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start in low power mode

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This commit is contained in:
Joey Castillo 2022-01-09 12:02:58 -05:00
parent 1ea476ca24
commit 5ceec26d5a
1 changed files with 2 additions and 6 deletions
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8
watch-library/driver/lis2dw.c
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@ -31,8 +31,8 @@ bool lis2dw_begin(void) {
}
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL2, LIS2DW_CTRL2_VAL_BOOT);
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL2, LIS2DW_CTRL2_VAL_SOFT_RESET);
// Start at 100 Hz data rate
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL1, LIS2DW_CTRL1_VAL_ODR_100HZ | LIS2DW_CTRL1_VAL_MODE_HIGH_PERFORMANCE);
// Start at lowest possible data rate and lowest possible power mode
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL1, LIS2DW_CTRL1_VAL_ODR_LOWEST | LIS2DW_CTRL1_VAL_MODE_LOW_POWER | LIS2DW_CTRL1_VAL_LPMODE_4);
// Enable block data update (output registers not updated until MSB and LSB have been read) and address autoincrement
watch_i2c_write8(LIS2DW_ADDRESS, LIS2DW_REG_CTRL2, LIS2DW_CTRL2_VAL_BDU | LIS2DW_CTRL2_VAL_IF_ADD_INC);
// Set range to ±2G
@ -65,10 +65,6 @@ lis2dw_reading lis2dw_get_raw_reading(void) {
retval.z = buffer[4];
retval.z |= ((uint16_t)buffer[5]) << 8;
retval.x >>= 2;
retval.y >>= 2;
retval.z >>= 2;
return retval;
}