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sign extension is a pain
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Brendan Haines
2024-04-28 01:14:00 -06:00
parent ac56bb6ee0
commit 60a93c378b
1 changed files with 19 additions and 7 deletions
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26
drivers/sensor/bmx055/bmx055.c
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@ -126,9 +126,9 @@ static int bmx055_sample_fetch(const struct device *dev,
LOG_ERR("Failed to read acceleration registers!");
return ret;
}
data->accel_x = sys_get_be16(&accel[0]) >> 4;
data->accel_y = sys_get_be16(&accel[2]) >> 4;
data->accel_z = sys_get_be16(&accel[4]) >> 4;
data->accel_x = ((int16_t)sys_get_le16(&accel[0])) >> 4;
data->accel_y = ((int16_t)sys_get_le16(&accel[2])) >> 4;
data->accel_z = ((int16_t)sys_get_le16(&accel[4])) >> 4;
ret = i2c_burst_read_dt(&config->bus, REG_ACCD_TEMP, &data->temperature, sizeof(data->temperature));
if (ret < 0)
@ -211,11 +211,20 @@ static int bmx055_init(const struct device *dev)
LOG_ERR("Chip ID read from %s incorrect. Read 0x%02X, expected 0x%02X", dev->name, chip_id, CHIP_ID);
}
// Reset the sensor
uint8_t reset_val = BGW_SOFTRESET;
i2c_burst_write_dt(&config->bus, REG_BGW_SOFTRESET, &reset_val, sizeof(reset_val));
// // Reset the sensor
// uint8_t reset_val = BGW_SOFTRESET;
// i2c_burst_write_dt(&config->bus, REG_BGW_SOFTRESET, &reset_val, sizeof(reset_val));
// Wait for device to reset
// // Wait for device to reset
uint8_t lpw;
ret = i2c_burst_read_dt(&config->bus, REG_PMU_LPW, &lpw, sizeof(lpw));
if (ret < 0)
{
LOG_ERR("Failed to read LPW register!");
return ret;
}
LOG_INF("LPW register: 0x%02X", lpw);
// Write configuration
uint8_t accel_range = PMU_RANGE_2G;
@ -224,6 +233,9 @@ static int bmx055_init(const struct device *dev)
uint8_t accel_bw = PMU_BW_8HZ;
i2c_burst_write_dt(&config->bus, REG_PMU_BW, &accel_bw, sizeof(accel_bw));
uint8_t hbw = (1 << 7); // data_high_bw (read filtered data) and enable lsb/msb shadowing
i2c_burst_write_dt(&config->bus, REG_ACCD_HBW, &hbw, sizeof(hbw));
return 0;
}