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Hi,

When i execute no_touch with the debugger of uVision I'm watching the dissembler window and i have a dude, When I call the function "lcall PGM_MTP"  of no_touch935, the program go to direction FF03 and in this direction there are these operations:

FF03     RL A
FF04     JMP @A+DPTR

Depends where i have the function of no_touch the DPTR can change, and then the program go to a one site of my code or another site, and the next sentence (pop IEN0) often never it is executed.

I don't know if this is correct, or if i have a mistake in the code.

Because when i program my device and i execute no_touch935 (with a string in UART or other system), i don't know what the device must do.

Thanks. I wish program within problems my device once by all.

Hello,

I have a problem. I use one Serial of my computer for programing two P89LPC935. Then, I have a board that create the signal of RST (the three pulses), and in this board i have a jumper for transmiting the RST to one or other device.

I wish program one, and after the other. But I can't do this. Always I program both, because both are in ISP mode, but i transmit my RST only a one device, then i don't understand because both are in ISP mode. I think that It is cause of Break Detect, but i'm not sure.

In the code i have put the no_touch935() in this form:

   if (received_char == 'F')
      {
      uart_transmit('F');
      no_touch935();
      }

and the uart_init();

void uart_init(unsigned char address,unsigned char mask)
{
  // configure UART
  // clear SMOD0
  PCON &= ~0x40;
  SCON = 0xB0;
  // set or clear SMOD1
  PCON &= 0x7f;
  PCON |= (0 << ;
  SSTAT = 0xF1;

  // configure address and mask
  SADDR = address;
  SADEN = mask;

  // enable break detect
  AUXR1 |= 0x40;

  // configure baud rate generator
  BRGCON = 0x00;
  BRGR0 = 0xF0;
  BRGR1 = 0x02;
  BRGCON = 0x03;

  // TxD = push-pull, RxD = input
  P1M1 &= ~0x01;
  P1M2 |= 0x01;
  P1M1 |= 0x02;
  P1M2 &= ~0x02;

  // initially not busy
  mtxbusy = 0;

  // enable uart receive interrupt
  ESR = 1;
  // enable uart transmit interrupt
  EST = 1;

} // uart_init


Then now I am in a point that i don't know how continue for the devices work correct.

My procedure is the following one:




I have lost more P89LPC935, and i'm tired of changing one and one more. Thanks.