Manuel Caballero
/
BME280
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Revision 4:a1c46ef057a6, committed 2019-09-03
- Comitter:
- mcm
- Date:
- Tue Sep 03 15:59:50 2019 +0000
- Parent:
- 3:ab857b70346e
- Commit message:
- The driver was completed and tested ( NUCLEO-L152RE ), it works as expected.
Changed in this revision
| BME280.h | Show annotated file Show diff for this revision Revisions of this file |
--- a/BME280.h Tue Sep 03 15:36:35 2019 +0000
+++ b/BME280.h Tue Sep 03 15:59:50 2019 +0000
@@ -81,10 +81,10 @@
#include "mbed.h"
#include "BME280.h"
-BME680 myBME280 ( I2C_SDA, I2C_SCL, 400000 );
+BME280 myBME280 ( I2C_SDA, I2C_SCL, 400000 );
Serial pc ( USBTX, USBRX );
-DigitalOut myled ( LED1 );
+DigitalOut myled ( LED1 );
Ticker newReading;
uint32_t myState = 0;
@@ -100,12 +100,36 @@
//@brief FUNCTION FOR APPLICATION MAIN ENTRY.
int main()
{
+ uint8_t settings_sel;
+ struct bme280_dev dev;
+ struct bme280_data comp_data;
+ int8_t rslt = BME280_OK;
+
pc.baud ( 115200 );
myled = 1;
wait(3);
myled = 0;
+ // Configure the device I2C interface
+ dev.dev_id = BME280_I2C_ADDR_PRIM;
+ dev.intf = BME280_I2C_INTF;
+ dev.read = user_i2c_read;
+ dev.write = user_i2c_write;
+ dev.delay_ms = user_delay_ms;
+
+ rslt = myBME280.bme280_init(&dev);
+
+ // Configure the device in Force mode
+ dev.settings.osr_h = BME280_OVERSAMPLING_1X;
+ dev.settings.osr_p = BME280_OVERSAMPLING_16X;
+ dev.settings.osr_t = BME280_OVERSAMPLING_2X;
+ dev.settings.filter = BME280_FILTER_COEFF_16;
+
+ settings_sel = BME280_OSR_PRESS_SEL | BME280_OSR_TEMP_SEL | BME280_OSR_HUM_SEL | BME280_FILTER_SEL;
+
+ rslt = myBME280.bme280_set_sensor_settings(settings_sel, &dev);
+
newReading.attach( &changeDATA, 1 ); // the address of the function to be attached ( changeDATA ) and the interval ( 1s )
@@ -117,8 +141,19 @@
myled = 1;
if ( myState == 1 ) {
+ // Trigger a new sample
+ rslt = myBME280.bme280_set_sensor_mode(BME280_FORCED_MODE, &dev);
- myState = 0; // Reset the variable
+ // Wait for the measurement to complete and print data @25Hz
+ dev.delay_ms(40);
+
+ // Get the data
+ rslt = myBME280.bme280_get_sensor_data(BME280_ALL, &comp_data, &dev);
+
+ // Transmit result over the UART
+ pc.printf( "T: %ld C | P: %ld Pa | RH: %ld %%\r\n", ( comp_data.temperature / 100 ), comp_data.pressure, ( comp_data.humidity / 1024 ) );
+
+ myState = 0; // Reset the variable
}
myled = 0;
@@ -126,78 +161,74 @@
}
-
-
- // @brief changeDATA ( void )
- //
- // @details It changes myState variable
- //
- // @param[in] N/A
- //
- // @param[out] N/A.
- //
- //
- // @return N/A..
- //
- //
- // @author Manuel Caballero
- // @date 03/September/2019
- // @version 03/September/2019 The ORIGIN
- // @pre N/A
- // @warning N/A.
+// @brief changeDATA ( void )
+//
+// @details It changes myState variable
+//
+// @param[in] N/A
+//
+// @param[out] N/A.
+//
+//
+// @return N/A..
+//
+//
+// @author Manuel Caballero
+// @date 03/September/2019
+// @version 03/September/2019 The ORIGIN
+// @pre N/A
+// @warning N/A.
void changeDATA ( void )
{
myState = 1;
}
-
- // @brief user_delay_ms ( uint32_t )
- //
- // @details Return control or wait, for a period amount of milliseconds
- //
- // @param[in] period: Delay in milliseconds.
