Ryde GPIO Connections
RPi 4 GPIO pin out
- Note the RPi4 (only) can be powered with 5.2 v directly on Pins 2 and 4. Ground is Pins 6, 9, 14, 20, 25, 30, 34 and 39.
Ryde GPIO breakout PCB=
Full details and connections for the breakout PCB available from the BATC are here: Ryde GPIO breakout
GPIO Connections for the Ryde Receiver
Here is the initial list of GPIO connections. Note that there have been 2 changes since the first release (on 14 July 2020); the Up button has been moved from pin 12 to pin 8, and the band MSB from pin 35 to pin 10. The first Ryde Build release that works with the front panel buttons will reflect the mapping below.
Provision has been made for future updates to the Ryde to use I2C and SPI to communicate between the Raspberry Pi and the NIM.
| Pin No | BCM No | Wiring Pi | RPi Pri | RPi Alt0 | Primary Use | Secondary Use | Notes |
|---|---|---|---|---|---|---|---|
| 1 | - | - | 3.3v | - | - | - | - |
| 2 | - | - | 5v | - | - | - | - |
| 3 | 2 | 8 | GPIO 2 | SDA1 | - | - | Future NIM I2C |
| 4 | - | - | 5v | - | - | - | - |
| 5 | 3 | 9 | GPIO 3 | SCL1 | - | - | Future NIM I2C |
| 6 | - | - | 0v | - | - | - | - |
| 7 | 4 | 7 | GPIO 4 | GPCLK0 | Valid RX Signal | - | Active High |
| 8 | 14 | 15 | GPIO 14 | TXD0 | Button - Up | - | Active low |
| 9 | - | - | 0v | - | - | - | - |
| 10 | 15 | 16 | GPIO 15 | RXD0 | Band MSB D2 | - | - |
| 11 | 17 | 0 | GPIO 17 | FL1 | IR Sensor Input | Active low | |
| 12 | 18 | 1 | GPIO 18 | SPI6_CE0_N | - | - | Future 2nd TS |
| 13 | 27 | 2 | GPIO 27 | SD0_DAT3 | Button - Down | - | Active low |
| 14 | - | - | 0v | - | - | - | - |
| 15 | 22 | 3 | GPIO 22 | SD0_CLK | Button - Left | - | Active low |
| 16 | 23 | 4 | GPIO 23 | SD0_CMD | Button - Right | - | Active low |
| 17 | - | - | 3.3v | - | - | - | - |
| 18 | 24 | 5 | GPIO 24 | SD0_DAT0 | Button - Select | - | Active low |
| 19 | 10 | 12 | GPIO 10 | SPI0_MOSI | - | - | Future Pri TS |
| 20 | - | - | 0v | - | - | - | - |
| 21 | 9 | 13 | GPIO 9 | SPI0_MISO | - | - | Future Pri TS |
| 22 | 25 | 6 | GPIO 25 | SD0_DAT1 | Button - Back | - | Active low |
| 23 | 11 | 14 | GPIO 11 | SPI0_SCLK | - | - | Future Pri TS |
| 24 | 8 | 10 | GPIO 8 | SPI0_CE0_N | - | - | Future Pri TS |
| 25 | - | - | 0v | - | - | - | - |
| 26 | 7 | 11 | GPIO 7 | SPI0_CE1_N | Hardware Shutdown | - | Active low if enabled |
| 27 | 0 | 30 | ID_SD | SDA0 | Reserved | - | Not Available |
| 28 | 1 | 31 | ID_SC | SCL0 | Reserved | - | Not Available |
| 29 | 5 | 21 | GPIO 5 | GPCLK0 | Button - Menu | - | Active low |
| 30 | - | - | 0v | - | - | - | - |
| 31 | 6 | 22 | GPIO 6 | GPCLK2 | Button - Mute | - | Active Low |
| 32 | 12 | 26 | GPIO 12 | PWM0 | Band LSB D0 | - | - |
| 33 | 13 | 23 | GPIO 13 | PWM1 | Band NSB D1 | - | - |
| 34 | - | - | 0v | - | - | - | - |
| 35 | 19 | 24 | GPIO 19 | SPI6_MESO | - | - | Future 2nd TS |
| 36 | 16 | 27 | GPIO 16 | FL0 | Button - Power | - | Active low |
| 37 | 26 | 25 | GPIO 26 | SD0_DAT2 | Button - OSD Info | - | Active low |
| 38 | 20 | 28 | GPIO 20 | SPI6_MOSI | - | - | Future 2nd TS |
| 39 | - | - | 0v | - | - | - | - |
| 40 | 21 | 29 | GPIO 21 | SPI6_SCLK | - | - | Future 2nd TS |
Note that the GPIO pin names are markedly different from the RPi 3B. Each pin on the RPi4 GPIO can be referred to in many ways: its physical pin number, the Broadcom I/O number, the Wiring Pi number or the primary or alternate names. Source for GPIO designations was the Raspberry Pi 4 Model B datasheet.