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Merge pull request #2 from adafruit/LPS22
LPS22 support (and some LPS25 changes)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| #include <Adafruit_LPS2X.h> | ||
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| /*! @brief Initializer for post i2c/spi init | ||
| * @param sensor_id Optional unique ID for the sensor set | ||
| * @returns True if chip identified and initialized | ||
| */ | ||
| bool Adafruit_LPS22::_init(int32_t sensor_id) { | ||
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| Adafruit_BusIO_Register chip_id = Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS2X_WHOAMI, 1); | ||
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| // make sure we're talking to the right chip | ||
| uint8_t id = chip_id.read(); | ||
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| if (id != LPS22HB_CHIP_ID) { | ||
| return false; | ||
| } | ||
| _sensorid_pressure = sensor_id; | ||
| _sensorid_temp = sensor_id + 1; | ||
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| temp_scaling = 100; | ||
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| ctrl1_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS22_CTRL_REG1, 1); | ||
| ctrl2_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS22_CTRL_REG2, 1); | ||
| ctrl3_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS22_CTRL_REG3, 1); | ||
| threshp_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS22_THS_P_L_REG, 1); | ||
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| reset(); | ||
| // do any software reset or other initial setup | ||
| setDataRate(LPS22_RATE_25_HZ); | ||
| // interrupt on data ready | ||
| configureInterrupt(true, false, true); | ||
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| pressure_sensor = new Adafruit_LPS2X_Pressure(this); | ||
| temp_sensor = new Adafruit_LPS2X_Temp(this); | ||
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| delay(10); // delay for first reading | ||
| return true; | ||
| } | ||
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| /** | ||
| * @brief Sets the rate at which pressure and temperature measurements | ||
| * | ||
| * @param new_data_rate The data rate to set. Must be a `lps22_rate_t` | ||
| */ | ||
| void Adafruit_LPS22::setDataRate(lps22_rate_t new_data_rate) { | ||
| Adafruit_BusIO_RegisterBits data_rate = | ||
| Adafruit_BusIO_RegisterBits(ctrl1_reg, 3, 4); | ||
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| data_rate.write((uint8_t)new_data_rate); | ||
| } | ||
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| /** | ||
| * @brief Gets the current rate at which pressure and temperature measurements | ||
| * are taken | ||
| * | ||
| * @return lps22_rate_t The current data rate | ||
| */ | ||
| lps22_rate_t Adafruit_LPS22::getDataRate(void) { | ||
| Adafruit_BusIO_RegisterBits data_rate = | ||
| Adafruit_BusIO_RegisterBits(ctrl1_reg, 3, 4); | ||
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| return (lps22_rate_t)data_rate.read(); | ||
| } | ||
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| /** | ||
| * @brief Configures the INT pin | ||
| * @param activelow Pass true to make the INT pin drop low on interrupt | ||
| * @param opendrain Pass true to make the INT pin an open drain output | ||
| * @param data_ready If true, interrupt fires on new data ready | ||
| * @param pres_high If true, interrupt fires on high threshold pass | ||
| * @param pres_low If true, interrupt fires on low threshold pass | ||
| * @param fifo_full If true, interrupt fires on fifo full | ||
| * @param fifo_watermark If true, interrupt fires on fifo watermark pass | ||
| * @param fifo_overflow If true, interrupt fires on fifo overflow | ||
| */ | ||
| void Adafruit_LPS22::configureInterrupt(bool activelow, bool opendrain, | ||
| bool data_ready, bool pres_high, | ||
| bool pres_low, bool fifo_full, | ||
| bool fifo_watermark, | ||
| bool fifo_overflow) { | ||
| uint8_t reg = (activelow << 7) | (opendrain << 6) | (fifo_full << 5) | | ||
| (fifo_watermark << 4) | (fifo_overflow << 3) | | ||
| (data_ready << 2); | ||
| ctrl3_reg->write(reg); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| #include <Adafruit_LPS2X.h> | ||
