Posted on May 17, 2011 at 11:58Hello all,
I‘m using uPSD3334DV in my card and the platform has 2 serial ports.
I initiated a communication between UART0 and a PC serial port, and it’s working good.
I tried to use UART1 for another channel but the serial signal don’t appears.
In the debugger the program jump to UART1 interrupt every byte transmit.
My program for initialize UART0 and UART1 :
Ea =0
//---------- UART0 -------------
timer2_baud = (65536L - ( (FREQ_OSC * 125L) / (4L * 19200L)));
RCAP2L = (timer2_baud & 0x00FF); // Timer 2 Reload low byte
RCAP2H = (timer2_baud >> 8,); // Timer 2 Reload high byte
T2CON = 0x34; // Set RCLK = 1 ,TCLK= 1 Timer2 select for uart0
// TR2 = 1 start Timer2.
P3SFS|=0x03; // Configure P3.0,P3.1 as UART0 pins
SCON = 0x40; //uart0 - mode 1 - SM1= 1 SM0 = 0
// 8 BIT variable data rate
RI = FALSE; // prepare to receive
REN = 1; // receiver enable - register
ES = 1; // Enable Uart0 interrupt
//---------- UART1 -------------
TMOD |= 0x20; // Timer 1 mode - 8 bit auto reload
SCON1 = 0xE0; // SM1= 1 SM0 = 1 mode 3 - 11 bits data
TH1 = 0xfd; // 19200 baud - must change recording to OSC
PCON |= 0x4C ; // set RCLK1 = 1 , TCLK1 = 1 - recive and
// transmit CLK enable
// smod1 =1 UART1 - boud rate *2
TR1 = 1; // baud rate generator run !
RI1 = FALSE; // prepare to receive
REN1 = 1; // receiver enable - TCON register
P1SFS0 |=0x06; // Configure P1.2,P1.3 as UART1 pins
IEA |= 0x10 ; // ES1=1 Enable Uart1 interrupt
The problem is why the serial signal don’t appears.
hanan
[ This message was edited by: hanan54 on 04-02-2004 10:11 ]
