CC253X CC2540 (CC2530) going into Power mode

I'm not familiar with the sdcc compiler but it should have some documentation somewhere explaining how it implements the C language.  This document should also contain such things as compiler options and pragma options which it understands.  I suspec there is a pragma option to force alignment of code to a particular boundary.  If not, you may need to turn on an option to keep generated assembly files and then modify the generated assembly file to place a .ALIGN or some similar assembly directrive to force proper alignment.  Then you would merely use this modified assembly file for your code and not the C file (you may want to keep it for reference though).  You may also want to create a seperate C file with just this function in it so you can easily modify other functions and not have to recreate this assembly file over and over.

Jim Noxon

Okay, thank you both.

I could not find such pragma, but i tried to manually align the procedure placement then, because 
I did not thoroughly understand what Zafi wrote (I do not have much experience writing assembly)

My main.map file:

..................
 Hexadecimal

Area                               Addr   Size   Decimal Bytes (Attributes)

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

CSEG                               00E9   5D34 =  23860. bytes (REL,CON,CODE)

      Value  Global

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

  0C:00E9    _isr_tamper

  0C:00F4    _init_tamper_interrupt

  0C:011A    _init_sleep_mode

  0C:018C    _go_sleep

  0C:019C    _main

  0C:04B2    _zb_adhoco_recv_value

...........

018C % 4 = 0  Okay?

So in my C file i did:

.......

void init_sleep_mode(char a[]){

FCTL |= 0x04;//Flash cache enabled

if(a == "PM3"){

SLEEPCMD |= _BV(0);//PM3

SLEEPCMD |= _BV(1);}

if(a == "PM2"){

SLEEPCMD &= ~_BV(0);//PM2

SLEEPCMD |= _BV(1);}

if(a == "PM1"){

SLEEPCMD |= _BV(0);//PM1

SLEEPCMD &= ~_BV(1);}

__asm;

NOP

NOP

NOP

__endasm;

}

void go_sleep(void){ /* Enter Sleep mode defined by SLEEPCMD*/

P1SEL &= ~_BV(4);

P1SEL &= ~_BV(5);

P1DIR |= _BV(4) | _BV(5);

P1_4 = 0;

P1_5 = 0;

__asm;

MOV PCON, #0x01

NOP

RET

__endasm;

}

............

So everytime i changed main.c file i edited the .asm file to ensure the correct placement by adding NOPs at the end of init procedure...
Is it the right way?
Because i still measure 4 mA...

My design is according to the AN086 on board with the range enhancer CC2591...
any help is greatly welcome, because now my battery lasts only 24 hours with this system...

Thank You! 

Hi Sven,

The idea is to make sure that the instruction "MOV PCON, #0x01" (3-byte instruction)  is at an even address so that the NOP just after it is not on a 4-byte bondary.

What I suggested is to write an assembler file (go_sleep.S)  containing the following instructions:

PCON = 0x87             ;   Power Mode Control Register

.MODULE go_to_sleep
.GLOBL _go_sleep

.AREA HOME

; NOP                                          ; align to 2-byte boundary (even location)

_go_sleep:                                ; void go_sleep(void) {

  MOV PCON, #0x01                         ;   PCON = 0x01;    // halts CPU

  NOP                                          ;   NOP();
  RET                                          ; }

MOV has the same address as _go_sleep. If _go_sleep has an odd address, by removing the comment ";" before the NOP instruction above, _go_sleep is at an even address.

You can assemble this file and link it with your app in your makefile as per my pevious email (let me know if it's unclear).

In your main.c, you just declare

void go_sleep(void);

and call it wherever you need. It should stay at the same address when you change your main.c (just double-check in case).

Regards,

Zafi.

Hi, Thank you again


I cannot understand exactly what and where do i do and put these:

%.rel: %.S

CC = sdcc

CFLAGS = --model-large --xram-loc 0x0000 -I. -I../lib/ -I../lib/smoke/

AS       = sdas8051

ASFLAGS = --plosgff

all:

$(CC) $(CFLAGS) -c main.c -o ../lib/tmp/main.rel

$(CC) $(CFLAGS) -c ../lib/smoke/hw.c -o ../lib/tmp/hw.rel

$(CC) $(CFLAGS) -c ../lib/i2c.c -o ../lib/tmp/i2c.rel

$(CC) $(CFLAGS) -c ../lib/sx1502.c -o ../lib/tmp/sx1502.rel

$(CC) $(CFLAGS) -c ../lib/tmp103.c -o ../lib/tmp/tmp103.rel

$(CC) $(CFLAGS) -c ../lib/platform.c -o ../lib/tmp/platform.rel

$(CC) $(CFLAGS) -c ../lib/flash.c -o ../lib/tmp/flash.rel

$(CC) $(CFLAGS) -c ../lib/serial.c -o ../lib/tmp/serial.rel

$(CC) $(CFLAGS) -c ../lib/mtimer.c -o ../lib/tmp/mtimer.rel

$(CC) $(CFLAGS) -c ../lib/rf.c -o ../lib/tmp/rf.rel

$(CC) $(CFLAGS) -c ../lib/rf_mac.c -o ../lib/tmp/rf_mac.rel

$(CC) $(CFLAGS) -c ../lib/zb.c -o ../lib/tmp/zb.rel

$(CC) $(CFLAGS) -c ../lib/zb_control.c -o ../lib/tmp/zb_control.rel

$(CC) $(CFLAGS) ../lib/tmp/main.rel ../lib/tmp/platform.rel ../lib/tmp/flash.rel ../lib/tmp/serial.rel ../lib/tmp/mtimer.rel ../lib/tmp/rf.rel ../lib/tmp/rf_mac.rel ../lib/tmp/zb.rel ../lib/tmp/zb_control.rel ../lib/tmp/i2c.rel ../lib/tmp/sx1502.rel ../lib/tmp/tmp103.rel ../lib/tmp/hw.rel -o ../lib/tmp/main.ihx

objcopy --gap-fill 0xFF -I ihex -O binary ../lib/tmp/main.ihx $(PROGRAM_NAME)

chmod 755 $(PROGRAM_NAME)

Thanks!

I had to

AS       = asx8051

ASFLAGS = -plosgff 

But the principal remains the same... 
After all this doesn't change the outcome much, because there is something else on the circuit which sucks up the coulombs...