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CC2640R2F: How to detecte GPIO state to enter PTM on WCSP package?

Aichi Chen
Expert 1580 points
Part Number: CC2640R2F

Hi,

My customer based on this link to add PTM feature into project.

C:/ti/simplelink_cc2640r2_sdk_5_30_00_03/docs/blestack/ble_user_guide/html/ble-stack-3.x/creating-a-custom-bluetooth-low-energy-application.html

chapter "Using Production Test Mode (PTM)"

Basically the PTM mode is working on CC2640R2F launchpad. We use DIO4 to switch PTM/SimplePeripherial example and success on launchpad.

Then we added WCSP configuration to test on launchpad DIO4 (Connect DIO4 to GND to pull low then reset).

But it always enter PTM mode, not able to SWITCH mode via DIO4 as expected.

Any idea how to let it work on WCSP package and verified on launchpad?

CODE:

  • 0
    TI__Expert 3740 points

    Hi,

    Thanks for reaching out! We will look into this and get back to you shortly. To help us better support you, could you confirm you are currently using SDK 5.30 and share what example project, if any, is being used for testing?

    Best regards,

    Luke

  • 0 in reply to Luke
    Expert 1580 points

    Yes, we are using SDK 5.3 example project just simpleperipherial example in ble folder.

  • 0 in reply to Aichi Chen
    TI__Guru** 101450 points

    Hi Aichi,

    For sanity, could you please confirm using the debugger to check whether the GPIO_read() function executed in the code snippet you have shared always returns 0?

    Assuming the GPIO_read() function always returns 0, please verify the configuration of the GPIO and the hardware design on this pin.

    Best regards,