Well you have a CC1110 based device but the radio is a CC1101.

8051 MCU + CC1101 Radio == CC1110

Its quite confusing because TI uses the same nomenclature for their MCU+Radio and Radio only chips.

mark sonn

Correct, SimpliciTi always uses a hardcoded power table, which is an array called mrfiRFPowerTable.

It writes the first entry of this array in the power register of the radio by calling the smpl_init() function.

If you call the smpl_ioctl function then another value of this array is written into radio register.

The design note DN013 gives you a list of all possible values.

If you want to amplify the output power by 10 dbm then you have to write the value 0xC0 in the register. Keep in mind that this doubles the current consumption

I changed the transmit power to the lowest preset value but the range was still more than I need:

    pwr = IOCTL_LEVEL_0;
    SMPL_Ioctl(IOCTL_OBJ_RADIO, IOCTL_ACT_RADIO_SETPWR, &pwr);

So I looked at the CC1101 PATABLE settings and changed it to the lowest setting which is -30dBm:

    pwr = 0x03;
    SMPL_Ioctl(IOCTL_OBJ_RADIO, IOCTL_ACT_RADIO_SETPWR, &pwr);

but after testing, the range appears to be unchanged. Why is this not reducing the range? How short of a range is possible with this device?

Thanks.

You have to modify the mrfiRFPowerTable array in the mrfi_radio.c file, which has by default 3 values. You call the

SMPL_Ioctl(IOCTL_OBJ_RADIO, IOCTL_ACT_RADIO_SETPWR, &pwr); function to write a value of this array in the radio register. The pwr variable is just the index of this array and not the value that you write in the array.
And I dont know what range you need. But a -9 dbm decrease of the output power is already enough to limit it to 3-4 meters range.

In the unrestricted CCS, mrfi => radios => family5 => mrfi_radio.c is ecluded from the build. I included it, but I am getting these errors:

error: symbol "MRFI_Sleep" redefined: first defined in
   "./simpliciti/Components/mrfi/mrfi.obj"; redefined in
   "./simpliciti/Components/mrfi/radios/family5/mrfi_radio.obj"
error: symbol "MRFI_PostKillSem" redefined: first defined in
   "./simpliciti/Components/mrfi/mrfi.obj"; redefined in
   "./simpliciti/Components/mrfi/radios/family5/mrfi_radio.obj"
error: symbol "MRFI_SetLogicalChannel" redefined: first defined in
   "./simpliciti/Components/mrfi/mrfi.obj"; redefined in
   "./simpliciti/Components/mrfi/radios/family5/mrfi_radio.obj"
error: symbol "MRFI_Rssi" redefined: first defined in
   "./simpliciti/Components/mrfi/mrfi.obj"; redefined in
   "./simpliciti/Components/mrfi/radios/family5/mrfi_radio.obj"

..........

I took a look in mrfi.c:

/* ----- Radio Family 5 ----- */
#elif (defined MRFI_RADIO_FAMILY5)
#    include "radios/family5/mrfi_radio.c"
#    include "radios/family5/mrfi_radio_interface.c"

Should I remove the radio family 5 includes?

I tried including all files in this family5 folder (including mrfi_radio_interface.c) but build failed with this error:

--obj_directory="simpliciti/Components/mrfi/radios/family5"  "../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c"
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 114: error: identifier "mrfiRIFIState_t" is undefined
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 122: warning: function declared implicitly

>> Compilation failure
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 133: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 136: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 153: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 170: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 189: error: identifier "mrfiRIFIState_t" is undefined
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 196: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 216: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 235: error: identifier "mrfiRIFIState_t" is undefined
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 241: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 256: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 273: error: identifier "mrfiRIFIState_t" is undefined
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 278: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 300: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 317: error: identifier "mrfiRIFIState_t" is undefined
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 322: warning: function declared implicitly
"../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c", line 369: warning: function declared implicitly
5 errors detected in the compilation of "../simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.c".
gmake: *** [simpliciti/Components/mrfi/radios/family5/mrfi_radio_interface.obj] Error 1

Any ideas?

Dont include it to the build. The source code is included by some other other file.

Thanks for your help. I was able to change the value in the table to 0x03 and rebuild sucessfully. After testing, I still am getting about 10 meters without dropping any packets and about 15 meters with some packet loss. Ideally I would  like the range to be about 3-4 meters, but this is ok. I guess I'm out of options for creating a smaller range right?

