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| 1 | /* Defines the base address of the memories and peripherals */ | |
| 2 | #include "../../../inc/hw_memmap.h" | |
| 3 | ||
| 4 | /* Defines the common types and macros */ | |
| 5 | #include "../../../inc/hw_types.h" | |
| 6 | ||
| 7 | #include "../../../inc/hw_timer.h" | |
| 8 | ||
| 9 | #include "../../../driverlib/pin_map.h" | |
| 10 | ||
| 11 | /* Defines and Macros for GPIO API */ | |
| 12 | #include "../../../driverlib/gpio.h" | |
| 13 | ||
| 14 | /* Prototypes for the system control driver */ | |
| 15 | #include "../../../driverlib/sysctl.h" | |
| 16 | ||
| 17 | #include "../../../driverlib/adc.h" | |
| 18 | ||
| 19 | #include "../../../driverlib/uart.h" | |
| 20 | ||
| 21 | #include "../../../driverlib/interrupt.h" | |
| 22 | ||
| 23 | #include "../../../driverlib/uartstdio.h" | |
| 24 | ||
| 25 | #include "driverlib/timer.h" | |
| 26 | ||
| 27 | ||
| 28 | ||
| 29 | ||
| 30 | ||
| 31 | void UartInit(void) | |
| 32 | {
| |
| 33 | // Enable GPIO port A which is used for UART0 pins. | |
| 34 | SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA); | |
| 35 | SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0); | |
| 36 | ||
| 37 | /* Make the UART pins be peripheral controlled. */ | |
| 38 | GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1); | |
| 39 | ||
| 40 | // Initialize the UART for console I/O. | |
| 41 | UARTStdioInit(0); | |
| 42 | } | |
| 43 | ||
| 44 | void TimerInit(void) | |
| 45 | {
| |
| 46 | /* The Timer0 peripheral must be enabled for use. */ | |
| 47 | SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0); | |
| 48 | ||
| 49 | ||
| 50 | SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC); | |
| 51 | ||
| 52 | ||
| 53 | // GPIOPinConfigure(CCP1_PIN); | |
| 54 | ||
| 55 | ||
| 56 | GPIOPinTypeTimer(GPIO_PORTC_BASE, GPIO_PIN_5); | |
| 57 | ||
| 58 | // Configure Timer0B as a 16-bit periodic timer. | |
| 59 | TimerConfigure(TIMER0_BASE, TIMER_CFG_B_PWM | TIMER_CFG_B_PERIODIC); | |
| 60 | ||
| 61 | // Set the Timer0B load value to 1ms. | |
| 62 | TimerLoadSet(TIMER0_BASE, TIMER_B, SysCtlClockGet()); | |
| 63 | ||
| 64 | // Set the Timer0B match value to load value / 3. | |
| 65 | TimerMatchSet(TIMER0_BASE, TIMER_B, TimerLoadGet(TIMER0_BASE, TIMER_B) / 3); | |
| 66 | ||
| 67 | /* Control the Timer Level */ | |
| 68 | //TimerControlLevel(TIMER0_BASE, TIMER_B, true); | |
| 69 | ||
| 70 | /* Enable Timer0B. */ | |
| 71 | TimerEnable(TIMER0_BASE, TIMER_B); | |
| 72 | ||
| 73 | } | |
| 74 | ||
| 75 | int main(void) | |
| 76 | {
| |
| 77 | /*Set the clocking to directly run from the crystal at 7.37MHz*/ | |
| 78 | SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN | SYSCTL_XTAL_7_37MHZ); | |
| 79 | ||
| 80 | /* UART config */ | |
| 81 | UartInit(); | |
| 82 | ||
| 83 | TimerInit(); | |
| 84 | ||
| 85 | ||
| 86 | while(1) | |
| 87 | {
| |
| 88 | UARTprintf("Timer %40d\r",TimerValueGet(TIMER0_BASE, TIMER_B));
| |
| 89 | SysCtlDelay(SysCtlClockGet()/12); | |
| 90 | ||
| 91 | } | |
| 92 | ||
| 93 | } |
