void Timer0IntHandler(void){
// Used to countdown from entered time
// Clear the timer interrupt.
ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
// Check if time has been reached
if(g_countdownTime == 0){
ROM_IntMasterDisable();
UARTprintf("Time's Up!\n\n");
ROM_IntMasterEnable();
ROM_TimerEnable(TIMER1_BASE, TIMER_A);
ROM_TimerIntDisable(TIMER0_BASE, TIMER_A);
return;
}
// Turn on LED
ROM_GPIOPinWrite(GPIO_PORTF_BASE, LED_RED, LED_RED);
ROM_TimerEnable(TIMER2_BASE, TIMER_A);
// Update the interrupt status on the display.
ROM_IntMasterDisable();
UARTprintf(" %i\n",g_countdownTime);
ROM_IntMasterEnable();
// Decrement counter
g_countdownTime--;
// Turn off LED
//ROM_GPIOPinWrite(GPIO_PORTF_BASE, LED_RED, 0);
}
//*****************************************************************************
//
// The interrupt handler for the first timer interrupt.
//
//*****************************************************************************
void
Timer0IntHandler(void)
{
char cOne, cTwo;
//
// Clear the timer interrupt.
//
ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
//
// Toggle the flag for the first timer.
//
HWREGBITW(&g_ui32Flags, 0) ^= 1;
//
// Use the flags to Toggle the LED for this timer
//
GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1, g_ui32Flags << 1);
//
// Update the interrupt status on the display.
//
ROM_IntMasterDisable();
cOne = HWREGBITW(&g_ui32Flags, 0) ? '1' : '0';
cTwo = HWREGBITW(&g_ui32Flags, 1) ? '1' : '0';
UARTprintf("\rT1: %c T2: %c", cOne, cTwo);
ROM_IntMasterEnable();
}
//*****************************************************************************
//
// This example application demonstrates the use of the timers to generate
// periodic interrupts.
//
//*****************************************************************************
int
main(void)
{
//
// Set the clocking to run directly from the crystal.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Initialize the UART and write status.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
UARTStdioInit(0);
UARTprintf("\033[2JTimers example\n");
UARTprintf("T1: 0 T2: 0");
//
// Enable the peripherals used by this example.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
//
// Enable processor interrupts.
//
ROM_IntMasterEnable();
//
// Configure the two 32-bit periodic timers.
//
ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet());
ROM_TimerLoadSet(TIMER1_BASE, TIMER_A, ROM_SysCtlClockGet() / 2);
//
// Setup the interrupts for the timer timeouts.
//
ROM_IntEnable(INT_TIMER0A);
ROM_IntEnable(INT_TIMER1A);
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
//
// Enable the timers.
//
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
ROM_TimerEnable(TIMER1_BASE, TIMER_A);
//
// Loop forever while the timers run.
//
while(1)
{
}
}
//*****************************************************************************
//
// This function is called to start an acquisition running. It determines
// which channels are to be logged, enables the ADC sequencers, and computes
// the first RTC match value. This will start the acquisition running.
//
//*****************************************************************************
void AcquireStart()
{
unsigned long ulIdx;
ulIdx = ulSelectedMask;
g_ulNumItems = 0;
while(ulIdx)
{
if(ulIdx & 1)
{
g_ulNumItems++;
}
ulIdx >>= 1;
}
//USBStickOpenLogFile(0);
ROM_ADCSequenceEnable(ADC0_BASE,SEQUENCER);
//ROM_ADCSequenceDataGet(ADC0_BASE,SEQUENCER,&g_ulADCData[0]);
ROM_ADCIntClear(ADC0_BASE,SEQUENCER);
ROM_ADCIntEnable(ADC0_BASE,SEQUENCER);
ROM_IntEnable(INT_ADC0SS2);
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
//ROM_IntEnable(INT_TIMER1A);
//ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
//ROM_TimerEnable(TIMER1_BASE, TIMER_A);
ROM_IntMasterEnable();
}
void board_init(void) {
uint32_t clockfreq;
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
board_configure_led();
console_init();
board_spi_init();
board_systick_init();
board_watchdog_init();
timer_example_timer_init();
clockfreq = ROM_SysCtlClockGet();
delayloopspermicrosecond = (ROM_SysCtlClockGet() / (uint32_t) 1e6) / 3;
delayloopspermillisecond = (ROM_SysCtlClockGet() / (uint32_t) 1e3) / 3;
console_printtext("\n\n\n***** TM4C scheduler *****\n");
console_printtext("** System clock: %d MHz **\n", ROM_SysCtlClockGet() / (uint32_t) 1e6);
console_printtext("* Type 'help' for commands *\n");
if (clockfreq < 3e6)
console_printtext("WARNING: System clock is below 3 MHz, board timing might be inaccurate!\n");
else
console_printtext("\n");
ROM_IntMasterEnable();
}
void setup() {
ROM_SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);
ROM_FPULazyStackingEnable();
ROM_FPUEnable();
uart_setup();
sd_init();
dac_setup();
keycontrol_setup();
initConfig();
tick_setup();
soundoutcontrol_setup();
setupADC();
setupUSBStore();
initSampleBlocks();
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_IntMasterEnable();
DEBUG_PRINT("Setup complete\n", NULL);
}
//*****************************************************************************
//
// Given a destination buffer and a tStat pointer, this function will produce a
// formatted "request string" that can be used in the Exosite_Write function.
