void shiftout(char n)
{
//read the SPTEF bit, continue if bit is 1
PTT_PTT4 = 1;
//write data to SPI data register
while(!SPISR_SPTEF);
SPIDR = n;
while(!SPISR_SPTEF);
//wait for 30 cycles for SPI data to shift out
lcdwait();
PTT_PTT4 = 0;
lcdwait();
PTT_PTT4 = 1;
lcdwait();
}
void lcdwritedata(uint8 da)
{
lcdwait();
RS=1;
RW=0;
P0=da;
E=1;
E=0;
}
void lcdwritecmd(uint8 cmd)
{
lcdwait();
RS=0;
RW=0;
P0=cmd;
E=1;
E=0;
}
/*
***********************************************************************
send_byte: writes character x to the LCD
***********************************************************************
*/
void send_byte(char x)
{
shiftout(x);
PTT_PTT4=1;
PTT_PTT4=0;
PTT_PTT4=1;
lcdwait();
// shift out character
// pulse LCD clock line low->high->low
// wait 2 ms for LCD to process data
}
void initializations(void) {
/* Set the PLL speed (bus clock = 24 MHz) */
CLKSEL = CLKSEL & 0x80; // disengage PLL from system
PLLCTL = PLLCTL | 0x40; // turn on PLL
SYNR = 0x02; // set PLL multiplier
REFDV = 0; // set PLL divider
while (!(CRGFLG & 0x08)){ }
CLKSEL = CLKSEL | 0x80; // engage PLL
/* Disable watchdog timer (COPCTL register) */
COPCTL = 0x40; //COP off, RTI and COP stopped in BDM-mode
/* Initialize asynchronous serial port (SCI) for 9600 baud, no interrupts */
SCIBDH = 0x00; //set baud rate to 9600
SCIBDL = 0x9C; //24,000,000 / 16 / 156 = 9600 (approx)
SCICR1 = 0x00; //$9C = 156
SCICR2 = 0x0C; //initialize SCI for program-driven operation
DDRB = 0x10; //set PB4 for output mode
PORTB = 0x10; //assert DTR pin on COM port
/* Add additional port pin initializations here */
DDRT = 0xFF;
/* Initialize SPI for baud rate of 6 Mbs */
SPIBR = 0b00000001; //SPRx = 1, SPPRx = 0, (0+1)*(2^(1+1)) = 4, 24MHz/4 = 6 Mbps
SPICR1 = 0b01010000; //pg156 <- pg159
SPICR2 = 0b00000000; //pg160 <- pg159
/* Initialize digital I/O port pins */
DDRAD = 0; //program port AD for input mode
ATDDIEN = 0xC0; //program PAD7 and PAD6 pins as digital inputs
/* Initialize the LCD
- pull LCDCLK high (idle)
- pull R/W' low (write state)
- turn on LCD (LCDON instruction)
- enable two-line mode (TWOLINE instruction)
- clear LCD (LCDCLR instruction)
- wait for 2ms so that the LCD can wake up
*/
PTT_PTT4 = 1;
PTT_PTT3 = 0;
send_i(LCDON);
send_i(TWOLINE);
send_i(LCDCLR);
lcdwait(2);
/* Initialize RTI for 2.048 ms interrupt rate */
CRGINT = CRGINT | 0x80; //enable RTI (pg32)
RTICTL = 0x1F; //pg33
/* Initialize TIM Ch 7 (TC7) for periodic interrupts every 1.000 ms
- enable timer subsystem
- set channel 7 for output compare
- set appropriate pre-scale factor and enable counter reset after OC7
- set up channel 7 to generate 1 ms interrupt rate
- initially disable TIM Ch 7 interrupts
*/
TSCR1 = 0b10000000; //enable subsys
TIOS = 0b10000000; //chan 7 for output compare
TSCR2 = 0b00001100; //set pre-scale factor and enable counter reset
TC7 = 1500; //generate 1500clicks = 1 ms interrupt rate from notes
TIE = 0b00000000; //interrupt disabled
// Add RTI/interrupt initializations here
CRGINT = 0b10000000; //enables RTI
ATDCTL2 = 0b10000000; //enable atd
ATDCTL3 = 0b00010000; //
ATDCTL4 = 0b10000110; //set to 10 bit control mode, prescale clock to 2Mhz
ATDCTL5 = 0b00010000; //sample across multiple channels
ATDCTL2_AFFC = 1; //set to fast flag clear mode
}