Then you didnt change the value successfully. The range should be almost 0 with that value. Make sure that you included the mrfi.c file to the build. This file includes the mrfi_radio.c code.

Also double check your SMARTRF_SETTING_xxx settings as well.

Bruce Mitchell

Also double check your SMARTRF_SETTING_xxx settings as well.

 

Which setting were you referring to?

#define SMARTRF_RADIO_CC430

#define SMARTRF_SETTING_FSCTRL1    0x08
#define SMARTRF_SETTING_FSCTRL0    0x00
#ifdef ISM_EU
// 869.525MHz
#    define SMARTRF_SETTING_FREQ2      0x21
#    define SMARTRF_SETTING_FREQ1      0x71
#    define SMARTRF_SETTING_FREQ0      0x7A
#else
#    ifdef ISM_US
// 902MHz (CHANNR=20->906MHz)
#        define SMARTRF_SETTING_FREQ2      0x22
#        define SMARTRF_SETTING_FREQ1      0xB1
#        define SMARTRF_SETTING_FREQ0      0x3B
#    else
#        ifdef ISM_LF
// 433.92MHz
#            define SMARTRF_SETTING_FREQ2      0x10
#            define SMARTRF_SETTING_FREQ1      0xB0
#            define SMARTRF_SETTING_FREQ0      0x71
#        else
#            error "Wrong ISM band specified (valid are ISM_LF, ISM_EU and ISM_US)"
#        endif // ISM_LF
#    endif     // ISM_US
#endif         // ISM_EU
#define SMARTRF_SETTING_MDMCFG4    0x7B
#define SMARTRF_SETTING_MDMCFG3    0x83
#define SMARTRF_SETTING_MDMCFG2    0x13
#define SMARTRF_SETTING_MDMCFG1    0x22
#define SMARTRF_SETTING_MDMCFG0    0xF8
#define SMARTRF_SETTING_CHANNR     0x00
#define SMARTRF_SETTING_DEVIATN    0x42
#define SMARTRF_SETTING_FREND1     0xB6
#define SMARTRF_SETTING_FREND0     0x10
#define SMARTRF_SETTING_MCSM0      0x18
#define SMARTRF_SETTING_FOCCFG     0x1D
#define SMARTRF_SETTING_BSCFG      0x1C
#define SMARTRF_SETTING_AGCCTRL2   0xC7
#define SMARTRF_SETTING_AGCCTRL1   0x00
#define SMARTRF_SETTING_AGCCTRL0   0xB2
#define SMARTRF_SETTING_FSCAL3     0xEA
#define SMARTRF_SETTING_FSCAL2     0x2A
#define SMARTRF_SETTING_FSCAL1     0x00
#define SMARTRF_SETTING_FSCAL0     0x1F
#define SMARTRF_SETTING_FSTEST     0x59
#define SMARTRF_SETTING_TEST2      0x81
#define SMARTRF_SETTING_TEST1      0x35
#define SMARTRF_SETTING_TEST0      0x09
#define SMARTRF_SETTING_FIFOTHR    0x47
#define SMARTRF_SETTING_IOCFG2     0x29
#define SMARTRF_SETTING_IOCFG0D    0x06
#define SMARTRF_SETTING_PKTCTRL1   0x04
#define SMARTRF_SETTING_PKTCTRL0   0x05
#define SMARTRF_SETTING_ADDR       0x00
#define SMARTRF_SETTING_PKTLEN     0xFF

#endif // SMARTRF_CC430_H

You use the default settings of the chronos project. I can confirm that it is possible to decrease the range of the chronos watch based on those settings.

The problem is the code with that you change the pa_table setting.

Do you change it after you called smpl_init? Did you include the mrfi.c file to the build process?

Sorry, I though there was a SMARTRF param for PA table, entry 0;

My bad.

Sorry.

What would you say is the range now that you changed the parameters ?

Do you have any idea of the power consumption when sending packets out ?

Thanks

mark sonn

Do you change it after you called smpl_init? Did you include the mrfi.c file to the build process?

    pwr = IOCTL_LEVEL_0;
    SMPL_Ioctl(IOCTL_OBJ_RADIO, IOCTL_ACT_RADIO_SETPWR, &pwr);

Pfister Frederic

What would you say is the range now that you changed the parameters ?

Do you have any idea of the power consumption when sending packets out ?

Thanks