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ACP-IMX6POS JCOM1 & JCOM2 set up

  • Document NO.

    2023103003
  • Category

    Software OS
  • Update Date

    2023-10-30
  • Rev.

    A1

Model Name

ACP-IMX6POS ACP-IMX6POS-B1

Purpose

Set up JCOM1 & JCOM2 for ACP-IMX6POS version A1 & B1

The way to set up JCOM1 & JCOM2 for ACP-IMX6POS A1:

$ echo 102 > /sys/class/gpio/export
$ echo 103 > /sys/class/gpio/export
$ echo 253 > /sys/class/gpio/export

$ echo out > /sys/class/gpio/gpio102/direction
$ echo out > /sys/class/gpio/gpio103/direction
$ echo out > /sys/class/gpio/gpio253/direction

RS485 RX
$ echo 0 > /sys/class/gpio/gpio102/value
$ echo 1 > /sys/class/gpio/gpio103/value
$ echo 0 > /sys/class/gpio/gpio253/value

RS485 TX
$ echo 0 > /sys/class/gpio/gpio102/value
$ echo 1 > /sys/class/gpio/gpio103/value
$ echo 1 > /sys/class/gpio/gpio253/value

Notice:
1. JCOM2 is using the same way as JCOM1 but the GPIO number is different.
2. RS485 is not auto direction.
3. Please follow below table to set up M0 & M1 for Loopback、RS232 and RS422, don’t need to set up flow.

The way to set up JCOM1 & JCOM2 for ACP-IMX6POS B1:

$ echo 102 > /sys/class/gpio/export
$ echo 103 > /sys/class/gpio/export

$ echo out > /sys/class/gpio/gpio102/direction
$ echo out > /sys/class/gpio/gpio103/direction

Loopback:
$ echo 0 > /sys/class/gpio/gpio102/value
$ echo 0 > /sys/class/gpio/gpio103/value

RS232:
$ echo 1 > /sys/class/gpio/gpio102/value
$ echo 0 > /sys/class/gpio/gpio103/value

RS485:
$ echo 0 > /sys/class/gpio/gpio102/value
$ echo 1 > /sys/class/gpio/gpio103/value

RS422:
$ echo 1 > /sys/class/gpio/gpio102/value
$ echo 1 > /sys/class/gpio/gpio103/value

Notice:
1. JCOM2 is using the same way as JCOM1 but the GPIO number is different.
2. RS485 set to auto direction.

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  • marine certified
  • marine pc

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