CC2640R2F: How to use a variable defined using #pragma

Hi Roshini,

Are you using CCS or IAR? Also, could you show me snippets from your code on how you declare and use the variable?

Hi Edward,

Im using CCS and im working on OAD code.

In bootloader,
#pragma location = BIM_VAR_ADDR
#pragma NOINIT(_bim_var)
uint32_t _bim_var;

_bim_var= 0x101;

In downloader,
Display_print1(dispHandle,0,10,"BIM VARIABLE:%d", _bim_var);

When I use it in downloader.c (downloader) with UART serial the code gets hung after printing the value once. But when I remove UART the code seems to be working fine without any issue. Or when i re assign a value to _bim_var and use it, the code works fine.
Eg:
_bim_var= 0x101; //0x102
Display_print1(dispHandle,0,10,"BIM VARIABLE:%d", _bim_var);

Why is this occuring?

Your pragma location doesn't look right. I think it should be on the format

#pragma LOCATION( x , address )
int x

Hi Edward,

I don't think that's the issue. The _bim_var is defined in the same manner in the example code (simple_peripheral_oad_onchip).

Also I tried the above method as you suggested. I still get the same behaviour. Could you help me with this issue?

Thanks,

Roshini R

Could you provide a minimal code example that reproduces this issue, as I'm unable to reproduce this.

I'm not sure what you are trying to do. Could you elaborate?

Hi Edvard,

Im just trying to display a message based on the _bim_var value;

Consider this,

Example 1

---------------

int temp1;

Display_print0(dispHandle,0,0,"==============================");

const char* bimcode[] = {"Hard Reset", "Downloader Restart", "APP Start", "Bad APP Header", "Bad CRC"};

temp1=3;

Display_print1(dispHandle,0,0,"Down Loader:%s", bimcode[temp1]);

OUTPUT:

==============================

Down Loader:Bad APP Header

Example 2

-----------------

uint32_t _bim_var;

int temp1;

Display_print0(dispHandle,0,0,"==============================");

const char* bimcode[] = {"Hard Reset", "Downloader Restart", "APP Start", "Bad APP Header", "Bad CRC"};

 Display_print1(dispHandle,0,0,"BIM VARIABLE:%d", _bim_var); // Value of _bim_var is 258 (Set in bootloader code previously)

temp1=_bim_var-255; 

Display_print1(dispHandle,0,0,"TEMP1:%s", temp1); // Value of temp1 printed as 3

Display_print0(dispHandle,0,0,"Rest of the code");

OUTPUT:

==============================

BIM VARIABLE:258

TEMP1:3

Rest of the code

Example 3

-----------------

uint32_t _bim_var;

int temp1;

Display_print0(dispHandle,0,0,"==============================");

const char* bimcode[] = {"Hard Reset", "Downloader Restart", "APP Start", "Bad APP Header", "Bad CRC"};

 Display_print1(dispHandle,0,0,"BIM VARIABLE:%d", _bim_var); // Value of _bim_var is 258 (Set in bootloader code previously)

temp1=_bim_var-255; 

Display_print1(dispHandle,0,0,"TEMP1:%s", temp1); // Value of temp1 printed as 3

Display_print1(dispHandle,0,0,"Down Loader:%s", bimcode[temp1]); // Code hangs indefinitely because of this line but if removed code works fine

Display_print0(dispHandle,0,0,"Rest of the code");

OUTPUT:

==============================

Only the above line printed

I cant figure out the issue. Why is this happening?

Thanks,

Roshini Radhakrishnan

Could you post the entire code snippet that causes this issue? I feel like there some context you're not showing here.