff) | |
altos: Add TeleMega v0.3 support
Includes adding SPI support to the MPU6000 driver
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'src/drivers/ao_mpu6000.c')
| -rw-r--r-- | src/drivers/ao_mpu6000.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/src/drivers/ao_mpu6000.c b/src/drivers/ao_mpu6000.c index 6d47482c..c65aecbc 100644 --- a/src/drivers/ao_mpu6000.c +++ b/src/drivers/ao_mpu6000.c @@ -22,47 +22,71 @@ static uint8_t ao_mpu6000_wake; static uint8_t ao_mpu6000_configured; -static void -ao_mpu6000_write(uint8_t addr, uint8_t *data, uint8_t len) -{ - ao_i2c_get(AO_MPU6000_I2C_INDEX); - ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_WRITE); - ao_i2c_send(&addr, 1, AO_MPU6000_I2C_INDEX, FALSE); - ao_i2c_send(data, len, AO_MPU6000_I2C_INDEX, TRUE); - ao_i2c_put(AO_MPU6000_I2C_INDEX); -} +#define ao_mpu6000_spi_get() ao_spi_get_bit(AO_MPU6000_SPI_CS_PORT, \ + AO_MPU6000_SPI_CS_PIN, \ + AO_MPU6000_SPI_CS, \ + AO_MPU6000_SPI_BUS, \ + AO_SPI_SPEED_1MHz) + +#define ao_mpu6000_spi_put() ao_spi_put_bit(AO_MPU6000_SPI_CS_PORT, \ + AO_MPU6000_SPI_CS_PIN, \ + AO_MPU6000_SPI_CS, \ + AO_MPU6000_SPI_BUS) + static void ao_mpu6000_reg_write(uint8_t addr, uint8_t value) { uint8_t d[2] = { addr, value }; +#ifdef AO_MPU6000_I2C_INDEX ao_i2c_get(AO_MPU6000_I2C_INDEX); ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_WRITE); ao_i2c_send(d, 2, AO_MPU6000_I2C_INDEX, TRUE); ao_i2c_put(AO_MPU6000_I2C_INDEX); +#else + ao_mpu6000_spi_get(); + ao_spi_send(d, 2, AO_MPU6000_SPI_BUS); + ao_mpu6000_spi_put(); +#endif } static void ao_mpu6000_read(uint8_t addr, void *data, uint8_t len) { +#ifdef AO_MPU6000_I2C_INDEX ao_i2c_get(AO_MPU6000_I2C_INDEX); ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_WRITE); ao_i2c_send(&addr, 1, AO_MPU6000_I2C_INDEX, FALSE); ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_READ); ao_i2c_recv(data, len, AO_MPU6000_I2C_INDEX, TRUE); ao_i2c_put(AO_MPU6000_I2C_INDEX); +#else + addr |= 0x80; + ao_mpu6000_spi_get(); + ao_spi_send(&addr, 1, AO_MPU6000_SPI_BUS); + ao_spi_recv(data, len, AO_MPU6000_SPI_BUS); + ao_mpu6000_spi_put(); +#endif } static uint8_t ao_mpu6000_reg_read(uint8_t addr) { uint8_t value; +#ifdef AO_MPU6000_I2C_INDEX ao_i2c_get(AO_MPU6000_I2C_INDEX); ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_WRITE); ao_i2c_send(&addr, 1, AO_MPU6000_I2C_INDEX, FALSE); ao_i2c_start(AO_MPU6000_I2C_INDEX, MPU6000_ADDR_READ); ao_i2c_recv(&value, 1, AO_MPU6000_I2C_INDEX, TRUE); ao_i2c_put(AO_MPU6000_I2C_INDEX); +#else + addr |= 0x80; + ao_mpu6000_spi_get(); + ao_spi_send(&addr, 1, AO_MPU6000_SPI_BUS); + ao_spi_recv(&value, 1, AO_MPU6000_SPI_BUS); + ao_mpu6000_spi_put(); +#endif return value; } |