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void UART0_Init() {

/* UART???HIRC?????? */

CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_S_Msk) | CLK_CLKSEL1_UART_S_HIRC;

/* ???UART0 IP????? */

CLK->APBCLK |= CLK_APBCLK_UART0_EN;

/* PB13????UART0 ?????PB14????UART0???? */

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);

/* Init UART0 */ UART_Open(UART0, 115200);

/*???????????8bit????????У?飬1????λ*/

/*?????UART1????????9600?????????8bit??1????λ???У??*/

UART_SetLine_Config(UART1, 9600, UART_WORD_LEN_8, UART_PARITY_EVEN, UART_STOP_BIT_1);

}

UART_Open?????UART?????????????????
??????????????UART_WRITE(UART0, 0x31)????UART TX???????0x31??????????printf????????keil project?м???retarget.c??????????????#define DEBUG_PORT UART0????printf?????UART??????
?????????ж??????????????????

void UART0_Init() {

/* ???UART???? */

CLK->CLKSEL1 = (CLK->CLKSEL1 & ~CLK_CLKSEL1_UART_S_Msk) | CLK_CLKSEL1_UART_S_HIRC;

/* ???UART0 IP????? */

CLK->APBCLK |= CLK_APBCLK_UART0_EN;

/* PB13????UART0 ?????PB14????UART0???? */

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);

/* Init UART0 */ UART_Open(UART0, 115200);

/*???????????8bit????????У?飬1????λ*/

/*?????UART1????????9600?????????8bit??1????λ???У??*/

UART_SetLine_Config(UART1, 9600, UART_WORD_LEN_8, UART_PARITY_EVEN, UART_STOP_BIT_1); /*?????????????40????λ??????*/ UART_SetTimeoutCnt(UART0, 40); /*???????FIFO?????????14B*/ UART_SET_RX_FIFO_INTTRGLV(UART0, UART_TLCTL_RFITL_14BYTES);

/*??????FIFO ????ж??????????ж?*/

UART_ENABLE_INT(UART0, (UART_IER_RDA_IE_Msk | UART_IER_RTO_IE_Msk)); NVIC_EnableIRQ(UART0_IRQn);

}

/*UART0?ж????????*/

void UART0_IRQHandler(void) {

uint8_t u8InChar=0xFF;

uint32_t u32IntSts= UART0->ISR;

/*???????????ж??????????ж?*/

if(u32IntSts & (UART_ISR_RDA_IS_Msk| UART_ISR_RTO_IS_Msk))

{ /* ???????FIFO?????е?????????????FIFO??? */

while(UART_GET_RX_EMPTY(UART0)==0) {

/* ?????FIFO?ж???????? */

u8InChar = UART_READ(UART0);

}

}

}