Minimalistic evaluation board for the SX1255 RF transceiver chip, with PMOD connectors.
Remember to provide a clock signal at the PMOD REF pin or EXT_REF SMA connector. The source is selectable with a jumper. A range of clock frequencies can be used, see the SX1255's documentation for details.
| PMOD pin name | RPi header pin number |
|---|---|
| VCC | 1 (3.3V) |
| OUT | 12 (GPIO18) |
| MOSI | 19 (SPI_MOSI) |
| MISO | 21 (SPI_MISO) |
| RST | 22 (GPIO25) |
| SCK | 23 (SPI_CLK) |
| /CS | 24 (SPI_CE0_N) |
| IO2 | 35 (GPIO19) |
| I_OUT | 38 (GPIO20) |
| GND | 39 (GND) |
| I_IN | 40 (GPIO21) |
Sample Raspberry Pi code for SX1255 control can be found here. I2S slave overlay is required.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
