RAM and ROM address initialization in Keil

RE: RAM and ROM address initialization in Keil

Simonr — Tue, 04 Jun 2019 11:21:12 GMT

What SoftDevice are you trying to flash now? For S110 (And probably S130, not tested to my knowledge) this post has been very helpful in the past. Please give the solutions suggested here a go. Otherwise, you could also try programming your chip with the Programmer app in nRFConnect for Desktop, where you can just drag and drop the .hex files and erase, read and write with the push of a button.

Best regards,

Simon

RE: RAM and ROM address initialization in Keil

samannaderip — Mon, 03 Jun 2019 15:52:48 GMT

Hi Simon,

Thanks much for your reply. I actually tried the SDK you mentioned, I can program the application but still cannot program the softdevice. Here is the process I go through:

I use an ARM Keil ULINK2 programmer and use it to program my nRF51822 module in SW mode. I use Keil uVision 5. I only connect SWCLK, SWDIO and GND between my nRF51822 and the programmer. The nRF51822 module is powered bu an external power supply. I leave the ROM and RAM start addresses as below:

ROM Start: 0x0 ROM Size: 0x40000

RAM Start: 0x20000000 RAM Size: 0x8000

Another thing to note is that, if I go under 'options for programmer' > debug > settings > 'Flash Download' and leave the 'Download Function' in 'Erase Sectors', the programmer even fails to erase the nRF51822. But when I set it to 'Erase Full Chip', during SoftDevice programming, it at least passes the erase step. But regardless, I get the same error as before: Error: Flash Download failed - "Cortex-M0". Just FYI, I use the below module by Adafruit:

https://www.adafruit.com/product/4076?gclid=EAIaIQobChMI65SExNXN4gIVDNlkCh2MBAdMEAQYASABEgK4vvD_BwE

RE: RAM and ROM address initialization in Keil

Simonr — Fri, 31 May 2019 08:15:57 GMT

You can download SDK version 12.3 from this link. I also suggest you download SoftDevice S130 as well for the features that are in Bluetooth 4.2, and a more updated SoftDevice in general. If the RAM and ROM values are incorrect, the SoftDevice should tell you what they should be set to in the output log.

Best regards,

Simon

RE: RAM and ROM address initialization in Keil

samannaderip — Thu, 30 May 2019 20:42:42 GMT

I actually could get it to work with nRF51422 (I used the DK) with the nRF51_SDK_10.0.0_dc26b5e SDK. I think the actual ptoblem is that I cannot fins an SDK for nRF51822. Please point me to a place to download the SDK for nRF51822.