nRF5 SDK V12.3 compiler problem

[ninesuntj]

Dear All. I have question about compiler of nRF5_SDK_V12.3. I compile the example BLE_peripheral\experimental_ble_app_blinky by gnu arm(latest version). It can work on nRF51 DK board. but when i download it to ISP130301. It couldn't work. the ISP130301 use the NRF51822 chips. if i use the arm compiler(keil) ,The firmware aslo can work on ISP130301.how can i solve such problem. i try to use gdb to debug it. but the the following error is display on the screen:

(gdb) load
Loading section .text, size 0x2e60 lma 0x1b000
Loading section .ARM.exidx, size 0x8 lma 0x1de60
Loading section .data, size 0x78 lma 0x1de68
Start address 0x1d854, load size 12000
Transfer rate: 5859 KB/sec, 4000 bytes/write.
(gdb) n
Single stepping until exit from function Reset_Handler,
which has no line number information.
SystemInit () at ../../../../../../components/toolchain/system_nrf51.c:72
72 if (is_manual_peripheral_setup_needed())
(gdb) n
89 if (is_peripheral_domain_setup_needed()){
(gdb) n
97 }
(gdb) n
0x0001d87c in Reset_Handler ()
(gdb) n
Single stepping until exit from function Reset_Handler,
which has no line number information.

Program received signal SIGTRAP, Trace/breakpoint trap.
0xfffffffe in ?? ()
(gdb) n
Cannot find bounds of current function

can anyone give some suggestion ? Thank you!

[bjorn-spockeli]

HI Li, 

note that SDK v12.3.0 uses GCC ARM Embedded 4.9 2015q3, see  nRF5 SDK v12.3.0 for the release notes. 

If downgrading your GCC version does not work, then try using Segger Ozone to debug the compiled code. 

Best regards

Bjørn 

[ninesuntj]

Hi bojorn-spockeli:    

    i use ozone to debug the compile code.  i set the break point at main(). then select debug ->download and reset target .but it couldn't stop at the breakpoint. how can i do in next step?

I review the schematic of this module. Then i find that the chip of module is nrf51822xxaa, but the chip of example for SDK is nrf5151422xxac. i check the datasheet. the aa chip only have 16k RAM. but ac chip have 32k ram. should i change the ld file about the example. could you give me some suggestion? 

Thank you!