//
//*****************************************************************************
void
StatRequestFormat(tStat *psStat, char *pcRequestBuffer)
{
if((psStat->eValueType) == STRING)
{
//
// Disable interrupts to avoid changes to the string during the copy
// operation.
//
ROM_IntMasterDisable();
usprintf(pcRequestBuffer, "%s=%s",
psStat->pcCloudAlias,
StatStringVal(*psStat));
ROM_IntMasterEnable();
}
else if((psStat->eValueType) == INT)
{
usprintf(pcRequestBuffer, "%s=%d",
psStat->pcCloudAlias,
StatIntVal(*psStat));
}
else if((psStat->eValueType) == HEX)
{
usprintf(pcRequestBuffer, "%s=0x%x",
psStat->pcCloudAlias,
StatIntVal(*psStat));
}
}
// * enc_2_int_init ***********************************************************
// * setup interrupt from qei *
// * Assumes system clock already configured *
// ****************************************************************************
void enc_2_int_init(void)
{
ROM_IntMasterEnable(); // enable NVIC interrupts
ROM_QEIIntEnable(ENC_2_BASE, ENC_2_INT_FLAGS); // enable interrupt signal(s)
ROM_IntEnable(ENC_2_INTVECT); // enable NVIC vector for our module
// interrupt now active, remember to clear on interrupt
}
//Initialize as a slave
void TwoWire::begin(uint8_t address)
{
if(i2cModule == NOT_ACTIVE) {
i2cModule = BOOST_PACK_WIRE;
}
ROM_SysCtlPeripheralEnable(g_uli2cPeriph[i2cModule]);
ROM_GPIOPinConfigure(g_uli2cConfig[i2cModule][0]);
ROM_GPIOPinConfigure(g_uli2cConfig[i2cModule][1]);
ROM_GPIOPinTypeI2C(g_uli2cBase[i2cModule], g_uli2cSDAPins[i2cModule]);
ROM_GPIOPinTypeI2CSCL(g_uli2cBase[i2cModule], g_uli2cSCLPins[i2cModule]);
slaveAddress = address;
//Enable slave interrupts
ROM_IntEnable(g_uli2cInt[i2cModule]);
I2CSlaveIntEnableEx(SLAVE_BASE, I2C_SLAVE_INT_DATA | I2C_SLAVE_INT_STOP);
HWREG(SLAVE_BASE + I2C_O_SICR) =
I2C_SICR_DATAIC | I2C_SICR_STARTIC | I2C_SICR_STOPIC;
//Setup as a slave device
ROM_I2CMasterDisable(MASTER_BASE);
I2CSlaveEnable(SLAVE_BASE);
I2CSlaveInit(SLAVE_BASE, address);
ROM_IntMasterEnable();
}
/**
* Initalize the RS232 port.
*
*/
void
uart0_init(unsigned long ubr)
{
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
//
// Enable the GPIO port that is used for the on-board LED.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
//
// Enable the GPIO pins for the LED (PF2).
