This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the Vishay VCNL4200 Proximity and Ambient Light sensor.
IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.
- I2C connection at up to 400kHz
- Read Ambient Light Sensor data (raw ADC, milli-lux), Proximity sensor data (raw ADC), White light data (raw ADC)
- Set ALS data rate/integration time
- Set IRED current and duty cycle
- Interrupts: ALS and Prox. interrupt thresholds, interrupt persistence, interrupt mask (Prox.)
- Set Prox. ADC resolution (12, 16 bits)
- Set Prox. 'zero', or bias offset
- Sunlight cancellation/immunity
P1/SPIN1:
- spin-standard-library
- 1 extra core/cog for the PASM I2C engine (none if bytecode engine is used)
P2/SPIN2:
- p2-spin-standard-library
| Processor | Language | Compiler | Backend | Status |
|---|---|---|---|---|
| P1 | SPIN1 | FlexSpin (6.9.4) | Bytecode | OK |
| P1 | SPIN1 | FlexSpin (6.9.4) | Native/PASM | OK |
| P2 | SPIN2 | FlexSpin (6.9.4) | NuCode | OK |
| P2 | SPIN2 | FlexSpin (6.9.4) | Native/PASM2 | OK |
(other versions or toolchains not listed are not supported, and may or may not work)
- Ensure you power the VCNL4200's IR LED from a high current 5V source (>800mA); powering it via some boards' 5V outputs (e.g., from a Parallax FLiP's USB5V when connected to a PC USB port) isn't recommended. The high current draw can cause strange serial behavior and failure to load code to the Propeller.