Posted on May 17, 2011 at 12:10hi,
i used upsd3333dv
timer0 -->1ms
the uart1 at 9600bps using timer1 / 40MHz clk.
when i activited Timer1 (ET1=1) timer0 is stop
THANKS FOR YOUR HELP
////////////////////////////////////////////////////////////////////
void psd_Timer1 (UWORD baudrate)
{
unsigned char baud_ratio;
UWORD timer_reg_value;
bit ea_value;
ea_value = EA; // save EA state
EA = 0; // Disable Interrupts
SCON1&=0xFD;
t_in1 = 0; // empty transmit buffer
t_out1 = 0;
t_disabled1 = 1; // disable transmitter
PCON |= 0x40; // baudrate X2 pour uart1
if ( (PCON & 0xC0) ) baud_ratio = 0x02 ;
else
baud_ratio = 0x01;
//------------------------------------------------
//Set timer 1 up as a baud rate generator.
//------------------------------------------------
TR1 = 0; // stop timer 1
ET1 = 0; // disable timer 1 interrupt
//IE|=0xF7; //desable timer1 interrupt
//T2CON &= 0xCF;
//T2CON |= 0x30;
PCON &= 0xf3; // use timer 1 for baudrate UART
TH1 = (unsigned char) (256 - (OSC * baud_ratio/ (32L * 12L * baudrate)));
//IE|=0x08; //enable timer1 interrupt
ET1 = 1; //enable timer 1 interrupt
TR1 = 1; // met en marche le timer 1
EA = ea_value; // return EA value
}
void psd_UART1_Init(void)
{
//UART1
SCON1&=0xFC; // clear TI and RI interrupt flag
SCON1 |= 0x70; // mode 1
IEA|=0x10; // enable UART1
}
void init_psd(void)
{
PSD_reg.DIRECTION_A = 0x30; // set port pins PA4(RST_2) and PA5(RST_1) to output
PSD_reg.DATAOUT_A = 0x30; // pas de reset VPC3: PA4(RST_2) and PA5(RST_1)
PSD_reg.DIRECTION_B = 0x30; // set port pins PB4(LED_1) and PB5(LED_2) to output
PSD_reg.DATAOUT_B = 0x30; // turn off LEDs: PB4(LED_1) and PB5(LED_2)
P3SFS = 0x03; // enable alternate port function Tx, Rx UART0
P4SFS0 = 0x0C; // enable alternate port function Tx, Rx UART1
P4SFS1 = 0x0C; // enable alternate port function Tx, Rx UART1
}
void TimerInstall(void) // init du timer 0. 1 IT ttes les 1ms
{
TR0 = 0;
TMOD = (TMOD & 0xf0) | 0x01; // 16-bit timer mode
TH0 = TH0_RELOAD;
TL0 = TL0_RELOAD;
ET0 = 1; // enable timer 0 interrupt
TR0 = 1; // run timer 0
}
