[Tinyos-help] Read/write registers of CC2420 with Boomerang

[Ole Bischoff]

Hi,

I'm using Boomerang and TelosB and want to read/write some
registers of the CC2420. I know that I can use the functions of
the CC2420Control-interface, but I really would like to know how
the resource handler works. So I wrote a little module that increases
the RF-power of the radio and displays the value on the LEDs.
My program should work like a simple 3-bit counter (Blink example),
but when I start it on my tmote the default RF-power value (0x1F)
is displayed on the LEDs. When I change line37 of RegCC2420M.nc 
to "call Radio.SetRFPower(rh, m_value) " the whole thing works fine.
Perhaps someone can help me with this problem a.k.a. resource handler.

Best regards,
                    Ole Bischoff

RegCC2420.nc
01 configuration RegCC2420 {
02 }
03 implementation {
04   components Main
05     , RegCC2420M
06     , TimerC
07     , LedsC
08     , CC2420RadioC
09     , HPLCC2420C;
10    
11   components new CC2420ResourceC() as RadioResource;
12
13   Main.StdControl -> TimerC;
14   Main.StdControl -> RegCC2420M;
15  
16   RegCC2420M.TimerRFPower -> TimerC.Timer[unique("Timer")];
17  
18   RegCC2420M.Resource -> RadioResource.ResourceCmdAsync;
19  
20   RegCC2420M.HPLRadio -> HPLCC2420C.HPLCC2420;
21   RegCC2420M.Radio -> CC2420RadioC.CC2420Control;
22
23   RegCC2420M.Leds -> LedsC;
24 }

RegCC2420M.nc
01 module RegCC2420M {
02   provides {
03     interface StdControl;
04   }
05   uses {
06     interface Leds;
07     interface Timer as TimerRFPower;
08     interface CC2420Control as Radio;
09     interface HPLCC2420 as HPLRadio;
10     interface ResourceCmdAsync as Resource;
11   }
12 }
13 implementation {
14
15  /************************* VARIABLES *******************************/
16   uint8_t m_value = 3;
17  
18  /************************* STD CONTROL *****************************/
19   command result_t StdControl.init() { return SUCCESS; }
20
21   command result_t StdControl.start() {
22     call TimerRFPower.start( TIMER_REPEAT, 1000 );
23     return SUCCESS;
24   }
25
26   command result_t StdControl.stop() {
27      return SUCCESS;
28   }
29
30  /************************* TIMER ***********************************/
31   event result_t TimerRFPower.fired() {
32      call Resource.request(RESOURCE_NONE);
33      return SUCCESS;
34   }
35
36   async event void Resource.granted(uint8_t rh) {
37      call HPLRadio.write(rh, CC2420_TXCTRL, m_value);
38 
39      call Leds.set(call Radio.GetRFPower()/4); 
40 
41      if (m_value == 31) {
42        call TimerRFPower.stop();
43        call Leds.set(0);
44      }
45 
46      m_value += 4;
47 
48      call Resource.release();
49   }
50 }
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