BL i.MX8MM (N801x S)#
Board Layout and Connectors#
IOs#
Four digital inputs/outputs (either or) are available.
The table below shows number and function of available DIOs and their associated GPIOs.
The input/output voltage is coupled to the power supply voltage (normally 24 volts).
| DIO Name | Direction | GPIO Name | GPIO Device | GPIO Offset | Connector |
|---|---|---|---|---|---|
| DIO1 | output | GPIO1_IO03 |
gpiochip0 | 3 | X13 - Pin 1 |
| DIO1 | input | GPIO1_IO06 |
gpiochip0 | 6 | X13 - Pin 1 |
| DIO2 | output | GPIO1_IO07 |
gpiochip0 | 7 | X13 - Pin 3 |
| DIO2 | input | GPIO1_IO08 |
gpiochip0 | 8 | X13 - Pin 3 |
| DIO3 | output | GPIO1_IO09 |
gpiochip0 | 9 | X13 - Pin 5 |
| DIO3 | input | GPIO1_IO10 |
gpiochip0 | 10 | X13 - Pin 5 |
| DIO4 | output | GPIO1_IO011 |
gpiochip0 | 11 | X13 - Pin 7 |
| DIO4 | input | GPIO5_IO02 |
gpiochip4 | 2 | X13 - Pin 7 |
For an example on how to use or work with the DIOs see section "Using the System" for more information.
Serial Devices#
Below you will find an overview which serial device has which name in the OS and belongs to which UART device of the iMX8 CPU.
| UART | Type | Accessible via | Connector |
|---|---|---|---|
| UART 1 | RS232 | /dev/ttymxc0 |
X11 |
| UART 2 | RS485 | /dev/ttymxc1 |
X12 |
| UART 3 | UART/TTL (Debug UART) | /dev/ttymxc2 |
X3 (USB Mini-B) |
For an example on how to use the serial devices see section "Using the System" for more information.
CAN-Bus Interface#
The BL i.MX8MM (N801x S) has one CAN-Bus interface. The device is present after boot, but is not enabled by default.
| Name | Accessible via | Connector |
|---|---|---|
| CAN | can0 |
X12 |
For an example on how to use the CAN-Bus see section "Using the System" for more information.