| ARM Pin | mBed Pin | LPCXpresso Pin | Smoothieboard 1.0 | Smoothieboard 1.5 (Proposed) | Comment |
|---|---|---|---|---|---|
| P0.0 | P9 | 9 | i2c1 sda | i2c1 sda | All: Internal I2C bus. Used for digipots and port expander. |
| P0.1 | P10 | 10 | i2c1 scl | i2c1 scl | All: Internal I2C bus. Used for digipots and port expander. |
| P0.2 | USBTX | 21 | uart0 txd |
uart0 txd |
All: Used for ISP programming of the bootloader and for debugging. |
| P0.3 | USBRX | 22 | uart0 rxd |
uart0 rxd |
All: Used for ISP programming of the bootloader and for debugging. |
| P0.4 | P30 | 38 | alpha_en_pin | spare | 1.5: recommended for encoder Note: also is rs485 rd2 |
| P0.5 | P29 | 39 | alpha_dir_pin | spare | 1.5: recommended for encoder Note: also is rs485 td2 |
| P0.6 | P8 | 8 | spi1 ssel |
spi1 ssel |
All: sdcard |
| P0.7 | P7 | 7 | spi1 sck |
spi1 sck |
All: sdcard |
| P0.8 | P6 | 6 | spi1 miso |
spi1 miso |
All: sdcard |
| P0.9 | P5 | 5 | spi1 mosi |
spi1 mosi |
All: sdcard |
| P0.10 | P28 | 40 | beta_en_pin | spare uart1 txd |
1.5: connected to edison uart1 rxd Note: also i2c2 sda |
| P0.11 | P27 | 41 | beta_dir_pin | spare uart1 rxd |
1.5: connected to edison uart1 txd Note: also i2c2 scl |
| … | … | … | … | … | … |
NOTE: The italicized pins are hardcoded and would need to be changed in the source code (P0.2, P0.3, P0.6 - P0.9, P0.29, P0.30, P2.9, P2.10). The rest are soft configurable in config. v1.5 NOTES: The blue tagged pins have had their function changed for Smoothieboard v1.5
| Chip Pin | Module Pin | Breakout Pin | Arduino Pin | Smoothieboard 1.5 | Comment |
|---|---|---|---|---|---|
| GP109 | 55 | J17.11 | spi5 sck | ||
| GP110 | 53 | J18.10 | spi5 ssel a | ||
| GP111 | 51 | J17.10 | spi5 ssel b | ||
| … | … | … | … | … | … |
| FPGA Pin | Papilio Pin (One/Pro/Duo) | Zpuino Pin | Smoothieboard 1.5 | Comment |
|---|---|---|---|---|
| B1.40P | BH3 | P62 | mcu clkout | |
| B1.40N | osc in | - | osc in | |
| B2.1P | spi0 sck | main fpga spi slave port | ||
| … | … | … | … | … |