70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
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/*******************************************************************************
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* @note Copyright (C) 2018 Shanghai Panchip Microelectronics Co., Ltd.
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* All rights reserved.
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*
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* @file lib_driver_uart_pan159.c
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* @brief PAN159 hardware uart<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @history - V1.0, 2018-01-19, huoweibin, first implementation.
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*******************************************************************************/
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#include "lib_driver_uart_pan159.h"
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#include "string.h"
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uint8_t uartRcvBuffer[RX_BUF_SIZE],wptr,u8InChar,uartTxBuffer[TX_BUF_SIZE];
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uint16_t u16Count;
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uint16_t u16TxDataLen;
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/*---------------------------------------------------------------------------------------------------------*/
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/* ISR to handle UART Channel 0 interrupt event */
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/*---------------------------------------------------------------------------------------------------------*/
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void UART0_IRQHandler(void)
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{
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uint32_t u32IntSts= UART0->INTSTS;
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if(u32IntSts & UART_INTSTS_RDAINT_Msk) {
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/* Get all the input characters */
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while(UART_IS_RX_READY(UART0)) {
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/* Get the character from UART Buffer */
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if(wptr < RX_BUF_SIZE) {
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uartRcvBuffer[wptr++] = UART_READ(UART0);
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}
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else{
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wptr = 0;
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uartRcvBuffer[wptr] = UART_READ(UART0);
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}
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}
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}
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if(u32IntSts & UART_INTSTS_THREINT_Msk) {
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if(u16Count < u16TxDataLen && u16TxDataLen != 0){
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u8InChar = uartTxBuffer[u16Count++];
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UART_WRITE(UART0,u8InChar);
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if(u16Count >= u16TxDataLen){
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u16TxDataLen = 0;
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u16Count = 0;
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UART_DISABLE_INT(UART0,UART_INTEN_THREIEN_Msk);
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}
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}
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}
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}
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void uart_init_pan159(void)
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{
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CLK_EnableModuleClock(UART0_MODULE);
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// SYS->P4_MFP = SYS_MFP_P46_UART1_RXD | SYS_MFP_P47_UART1_TXD;
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SYS->P5_MFP = SYS_MFP_P51_UART0_RXD | SYS_MFP_P50_UART0_TXD;
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GPIO_ENABLE_DIGITAL_PATH(P5,(1<<1));
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// UART_Open(UART1, 115200);
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UART_Open(UART0, 115200);
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UART_ENABLE_INT(UART0, (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk /*| UART_INTEN_THREIEN_Msk*/));
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NVIC_EnableIRQ(UART0_IRQn);
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}
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void uart_send(uint8_t *buff,uint16_t len)
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{
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u16TxDataLen = len;
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u16Count = 0;
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memcpy(&uartTxBuffer[0],&buff[0],len);
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UART_ENABLE_INT(UART0,UART_INTEN_THREIEN_Msk);
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}
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