Re: [Tinyos-help] Help me with power range and signal strength!
Many users (including me) have had no success using the CC1000Control interface and the setRFPower commands. The way I did it was to edit the CC1000Control.h file in /tos/system/platforms/mica2. Ive forgotten the excat location now but there is a 2-D array called PARAM..something somewhere. In the xxxMhz array (xxx is the radio freq of the motes u are using..there is a seperate array for each type of freq) change the value of the PA_POW variable. (this is a register in the CHIPCON chip that can be used to adjust the transmitter power). By default it is 0xff on MICA2 motes. When i changed it to 0x00 i got a range of about 4-6 feet in an indoor lab environment.
On 6/28/06, Rahul Sawant [EMAIL PROTECTED] wrote:
Hi
Use the formula on pg 28 of this document.
http://www.xbow.com/Support/Support_pdf_files/MPR-MIB_Series_Users_Manual.pdf
also u have declared data in MyMsg to be an array of size 18 ie it runs from 0 to 17 and u r using
data[18] is it right just check that.
Rahul
On 6/27/06, Hieu Tran
[EMAIL PROTECTED] wrote:
Hi all!
I searched in the archieves and found some of the topics that disscuss about power range however I still have problem with it.
in the CC1000ControlM at the line:
// Set default parameter values // POWER 0dbm gCurrentParameters[0xb] = ((8 CC1K_PA_HIGHPOWER) | (0 CC1K_PA_LOWPOWER)); call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
I guess I can make a change to power range here so I make change :
gCurrentParameters[0xb] =1;//I want to change to the minimum power range call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
After that I recompile my program and run it. However It seems that my change does not go in to effect (the range is still large).
Can you tell me the correct way to make the change to the power range?
I have one more question about signal strength.
I made the change at the TOS_Base, I try to read the signal strength from TOS_Msg
event TOS_MsgPtr RadioReceive.receive(TOS_MsgPtr Msg) {
cmd= (struct MyMsg *)Msg-data;
temp1 = (int8_t) (((Msg-strength)8) 0xF);//take 8 MSB
cmd-data[17] = temp1;//put in to packet at data[17]temp2 = (int8_t) ((8(Msg-strength)) 0xF);//take 8 LSBcmd-data[18] = temp2;//put in ton packet at data[18]
..
Here is MyMsg structure:
typedef struct MyMsg { uint16_t seqno; int8_t action; uint16_t source; uint8_t hop_count; uint16_t destaddr; int8_t data[18];} MyMsg;
After that, I use Listen program to read signal strength value, however all the times these values are always 0 or 1 (convert to decimal number). Can anyone tell me is this a correct way to receive signal strength? If correct, how canconvert this value to dBm?
many thanks!
Tran!
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Fwd: [Tinyos-help] Help me with power range and signal strength!
-- Forwarded message --From: Aditya Bhave [EMAIL PROTECTED]Date: Jun 29, 2006 12:42 AM
Subject: Re: [Tinyos-help] Help me with power range and signal strength!To: bhushan bhatt [EMAIL PROTECTED]You need to modify the
CC1000Control.h file in tos/system/platforms/mica2.Im assuming youre motes freq is 914 Mhz.In
that case there is a 2D array called CC1K_Params.Look for
the PA_POW variable under the 914 Mhz range (there is a seperate
row for each type of freq). Look in row 1. It is presently
// PA_POW 0x0b ((0x8CC1K_PA_HIGHPOWER) | (0x0CC1K_PA_LOWPOWER)),
//0xffChange the above to// PA_POW 0x0b// ((0x8CC1K_PA_HIGHPOWER) | (0x0CC1K_PA_LOWPOWER)), 0x00You
can see that I have changed PA_POW to the value 0x00 FROM 0xff
(default). The 0x0b (decimal number 11) is not a value...it indicates
the position of the element within row 1 of the CC1K_Params array. By giving diff values to PA_POW from 00 to ff, you can change the range.Let me know if it works.
If you are using a diff freq mote, change the PA_POW variable corresponding to that freq
On 6/28/06, bhushan bhatt
[EMAIL PROTECTED] wrote:
I have the same problem and tried to control the power by changing
CC2420 Radio file for tmote but i still cant get the desired range. I
still get range more than 30 feet. Does someone know and have reduced
the range for tmotes ??
BhushanAditya Bhave [EMAIL PROTECTED]
wrote: Many users (including me) have had no success using the CC1000Control interface and the setRFPower commands.
