//*****************************************************************************
void
PinMuxConfig(void)
{
//
// Enable Peripheral Clocks
//
MAP_PRCMPeripheralClkEnable(PRCM_UARTA0, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA2, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_TIMERA3, PRCM_RUN_MODE_CLK);
//
// Configure PIN_55 for UART0 UART0_TX
//
MAP_PinTypeUART(PIN_55, PIN_MODE_3);
//
// Configure PIN_57 for UART0 UART0_RX
//
MAP_PinTypeUART(PIN_57, PIN_MODE_3);
//
// Configure PIN_58 for GPIOInput
//
MAP_PinTypeGPIO(PIN_58, PIN_MODE_0, false);
MAP_GPIODirModeSet(GPIOA0_BASE, 0x8, GPIO_DIR_MODE_IN);
//
// Configure PIN_64 for GPIOOutput
//
MAP_PinTypeGPIO(PIN_64, PIN_MODE_0, false);
MAP_GPIODirModeSet(GPIOA1_BASE, 0x2, GPIO_DIR_MODE_OUT);
//
// Configure PIN_15 for GPIO Input
//
MAP_PinTypeGPIO(PIN_15, PIN_MODE_0, false);
MAP_GPIODirModeSet(GPIOA2_BASE, 0x40, GPIO_DIR_MODE_IN);
//
// Configure PIN_02 for TIMERPWM7 GT_PWM07
//
MAP_PinTypeTimer(PIN_02, PIN_MODE_3);
}
//*****************************************************************************
void
PinMuxConfig(void)
{
//
// Enable Peripheral Clocks
//
MAP_PRCMPeripheralClkEnable(PRCM_UARTA0, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA0, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_GPIOA1, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_TIMERA2, PRCM_RUN_MODE_CLK);
MAP_PRCMPeripheralClkEnable(PRCM_I2CA0, PRCM_RUN_MODE_CLK);
//
// Configure PIN_55 for UART0 UART0_TX
//
MAP_PinTypeUART(PIN_55, PIN_MODE_3);
//
// Configure PIN_57 for UART0 UART0_RX
//
MAP_PinTypeUART(PIN_57, PIN_MODE_3);
//
// Configure PIN_58 for GPIOInput
//
MAP_PinTypeGPIO(PIN_58, PIN_MODE_0, false);
MAP_GPIODirModeSet(GPIOA0_BASE, 0x8, GPIO_DIR_MODE_IN);
//
// Configure PIN_64 for PWM
//
MAP_PinTypeTimer(PIN_64, PIN_MODE_3);
//I2C
MAP_PinTypeI2C(PIN_01, PIN_MODE_1);
MAP_PinTypeI2C(PIN_02, PIN_MODE_1);
}
void PWMWrite(uint8_t pin, uint32_t analog_res, uint32_t duty, uint32_t freq)
{
analog_res = analog_res * 1000;
freq;
uint32_t load = (F_CPU / freq) * 1000;
uint32_t match = load / (analog_res / duty);
match = match;
load = load / 1000;
uint16_t prescaler = load >> 16;
uint16_t prescaler_match = match >> 16;
uint8_t timer = digitalPinToTimer(pin);
if(timer == NOT_ON_TIMER)
return;
MAP_PRCMPeripheralClkEnable(PRCM_TIMERA0 + (timer/2), PRCM_RUN_MODE_CLK);
uint16_t pnum = digitalPinToPinNum(pin);
switch(timer) {
/* PWM0/1 */
case TIMERA0A:
case TIMERA0B:
MAP_PinTypeTimer(pnum, PIN_MODE_5);
break;
/* PWM2/3 */
case TIMERA1A:
case TIMERA1B:
MAP_PinTypeTimer(pnum, PIN_MODE_9);
break;
/* PWM4/5 */
case TIMERA2A:
case TIMERA2B:
MAP_PinTypeTimer(pnum, PIN_MODE_3);
break;
/* PWM6/7 */
case TIMERA3A:
case TIMERA3B:
MAP_PinTypeTimer(pnum, PIN_MODE_3);
break;
}
uint32_t base = TIMERA0_BASE + ((timer/2) << 12);
/* FIXME: If B is already opperational and configure A, B get's messed up. */
MAP_TimerConfigure(base, TIMER_CFG_SPLIT_PAIR | TIMER_CFG_A_PWM | TIMER_CFG_B_PWM);
uint16_t timerab = timer % 2 ? TIMER_B : TIMER_A;
MAP_TimerPrescaleSet(base, timerab, prescaler);
MAP_TimerPrescaleMatchSet(base, timerab, prescaler_match);
MAP_TimerControlLevel(base, timerab, 1);
MAP_TimerLoadSet(base, timerab, load);
MAP_TimerMatchSet(base, timerab, match);
MAP_TimerEnable(base, timerab);
}
