| ??? 03/15/06 13:50 Read: times |
#112229 - config() Responding to: ???'s previous message |
config() function is below.
init_COM() is in the original post
void config (void)
{
int n = 0;
WDTCN = 0x07; // Watchdog Timer Control Register
WDTCN = 0xDE; // Disable WDT
WDTCN = 0xAD;
SFRPAGE = 0x0F;
XBR0 = 0x04; // XBAR0: Initial Reset Value
XBR1 = 0x00; // XBAR1: Initial Reset Value
XBR2 = 0x44; // XBAR2: Initial Reset Value added on 11 July 2004 for Com2
SFRPAGE = 0x0F;
P0MDOUT = 0x05; // Output configuration for P0
P1MDOUT = 0x00; // Output configuration for P1
P2MDOUT = 0x00; // Output configuration for P2
P3MDOUT = 0x00; // Output configuration for P3
P4MDOUT = 0x00; // Output configuration for P4
P5MDOUT = 0x00; // Output configuration for P5
P6MDOUT = 0x00; // Output configuration for P6
P7MDOUT = 0x00; // Output configuration for P7
P1MDIN = 0xFF; // Input configuration for P1
// Oscillator Configuration
SFRPAGE = 0x00;
FLSCL = 0x10; // FLASH Memory Control
SFRPAGE = 0x0F;
OSCXCN = 0x00; // EXTERNAL Oscillator Control Register
/*
for (n = 0; n < 1000; n++) ; // wait for osc to start
while ( (OSCXCN & 0x80) == 0 ); // wait for xtal to stabilize
*/
OSCICN = 0xC3; // 83 ALSO SAME Internal Oscillator Control Register
PLL0CN = 0;
PLL0DIV = 0x01; // PLL pre-divide Register
PLL0FLT = 0x31; // PLL Filter Register
PLL0MUL = 0x02; // PLL Clock scaler Register
PLL0CN = 0x01; // PLL Control Register
for(n = 0; n < 500; n++); // wait at least 5us
PLL0CN |= 0x02; // enable PLL
while ( (PLL0CN & 0x10) == 0 ); // wait for PLL to lock
// select PLL as clock source
CLKSEL = 0x02; // Oscillator Clock Selector
//----------------------------------------------------------------
// UART0 Configuration
//----------------------------------------------------------------
SFRPAGE = 0x00;
SADEN0 = 0x00; // Serial 0 Slave Address Enable
SADDR0 = 0x00; // Serial 0 Slave Address Register
// SMOD0 = 1 disable baud rate devide / 2
// Timer3 Generates Baud Rate
SSTA0 = 0x1A; // UART0 Status and Clock Selection Register
// UART0 Mode 1 8bit auto variable baud rate
SCON0 = 0x50; // Serial Port Control Register
SCON0 &= 0xFC; //clear interrupt pending flags
PCON = 0x00; // Power Control Register
// UART1 Configuration
SFRPAGE = 0x01; // Baud Rate same as Uart0 38400
SCON1 = 0x10; // Serial Port 1 Control Register
SCON1 &= 0xFC; // clear interrupt pending flags
// tested on 11 July 2004.OK
// Timers Configuration
SFRPAGE = 0x00;
// Timer 1 uses SYSCLK as time base
// timer0/1 prescales = SYSCLK / 4
CKCON = 0x01; // Clock Control Register
// timer 1 generates UART1 baud rate
// TIMER 1 USES CLK PRESCALER. TIME BASE IS SYSCLK / 4
TL0 = 0x00; // Timer 0 Low Byte
TH0 = 0xee; // Timer 0 High Byte
TL1 = 0x00; // Timer 1 Low Byte
TH1 = 0x61; // Timer 1 High Byte
TMOD = 0x22; // Timer Mode Register 8bit auto reload
TCON = 0x50; // Timer Control Register
// Timer 3 for UART0 BAUD GENERATOR
// Time Base is SYSCLK @ 49MHZ
// Baud Rate 38765 = FFB1
// Baud Rate 117788 = FFE6
SFRPAGE = 0x01;
TMR3CF = 0x08; // 0 Timer 3 Configuration
RCAP3L = 0xB1; // Timer 3 Reload Register Low Byte
RCAP3H = 0xFF; // Timer 3 Reload Register High Byte
TMR3H = 0x00; // Timer 3 High Byte
TMR3L = 0x00; // Timer 3 Low Byte
TMR3CN = 0x04; // Timer 3 Control Register
SFRPAGE = 0x00;
RSTSRC = 0x00; // Reset Source Register
// Interrupt Configuration
//----------------------------------------------------------------
// IE = 0xA1; //Interrupt Enable
IP = 0x00; //Interrupt Priority
EIE1 = 0x00; //Extended Interrupt Enable 1
EIE2 = 0x00; //Extended Interrupt Enable 2
EIP1 = 0x00; //Extended Interrupt Priority 1
EIP2 = 0x00; //Extended Interrupt Priority 2
SFRPGCN = 0x00;
} //End of config
i hope this would be sifficient. many thanks haribabu |