void main(void) {
DisableInterrupts;
initializations();
EnableInterrupts;
for(;;) {
/* write your code here */
// If the left pushbutton ("start reaction test") flag is set, then:
// - clear left pushbutton flag
// - set the "run/stop" flag
// - display message "Ready, Set..." on the first line of the LCD
// - turn off the left LED (PT1)
// - turn on the right LED (PT0)
// Endif
if (leftpb ==1 && !runstp){
goteam = 0;
react = 0;
runstp = 1;
leftpb = 0;
RLed = 1; //Right LED
LLed = 0; //Left LED
YELLOW = 0;
GREEN = 0;
RED = 0;
send_i(LCDCLR);
lcdwait();
pmsglcd("Ready, Set...", 13, LINE2);
}
// If the "run/stop" flag is set, then:
// - If the "goteam" flag is NOT set, then:
// + If "random" = $0000, then:
// - set the "goteam" flag
// - clear TCNT register (of TIM)
// - clear "react" variable (2 bytes)
// - enable TIM Ch7 interrupts
// - turn on YELLOW LED
// - display message "Go Team!" on the second line of the LCD
// + Endif
// - Endif
// Endif
if(runstp && !goteam && random==0x00){
goteam = 1;
react = 0;
YELLOW = 1; //Yellow LED
send_i(LCDCLR);
lcdwait();
pmsglcd("Go team!", 8, LINE2);
TIE = 0x80;
}
// If the right pushbutton ("stop reaction test") flag is set, then:
// - clear right pushbutton flag
// - clear the "run/stop" flag
// - clear the "goteam" flag
// - turn off yellow LED
// - disable TIM Ch 7 interrupts
// - call "tdisp" to display reaction time message
// - turn off right LED (PT0)
// - turn on left LED (PT1)
// Endif
if (rghtpb == 1) {
rghtpb = 0;
if(runstp && goteam){
runstp = 0;
goteam = 0;
YELLOW = 0;
TIE = 0x0;
send_i(LCDCLR);
lcdwait();
tdisp();
if(react <= 250){
GREEN = 1;
pmsglcd("F**K YEAH!", 10, LINE2);
}else{
GREEN =0;
pmsglcd("Really?", 7, LINE2);
}
RLed = 0; //Right LED
LLed = 1; //Left LED
}
}
// If "react" = 999 (the maximum 3-digit BCD value), then:
// - clear the "run/stop" flag
// - turn off yellow LED, turn on red LED
// - disable TIM Ch 7 interrupts
// - display message "Time = 999 ms" on the first line of the LCD
// - display message "Too slow!" on the second line of the LCD
// - turn off right LED (PT0)
// - turn on left LED (PT1)
// Endif
if(react >= 999 && runstp){
runstp = 0;
react =0;
YELLOW = 0; //Yellow LED
RED = 1; //Red LED
TIE = 0x0;
send_i(LCDCLR);
lcdwait();
pmsglcd("RT = 999ms", 10, LINE1);
pmsglcd("Too slow!", 9, LINE2);
RLed = 0; //Right LED
LLed = 1; //Left LED
}
_FEED_COP();
}/* loop forever */
} /* do not leave main */
//***********************************************************************
//Initializations
//***********************************************************************
void initializations(void) {
//Set the PLL speed (bus clock = 24 MHz)
CLKSEL = CLKSEL & 0x80; // disengage PLL from system
PLLCTL = PLLCTL | 0x40; // turn on PLL
SYNR = 0x02; // set PLL multiplier
REFDV = 0; // set PLL divider
while (!(CRGFLG & 0x08)){ }
CLKSEL = CLKSEL | 0x80; // engage PLL
//Disable watchdog timer (COPCTL register)
COPCTL = 0x40; //COP off, RTI and COP stopped in BDM-mode
//Initialize asynchronous serial port (SCI) for 9600 baud, no interrupts
SCIBDH = 0x00; //set baud rate to 9600
SCIBDL = 0x9C; //24,000,000 / 16 / 156 = 9600 (approx)
SCICR1 = 0x00; //$9C = 156
SCICR2 = 0x0C; //initialize SCI for program-driven operation
DDRB = 0x10; //set PB4 for output mode