//
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_2);
ROM_IntMasterEnable();
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
ROM_IntEnable(INT_UART0);
ROM_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
}
void timerInit()
{
#if F_CPU >= 80000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_2_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 50000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 40000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 25000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_8|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 16200000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1|SYSCTL_USE_OSC|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN); //NOT PLL
#elif F_CPU >= 16100000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1|SYSCTL_USE_OSC|SYSCTL_OSC_INT|
SYSCTL_OSC_MAIN); //NOT PLL, INT OSC
#elif F_CPU >= 16000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_12_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 10000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_20|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#elif F_CPU >= 8000000
ROM_SysCtlClockSet(SYSCTL_SYSDIV_25|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#else
ROM_SysCtlClockSet(SYSCTL_SYSDIV_2_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
#endif
//
// SysTick is used for delay() and delayMicroseconds()
//
// ROM_SysTickPeriodSet(0x00FFFFFF);
ROM_SysTickPeriodSet(ROM_SysCtlClockGet() / TICKS_PER_SECOND);
ROM_SysTickEnable();
//
//Initialize Timer5 to be used as time-tracker since beginning of time
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER5); //not tied to launchpad pin
ROM_TimerConfigure(TIMER5_BASE, TIMER_CFG_PERIODIC_UP);
ROM_TimerLoadSet(TIMER5_BASE, TIMER_A, ROM_SysCtlClockGet()/1000);
ROM_IntEnable(INT_TIMER5A);
ROM_TimerIntEnable(TIMER5_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerEnable(TIMER5_BASE, TIMER_A);
ROM_IntMasterEnable();
}
// Start the timers and interrupt frequency
void servoStart(void) {
ROM_SysCtlPeripheralEnable(SERVO_TIMER_PERIPH);
ROM_IntMasterEnable();
ROM_TimerConfigure(SERVO_TIMER, TIMER_CFG_PERIODIC);
ROM_TimerLoadSet(SERVO_TIMER, SERVO_TIMER_A, (ROM_SysCtlClockGet() / 1000000) * SERVO_TIMER_RESOLUTION);
ROM_IntEnable(SERVO_TIMER_INTERRUPT);
ROM_TimerIntEnable(SERVO_TIMER, SERVO_TIMER_TRIGGER);
ROM_TimerEnable(SERVO_TIMER, SERVO_TIMER_A);
}
// * svm_int_init *************************************************************
// * setup counter reload interrupt from pwm generator for svm *
// * Assumes system clock already configured *
// ****************************************************************************
void svm_int_init(void)
{
ROM_IntMasterEnable(); // enable NVIC interrupts
ROM_PWMIntEnable(SVM_PWM_BASE, SVM_PWM_INT_GEN); // enable interrupt assertion from our specific generator in module
ROM_PWMGenIntTrigEnable(SVM_PWM_BASE, SVM_PWM_GEN, PWM_INT_CNT_LOAD);
// enable counter load interrupt from our generator
ROM_IntEnable(SVM_PWM_GEN_INTVECT); // enable NVIC vector for our generator
// load interrupt for our generator is now active
}
//*****************************************************************************
//
// PoC2Repeater
//
//*****************************************************************************
int
main(void)
{
// Set the clocking to run directly from the crystal at 120MHz.
g_ui32SysClock = MAP_SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |
SYSCTL_OSC_MAIN |
SYSCTL_USE_PLL |
SYSCTL_CFG_VCO_480), 120000000);
// Enable the peripherals
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART7);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOJ);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPION);
// Enable the GPIO pins for the LEDs (PN0 and PN1).
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_0);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTN_BASE, GPIO_PIN_1);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_0);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_4);
// ButtonsInit
ROM_GPIODirModeSet(GPIO_PORTJ_BASE, ALL_BUTTONS, GPIO_DIR_MODE_IN);
MAP_GPIOPadConfigSet(GPIO_PORTJ_BASE, ALL_BUTTONS,
GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);
// Enable processor interrupts.
ROM_IntMasterEnable();
// Set GPIO PC4 and PC5 as UART pins.
GPIOPinConfigure(GPIO_PC4_U7RX);
GPIOPinConfigure(GPIO_PC5_U7TX);
ROM_GPIOPinTypeUART(GPIO_PORTC_BASE, GPIO_PIN_4 | GPIO_PIN_5);
// Configure the UART for 115,200, 8-N-1 operation.
ROM_UARTConfigSetExpClk(UART7_BASE, g_ui32SysClock, 115200,
(UART_CONFIG_WLEN_8 |
UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
// Enable the UART interrupt.
