read/write external flash(GD25Q16E) fail with QSPI

RE: read/write external flash(GD25Q16E) fail with QSPI

user2111 — Tue, 14 Jun 2022 12:29:39 GMT

Can you try to do a restart of your computer, and don't start up any other program on your pc, but only try to run the nrfjprog command? Are you sure you have connected both gnd, vdd, swdio and swdclk.

Kenneth

RE: read/write external flash(GD25Q16E) fail with QSPI

user116085 — Tue, 14 Jun 2022 10:24:14 GMT

Hi Kenneth,

update first:

C:\Users\Gavin>nrfjprog --version
nrfjprog version: 10.15.2 external
JLinkARM.dll version: 7.58b

C:\Users\Gavin>nrfjprog --memrd 0
ERROR: Unable to connect to a debugger.
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.

'nrfjprog --qspieraseall' and 'nrfjprog --readqspi filename' both fail.

Although this problem(Unable to connect to a debugger) occurs, Jlink is workable in SEGGER IDE.

Is it weired? what is the different between jlink and nrfprog?

Best regards,

Gavin

RE: read/write external flash(GD25Q16E) fail with QSPI

user2111 — Tue, 14 Jun 2022 06:55:58 GMT

That error sounds like a more generic error with the connection between jlink and nRF52. Does any other nrfjprog command work? E.g. how about just reading internal flash of the nRF52 using nrfjprog --memrd 0

What does it say if you call nrfjprog --version

If you are able to read using nrfjprog --memrd 0, then it sounds to be a error of the qspi interface yes. Though you can run the qspi commands on an DK for comparison also.

Though you have not told me if the 'nrfjprog --qspieraseall' and 'nrfjprog --readqspi filename' did succeed.

Best regards,
Kenneth

RE: read/write external flash(GD25Q16E) fail with QSPI

user116085 — Tue, 14 Jun 2022 01:16:02 GMT

Hi Kenneth,

I tested on our pcb and got these log.

C:\Users\Gavin>nrfjprog --memrd 0x12000000
ERROR: Unable to connect to a debugger.
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.

Does it mean QSPI interface not correct?

Best regards,

Gavin

RE: read/write external flash(GD25Q16E) fail with QSPI

user2111 — Mon, 13 Jun 2022 10:50:31 GMT

Looks like it:

The QSPI flash will be mapped from memory location starting from 0x12000000.

Kenneth

RE: read/write external flash(GD25Q16E) fail with QSPI

user116085 — Mon, 13 Jun 2022 02:12:38 GMT

Hi Kenneth,

Could you also provide writing cmd?

Best regard,

Gavin

RE: read/write external flash(GD25Q16E) fail with QSPI

user2111 — Fri, 10 Jun 2022 11:43:20 GMT

I suggest you play around and test a bit with nrfjprog command line to interface your qspi flash first to ensure that it's electrically correct before you start with the code development.

For instance you can find there is both an 'nrfjprog --qspieraseall' and 'nrfjprog --readqspi filename' that can be used. Note however that you may need to adjust C:\Program Files (x86)\Nordic Semiconductor\nrf-command-line-tools\share\QspiDefault.ini file in a text editor to fit with your hardware layout.

For instance in the .ini file I suggest you try with Frequency = M2

Remember to take a copy of the .ini file.

Best regards,
Kenneth

RE: read/write external flash(GD25Q16E) fail with QSPI

user116085 — Fri, 10 Jun 2022 05:15:08 GMT

Hi Nordic,

I found nrfjprog can be used to read/write external MX25R6435F QSPI flash.

Is it also workable for GD25Q16E?

Does the nrfjprog use page program(cmd: 0x02) to write data ?

Best Regard,

Gavin