//*****************************************************************************
//
// Configure Timer0B as a 16-bit one-shot counter with a single interrupt
// after 1ms.
//
//*****************************************************************************
int
main(void)
{
//
// Set the clocking to run directly from the external crystal/oscillator.
// TODO: The SYSCTL_XTAL_ value must be changed to match the value of the
// crystal on your board.
//
SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// The Timer0 peripheral must be enabled for use.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
//
// Set up the serial console to use for displaying messages. This is
// just for this example program and is not needed for Timer operation.
//
InitConsole();
//
// Display the example setup on the console.
//
UARTprintf("16-Bit Timer Interrupt ->");
UARTprintf("\n Timer = Timer0B");
UARTprintf("\n Mode = One Shot");
UARTprintf("\n Rate = 1ms");
//
// The Timer0 peripheral must be enabled for use.
//
TimerConfigure(TIMER0_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_B_ONE_SHOT);
//
// Set the Timer0B load value to 1ms.
//
TimerLoadSet(TIMER0_BASE, TIMER_B, SysCtlClockGet() / 1000);
//
// Enable processor interrupts.
//
IntMasterEnable();
//
// Configure the Timer0B interrupt for timer timeout.
//
TimerIntEnable(TIMER0_BASE, TIMER_TIMB_TIMEOUT);
//
// Enable the Timer0B interrupt on the processor (NVIC).
//
IntEnable(INT_TIMER0B);
//
// Enable Timer0B.
//
TimerEnable(TIMER0_BASE, TIMER_B);
//
// Wait for interrupt to occur
//
while(!g_bIntFlag)
{
}
//
// Display a message indicating that the one shot interrupt was received.
//
UARTprintf("\n\nOne shot timer interrupt received.");
//
// Loop forever.
//
while(1)
{
}
}
int main(void) {
SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);//1024hz = 15625
SysCtlPeripheralEnable(SYSCTL_PERIPH_UART1);
GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6);
GPIOPinTypeGPIOOutput(GPIO_PORTB_BASE, GPIO_PIN_3);
GPIOPinTypeGPIOInput(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);
GPIOPinConfigure(GPIO_PB1_U1TX);
GPIOPinTypeUART(GPIO_PORTB_BASE, GPIO_PIN_1);
UARTConfigSetExpClk(b1, SysCtlClockGet(), 9600, UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE);
UARTEnable(b1);
GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1);
GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, (GPIO_PIN_0 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_1));
GPIOPinTypeGPIOInput(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7);
frequency = SysCtlClockGet()/2;
changeCursorUnderscore();
toggleLED();
//Clear Display
clearDisplay();
//putPhrase("Hello World!");
//Timer Configuration
TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
TimerLoadSet(TIMER0_BASE, TIMER_A, frequency);
TimerControlEvent(TIMER0_BASE, TIMER_A, TIMER_EVENT_POS_EDGE);
TimerEnable(TIMER0_BASE, TIMER_A);
//Timer Interrupt Enable
TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
TimerIntRegister(TIMER0_BASE, TIMER_A, timer_interrupt);
while(1){
if(flag = 1){
//Reset the line read
code = 0;
//Turn on the scan for a line
if(counter == 0) GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_3, 0x8);
if(counter == 1) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x10);
if(counter == 2) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x20);
if(counter == 3) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x40);
//Check which button on the line was pressed
if(GPIOPinRead(GPIO_PORTA_BASE, GPIO_PIN_5) == 0x20) {
code = 1;
temp = log_code;
}
if(GPIOPinRead(GPIO_PORTA_BASE, GPIO_PIN_6) == 0x40) {
code = 2;
temp = log_code;
}
if(GPIOPinRead(GPIO_PORTA_BASE, GPIO_PIN_7) == 0x80) {
code = 3;
temp = log_code;
}
//Turn off the scan for a line
if(counter == 0) GPIOPinWrite(GPIO_PORTB_BASE, GPIO_PIN_3, 0x0);
if(counter == 1) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4, 0x0);
if(counter == 2) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5, 0x0);
if(counter == 3) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0x0);
//Check the next line on the next run and if overflows, reset
//Calculate the index_code for the lookup table
index_code = temp + code;
key_char = lookup_table[index_code];
log_code = log_code + 4;
if(log_code > 12){
log_code = 0;
}
counter++;
if(counter > 3) counter = 0;
if(key_char != 'x'){
//toggleLED();
putChar(key_char);
//SysCtlDelay(100000);
index_code = 0;
}
flag = 0;
}
}
}
int main(void)
{
/* FIFO Buffer */
unsigned long temp[1];
/*Set the clocking to directly run from the crystal at 8MHz*/
SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_8MHZ);
/*Enable ADC Peripheral*/
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
//Enable Timers.