- //
- // @param[out] N/A.
- //
- //
- // @return N/A..
- //
- //
- // @author Manuel Caballero
- // @date 03/September/2019
- // @version 03/September/2019 The ORIGIN
- // @pre This is a Bosh pointer function adapted to our system.
- // @warning N/A.
+// @brief user_delay_ms ( uint32_t )
+//
+// @details Return control or wait, for a period amount of milliseconds
+//
+// @param[in] period: Delay in milliseconds.
+//
+// @param[out] N/A.
+//
+//
+// @return N/A..
+//
+//
+// @author Manuel Caballero
+// @date 03/September/2019
+// @version 03/September/2019 The ORIGIN
+// @pre This is a Bosh pointer function adapted to our system.
+// @warning N/A.
void user_delay_ms ( uint32_t period )
{
- // Return control or wait,
- // for a period amount of milliseconds
+ // Return control or wait,
+ // for a period amount of milliseconds
wait_ms ( period );
}
-
- // @brief user_i2c_read ( uint8_t , uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
- //
- // @details It adapts I2C reading functionality.
- //
- // @param[in] dev_id: I2C address.
- // @param[in] reg_addr: Register to be read.
- // @param[in] len: How many bytes to read.
- //
- // @param[out] reg_data: Result.
- //
- //
- // @return Status of user_i2c_read.
- //
- //
- // @author Manuel Caballero
- // @date 03/September/2019
- // @version 03/September/2019 The ORIGIN
- // @pre This is a Bosh pointer function adapted to our system.
- // @warning N/A.
+// @brief user_i2c_read ( uint8_t , uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
+//
+// @details It adapts I2C reading functionality.
+//
+// @param[in] dev_id: I2C address.
+// @param[in] reg_addr: Register to be read.
+// @param[in] len: How many bytes to read.
+//
+// @param[out] reg_data: Result.
+//
+//
+// @return Status of user_i2c_read.
+//
+//
+// @author Manuel Caballero
+// @date 03/September/2019
+// @version 03/September/2019 The ORIGIN
+// @pre This is a Bosh pointer function adapted to our system.
+// @warning N/A.
int8_t user_i2c_read ( uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
{
int8_t rslt = 0; // Return 0 for Success, non-zero for failure
@@ -205,48 +236,57 @@
// The parameter dev_id can be used as a variable to store the I2C address of the device
- // Data on the bus should be like
- // |------------+---------------------|
- // | I2C action | Data |
- // |------------+---------------------|
- // | Start | - |
- // | Write | (reg_addr) |
- // | Stop | - |
- // | Start | - |
- // | Read | (reg_data[0]) |
- // | Read | (....) |
- // | Read | (reg_data[len - 1]) |
- // | Stop | - |
- // |------------+---------------------|
+ // Data on the bus should be like
+ // |------------+---------------------|
+ // | I2C action | Data |
+ // |------------+---------------------|
+ // | Start | - |
+ // | Write | (reg_addr) |
+ // | Stop | - |
+ // | Start | - |
+ // | Read | (reg_data[0]) |
+ // | Read | (....) |
+ // | Read | (reg_data[len - 1]) |
+ // | Stop | - |
+ // |------------+---------------------|
+ // Read data
+ uint32_t aux = 0;
+ aux = myBME280._i2c.write ( dev_id, (char*)®_addr, 1, true );
+ aux = myBME280._i2c.read ( dev_id, (char*)®_data[0], len );
+
+
+ if ( aux == 0 ) {
+ rslt = 0;
+ } else {
+ rslt = 0xFF;
+ }
return rslt;
}
-
-
- // @brief user_i2c_write ( uint8_t , uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
- //
- // @details It adapts I2C writing functionality.
- //
- // @param[in] dev_id: I2C address.
- // @param[in] reg_addr: Register to be read.
- // @param[out] reg_data: Data to be written.
- // @param[in] len: How many bytes to read.
- //
- // @param[out] N/A.
- //
- //
- // @return Status of user_i2c_write.
- //
- //
- // @author Manuel Caballero
- // @date 03/September/2019
- // @version 03/September/2019 The ORIGIN
- // @pre This is a Bosh pointer function adapted to our system.
- // @warning N/A.
+// @brief user_i2c_write ( uint8_t , uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
+//
+// @details It adapts I2C writing functionality.