The way I did it was to edit the CC1000Control.h file in
/tos/system/platforms/mica2. Ive forgotten the excat location now but
there is a 2-D array called PARAM..something somewhere. In the xxxMhz
array (xxx is the radio freq of the motes u are using..there is a
seperate array for each type of freq) change the value of the PA_POW
variable. (this is a register in the CHIPCON chip that can be used to
adjust the transmitter power). By default it is 0xff on MICA2 motes.
When i changed it to 0x00 i got a range of about 4-6 feet in an indoor
lab environment.
On 6/28/06, Rahul Sawant [EMAIL PROTECTED] wrote:
Hi
Use the formula on pg 28 of this document.
http://www.xbow.com/Support/Support_pdf_files/MPR-MIB_Series_Users_Manual.pdf also u have declared data in MyMsg to be an array of size 18 ie it runs from 0 to 17 and u r using data[18] is it right just check that.
Rahul On 6/27/06,
Hieu Tran [EMAIL PROTECTED] wrote:
Hi all! I searched in the archieves and found some of the topics that disscuss about power range however I still have problem with it.
in the CC1000ControlM at the line: // Set default parameter values // POWER 0dbm gCurrentParameters[0xb] = ((8 CC1K_PA_HIGHPOWER) | (0
CC1K_PA_LOWPOWER)); call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]); I guess I can make a change to power range here so I make change : gCurrentParameters[0xb] =1;//I want to change to the minimum power range
call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]); After
that I recompile my program and run it. However It seems that my change
does not go in to effect (the range is still large).
Can you tell me the correct way to make the change to the power range? I have one more question about signal strength. I made the change at the TOS_Base, I try to read the signal strength from TOS_Msg
event TOS_MsgPtr RadioReceive.receive(TOS_MsgPtr Msg) { cmd= (struct MyMsg
*)Msg-data; temp1 = (int8_t) (((Msg-strength)8) 0xF);//take 8 MSB cmd-data[17] = temp1;//put in to packet at data[17]temp2 = (int8_t) ((8(Msg-strength)) 0xF);//take 8 LSB
cmd-data[18] = temp2;//put in ton packet at data[18] .. Here is MyMsg structure: typedef struct MyMsg { uint16_t seqno;
int8_t action; uint16_t source; uint8_t hop_count; uint16_t destaddr; int8_t data[18];} MyMsg; After
that, I use Listen program to read signal strength value, however all
the times these values are always 0 or 1 (convert to decimal number).
Can anyone tell me is this a correct way to receive signal strength? If
correct, how canconvert this value to dBm? many thanks! Tran!
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https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- regards,Aditya Bhave ___
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[Tinyos-help] Help me with power range and signal strength!
Hi all! I searched in the archieves and found some of the topics that disscuss about power range however I still have problem with it.in the CC1000ControlM at the line:// Set default parameter values // POWER 0dbm gCurrentParameters[0xb] = ((8 CC1K_PA_HIGHPOWER) | (0 CC1K_PA_LOWPOWER)); call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);I guess I can make a change to power range here so I make change : gCurrentParameters[0xb] =1;//I want to change to the minimum power range call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);After that I recompile my program and run it. However It seems that my change does not go in to effect (the range
is still large). Can you tell me the correct way to make the change to the power range?I have one more question about signal strength.I made the change at the TOS_Base, I try to read the signal strength from TOS_Msgevent TOS_MsgPtr RadioReceive.receive(TOS_MsgPtr Msg) { cmd= (struct MyMsg *)Msg-data; temp1 = (int8_t) (((Msg-strength)8) 0xF);//take 8 MSB cmd-data[17] = temp1;//put in to packet at data[17]temp2 = (int8_t) ((8(Msg-strength)) 0xF);//take 8 LSBcmd-data[18] = temp2;//put in ton packet at data[18] .. Here is MyMsg structure: typedef struct MyMsg { uint16_t seqno; int8_t action; uint16_t
source; uint8_t hop_count; uint16_t destaddr; int8_t data[18];} MyMsg; After that, I use Listen program to read signal strength value, however all the times these values are always 0 or 1 (convert to decimal number). Can anyone tell me is this a correct way to receive signal strength? If correct, how canconvert this value to dBm?many thanks! Tran!
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Re: [Tinyos-help] Help me with power range and signal strength!
