CO2, humidity, and temperature sensor
Diff: SCD30.h
- Revision:
- 3:ca833b38050f
- Parent:
- 2:0d0174b46fd3
--- a/SCD30.h Fri May 07 13:06:14 2021 +0000 +++ b/SCD30.h Mon May 10 14:13:38 2021 +0000 @@ -23,7 +23,112 @@ Example: @code +#include "mbed.h" +#include "SCD30.h" +SCD30 mySCD30 ( I2C_SDA, I2C_SCL, SCD30::SCD30_ADDRESS, 100000 ); // I2C_SDA | I2C_SCL +Serial pc ( USBTX, USBRX ); // tx, rx + +DigitalOut myled ( LED1 ); +Ticker newAction; + + +//@brief Constants. + + +//@brief Variables. +volatile uint32_t myState; // State that indicates when to perform a new sample + + +//@brief FUNCTION PROTOTYPES +void changeDATA ( void ); + + +//@brief FUNCTION FOR APPLICATION MAIN ENTRY. +int main() +{ + SCD30::SCD30_status_t aux; + SCD30::SCD30_data_t mySCD30_Data; + + pc.baud ( 115200 ); + + myled = 1; + wait(3); + myled = 0; + + // It performs a software reset + aux = mySCD30.SCD30_SoftReset (); + wait_ms (2000); + + // It gets the firmware version + aux = mySCD30.SCD30_GetFirmwareVersion ( &mySCD30_Data.firmware ); + pc.printf ( "Version Major: %d, Version Minor: %d\r\n", mySCD30_Data.firmware.version_major, mySCD30_Data.firmware.version_minor ); + + // It sets two mesurement interval + mySCD30_Data.measurement_interval = 2U; + aux = mySCD30.SCD30_SetMeasurementInterval ( mySCD30_Data.measurement_interval ); + + // It configures the continuous automatic self-calibration + mySCD30_Data.asc = SCD30::CONTINUOUS_AUTOMATIC_SELF_CALIBRATION_ASC_ACTIVATE; + aux = mySCD30.SCD30_SetContinuousASC ( mySCD30_Data.asc ); + wait_ms(2000); + + // It sets the trigger without pressure compensation + mySCD30_Data.pressure_compensation = 0U; + aux = mySCD30.SCD30_TriggerContinuousMeasurement ( mySCD30_Data.pressure_compensation ); + + myState = 0UL; // Reset the variable + newAction.attach( &changeDATA, 5U ); // the address of the function to be attached ( changeDATA ) and the interval ( 5s ) + + // Let the callbacks take care of everything + while(1) { + sleep(); + + if ( myState == 1UL ) { + myled = 1U; + + // Trigger to get a new data set + aux = mySCD30.SCD30_TriggerContinuousMeasurement ( mySCD30_Data.pressure_compensation ); + + // Wait for a new data value + do { + aux = mySCD30.SCD30_GetDataReadyStatus ( &mySCD30_Data.status ); + wait_ms (100); + } while( mySCD30_Data.status == SCD30::GET_READY_STATUS_BIT_DATA_NO_READY ); + + // Get all the values + aux = mySCD30.SCD30_ReadMeasurement ( &mySCD30_Data.data ); + + // Send data through the UART + pc.printf ( "CO2: %d ppm, T: %d C, RH: %d %%\r\n", (uint32_t)mySCD30_Data.data.processed.co2, (uint32_t)mySCD30_Data.data.processed.temperature, (uint32_t)mySCD30_Data.data.processed.humidity ); + + // Reset the variables + myState = 0UL; + myled = 0U; + } + } +} + + +// @brief changeDATA ( void ) +// +// @details It changes myState variable +// +// @param[in] N/A +// +// @param[out] N/A. +// +// @return N/A. +// +// @author Manuel Caballero +// @date 07/May/2021 +// @version 07/May/2021 The ORIGIN +// @pre N/A +// @warning N/A. +void changeDATA ( void ) +{ + myState = 1UL; +} @endcode */ @@ -297,7 +402,7 @@ /** It calculates the I2C checksum calculation (CRC-8). */ uint8_t SCD30_CalculateI2C_CRC8 ( uint16_t seed ); - + I2C _i2c; uint32_t _SCD30_Addr; };