+//
+// @param[in] dev_id: I2C address.
+// @param[in] reg_addr: Register to be read.
+// @param[out] reg_data: Data to be written.
+// @param[in] len: How many bytes to read.
+//
+// @param[out] N/A.
+//
+//
+// @return Status of user_i2c_write.
+//
+//
+// @author Manuel Caballero
+// @date 03/September/2019
+// @version 03/September/2019 The ORIGIN
+// @pre This is a Bosh pointer function adapted to our system.
+// @warning N/A.
int8_t user_i2c_write ( uint8_t dev_id, uint8_t reg_addr, uint8_t *reg_data, uint16_t len )
{
int8_t rslt = 0; // Return 0 for Success, non-zero for failure
@@ -266,7 +306,25 @@
// | Stop | - |
// |------------+---------------------|
+ uint32_t aux = 0;
+ char cmd[64] = { 0 };
+ uint32_t i = 0;
+ // Prepare the data to be sent
+ cmd[0] = reg_addr;
+ for ( i = 1; i <= len; i++ ) {
+ cmd[i] = reg_data[i - 1];
+ }
+
+ // Write data
+ aux = myBME280._i2c.write ( dev_id, &cmd[0], len + 1, false );
+
+
+ if ( aux == 0 ) {
+ rslt = 0;
+ } else {
+ rslt = 0xFF;
+ }
return rslt;
}
@@ -525,7 +583,7 @@
* @retval Compensated pressure data in double.
*/
double compensate_pressure(const struct bme280_uncomp_data *uncomp_data,
- const struct bme280_calib_data *calib_data);
+ const struct bme280_calib_data *calib_data);
/*!
* @brief This internal API is used to compensate the raw humidity data and
@@ -538,7 +596,7 @@
* @retval Compensated humidity data in double.
*/
double compensate_humidity(const struct bme280_uncomp_data *uncomp_data,
- const struct bme280_calib_data *calib_data);
+ const struct bme280_calib_data *calib_data);
/*!
* @brief This internal API is used to compensate the raw temperature data and
@@ -551,7 +609,7 @@
* @retval Compensated temperature data in double.
*/
double compensate_temperature(const struct bme280_uncomp_data *uncomp_data,
- struct bme280_calib_data *calib_data);
+ struct bme280_calib_data *calib_data);
#else
@@ -566,7 +624,7 @@
* @retval Compensated temperature data in integer.
*/
int32_t compensate_temperature(const struct bme280_uncomp_data *uncomp_data,
- struct bme280_calib_data *calib_data);
+ struct bme280_calib_data *calib_data);
/*!
* @brief This internal API is used to compensate the raw pressure data and
@@ -579,7 +637,7 @@
* @retval Compensated pressure data in integer.
*/
uint32_t compensate_pressure(const struct bme280_uncomp_data *uncomp_data,
- const struct bme280_calib_data *calib_data);
+ const struct bme280_calib_data *calib_data);
/*!
* @brief This internal API is used to compensate the raw humidity data and
@@ -592,7 +650,7 @@
* @retval Compensated humidity data in integer.
*/
uint32_t compensate_humidity(const struct bme280_uncomp_data *uncomp_data,
- const struct bme280_calib_data *calib_data);
+ const struct bme280_calib_data *calib_data);
#endif
@@ -633,8 +691,8 @@
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t set_osr_settings(uint8_t desired_settings,
- const struct bme280_settings *settings,
- const struct bme280_dev *dev);
+ const struct bme280_settings *settings,
+ const struct bme280_dev *dev);
/*!
* @brief This API sets the pressure and/or temperature oversampling settings
@@ -648,8 +706,8 @@
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t set_osr_press_temp_settings(uint8_t desired_settings,
- const struct bme280_settings *settings,
- const struct bme280_dev *dev);
+ const struct bme280_settings *settings,
+ const struct bme280_dev *dev);
/*!
* @brief This internal API fills the pressure oversampling settings provided by
@@ -683,8 +741,8 @@
* @retval zero -> Success / +ve value -> Warning / -ve value -> Error
*/
int8_t set_filter_standby_settings(uint8_t desired_settings,
- const struct bme280_settings *settings,
- const struct bme280_dev *dev);
+ const struct bme280_settings *settings,
+ const struct bme280_dev *dev);
/*!
* @brief This internal API fills the filter settings provided by the user