ftdi_read_data return 0xff

[Rodrigo Rosa]

Hello,

I'm trying to use a ft2232 with MPSSE and JTAG.
I managed to get the device to respond to 0xAA (bogus code) with [0xFA
0xAA], but everytime I try to read I get 0xff.
any ideas?
Example:

    unsigned char output_buff[1024];
    unsigned char input_buff[1024];
    uint numBytesToSend = 0;
    uint numBytesToRead = 0;
    uint numBytesSent = 0;
    uint numBytesRead = 0;
        numBytesToSend = 0;
        output_buff[numBytesToSend++]=0x1A;
        output_buff[numBytesToSend++]=0x01;
        output_buff[numBytesToSend++]=0xAA;
        numBytesSent = ftdi_write_data(&ftdic, output_buff, numBytesToSend);
        //read
        numBytesToRead = numBytesSent;
        numBytesToSend = 0;
        output_buff[numBytesToSend++]=0x2E;
        output_buff[numBytesToSend++]=0x01;
        numBytesSent = ftdi_write_data(&ftdic, output_buff, numBytesToSend);
        numBytesToRead = numBytesSent;
        input_buff[0]=0x00;input_buff[1]=0x00;input_buff[2]=0x00;
        numBytesRead = ftdi_read_data(&ftdic, input_buff, numBytesToRead);

My objective is to be able to use the ft2232 to flash another device via
JTAG.

I've based my implementation on ioftdi from xc3sprog.

Thanks!
-- 
Rodrigo.


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