unable to get receive interrupts using ustasker 1.3 on NE64

[lthyagar]

I am unable to get receive interrupts using the simulator. I have characters  coming in on COM1 on my PC. Using the debugger, the code never gets to the SCI1/0_interrupt routine.

my code snippet below:
void setUart(unsigned char mode)
{
   TTYTABLE tInterfaceParameters;       //table for passing information to driver
   
   tInterfaceParameters.Channel = SERIAL_PORT_0;  // serial 0, 1, 2,  etc.
    tInterfaceParameters.ucSpeed =  SERIAL_BAUD_4800; // baud rate
     tInterfaceParameters.Rx_tx_sizes.RxQueueSize = RX_BUFFER_SIZE;       // input buffer size
   tInterfaceParameters.Rx_tx_sizes.TxQueueSize = TX_BUFFER_SIZE;      // output buffer size
      tInterfaceParameters.Task_to_wake = 0;
   tInterfaceParameters.usConfig = (CHAR_8 | NO_PARITY | ONE_STOP | NO_HANDSHAKE |  CHAR_MODE );               
   
   if ( (SerialPortID = fnOpen(TYPE_TTY, mode, &tInterfaceParameters)) != 0 )  // open or change the channel with defined configurations (initially inactive)
      fnDriver( SerialPortID, (RX_ON | TX_ON), 0 );        // enable RX & TX
   
}


SERIAL_PORT_0  1 // map SCI0 to COM1
I have the same code running on a SAM7X code base.

Thanks!!
Lav

[mark]

Hi Lav

The V1.3 package doesn't support extended COM port mapping. This means that you need to use

SERIAL_PORT_0  '1'   // map SCI0 to COM1

(note that the 1 is written as ASCII '1', which is limited to COM '1' .. '9').

The V1.4 version (with #define SIM_COM_EXTENDED) allows 1..255 to be selected.

Regards

Mark

[lthyagar]

Now I am getting Unhandled exception at 0x0045018f in uTaskerV1-3.exe: 0xC0000005: Access violation writing location 0x00000069.
line  tx_control[pars->Channel]->opn_mode = pars->usConfig;
Any hints will be appreciated.
Thanks!!
Lav