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150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/********************************** (C) COPYRIGHT *******************************
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* File Name : CH58x_uart2.c
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* Author : WCH
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* Version : V1.2
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* Date : 2021/11/17
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* Description
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*******************************************************************************/
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#include "CH58x_common.h"
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/*********************************************************************
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* @fn UART2_DefInit
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*
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* @brief <20><><EFBFBD><EFBFBD>Ĭ<EFBFBD>ϳ<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param none
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*
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* @return none
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*/
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void UART2_DefInit(void)
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{
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UART2_BaudRateCfg(115200);
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R8_UART2_FCR = (2 << 6) | RB_FCR_TX_FIFO_CLR | RB_FCR_RX_FIFO_CLR | RB_FCR_FIFO_EN; // FIFO<46><EFBFBD><F2BFAAA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>4<EFBFBD>ֽ<EFBFBD>
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R8_UART2_LCR = RB_LCR_WORD_SZ;
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R8_UART2_IER = RB_IER_TXD_EN;
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R8_UART2_DIV = 1;
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}
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/*********************************************************************
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* @fn UART2_BaudRateCfg
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*
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* @brief <20><><EFBFBD>ڲ<EFBFBD><DAB2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param baudrate - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @return none
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*/
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void UART2_BaudRateCfg(uint32_t baudrate)
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{
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uint32_t x;
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x = 10 * GetSysClock() / 8 / baudrate;
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x = (x + 5) / 10;
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R16_UART2_DL = (uint16_t)x;
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}
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/*********************************************************************
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* @fn UART2_ByteTrigCfg
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*
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* @brief <20><><EFBFBD><EFBFBD><EFBFBD>ֽڴ<D6BD><DAB4><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param b - <20><><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD> refer to UARTByteTRIGTypeDef
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*
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* @return none
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*/
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void UART2_ByteTrigCfg(UARTByteTRIGTypeDef b)
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{
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R8_UART2_FCR = (R8_UART2_FCR & ~RB_FCR_FIFO_TRIG) | (b << 6);
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}
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/*********************************************************************
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* @fn UART2_INTCfg
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*
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* @brief <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param s - <20>жϿ<D0B6><CFBF><EFBFBD>״̬<D7B4><CCAC><EFBFBD>Ƿ<EFBFBD>ʹ<EFBFBD><CAB9><EFBFBD><EFBFBD>Ӧ<EFBFBD>ж<EFBFBD>
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* @param i - <20>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>
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* RB_IER_MODEM_CHG - <20><><EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<D7B4>仯<EFBFBD>ж<EFBFBD>ʹ<EFBFBD><CAB9>λ<EFBFBD><CEBB><EFBFBD><EFBFBD> UART0 ֧<>֣<EFBFBD>
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* RB_IER_LINE_STAT - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·״̬<D7B4>ж<EFBFBD>
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* RB_IER_THR_EMPTY - <20><><EFBFBD>ͱ<EFBFBD><CDB1>ּĴ<D6BC><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
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* RB_IER_RECV_RDY - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
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*
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* @return none
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*/
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void UART2_INTCfg(FunctionalState s, uint8_t i)
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{
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if(s)
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{
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R8_UART2_IER |= i;
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R8_UART2_MCR |= RB_MCR_INT_OE;
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}
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else
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{
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R8_UART2_IER &= ~i;
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}
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}
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/*********************************************************************
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* @fn UART2_Reset
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*
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* @brief <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ
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*
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* @param none
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*
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* @return none
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*/
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void UART2_Reset(void)
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{
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R8_UART2_IER = RB_IER_RESET;
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}
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/*********************************************************************
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* @fn UART2_SendString
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*
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* @brief <20><><EFBFBD>ڶ<EFBFBD><DAB6>ֽڷ<D6BD><DAB7><EFBFBD>
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*
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* @param buf - <20><><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
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* @param l - <20><><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><CDB5><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
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*
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* @return none
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*/
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void UART2_SendString(uint8_t *buf, uint16_t l)
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{
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uint16_t len = l;
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while(len)
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{
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if(R8_UART2_TFC != UART_FIFO_SIZE)
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{
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R8_UART2_THR = *buf++;
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len--;
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}
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}
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}
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/*********************************************************************
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* @fn UART2_RecvString
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*
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* @brief <20><><EFBFBD>ڶ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ֽ<EFBFBD>
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*
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* @param buf - <20><>ȡ<EFBFBD><C8A1><EFBFBD>ݴ<EFBFBD><DDB4>Ż<EFBFBD><C5BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
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*
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* @return <20><>ȡ<EFBFBD><C8A1><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>
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*/
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uint16_t UART2_RecvString(uint8_t *buf)
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{
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uint16_t len = 0;
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while(R8_UART2_RFC)
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{
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*buf++ = R8_UART2_RBR;
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len++;
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}
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return (len);
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}
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