/* Select IP clock source */
CLK->CLKSEL1 &= ~CLK_CLKSEL1_UART_S_Msk;
CLK->CLKSEL1 |= (0x0 << CLK_CLKSEL1_UART_S_Pos);// Clock source from external 12 MHz or 32 KHz crystal clock
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate PllClock, SystemCoreClock and CycylesPerUs automatically. */
SystemCoreClockUpdate();
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set PB multi-function pins for UART0 RXD and TXD */
SYS->PB_H_MFP &= ~(SYS_PB_H_MFP_PB13_MFP_Msk | SYS_PB_H_MFP_PB14_MFP_Msk);
SYS->PB_H_MFP |= (SYS_PB_H_MFP_PB13_MFP_UART0_RX | SYS_PB_H_MFP_PB14_MFP_UART0_TX);
/*---------------------------------------------------------------------------------------------------------*/
/* MAIN function */
/*---------------------------------------------------------------------------------------------------------*/
int main (void)
{
int32_t i32Err,uu;
/* Init System, IP clock and multi-function I/O */
SYS_Init(); //In the end of SYS_Init() will issue SYS_LockReg() to lock protected register. If user want to write protected register, please issue SYS_UnlockReg() to unlock protected register.
PD11 = 0 ;
TIMER_Open(TIMER0, TIMER_PERIODIC_MODE, 1000000);
TIMER_SET_PRESCALE_VALUE(TIMER0, 11);
// Set compare value as large as possible, so don't need to worry about counter overrun too frequently.
TIMER_SET_CMP_VALUE(TIMER0, 0xFFFFFF);
TIMER_EnableCapture(TIMER0, TIMER_CAPTURE_TRIGGER_COUNTING_MODE, TIMER_CAPTURE_RISING_THEN_FALLING_EDGE);
GPIO_SetMode(PD,BIT11,GPIO_PMD_OUTPUT);
GPIO_ENABLE_PULL_UP(PD,BIT11);
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