PORTB = 0x10; //assert DTR pin on COM port
//Add additional port pin initializations here
ATDDIEN = 0xC0;
prevpb = 0;
prevpbl = 1;
prevpbr = 1;
//Initialize the SPI to baud rate of 6 Mbs
DDRM = 0xFF;
SPICR1 = 0x50;
SPICR2 = 0x00;
SPIBR = 0x01;
//Initialize digital I/O port pins
DDRT = 0xFF;
//Initialize the LCD
// - pull LCDCLK high (idle)
PTT_PTT4 = 1;
// - pull R/W' low (write state)
PTT_PTT3 = 0;
// - turn on LCD (LCDON instruction)
send_i(LCDON);
// - enable two-line mode (TWOLINE instruction)
send_i(TWOLINE);
// - clear LCD (LCDCLR instruction)
send_i(LCDCLR);
// - wait for 2ms so that the LCD can wake up
lcdwait();
lcdwait();
//
//Initialize RTI for 2.048 ms interrupt rate
RTICTL = 0x41;
CRGINT = CRGINT | 0x80;
//Initialize TIM Ch 7 (TC7) for periodic interrupts every 1.000 ms
// - enable timer subsystem
TSCR1 = 0x80;
// - set channel 7 for output compare
TSCR2 = 0x0C;
// - set appropriate pre-scale factor and enable counter reset after OC7
TIOS = 0x80;
// - set up channel 7 to generate 1 ms interrupt rate
TIE = 0x00;
// - initially disable TIM Ch 7 interrupts
TC7 = 1500;
}
/*
***********************************************************************
Initializations
***********************************************************************
*/
void initializations(void) {
/* Set the PLL speed (bus clock = 24 MHz) */
CLKSEL = CLKSEL & 0x80; // disengage PLL from system
PLLCTL = PLLCTL | 0x40; // turn on PLL
SYNR = 0x02; // set PLL multiplier
REFDV = 0; // set PLL divider
while (!(CRGFLG & 0x08)){ }
CLKSEL = CLKSEL | 0x80; // engage PLL
/* Disable watchdog timer (COPCTL register) */
COPCTL = 0x40; //COP off, RTI and COP stopped in BDM-mode
/* Initialize asynchronous serial port (SCI) for 9600 baud, no interrupts */
SCIBDH = 0x00; //set baud rate to 9600
SCIBDL = 0x9C; //24,000,000 / 16 / 156 = 9600 (approx)
SCICR1 = 0x00; //$9C = 156
SCICR2 = 0x0C; //initialize SCI for program-driven operation
DDRB = 0x10; //set PB4 for output mode
PORTB = 0x10; //assert DTR pin on COM port
/* Add additional port pin initializations here */
DDRAD = 0; //program port AD for input mode
ATDDIEN = 0xf0; //program PAD7 and PAD6 pins as digital inputs
DDRM_DDRM5=1;
DDRM_DDRM4=1;
DDRT=0xff;
ATDCTL2 = 0x80;
ATDCTL3 = 0x10;
ATDCTL4 = 0x85;
//ATDCTL5 = 0x85;
/* Initialize SPI for baud rate of 6 Mbs */
SPIBR=0x01;
SPICR1=0x50;
SPICR2=0x08;
/* Initialize digital I/O port pins */
//Initialising PWM
/*MODRR=0x02;//pt3 as ch3 0000 1000
PWME=0x02; //enable pwm ch3
PWMPOL=0x00;//active low polarity
PWMCTL=0;//no concatenate (8)
PWMCAE=0;// left-aligned output mode
PWMPER1=0xff; //period ff
PWMDTY1=0x00; //duty cycle
PWMCLK=0x80; //clock a for cho 0
PWMSCLA=0x00;
PWMPRCLK=0x07; //clock a =12m */
PTT_PTT6=1;
PTT_PTT7=0;
send_i(LCDON);
send_i(TWOLINE);
send_i(LCDCLR);
lcdwait();
/* Initialize RTI for 2.048 ms interrupt rate */
RTICTL=0x50 ;
CRGINT_RTIE=1;
/* Initialize TIM Ch 7 (TC7) for periodic interrupts every 1.000 ms
- enable timer subsystem
- set channel 7 for output compare
- set appropriate pre-scale factor and enable counter reset after OC7
- set up channel 7 to generate 0.01 ms interrupt rate
- initially disable TIM Ch 7 interrupts
*/
TSCR1=0x80;
TIOS = 0x80;
TSCR2=0x0c;
TC7=15;
TSCR2_TCRE=1;
//TIE=0xff;
TIE_C7I = 0;
}