Hi Tran,
i would change the output power with
CC1000Control.SetRFPower(uint8_t power)from
CC1000ControlM.
You can use this at runtime instead of changing default
values.
To validate your changes you can use the CC1000Control.GetRFPower()
function.
E.g.: call CC1000Control.SetRFPower(7);
call Leds.set(call
CC1000Control.GetRFPower());
- all LEDs
should be on.
OLE
- Original Message -
From:
Hieu Tran
To: tinyos-help@Millennium.Berkeley.EDU
Sent: Tuesday, June 27, 2006 1:44
PM
Subject: [Tinyos-help] Help me with power
range and signal strength!
Hi all!
I searched in the archieves and found some of the topics that disscuss
about power range however I still have problem with it.
in the CC1000ControlM at the line:
// Set default parameter values // POWER
0dbm gCurrentParameters[0xb] = ((8
CC1K_PA_HIGHPOWER) | (0
CC1K_PA_LOWPOWER)); call
HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
I guess I can make a change to power range here so I make change :
gCurrentParameters[0xb] =1;//I want to
change to the minimum power range call
HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
After that I recompile my program and run it. However It seems that my
change does not go in to effect (the range is still large).
Can you tell me the correct way to make the change to the power
range?
I have one more question about signal strength.
I made the change at the TOS_Base, I try to read the signal strength from
TOS_Msg
event TOS_MsgPtr RadioReceive.receive(TOS_MsgPtr Msg) {
cmd= (struct MyMsg *)Msg-data;
temp1 = (int8_t) (((Msg-strength)8) 0xF);//take 8
MSB
cmd-data[17] = temp1;//put in to packet at data[17]temp2 =
(int8_t) ((8(Msg-strength)) 0xF);//take 8
LSBcmd-data[18] = temp2;//put in ton packet at data[18]
..
Here is MyMsg structure:
typedef struct MyMsg { uint16_t
seqno; int8_t action; uint16_t
source; uint8_t hop_count;
uint16_t destaddr;
int8_t data[18];} MyMsg;
After that, I use Listen program to read signal strength value, however
all the times these values are always 0 or 1 (convert to decimal number). Can
anyone tell me is this a correct way to receive signal strength? If correct,
how canconvert this value to dBm?
many thanks!
Tran!
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PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less.
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Re: [Tinyos-help] Help me with power range and signal strength!
Hi
Use the formula on pg 28 of this document.
http://www.xbow.com/Support/Support_pdf_files/MPR-MIB_Series_Users_Manual.pdf
also u have declared data in MyMsg to be an array of size 18 ie it runs from 0 to 17 and u r using
data[18] is it right just check that.
Rahul
On 6/27/06, Hieu Tran [EMAIL PROTECTED] wrote:
Hi all!
I searched in the archieves and found some of the topics that disscuss about power range however I still have problem with it.
in the CC1000ControlM at the line:
// Set default parameter values // POWER 0dbm gCurrentParameters[0xb] = ((8 CC1K_PA_HIGHPOWER) | (0 CC1K_PA_LOWPOWER)); call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
I guess I can make a change to power range here so I make change :
gCurrentParameters[0xb] =1;//I want to change to the minimum power range call HPLChipcon.write(CC1K_PA_POW, gCurrentParameters[0xb]);
After that I recompile my program and run it. However It seems that my change does not go in to effect (the range is still large).
Can you tell me the correct way to make the change to the power range?
I have one more question about signal strength.
I made the change at the TOS_Base, I try to read the signal strength from TOS_Msg
event TOS_MsgPtr RadioReceive.receive(TOS_MsgPtr Msg) {
cmd= (struct MyMsg *)Msg-data;
temp1 = (int8_t) (((Msg-strength)8) 0xF);//take 8 MSB
cmd-data[17] = temp1;//put in to packet at data[17]temp2 = (int8_t) ((8(Msg-strength)) 0xF);//take 8 LSBcmd-data[18] = temp2;//put in ton packet at data[18]
..
Here is MyMsg structure:
typedef struct MyMsg { uint16_t seqno; int8_t action; uint16_t source; uint8_t hop_count; uint16_t destaddr; int8_t data[18];} MyMsg;
After that, I use Listen program to read signal strength value, however all the times these values are always 0 or 1 (convert to decimal number). Can anyone tell me is this a correct way to receive signal strength? If correct, how canconvert this value to dBm?
many thanks!
Tran!
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to the US (and 30+ countries) for 2¢/min or less.
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