Bootloader v1.3 (Fixed version in date 2023-02-28 from Mr.Germano)
your iMX7 WinCE7 Image 1.3 (official image)
We are using the UARTA and UARTB without any problem them transmit and receive correctly.
I have problem on UARTC that not transmit nothing.
I have try the setting on wince registry following the post below but without success:
I have delete the key “colibripin_21” saving the registry, but after the reboot the key is
already present on the registry.
In addiction, I have follow the post below:
adding the [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\USB_OTG1] with all keys from the post
and deleting completly the [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\USBOTG]
but after the reboot the [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\USBOTG] is again present.
Do you have a working fix for have the UARTC working completly?
Inform me asap
Hi, I’m the Toradex AI Assistant. The Toradex Support team will follow up with you shortly!
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Hello,
Thank you for reaching out with your issue regarding the UARTC port on your iMX7 SOM running WinCE7. Let’s work through some steps to help resolve this problem.
Hardware Verification: First, ensure that all hardware connections for UARTC are secure and correctly configured. Check the TX and RX lines for any loose connections or potential damage.
Registry Settings: It seems you’ve already attempted registry modifications. In WinCE, registry changes can sometimes revert after a reboot if not saved properly. After making changes, ensure you save the registry by using the appropriate tool or command to persist these changes across reboots.
Driver and Configuration: Verify that the UARTC driver is correctly installed and configured. Ensure that your application is using the correct COM port and that there are no conflicts with other devices. Double-check the driver settings in the registry to ensure they match your hardware setup.
Testing with a Simple Application: Use a basic terminal application to test UARTC functionality. This can help determine if the issue lies with the hardware, driver, or your specific application.
Debugging and Logs: Utilize any available debugging tools or logs to identify error messages or warnings related to UARTC. This can provide further insight into the issue.
If these steps do not resolve the problem, consider any recent changes to your system that might have affected UARTC functionality. Additional details or specific error messages could also assist in diagnosing the issue further.
I hope these suggestions help you get UARTC working as expected. Please feel free to reach out if you have more questions or need further assistance.
Best regards,
Toradex AI Assistant
Please, also check if these links can help you solve your problem:
Sorry for the late answer i was on a long leave and nobody else could answer this question.
The issue is most for sure that Pin21 is configured as Overcurrent Detect instead of UART.
This is a wrong default in the USB OTG port setting that will use this pin as Overcurrent detect by default.
You need to set “colibripin_21” to 0, not delete the entry to make it work. I did some tests and for me it will stay at 0 (UART). We will fix this not to default to this pin in a future release of the iMX7 BSP
Hello Mr.Germano,
like your suggestion, I have set the registry
[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\USBOTG\Hcd\Pinout_Default]
colibripin_21=0
The result is that the registry field remain identical after the reboot, but the UART C continue
to not trasmit nothing on pin 21.
I have check it directly with oscilloscope on the hardware, but nothing happen.
To be sure I have check the other pin 19 but the same result.
Can you check the UART pins alternate function assignment in GPIO Tool? to make sure they are configured as uart3_RX_DATA (pin 21) and uart_TX_DATA (pin 19)
