• State Not Answered
  • Replies 4 replies
  • Subscribers 76 subscribers
  • Views 2097 views
  • Users 0 members are here
Attachments (0)
Nordic Case Info
  • Case ID: 254834
Options
This post is older than 2 years and might not be relevant anymore
More Info: Consider searching for newer posts

nrf52832 and USB functionality

LASHCA@PIETERSE

I have a custom PCB using the nrf52832. when flashing my PCB or connecting to the RTT terminal,  pins SWDCLK, SWDIO, VDD & GND are used.

i would like to know if theres a way of flashing and connecting to the RTT terminal via usb. Currently, my usb port is only used for charging.

Insights and advice would be much appreciated....Thanks. 

Parents
  • 0

    Hello!

    Did you make this PCB? There's definitely a way to do it through USB, just take as an example the nRF52 DK. But as a principle, you should've done this while projecting the board since making this change now can be a bit uncomfortable. That's of course if you didn't connect your USB to these pins before.

  • 0 in reply to Erick_s
    • Thanks for the response. I did not design the PCB but I am working with it now and want to make improvements. mainly, I want to be able to flash my pcb by using the USB port.
    • If I'm understanding you correctly... I could wire the SWDIO and SWDCLK to the USB port. From there on I could connect my nrf52 DK to the PCB via USB and flash the PCB? 
  • 0 in reply to LASHCA@PIETERSE
    LASHCA@PIETERSE said:
    If I'm understanding you correctly... I could wire the SWDIO and SWDCLK to the USB port. From there on I could connect my nrf52 DK to the PCB via USB and flash the PCB? 

     No, you need a programmer/debugger for this. On our development kits we have a on-board programmer(J-Link OB) that we use. See this link.

    LASHCA@PIETERSE said:
    I want to be able to flash my pcb by using the USB port

     Since you are only using the USB port for charging now, and since this is a nRF52832 (and not a nRF52840/nRF52833/nRF52820 that has on-chip USB support), I think you would need to redesign the PCB to achieve this. In order to flash the chip with fw over a USB port on the PCB, you would need either

    • A on-board programmer on the PCB(e.g. J-Link OB)
    • A USB-to-UART bridge chip(with a serial bootloader already flashed to the chip)
    • nRF52840/nRF52833/nRF52820 that has on-chip USB support(with a USB bootloader already flashed to the chip).
Reply
  • 0 in reply to LASHCA@PIETERSE
    LASHCA@PIETERSE said:
    If I'm understanding you correctly... I could wire the SWDIO and SWDCLK to the USB port. From there on I could connect my nrf52 DK to the PCB via USB and flash the PCB? 

     No, you need a programmer/debugger for this. On our development kits we have a on-board programmer(J-Link OB) that we use. See this link.

    LASHCA@PIETERSE said:
    I want to be able to flash my pcb by using the USB port

     Since you are only using the USB port for charging now, and since this is a nRF52832 (and not a nRF52840/nRF52833/nRF52820 that has on-chip USB support), I think you would need to redesign the PCB to achieve this. In order to flash the chip with fw over a USB port on the PCB, you would need either

    • A on-board programmer on the PCB(e.g. J-Link OB)
    • A USB-to-UART bridge chip(with a serial bootloader already flashed to the chip)
    • nRF52840/nRF52833/nRF52820 that has on-chip USB support(with a USB bootloader already flashed to the chip).
Children
No Data
Related
Terms of service