| Arduino Pins | BlackIce Usage |
|---|---|
| 0-7 | DIGITAL1 1-8 |
| 8-13 | DIGITAL2 1-6 |
| 14-19 (AN0-AN5) | ANALOG 1-6 |
| 20-23 | DIGITAL3 1-4 |
| also | Switches (S2,S1) |
| 24-25 (SDA,SCL) | DIGITAL2 9-10 |
| 26 | LED1 |
| also | ICE40 (SS) |
| 27-29 | LED2-LED4 |
| 40-41 | SPI Mux (S,OE) |
| 42-43 | ICE40 (CRST,DONE) |
| 44-45 | Buttons (S3,S4) |
| 46 | LED5 (SL1) |
analogRead is supported on pins AN0-AN5.
analogWrite is supported as PWM on pins 3, 4, 6, 11, 12, 18 19, and as 12-bit DAC on pins 5, 9.
| Name | Connections RX,TX |
|---|---|
| Serial | USB (middle connector) |
| Serial1 | CH340 USB (corner connector) |
| also | RPI 8,10 |
| also | ICE40 88,85 (PMOD1 3,4) |
| Serial2 | ICE40 82,81 |
| Serial3 | DIGITAL1 1,0 |
| Name | Connections MOSI,MISO,SCK |
|---|---|
| SPI | ICE40 config 68,67,70 |
| SPI1 | DIGITAL2 4,5,6 |
| SPI2 | DIGITAL3 4,3,2 |
| also | ICE40 37,38,39 |
Note: SPI pins are shared with onboard LEDs and PMOD14 (if mux OE=S=0). SPI2 pins are shared with onboard Switches S1-S2, and SD card.
| Name | Connections SCL,SDA |
|---|---|
| Wire | DIGITAL2 10,9 |
| also | RPI 5,3 |
| Wire1 | DIGITAL2 6,5 |
| Wire2 | ICE40 79,67 |
This package is an extension to Thomas Roell's grumpyoldpizza package, which provides the STM32L4 core.