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Electronics => Electronics => Topic started by: weijie90 on December 04, 2009, 03:33:46 AM

Title: CMUCam2 + Axon problems
Post by: weijie90 on December 04, 2009, 03:33:46 AM

 Hi,

I have a CMUCam which works via Bluetooth. According to its response to the GV command, it is a CMUCam2 v1.00 c6. THe SJ command also works.

I am trying to use the Axon to pipe the output of the SJ (send JPEG) command to the PC via rprintf. However, all I get is

��u�ŭ�EҎ� ����

and then -1s (not shown).

The code I'm using is:


void cmucam_init(void) {
    uart0SendByte('R');
    uart0SendByte('S');
    uart0SendByte('\n');
    delay_ms(500);  // wait 500 milliseconds

    uart0SendByte('R');
    uart0SendByte('M');
    uart0SendByte(' ');
    uart0SendByte('1');
    uart0SendByte('\n');
    delay_ms(500);   // wait 500 milliseconds

    rprintf("CMUcam Initialized\n");  // send out the message through USB
}

void cmucam_test(void){
    uart0SendByte('s');
    uart0SendByte('j');
    uart0SendByte('\r');

    int c;
    int i;
    for (i = 0; i < 10000; i++){
        c = uart0GetByte();
        if (c != -1){
            rprintf("%c", (char)c);
        }
    }
    rprintf("\n\nOK");

    /*Receive_Echo(6000);*/
}




................ In main() ..................

cmucam_init();
cmucam_test();


................ In Axon.c .................

uartSetBaudRate(0, 115200); // set UARTE speed, for the CMUCam


What's going on? I don't think it's an issue with UART bit errors, because I get so little data.

Any help would be greatly appreciated. Thank you so much!

Title: Re: CMUCam2 + Axon problems
Post by: airman00 on December 04, 2009, 08:20:48 AM

I think its
    uart0SendByte('\r);     not    uart0SendByte('\n');

Title: Re: CMUCam2 + Axon problems
Post by: weijie90 on December 04, 2009, 08:34:01 AM

Ok, but the SJ command does give an \r.