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I am confused how to use UART 1 in P89c669.
Normally for using UART 0 i follow the below register initialization.
SCON = 0x50; //Serial com in mode 1 and REN - 1 TMOD = 0x20; //Timer 1 in mode 2 - auto reload mode TH1 = 0xFD; //Timer 1 to operate at 19600 baud rate TL1 = 0x00; //since auto relaod mode TL1 = 0 TR1 = 1; //Run control bit to start the timer 1
So i check the RI and TI bit for reception and transmission.
In the datasheet it is mentioned that for UART 0 we can use Timer 1 or Timer 2 or Baud Rate generate register for generating the baud rate. But here i use Timer 1.
For using the UART 1 it is mentioned that we should use the baud rate generator register for communication.
Can anybody help me how to use UART 1 for serial port communication.
I want to use UART 1 same as that of UART 0.
ya i tried as what u said. but there was no output at all.actually i am using RS 232 to control a power supply.
The power supply can be controlled when i use UART 0. But with UART 1 it coudnt communicate.
I am not sure where the problem lies.
i also have problem in compile of code to add include of header "#include "maxim.h"" what is the problem?