The RevPi Compact has three LEDs: one of them indicates the device status, two of them can be used freely. The free LEDs can be controlled by the status byte RevPiLED as follows:
LED | Signal | Meaning |
|---|---|---|
Power | green | RevPi Core running |
red | The piControl driver resets, the modules connected to the PiBridge are reinitialized. | |
A1 | off | In the “RevPiLED” byte, bits 0 and 1 are set to 0. |
green | In the “RevPiLED” byte, bit 0 is set to 1 and the bit 1 is set to 0. | |
red | In the “RevPiLED” byte, bit 0 is set to 0 and the bit 1 is set to 1. | |
orange | In the “RevPiLED” byte, bits 0 and 1 are set to 1. | |
A2 | off | In the “RevPiLED” byte, bits 2 and 3 are set to 0. |
green | In the “RevPiLED” byte, bit 2 is set to 1 and bit 3 is set to 0. | |
red | In the “RevPiLED” byte, bit 2 is set to 0 and bit 3 is set to 1. | |
orange | In the “RevPiLED” byte, bits 2 and 3 are set to 1. |
In the section “How to Use Status Bytes” we explain how this basically works.
Alternatively you can control the LEDs without using piControl. Here you can see how this works.