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER2);
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
/* Set the clock for the GPIO Port B */
SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
/* Set the type of the GPIO Pin */
GPIOPinTypeTimer(GPIO_PORTB_BASE, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_5);
/* UART configuration */
InitConsole();
//Setting the timer for PWM
TimerConfigure(TIMER2_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_B_PWM);
TimerConfigure(TIMER1_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PWM);
TimerConfigure(TIMER0_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PWM);
/*Configure ADC Peripheral*/
ADCSequenceConfigure(ADC0_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);
/*Configure ADC Sequence*/
ADCSequenceStepConfigure(ADC0_BASE, 3, 0, ADC_CTL_CH5 | ADC_CTL_IE | ADC_CTL_END);
/*Enable ADC sequence*/
ADCSequenceEnable(ADC0_BASE, 3);
/*Clear ADC Interrupt*/
ADCIntClear(ADC0_BASE, 3);
IntMasterEnable();
TimerLoadSet(TIMER2_BASE, TIMER_B, 500);
TimerLoadSet(TIMER1_BASE, TIMER_A, 500);
TimerLoadSet(TIMER0_BASE, TIMER_A, 500);
unsigned long i,k,counter=0,i1=0;
long num1,y=0,num2,num3,j=0,sum1=0,sum2=0,sum3=0;
while(1)
{
for(i=0;i<15648;i++)
{
if(i%24 == 0)
{
ADCProcessorTrigger(ADC0_BASE, 3);
while(!ADCIntStatus(ADC0_BASE, 3, false))
{
}
ADCIntClear(ADC0_BASE, 3);
ADCSequenceDataGet(ADC0_BASE, 3, temp);
x[i/24]=temp[0];
}
}
num1=0;
num2=0;
num3=0;
n1=_IQ17(0);
n2=_IQ17(0);
n3=_IQ17(0);
for(k=0;k<652;k++)
{
l1= _IQ17(b1[k]);
l2= _IQ17(b2[k]);
l3= _IQ17(b3[k]);
m= _IQ17(x[651-k]);
n1=n1 + _IQ17mpy(l1,m);
n2=n2 + _IQ17mpy(l2,m);
n3=n3 + _IQ17mpy(l3,m);
}
num1=_IQ17int(n1);
num2=_IQ17int(n2);
num3=_IQ17int(n3);
sum1+=num1*num1;
sum2+=num2*num2;
sum3+=num3*num3;
j++;
if(j==15)
{
sum1=sum1/500;
sum2=sum2/500;
sum3=sum3/500;
r1=isqrt(sum1);
r2=isqrt(sum2);
r3=isqrt(sum3);
sum1=sum2=0;
j=0;
}
r01=r1*r1*r1;
r02=r2*r2*r2;
r03=r3*r3*r3;
if(r01>0)
{
TimerConfigure(TIMER0_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PWM);
pwm1(256-r01);
}
else
{
TimerConfigure(TIMER0_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PERIODIC);
}
if(r02>0)
{
TimerConfigure(TIMER1_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PWM);
pwm2(256-r02);
}
else
{
TimerConfigure(TIMER1_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_PERIODIC);
}
if(r03>0)
{
TimerConfigure(TIMER2_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_B_PWM);
pwm3(256-r03);
}
else
{
TimerConfigure(TIMER2_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_B_PERIODIC);
}
}
}
void joystick_init(void) {
// Register Joystick button isr
GPIOPinTypeGPIOInput(JOY_PORT, JOY_MASK);
GPIOPadConfigSet(JOY_PORT, JOY_MASK, GPIO_STRENGTH_4MA, GPIO_PIN_TYPE_STD_WPU);
GPIOIntTypeSet(JOY_PORT, JOY_MASK, GPIO_BOTH_EDGES);
GPIOPortIntRegister(JOY_PORT, button_handler);
GPIOPinIntEnable(JOY_PORT, JOY_MASK);
//
// The ADC0 peripheral must be enabled for use.
//
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);
//
// Select the analog ADC function for these pins.
//
GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_0);
GPIOPinTypeADC(GPIO_PORTD_BASE, GPIO_PIN_3);
// Use sequences 0 and 1 for x and y.
ADCSequenceConfigure(ADC0_BASE, 0, ADC_TRIGGER_PROCESSOR, 0);
ADCSequenceConfigure(ADC0_BASE, 1, ADC_TRIGGER_PROCESSOR, 0);
// Single ended sample on CH3 (X) and CH4 (Y).
ADCSequenceStepConfigure(ADC0_BASE, 0, 0, ADC_CTL_CH3 | ADC_CTL_IE | ADC_CTL_END);
ADCSequenceStepConfigure(ADC0_BASE, 1, 0, ADC_CTL_CH4 | ADC_CTL_IE | ADC_CTL_END);
// Enable the sequences.
ADCSequenceEnable(ADC0_BASE, 0);
ADCSequenceEnable(ADC0_BASE, 1);
// Register ISRs.
ADCIntRegister(ADC0_BASE, 0, x_handler);
ADCIntRegister(ADC0_BASE, 1, y_handler);
ADCIntEnable(ADC0_BASE, 0);
ADCIntEnable(ADC0_BASE, 1);
// Trigger the first conversion (auto-center)
ADCProcessorTrigger(ADC0_BASE, 0);
ADCProcessorTrigger(ADC0_BASE, 1);
// Configure timer
SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER3);
TimerConfigure(JOY_TIMER, TIMER_CFG_PERIODIC);
//Register Jog Z buttons
GPIOPinTypeGPIOInput(JOG_Z_PORT, JOG_Z_MASK);
GPIOIntTypeSet(JOG_Z_PORT, JOG_Z_MASK, GPIO_BOTH_EDGES);
GPIOPortIntRegister(JOG_Z_PORT, jog_z_handler);
GPIOPinIntEnable(JOG_Z_PORT, JOG_Z_MASK);
GPIOPadConfigSet(JOG_Z_PORT,JOG_Z_MASK,GPIO_STRENGTH_2MA,GPIO_PIN_TYPE_STD_WPD);
// Create a 10ms timer callback
TimerLoadSet64(JOY_TIMER, SysCtlClockGet() / 500);
TimerIntRegister(JOY_TIMER, TIMER_A, joystick_isr);
TimerIntEnable(JOY_TIMER, TIMER_TIMA_TIMEOUT);
IntPrioritySet(INT_TIMER3A, CONFIG_JOY_PRIORITY);
TimerEnable(JOY_TIMER, TIMER_A);
}