ROM_IntEnable(INT_UART7);
ROM_UARTIntEnable(UART7_BASE, UART_INT_RX | UART_INT_RT);
// Reset message info
for(uint8_t i = 0; i < MSG; i++)
message[i] = 0;
// Loop forever echoing data through the UART.
while(1)
{
}
}
//*****************************************************************************
//
// Delay for 5 us.
//
//*****************************************************************************
void delayFiveMicroseconds(uint32_t g_ui32SysClock) {
//
// Delay for 5 us. The value of the number provided to SysCtlDelay
// is the number of loops (3 assembly instructions each) to iterate through.
// Interrupts are disabled temporarily to ensure the pulse length is 5us.
//
ROM_IntMasterDisable();
ROM_SysCtlDelay(g_ui32SysClock / 3 / 200000);
ROM_IntMasterEnable();
}
ServoClass::ServoClass()
{
ROM_SysCtlClockSet(SYSCTL_SYSDIV_2_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
SYSCTL_OSC_MAIN);
// Initialize variables of the class
g_ulPeriod = 0;
for(int il_iter = 0; il_iter < SERVOS_PER_TIMER; il_iter++)
{
g_ulServoPins[il_iter] = INVALID_SERVO_PIN;
g_ulServoPulse[il_iter] = DEFAULT_SERVO_PULSE_WIDTH;
}
g_iServoNo = 0;
g_ulPulseWidth = 0;
g_ulTicksPerMicrosecond = 0;
setRefresh();
// for(int il_iter = 0; il_iter < SERVOS_PER_TIMER; il_iter++)
// {
// if (g_ulServoPins[il_iter] != INVALID_SERVO_PIN)
// {
// pinMode(g_ulServoPins[il_iter], OUTPUT);
// digitalWrite(g_ulServoPins[il_iter], LOW);
// }
// }
// Enable TIMER
ROM_SysCtlPeripheralEnable(SERVO_TIMER_PERIPH);
// Enable processor interrupts.
ROM_IntMasterEnable();
// Configure the TIMER
ROM_TimerConfigure(SERVO_TIMER, SERVO_TIME_CFG);
// Calculate the number of timer counts/microsecond
g_ulTicksPerMicrosecond = ROM_SysCtlClockGet() / 1000000;
g_ulPeriod = g_ulTicksPerMicrosecond * REFRESH_INTERVAL; // 20ms = Standard Servo refresh delay
// Initially load the timer with 20ms interval time
ROM_TimerLoadSet(SERVO_TIMER, SERVO_TIMER_A, g_ulPeriod);
// Setup the interrupt for the TIMER1A timeout.
ROM_IntEnable(SERVO_TIMER_INTERRUPT);
ROM_TimerIntEnable(SERVO_TIMER, SERVO_TIMER_TRIGGER);
// Enable the timer.
ROM_TimerEnable(SERVO_TIMER, SERVO_TIMER_A);
}
void setup()
{
//--------------------- GENERAL ---------------------
// Enable lazy stacking for interrupt handlers. This allows floating-point
// instructions to be used within interrupt handlers, but at the expense of
// extra stack usage.
ROM_FPUEnable();
ROM_FPULazyStackingEnable();
// Set the clocking to run directly from the crystal.
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
ROM_IntMasterEnable();
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTA_BASE, GPIO_PIN_6);
//--------------------- UART ---------------------
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
// Configure the UART for 115,200, 8-N-1 operation.
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE));
// Enable the UART interrupt.
ROM_IntEnable(INT_UART0);
ROM_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
//--------------------- SSI ---------------------
SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI0);
GPIOPinConfigure(GPIO_PA2_SSI0CLK);
GPIOPinConfigure(GPIO_PA3_SSI0FSS);
GPIOPinConfigure(GPIO_PA4_SSI0RX);
GPIOPinConfigure(GPIO_PA5_SSI0TX);
GPIOPinTypeSSI(GPIO_PORTA_BASE, GPIO_PIN_5 | GPIO_PIN_4 | GPIO_PIN_3 | GPIO_PIN_2);
SSIConfigSetExpClk(SSI0_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0, SSI_MODE_MASTER, 10000, 8);
SSIEnable(SSI0_BASE);
}
//*****************************************************************************
//
// This example demonstrates how to send a string of data to the UART.
