imp006 Pin Mux
The Functions Available From The imp006’s Pins
The imp006 provides an extensive array of GPIO and standard buses, including seven UARTs, four SPI buses and three I²C buses.
The module adopts the same pin nomenclature as the imp003. Squirrel code written to address pins and/or peripherals on other imps will require modification for use with the imp006.
Pin Mux
GPIO and peripheral functionality is organized into three groups of pins.
Pins A-W
| Pin | uart ABCD |
uart PQRS |
spi EFGH |
i2c JK |
i2c TU |
i2c LM |
PWM | ADC | DAC | Wake | State-change Callback |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | TX | ||||||||||
| B | RX | Yes | |||||||||
| C | RTS | ||||||||||
| D | CTS | ||||||||||
| E | COPI | Yes | |||||||||
| F | CIPO | Yes | Yes | ||||||||
| G | SCK | ||||||||||
| H | CS | Yes | |||||||||
| J | SCL | Yes | |||||||||
| K | SDA | ||||||||||
| L | SCL | ||||||||||
| M | SDA | ||||||||||
| N | Yes | Yes | |||||||||
| P | TX | ||||||||||
| Q | RX | ||||||||||
| R | RTS* | Yes | |||||||||
| S | CTS* | Yes | |||||||||
| T | SCL | Yes | Yes | ||||||||
| U | SDA | Yes | |||||||||
| V | Yes | Yes | |||||||||
| W | Yes | Yes | Yes |
* See Known Issues.
Pins XA-XW
| Pin | uart XEFGH |
uart XJKLM |
spi XABCD |
spi XPQRS |
spi XTUVW |
PWM | ADC | DAC | Wake | State-change Callback |
|---|---|---|---|---|---|---|---|---|---|---|
| XA | COPI | Yes | Yes | |||||||
| XB | CIPO | Yes | Yes | |||||||
| XC | SCK | Yes | Yes | |||||||
| XD | CS | Yes | Yes | |||||||
| XE | TX | |||||||||
| XF | RX | |||||||||
| XG | RTS* | Yes | ||||||||
| XH | CTS* | Yes | ||||||||
| XJ | TX | |||||||||
| XK | RX | |||||||||
| XL | RTS* | |||||||||
| XM | CTS* | Yes | ||||||||
| XN | Yes | Yes | ||||||||
| XP | COPI | |||||||||
| XQ | CIPO | |||||||||
| XR | SCK | |||||||||
| XS | CS | |||||||||
| XT | COPI | Yes | ||||||||
| XU | CIPO | |||||||||
| XV | SCK | |||||||||
| XW | CS |
* See Known Issues.
Pins YA-YN
| Pin | uart YABCD |
uart YEFGH |
uart YJKLM |
PWM | ADC | DAC | Wake | State-change Callback |
|---|---|---|---|---|---|---|---|---|
| YA | TX | |||||||
| YB | RX | |||||||
| YC | RTS* | |||||||
| YD | CTS* | Yes | ||||||
| YE | TX | |||||||
| YF | RX | |||||||
| YG | RTS* | |||||||
| YH | CTS* | Yes | ||||||
| YJ | TX | |||||||
| YK | RX | |||||||
| YL | RTS* | |||||||
| YM | CTS* | Yes |
* See Known Issues.
Notes
imp006 Identification
Call imp.info() — it returns a meta object with the property type, which is a string containing the imp module name:
if (imp.info().type == "imp006") {
// Code is running on imp006...
}
Note Please use imp.net.info() to determine the specific network interfaces attached to your imp006.
Default Pin States
All pins default to tristate (floating).
Reading Bus Names
Bus names prefixed with X or Y should be read with that prefix being applied to all of the subsequent pins included in the bus name, not just the first. For example, spiXPQRS indicates that this SPI bus uses pins XP, XQ, XR and XS, not pins XP, Q, R and S or pins X, P, Q, R and S.
CIPO is the signal previously referred to as MISO. COPI is the signal previously referred to as MOSI.
Pin Layout
The following figure shows the imp006 pinout top view:
Click for full-size image
DFSDM
Support for Digital Filter for Sigma-Delta Modulators (DFSDM) is available on pins P (DATA) and Q (CLOCK). For more information, please see the imp API DFSDM documentation.
Known Issues
UART Flow Control
Currently only uartABCD provides full flow control.
Other four-pin UARTs (uartPQRS, uartXEFGH, uartXJKLM, uartYABCD, uartYEFGH and uartYJKLM) do not yet provide flow control and must be used with the flag NO_CTSRTS. Flow control on these UARTs is expected to be added in a future version of impOS.