Hello Toradex Community,
I am working with the Colibri Evaluation Board v3.2B, equipped with a Colibri IMX7D 1GB System on Module. My goal is to run Debian OS on the ARM Cortex-A7 processor and an RTOS on the ARM Cortex-M4. I am following the setup instructions provided at Toradex Developer: FreeRTOS on the Cortex-M4 of a Colibri iMX7, but I’m encountering issues when trying to connect to the UART_B for the Cortex-M4 processor debug console.
Here’s my current setup:
- UART-A Connection: I’m using a USB-B to USB-A cable connected from port X27 on the Colibri Evaluation Board to my MacBook. All jumpers are set as described in the Configuring Serial Port Debug Console documentation. I can successfully connect to the Cortex-A7 processor’s serial port using
screen /dev/tty.usbserial-A10MWGNJ 115200
. Note: this path is slightly different from the one mentioned in the UART on Linux documentation. - UART-B Connection: I have connected the RS-232 Top on X25 on the Colibri Evaluation Board using the Null Modem Cable (RS232), which then connects to a DB9-Male to USB-A cable from the Carrier Board Accessory Kit v1.1c. This cable is plugged into my laptop. However, I am unable to detect the USB device when running
ls /dev/tty*
.
I am wondering if there might be an issue related to the jumper configuration for JP19, JP20, JP17, and JP21 that is affecting UART-B connectivity.
Additionally, I would like to confirm if the DB9-Male to USB-A cable provided in the accessory kit is indeed capable of supporting data transfer when used with the Null Modem RS-232 cable?
Any guidance or suggestions to resolve these connectivity issues would be greatly appreciated. Thank you in advance for your support!