//
//*****************************************************************************
int
main(void)
{
//
// Set the clocking to run directly from the crystal.
//
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
//
// Enable the peripherals used by this example.
//
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
//
// Enable processor interrupts.
//
ROM_IntMasterEnable();
//
// Set GPIO A0 and A1 as UART pins.
//
GPIOPinConfigure(GPIO_PA0_U0RX);
GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Configure the UART for 115,200, 8-N-1 operation.
//
ROM_UARTConfigSetExpClk(UART0_BASE, ROM_SysCtlClockGet(), 115200,
(UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE |
UART_CONFIG_PAR_NONE));
//
// Enable the UART interrupt.
//
ROM_IntEnable(INT_UART0);
ROM_UARTIntEnable(UART0_BASE, UART_INT_RX | UART_INT_RT);
//
// Prompt for text to be entered.
//
UARTSend((unsigned char *)"\033[2JEnter text: ", 16);
//
// Loop forever echoing data through the UART.
//
while(1)
{
}
}
//函数创建区
//----------------------------------------Start-------------------------------------------
void Init_Timer()
{
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet()/100);//10ms周期中断,由100决定 如果为1为1s定时
GPIOIntRegister(INT_TIMER0A, Timer0AIntHandler);
ROM_IntEnable(INT_TIMER0A);
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
ROM_IntMasterEnable();
}
// Main ----------------------------------------------------------------------------------------------
int main(void){
// Enable lazy stacking
ROM_FPULazyStackingEnable();
// Set the clocking to run directly from the crystal.
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);
// Initialize the UART and write status.
ConfigureUART();
UARTprintf("Timers example\n");
// Enable LEDs
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, LED_RED|LED_BLUE|LED_GREEN);
// Enable the peripherals used by this example.
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER2);
// Enable processor interrupts.
ROM_IntMasterEnable();
// Configure the two 32-bit periodic timers.
ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
ROM_TimerConfigure(TIMER2_BASE, TIMER_CFG_PERIODIC);
ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet());
ROM_TimerLoadSet(TIMER1_BASE, TIMER_A, ROM_SysCtlClockGet()*2); // Blue should blink 2 times as much as red
ROM_TimerLoadSet(TIMER2_BASE, TIMER_A, ROM_SysCtlClockGet()*3); // Green should blink 3 times as much as red
// Setup the interrupts for the timer timeouts.
ROM_IntEnable(INT_TIMER0A);
ROM_IntEnable(INT_TIMER1A);
ROM_IntEnable(INT_TIMER2A);
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerIntEnable(TIMER2_BASE, TIMER_TIMA_TIMEOUT);
// Enable the timers.
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
ROM_TimerEnable(TIMER1_BASE, TIMER_A);
ROM_TimerEnable(TIMER2_BASE, TIMER_A);
// Loop forever while the timers run.
while(1){}
}
/****************************************************************
* This interrupt handler is set up by AcquireInit to check
* for the events that begin a data logging. This is when the voltage
* exceeds a changeable threshold or
* the accelerometer z-axis changes g by more than 0.5.
*****************************************************************/
void MonitorShockISR() {
ROM_TimerIntClear(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
//
// Toggle the flag for the second timer.
//
HWREGBITW(&g_ui32Flags, 1) ^= 1;
// If ADC has not converted yet, exit ISR.
if (!ADCIntStatus(ADC1_BASE, 3, false)) {
return;
}
ADCIntClear(ADC1_BASE, 3);
ADCSequenceDataGet(ADC1_BASE, 3, puiADC1Buffer);
ADCProcessorTrigger(ADC1_BASE, 3);
if (first_entry) {
first_entry = false;
prev1_value = ReadAccel(puiADC1Buffer[0]);
} else {
puiADC1Buffer[0] = ReadAccel(puiADC1Buffer[0]);
// Shock monitor detects a change of more than 2.4g
if (abs((int)puiADC1Buffer[0] - prev1_value) > 240) {
// UARTprintf("Shock! : %d \r",puiADC1Buffer[0]);
MonitorStop();
// Start LED
ROM_TimerEnable(TIMER2_BASE, TIMER_A);
// Start logging waveform.
