| Kernel driver isl29003 |
| ===================== |
| |
| Supported chips: |
| * Intersil ISL29003 |
| Prefix: 'isl29003' |
| Addresses scanned: none |
| Datasheet: |
| http://www.intersil.com/data/fn/fn7464.pdf |
| |
| Author: Daniel Mack <daniel@caiaq.de> |
| |
| |
| Description |
| ----------- |
| The ISL29003 is an integrated light sensor with a 16-bit integrating type |
| ADC, I2C user programmable lux range select for optimized counts/lux, and |
| I2C multi-function control and monitoring capabilities. The internal ADC |
| provides 16-bit resolution while rejecting 50Hz and 60Hz flicker caused by |
| artificial light sources. |
| |
| The driver allows to set the lux range, the bit resolution, the operational |
| mode (see below) and the power state of device and can read the current lux |
| value, of course. |
| |
| |
| Detection |
| --------- |
| |
| The ISL29003 does not have an ID register which could be used to identify |
| it, so the detection routine will just try to read from the configured I2C |
| address and consider the device to be present as soon as it ACKs the |
| transfer. |
| |
| |
| Sysfs entries |
| ------------- |
| |
| range: |
| 0: 0 lux to 1000 lux (default) |
| 1: 0 lux to 4000 lux |
| 2: 0 lux to 16,000 lux |
| 3: 0 lux to 64,000 lux |
| |
| resolution: |
| 0: 2^16 cycles (default) |
| 1: 2^12 cycles |
| 2: 2^8 cycles |
| 3: 2^4 cycles |
| |
| mode: |
| 0: diode1's current (unsigned 16bit) (default) |
| 1: diode1's current (unsigned 16bit) |
| 2: difference between diodes (l1 - l2, signed 15bit) |
| |
| power_state: |
| 0: device is disabled (default) |
| 1: device is enabled |
| |
| lux (read only): |
| returns the value from the last sensor reading |
| |
