Error in Linker script setup for SD110 v8, SDK v8.1

RE: Error in Linker script setup for SD110 v8, SDK v8.1

chalecampb — Wed, 20 May 2015 22:09:54 GMT

OK. Everything I did was correct, but the .ld file that I had copied into my project directory and modified, somehow un-modified itself, so it wasn't actually using any of the values I entered. I am not even sure how that happened.

Thanks Anshul for the help.

RE: Error in Linker script setup for SD110 v8, SDK v8.1

chalecampb — Wed, 20 May 2015 20:10:04 GMT

Hi,

This also doesn't work. See output here - paste.ofcode.org/SskDupXwQCBCSaeJEKPrbZ

Also, how did you get to the 0x2000 value for the RAM length? I am reading nRF51822 S110 SoftDevice Specification - v3.1, which was updated to cover the S110 v8 soft device. Page 34, it states that the RAM for the SD (MBR) starts at 0x20000000 and ends at APP_RAM_BASE - which is 0x20002000. The rest belongs to the application, AFAIK - so, up until 0x20000000 + 0x8000. This length is from 0x2000 to 0x8000, or 0x6000. Why would it be only 0x2000 in your example?

Also, while the numbers are correct, 88kB for SD v8 sounds incorrect. If I flash it through nRFgo Studio, it says 96kB - which is 0x18000 start address. Was that just an outdated comment?

Thanks, -Alex

RE: Error in Linker script setup for SD110 v8, SDK v8.1

Anshul — Wed, 20 May 2015 19:46:59 GMT

Hi Alex,

Yes, the SD v8 and SDK v8.0 are compatible . The memory map settings are FLASH (rx) : ORIGIN = 0x00018000, LENGTH = 0x28000 /* 96 kB is taken by S110, 160 kB available for application. */ SRAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x02000 / 8 kB, 8 kB is taken by S110. */ You need to change the Length of RAM to 0x2000

I had not updated the comment, it was referring to the previous version of the SD. From your screenshot, it looks like that you are trying to erase the memory while programming the hex file. But you should not do that. After programming the soft device, you need to just set the speed, enable writing and write to the address 0x00018000

device nrf51822 speed 1000 w4 4001e504 1 loadbin $(BUILD)/$(PROJECT).bin 0x00018000 r g exit

Hope it resolves your issue.

Anshul

RE: Error in Linker script setup for SD110 v8, SDK v8.1

Anshul — Wed, 20 May 2015 19:46:29 GMT

Hi Alex,

Yes, the SD v8 and SDK v8.0 are compatible . The memory map settings are FLASH (rx) : ORIGIN = 0x00018000, LENGTH = 0x28000 /* 88 kB is taken by S110, 168 kB available for application. / SRAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x02000 / 8 kB, 8 kB is taken by S110. */

You need to change the Length of RAM to 0x2000