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| /*! @brief Initializer for post i2c/spi init | ||
| * @param sensor_id Optional unique ID for the sensor set | ||
| * @returns True if chip identified and initialized | ||
| */ | ||
| bool Adafruit_LPS25::_init(int32_t sensor_id) { | ||
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| Adafruit_BusIO_Register chip_id = Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS2X_WHOAMI, 1); | ||
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| // make sure we're talking to the right chip | ||
| uint8_t id = chip_id.read(); | ||
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| if (id != LPS25HB_CHIP_ID) { | ||
| return false; | ||
| } | ||
| _sensorid_pressure = sensor_id; | ||
| _sensorid_temp = sensor_id + 1; | ||
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| temp_scaling = 480; | ||
| inc_spi_flag = 0x40; | ||
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| ctrl1_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_CTRL_REG1, 1); | ||
| ctrl2_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_CTRL_REG2, 1); | ||
| ctrl3_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_CTRL_REG3, 1); | ||
| threshp_reg = new Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_THS_P_L_REG, 1); | ||
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| reset(); | ||
| // do any software reset or other initial setup | ||
| powerDown(false); | ||
| setDataRate(LPS25_RATE_25_HZ); | ||
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| pressure_sensor = new Adafruit_LPS2X_Pressure(this); | ||
| temp_sensor = new Adafruit_LPS2X_Temp(this); | ||
| delay(10); // delay for first reading | ||
| return true; | ||
| } | ||
|
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| /** | ||
| * @brief Sets the rate at which pressure and temperature measurements | ||
| * | ||
| * @param new_data_rate The data rate to set. Must be a `lps25_rate_t` | ||
| */ | ||
| void Adafruit_LPS25::setDataRate(lps25_rate_t new_data_rate) { | ||
| Adafruit_BusIO_Register ctrl1 = Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_CTRL_REG1, 1); | ||
| Adafruit_BusIO_RegisterBits data_rate = | ||
| Adafruit_BusIO_RegisterBits(&ctrl1, 3, 4); | ||
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| data_rate.write((uint8_t)new_data_rate); | ||
| } | ||
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| /** | ||
| * @brief Gets the current rate at which pressure and temperature measurements | ||
| * are taken | ||
| * | ||
| * @return lps25_rate_t The current data rate | ||
| */ | ||
| lps25_rate_t Adafruit_LPS25::getDataRate(void) { | ||
| Adafruit_BusIO_Register ctrl1 = Adafruit_BusIO_Register( | ||
| i2c_dev, spi_dev, ADDRBIT8_HIGH_TOREAD, LPS25_CTRL_REG1, 1); | ||
| Adafruit_BusIO_RegisterBits data_rate = | ||
| Adafruit_BusIO_RegisterBits(&ctrl1, 3, 4); | ||
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| return (lps25_rate_t)data_rate.read(); | ||
| } | ||
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| /** | ||
| * @brief Puts the sensor into power down mode, shutting the sensor down | ||
| * | ||
| * @param power_down | ||
| */ | ||
| void Adafruit_LPS25::powerDown(bool power_down) { | ||
| Adafruit_BusIO_RegisterBits pd = Adafruit_BusIO_RegisterBits(ctrl1_reg, 1, 7); | ||
| pd.write(!power_down); // pd bit->0 == power down | ||
| } | ||
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| /** | ||
| * @brief Configures the INT pin, by default it will output DRDY signal | ||
| * @param activelow Pass true to make the INT pin drop low on interrupt | ||
| * @param opendrain Pass true to make the INT pin an open drain output | ||
| * @param pres_high If true, interrupt fires on high threshold pass | ||
| * @param pres_low If true, interrupt fires on low threshold pass | ||
| */ | ||
| void Adafruit_LPS25::configureInterrupt(bool activelow, bool opendrain, | ||
| bool pres_high, bool pres_low) { | ||
| uint8_t reg = | ||
| (activelow << 7) | (opendrain << 6) | (pres_low << 1) | pres_high; | ||
| ctrl3_reg->write(reg); | ||
| } |
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