Posted on May 17, 2011 at 12:07I'm using the upsd3312d and i'm working with the Uart0 to send data to a serial port (r232) i have a transiver (ICL3225e) between the serial port and the uart, i can Reseive Data from the computer but i cannot send data to the computer.. i'm seen the data that go out of the Tx line in is always in low.. Here is the code that i'm using...
//1.2 #define Timer2_Set_BaudRate(BaudRate)
timer2_baud = (65536L - ( (FREQ_OSC * 125L) / (4L * UART0_BAUD_RATE)));
RCAP2L = (timer2_baud & 0x00FF);
RCAP2H = (timer2_baud >> 8);
//1.3 Configure Timer2: Mode-Timer, Interrupt-No, Start
//1.1 Select UART0 Baud Generator: TCLK-Timer2, RCLK-Timer2
T2CON = 0x34; //Set and start Timer2.
//sbit TF2 = T2CON^7; // Timer2 overflow flag.
//sbit EXF2 = T2CON^6; // External signal flag. Set when negative transition occur on T2EX and EXEN2=1.
//sbit RCLK = T2CON^5; // UART0 receive clock select. 0-Timer1, 1-Timer2
//sbit TCLK = T2CON^4; // UART0 transimit clock select. 0-Timer1, 1-Timer2
//sbit EXEN2 = T2CON^3; // Timer2 external signal (T2EX) enable.
//sbit TR2 = T2CON^2; // Start/Stop control
//sbit C_T2 = T2CON^1; // Timer/Counter select
//sbit CP_RL2 = T2CON^0; // Capture/Reload select
//2. Configure P3.0,P3.1 as UART0 pins
P3SFS |= 0x03;
// P3SFS = 0x01;
// Force On the Transiver for the RS-232
P3_2 = 1;
//3. Set UART0 operating mode
SCON = 0x50; // enable first serial UART & receiver
//4. Configure MCU Interrupt support
PS = 1; // high priority for UART interrupt
ES = 1; // Enable UART0 interrupt
EA = 1; // Enable global interrupt flag
I have a while loop in were i write to the SBUF but nothing happen...
I make some other test with the Mode 0 and it transmit but i need to change the baud rate, so this mode is not good form me...
Can you help me?
Thanks
:D
[ This message was edited by: maritzayanet on 16-07-2005 02:08 ]