ROM_IntMasterDisable();
psuiConfig->isShocked = true;
ROM_IntMasterEnable();
} else {
ROM_IntMasterDisable();
psuiConfig->isShocked = false;
ROM_IntMasterEnable();
}
prev1_value = puiADC1Buffer[0];
}
}
// Main ----------------------------------------------------------------------------------------------
int main(void){
// Enable lazy stacking
ROM_FPULazyStackingEnable();
// Set the clocking to run directly from the crystal.
ROM_SysCtlClockSet(SYSCTL_SYSDIV_4|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);
// Initialize the UART and write status.
ConfigureUART();
UARTprintf("--Countdown Example--\n");
// Initialize LEDs
ConfigureLEDs();
// Enable the peripherals used by this example.
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER2);
// Enable processor interrupts.
ROM_IntMasterEnable();
// Configure the two 32-bit periodic timers.
ROM_TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);
ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_PERIODIC);
ROM_TimerConfigure(TIMER2_BASE, TIMER_CFG_ONE_SHOT);
ROM_TimerLoadSet(TIMER0_BASE, TIMER_A, ROM_SysCtlClockGet());
ROM_TimerLoadSet(TIMER1_BASE, TIMER_A, ROM_SysCtlClockGet()/20);
ROM_TimerLoadSet(TIMER2_BASE, TIMER_A, ROM_SysCtlClockGet()/10);
// Setup the interrupts for the timer timeouts.
ROM_IntEnable(INT_TIMER0A);
ROM_IntEnable(INT_TIMER1A);
ROM_IntEnable(INT_TIMER2A);
ROM_TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
ROM_TimerIntEnable(TIMER2_BASE, TIMER_TIMA_TIMEOUT);
// Enable the timers.
ROM_TimerEnable(TIMER0_BASE, TIMER_A);
UARTprintf("Time Left: \n");
// Loop forever while the timers run.
while(1){}
}
void
HardwareSerial::begin(unsigned long baud)
{
//
// Initialize the UART.
//
ROM_SysCtlPeripheralEnable(g_ulUARTInt[uartModule]);
//TODO:Add functionality for PinConfigure with variable uartModule
ROM_GPIOPinConfigure(GPIO_PA0_U0RX);
ROM_GPIOPinConfigure(GPIO_PA1_U0TX);
ROM_GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
//
// Only allow a single instance to be opened.
//
ASSERT(g_ulUARTBase[uartModule] == 0);
//
// Check to make sure the UART peripheral is present.
//
if(!ROM_SysCtlPeripheralPresent(g_ulUARTPeriph[uartModule]))
{
return;
}
ROM_SysCtlPeripheralEnable(g_ulUARTPeriph[uartModule]);
ROM_UARTConfigSetExpClk(g_ulUARTBase[uartModule], ROM_SysCtlClockGet(), baud,
(UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE |
UART_CONFIG_WLEN_8));
//
// Set the UART to interrupt whenever the TX FIFO is almost empty or
// when any character is received.
//
ROM_UARTFIFOLevelSet(g_ulUARTBase[uartModule], UART_FIFO_TX1_8, UART_FIFO_RX1_8);
flushAll();
ROM_UARTIntDisable(g_ulUARTBase[uartModule], 0xFFFFFFFF);
ROM_UARTIntEnable(g_ulUARTBase[uartModule], UART_INT_RX | UART_INT_RT);
ROM_IntMasterEnable();
ROM_IntEnable(g_ulUARTInt[uartModule]);
//
// Enable the UART operation.
//
ROM_UARTEnable(g_ulUARTBase[uartModule]);
}
void init_Timer1B(void)
{
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);
ROM_TimerConfigure(TIMER1_BASE, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_B_PERIODIC);
ROM_TimerLoadSet(TIMER1_BASE, TIMER_B, ROM_SysCtlClockGet() / 2000);
ROM_IntMasterEnable();
ROM_TimerIntEnable(TIMER1_BASE, TIMER_TIMB_TIMEOUT);
ROM_IntEnable(INT_TIMER1B);
timeCounter = 0;
ROM_TimerEnable(TIMER1_BASE, TIMER_B);
}
void HardwareSerial::end()
{
unsigned long ulInt = ROM_IntMasterDisable();
flushAll();
//
// If interrupts were enabled when we turned them off, turn them
// back on again.
