nRF51822 doesn't work with softdevice 8.0.0

[ben]

when i download the 7.0.0 softdevice and the demo project "Nordic\nrf51822\Board\pca10001\s110\experimental\ble_app_uart" to my nRF51822 board,it works well,but use the 8.0.0 softdevice and the demo project "nRF51_SDK_8.0.0_5fc2c3a\examples\ble_peripheral\ble_app_uart",it doesn't work,the phone app can't find the ble device,could you tell me what's the problem? tks.

[Susheel Nuguru]

have you changed IRAM and IROM settings? check this post

Did you also check the compatibility matrix to see if your hardware revision supports SD 8.0.0?

[ben]

thanks for you reply,I check the IRAM and IROM,it's correct,even when i use 7.0.0 softdevice with the 8.0.0 protject,change the IROM to 0x16000,my board can work,the app can find the ble device,but use 8.0.0 softdevice and the 8.0.0 project(IROM set to 0x18000),my boad can't work.I only want to use ble_app_uart with pairing pin,if I could use the 7.0.0 softdevice? I was told that it's
better to update to 8.0.0.thanks again!

[Susheel Nuguru]

Are you sure that you are flashing the right softdevice S110_v_8.0.0? can you start your debugger and put the breakpoint in the first line of the main and click run. If the breakpoint hits then it means that the problem is somewhere else. If it does not hit, then there are still problems with your IRAM and IROM settings

[ben]

I download the softdevice(s110_nrf51_8.0.0_softdevice.hex) on nordic web,i start the debugger and put the breakpoint in the first line of main and run,the breakpoint hits.when i start debug,the PC doesn't stop in the first line of the main.c(the PC value is 0x000006D0), and click reset button it also stop here,but the 7.0.0(softdevice and project) start debug,the PC pointer stop in the first line of the main.c(the PC value is 0x00016A80).