Hello everybody !
 
I'm still trying to get the RSSI info for a received message.
 
Firstly, I updated the XBEE firmware to 10A2.
 
Secondly, I tried with the AT commands manualy in the console and it works.
 
Now I'm trying to have it via the 6th IO pin on the ARM microcontroler.
 
In order to do this , I added this to the utils.c file :
Code:

unsigned char P06_read() {
	return (unsigned char) ((IOPIN0 & 0x00000040) >> 6);
}
 

 
And I added this function to the main.c file:
Code:

//get RSSI from PWM output of xbee
int getRssi(void) {
	unsigned int i,j;
	int cnt = 0;

	//wait until 1 in P06
	do { i = P06_read(); }while(i==0);


	//for 64 µs
	for (j=0;j<64;j++) {

		i <- P06_read();
		if(i != 0) { cnt++; }
		delayUs(1);
	}


	uart0SendChar(cnt);
	uart0SendChar("\n");
	return cnt;

}
 

 
I call this function after receiving a message on the robot.
And it sends the value '@' which means '64'
So it doesn't seems to work as it allways send the maximum value ?
 
As I sais I tried with the AT commands and it works ok but it is really too slow to wait 2 seconds each time I want the RSSI value.
 
About the OEM/API mode it seems a bit complicated as a good part of the firmware should be modified in order to pass from transparent mode to API mode.
 
Another thing I'd like to mention is that both the JAVA and PYTHON programs do not work right with the latest (10A2) xbee firmware.
 
Thank you in advance.
 
Mathieu

Update -  I hooked up a scope, and RSSI Pin 6 is working with 1090, but you need to change RSSI PWM Timer to '1' - this sets a max duty cycle of 100 milliseconds.  The default value is 0x28 = 4 seconds !

I'm really new with this, and I'm trying to display the RSSI information on the Java console .  What would be the best way to achieve that?

RSSI is also something which is interesting. Is there a way to find the RSSI for a SRV1 With the blackfin?

I'm guessing since there is an actual signal pin then uClinux may be able to report an RSSI value given the right program and Kernel config?

Quote from admin on 03/02/07 at 9:50am:

 
I'm guessing that this RSSI pin 6 was not for the blackfin board...

Quote from admin on 03/02/07 at 9:50am:

 
I'm going to make some code for the ARM7 to show the RSSI info on the Java console (and hopefully from this I can display an estimate on how far away from the base it is). I don't have an o-scope, and I know the RSSI output returns a value from 0-100, so your saying that each millisecond it's on corresponds to a higher signal strength?

Has anyone else had trouble connecting to the Xbee radio using X-CTU? The manual says something about using a serial cable, but it's possible to use the USB radio, correct? I set the baud rate to 115200, no flow control, 8 data bits, no parity, and 1 stop bit. I turn on the ARM7 SRV, and when I press Test/Query, it says 'cannot open com port'. Any ideas?