//
if(!ulInt)
{
ROM_IntMasterEnable();
}
ROM_IntDisable(g_ulUARTInt[uartModule]);
ROM_UARTIntDisable(UART_BASE, UART_INT_RX | UART_INT_RT);
}
//*****************************************************************************
// This example demonstrates how to use serial command parser
//*****************************************************************************
int main(void)
{
// Enable lazy stacking for interrupt handlers. This allows floating-point
// instructions to be used within interrupt handlers, but at the expense of
// extra stack usage.
ROM_FPUEnable();
ROM_FPULazyStackingEnable();
// Set the clocking to run directly from the crystal.
ROM_SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |
SYSCTL_XTAL_16MHZ);
// Enable the GPIO port that is used for the on-board LED.
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
// Enable the GPIO pins for the LED (PF2).
ROM_GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_2);
// Enable the peripherals used by this example.
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
// configure UART
initUART();
// Enable processor interrupts.
ROM_IntMasterEnable();
// Prompt for text to be entered.
UARTSend((uint8_t *)"\033[2JEnter text: ", 16);
// Loop forever echoing data through the UART.
while(1)
{
//if(RingBufUsed(&g_tBuffRx) > 4)
//{
//for(int i=4; i>0; i--)
//{
//ROM_UARTCharPutNonBlocking(UART0_BASE,RingBufReadOne(&g_tBuffRx));
//}
//}
UARTParse();
}
}
//*****************************************************************************
//
// The interrupt handler for the first timer interrupt.
//
//*****************************************************************************
void
Timer0IntHandler(void)
{
//
// Clear the timer interrupt.
//
ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
//
// Toggle the flag for the first timer.
//
HWREGBITW(&g_ulFlags, 0) ^= 1;
//
// Update the interrupt status on the display.
//
ROM_IntMasterDisable();
UARTprintf("\rT1: %d T2: %d", HWREGBITW(&g_ulFlags, 0) ? 1 : 0,
HWREGBITW(&g_ulFlags, 1) ? 1 : 0);
ROM_IntMasterEnable();
}
void OneMsTaskTimer::start(uint32_t timer_index) {
uint32_t load = (F_CPU / 1000);
//// !!!! count = 0;
overflowing = 0;
// Base address for first timer
g_ulBase = getTimerBase(timerToOffset(timer_index));
timerAB = TIMER_A << timerToAB(timer_index);
//Setup interrupts for duration, interrupting at 1kHz
ROM_SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0+ timer_index);
ROM_IntMasterEnable();
ROM_TimerConfigure(g_ulBase, TIMER_CFG_PERIODIC);
ROM_TimerLoadSet(g_ulBase, TIMER_A, F_CPU/1000);
// Setup the interrupts for the timer timeouts.
TimerIntRegister(g_ulBase, TIMER_A, OneMsTaskTimer_int);
ROM_IntEnable(INT_TIMER0A+timer_index);
ROM_TimerIntEnable(g_ulBase, TIMER_TIMA_TIMEOUT);
ROM_TimerEnable(g_ulBase, TIMER_A);
}
void Timer1IntHandler(void){
// Clear the timer interrupt.
ROM_TimerIntClear(TIMER1_BASE, TIMER_TIMA_TIMEOUT);
// Toggle the flag for the second timer.
// From current understanding, XOR on the second bit of &g_ui32Flags
HWREGBITW(&g_ui32Flags, 2) ^= 1;
// Use the flags to Toggle the LED for this timer
ROM_GPIOPinWrite(GPIO_PORTF_BASE, LED_BLUE, g_ui32Flags);
// Update the interrupt status on the display.
ROM_IntMasterDisable();
if (HWREGBITW(&g_ui32Flags, 2)){
UARTprintf("BLUE LED ON\n");
} else{
UARTprintf("BLUE LED OFF\n");
}
ROM_IntMasterEnable();
}
//*****************************************************************************
//
// The interrupt handler for the first timer interrupt.
//
//*****************************************************************************
void
Timer0IntHandler(void)
{
//
// Clear the timer interrupt.
//
ROM_TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);
//
// Toggle the flag for the first timer.
//
HWREGBITW(&g_ulFlags, 0) ^= 1;
//
// Update the interrupt status on the display.
//
ROM_IntMasterDisable();
GrStringDraw(&g_sContext, (HWREGBITW(&g_ulFlags, 0) ? "1" : "0"), -1, 68,
26, 1);
ROM_IntMasterEnable();
}
