Extra flash when emulating 52810 (to allow debugging with Optimization=none)

Question

I compiled and debugged the PCA10040e ANCS example (ie emulating the 52810 using the 52832) from SDK 15.3 - successfully. But I wanted to turn off code optimization to facilitate debugging. That seems to bring the solution over the flash size limit of the 52810. 
 How can I cheat and allow emulating the 52810 which (temporarily, for debugging) taking advantage of the 52832's larger flash ? 
 So after adding a debug configuration in the .emProject file via 
 <configuration Name="Debug" c_preprocessor_definitions="DEBUG; DEBUG_NRF" gcc_optimization_level="None"/> 
 I get ".text too large to fit in FLASH memory segment" during linking. So I tried to modify the 
 linker_section_placement_macros="FLASH_PH_START=0x0;FLASH_PH_SIZE=0x38000; 
 and bumped the FLASH_PH_SIZE a little (from 0x30000). It will link now, but the J-Link reports a "Error reported. Failed to download application. Generic error." 
 Any ideas ? How could I temporarily use more flash while emulating the 52810 ? 
 
 Thanks !

Shockel · Answer

This is what ended up working for me ... Create a file "SetupTarget.JLinkScript" in the project folder, with the following content: int SetupTarget(void) { JLINK_SetDevice("nrf52832_xxAB"); return 0; } JLink will call this function just before writing the flash, making it realize that the actual target is a nRF52832. (I tried changing the target via Project Options -> Debug -> Debugger, but that wreaked havoc with my .emProject file requiring manual cleanup. Apart from causing compile time errors with respect to use of the FPU.) The .emProject file then looks like this towards the file end: This gives you 512k of flash while emulating the nRF52810 allowing to debug without code optimization.

Extra flash when emulating 52810 (to allow debugging with Optimization=none)

Top Replies