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CC3220MODA: cannot get "printf" related info after downloading "AT_Command" demo codes

Part Number: CC3220MODA

Hello Champs,

After downloading "AT_Command" demo codes from CC32xx_SDK into the CC3220MODASF launchpad, there will be below "printf" info in on-board XDS1100 application COM port:

But after downloading the same codes into the CC3220MODASF board designed by customer, there is no such info in standalone XDS110 application COM port as below:

The customer's board is also using GPIO01 and GPIO02 as UART.

Would you please kindly help? Thanks!

Best Regards,

Linda

  • Hi Linda,

    What serial-to-USB device is being used? Is the module on the custom board booting? I suggest reviewing the hardware design checklist.

    You can also test the custom board by removing the RX and TX jumpers on your LaunchPad and wiring GPIO1 and GPIO2 to the top row of those pins. This should allow you to test the UART with the XDS110.

    Best regards,

    Sarah