| .. zephyr:code-sample:: veml6046 |
| :name: VEML6046 RGBIR Color Sensor |
| :relevant-api: sensor_interface |
| |
| Get red, green, blue and IR light data from a VEML6046 sensor (polling |
| mode). |
| |
| Overview |
| ******** |
| |
| This sample measures the red, green, blue and IR light for all possible |
| combinations of sensor attributes. They are: |
| |
| - integration time |
| - effective photodiode size |
| - gain |
| |
| These attributes can be used to put the sensor in an optimal working area. |
| When the light value reaches the maximum raw value (0xFFFF), an error is |
| returned to indicate the out of bounds situation to the user program. |
| With this program the raw value is also printed out together with the |
| attributes to be able to select good attribute values. |
| Interrupt and trigger modes are not supported so far, but planned for future |
| development. |
| |
| Requirements |
| ************ |
| |
| This sample uses the VEML6046 sensor controlled using the I2C-2 interface of |
| the Olimex-STM32-E407 board on Feather connector pins PF0 and PF1. |
| |
| References |
| ********** |
| |
| - VEML6046: https://www.vishay.com/docs/80173/veml6046x00.pdf |
| - Application note: https://www.vishay.com/docs/80410/designingveml6046x00.pdf |
| |
| Building and Running |
| ******************** |
| |
| This project outputs sensor data to the console. It requires a VEML6046 |
| sensor to be connected to the desired board. |
| |
| .. zephyr-app-commands:: |
| :zephyr-app: samples/sensor/veml6046/ |
| :goals: build flash |
| :board: olimex_stm32_e407 |
| |
| |
| Sample Output |
| ============= |
| |
| .. code-block:: console |
| |
| Test all attributes for a good guess of attribute usage away of saturation. |
| Red: 68 lx ( 51) green: 68 lx ( 84) blue: 68 lx ( 51) IR: 68 lx ( 27) it: 0 pdd: 0 gain: 0 -- |
| Red: 121 lx ( 181) green: 121 lx ( 347) blue: 121 lx ( 240) IR: 121 lx ( 53) it: 0 pdd: 0 gain: 1 -- |
| Red: 215 lx ( 106) green: 215 lx ( 226) blue: 215 lx ( 160) IR: 215 lx ( 19) it: 0 pdd: 0 gain: 2 -- |
| Red: 201 lx ( 75) green: 201 lx ( 156) blue: 201 lx ( 112) IR: 201 lx ( 14) it: 0 pdd: 0 gain: 3 -- |
| [...] |
| Test finished. |
