nrf52840 flashing

RE: nrf52840 flashing

Jørgen Holmefjord — Thu, 30 Mar 2017 07:00:47 GMT

You may need some configuration of the newly connected device. I suggest that you post this as a separate question, as it does not relate to the initial question. This makes the questions and answer more searchable and keeps the site clean. I also suggest that you provide some more details on your issue, preferably with some code examples.

RE: nrf52840 flashing

madhu — Tue, 28 Mar 2017 08:10:18 GMT

I have connected a radio transceiver which is interfaced through spi. And my target is to read the device registers which are 8bit addressed @16MHz Clock. I have just changed read length to 4 and also commented configure_memory and spi_erase apis in qspi example code. I have observed that "nrf_qspi_event_check" api is waiting for the event ready, which is causing the continuous read operation.

RE: nrf52840 flashing

Jørgen Holmefjord — Tue, 28 Mar 2017 08:01:40 GMT

Which slave device did you connect? Did you edit the code to send commands supported by the device?

RE: nrf52840 flashing

madhu — Mon, 27 Mar 2017 16:00:04 GMT

Thanks Holmefjord.
By changing so i am able to flash it well. Next i loaded qspi periperal example with an external slave device connected to gpio pins to which qspi is shorted. In the main function i modified the code to perform read and write operations only one time. But on executing i'm seeing clock transfer continuously.

Why it is happening so, you have any idea?

Thanks and Regards. R Madhu.

RE: nrf52840 flashing

Jørgen Holmefjord — Mon, 27 Mar 2017 11:37:00 GMT

Hi,

By setting MemSize = 0x000000 in QspiDefault.ini, found in the nrfjprog install directory (typically C:\Program Files (x86)\Nordic Semiconductor\nrf5x\bin), you should be able to flash your device without QSPI.

Best regards,

Jørgen