Issues programming my nRF51822 for the first time

RE: Issues programming my nRF51822 for the first time

Gilson — Tue, 04 Nov 2014 16:48:27 GMT

That helped with the issue. So I thought that "Erase All" from within Keil would erase the whole flash without having to go to nRFgo Studio.

RE: Issues programming my nRF51822 for the first time

Stian Røed Hafskjold — Tue, 04 Nov 2014 12:09:03 GMT

Are you able to use nRFgo studio to fully erase the chip, and then program the application hex-file through nRFgo Studio?

Also, try to do a full recovery with nrfjprog that came with nRFtools: "nrfjprog --recover"

I can confirm that the memory address settings should be IROM1: Start: 0x0 Size:0x40000 IRAM1: Start: 0x20000000 Size: 0x4000, for NO softdevice.

RE: Issues programming my nRF51822 for the first time

Nguyen Hoan Hoang — Mon, 03 Nov 2014 19:29:19 GMT

I think I see the problem. The module may have the S110 already flashed in and protected. You'll need the nRFGo to completely erase it first before you can load other programs to address 0.

RE: Issues programming my nRF51822 for the first time

Gilson — Mon, 03 Nov 2014 18:11:06 GMT

Thanks Nguyen,

I made some progress but still have a problem. For a quick and dirty test I built Blinky and I was trying to program the module without the S110. But After some attempts changing the SW mode all the way down to 100KHz and no progress I decided to try the build version nrf51822_xxaa_s110 and I was able to program the nRF. Please see below.

So why does it work with S110 and it does not without S110? it has to do with the memory setup then but I looked at my addresses and they seem right, can you please confirm?

for NO softdevice Blinky address settings are:

IROM1: Start: 0x0 Size:0x40000 IRAM1: Start: 0x20000000 Size: 0x4000

JLink info:

DLL: V4.94c, compiled Oct 31 2014 19:59:57 Firmware: J-Link ARM V7 compiled Jun 20 2012 19:45:53 Hardware: V7.00 S/N : 157001765 OEM : IAR

JLink Info: Found SWD-DP with ID 0x0BB11477
JLink Info: Found Cortex-M0 r0p0, Little endian.
JLink Info: FPUnit: 4 code (BP) slots and 0 literal slots ROMTableAddr = 0xE00FF003

Target info:

Device: nRF51822_xxAA VTarget = 3.377V State of Pins: TCK: 0, TDI: 0, TDO: 1, TMS: 0, TRES: 1, TRST: 0 Hardware-Breakpoints: 4 Software-Breakpoints: 8192 Watchpoints: 2 JTAG speed: 1000 kHz

Full Chip Erase Done. Programming Done. Verify OK. Application running ...

RE: Issues programming my nRF51822 for the first time

Nguyen Hoan Hoang — Mon, 03 Nov 2014 17:01:00 GMT

Make sure the setting is SW mode not Jtag mode. Try to lower down to 100KHz and work your way up. If you can't get it to work at very low speed, chances that you have a bad module is very high.

RE: Issues programming my nRF51822 for the first time

Gilson — Mon, 03 Nov 2014 16:07:06 GMT

I tried lowering to 1Mhz and to 100KHz same problem.

Target info:

Device: nRF51822_xxAA VTarget = 3.377V State of Pins: TCK: 0, TDI: 0, TDO: 1, TMS: 0, TRES: 1, TRST: 0 Hardware-Breakpoints: 4 Software-Breakpoints: 8192 Watchpoints: 2 JTAG speed: 1000 kHz

Erase Failed! Error: Flash Download failed - "Cortex-M0"

And if I unplug power from the device I get:

JLink info:

DLL: V4.92 , compiled Sep 30 2014 09:33:42 Firmware: J-Link ARM V7 compiled Jun 20 2012 19:45:53 Hardware: V7.00 S/N : 157001765 OEM : IAR

Error: Flash Download failed - Target DLL has been cancelled

RE: Issues programming my nRF51822 for the first time

Vebjørn — Mon, 03 Nov 2014 15:18:08 GMT

9600 kHz? I think i read somewhere that the clock speed shouldn't exceed 2 MHz.. maybe try lowering it.