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723 lines
25 KiB
C
723 lines
25 KiB
C
/****************************************************************************
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* @file uart.c
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* @version V1.00
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* @brief M031 series UART driver source file
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*
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* SPDX-License-Identifier: Apache-2.0
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* @copyright (C) 2018 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include <stdio.h>
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#include "NuMicro.h"
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/** @addtogroup Standard_Driver Standard Driver
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@{
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*/
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/** @addtogroup UART_Driver UART Driver
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@{
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*/
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/** @addtogroup UART_EXPORTED_FUNCTIONS UART Exported Functions
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@{
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*/
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/**
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* @brief Clear UART specified interrupt flag
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module.
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* - \ref UART_INTSTS_SWBEINT_Msk : Single-wire Bit Error Detect Interrupt
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* - \ref UART_INTEN_WKIEN_Msk : Wake-up interrupt
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* - \ref UART_INTSTS_BUFERRINT_Msk : Buffer Error interrupt
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* - \ref UART_INTSTS_MODEMINT_Msk : Modem Status interrupt
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* - \ref UART_INTSTS_RLSINT_Msk : Receive Line Status interrupt
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*
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* @return None
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*
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* @details The function is used to clear UART specified interrupt flag.
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*/
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void UART_ClearIntFlag(UART_T *uart, uint32_t u32InterruptFlag)
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{
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if (u32InterruptFlag & UART_INTSTS_SWBEINT_Msk) /* Clear Bit Error Detection Interrupt */
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{
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uart->INTSTS = UART_INTSTS_SWBEIF_Msk;
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}
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if (u32InterruptFlag & UART_INTSTS_RLSINT_Msk) /* Clear Receive Line Status Interrupt */
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{
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uart->FIFOSTS = UART_FIFOSTS_BIF_Msk | UART_FIFOSTS_FEF_Msk | UART_FIFOSTS_PEF_Msk;
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uart->FIFOSTS = UART_FIFOSTS_ADDRDETF_Msk;
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}
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if (u32InterruptFlag & UART_INTSTS_MODEMINT_Msk) /* Clear Modem Status Interrupt */
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{
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uart->MODEMSTS |= UART_MODEMSTS_CTSDETF_Msk;
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}
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if (u32InterruptFlag & UART_INTSTS_BUFERRINT_Msk) /* Clear Buffer Error Interrupt */
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{
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uart->FIFOSTS = UART_FIFOSTS_RXOVIF_Msk | UART_FIFOSTS_TXOVIF_Msk;
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}
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if (u32InterruptFlag & UART_INTSTS_WKINT_Msk) /* Clear Wake-up Interrupt */
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{
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uart->WKSTS = UART_WKSTS_CTSWKF_Msk | UART_WKSTS_DATWKF_Msk |
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UART_WKSTS_RFRTWKF_Msk | UART_WKSTS_RS485WKF_Msk |
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UART_WKSTS_TOUTWKF_Msk;
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}
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}
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/**
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* @brief Disable UART interrupt
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*
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* @param[in] uart The pointer of the specified UART module.
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*
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* @return None
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*
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* @details The function is used to disable UART interrupt.
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*/
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void UART_Close(UART_T *uart)
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{
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uart->INTEN = 0ul;
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}
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/**
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* @brief Disable UART auto flow control function
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*
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* @param[in] uart The pointer of the specified UART module.
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*
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* @return None
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*
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* @details The function is used to disable UART auto flow control.
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*/
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void UART_DisableFlowCtrl(UART_T *uart)
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{
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uart->INTEN &= ~(UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk);
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}
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/**
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* @brief Disable UART specified interrupt
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module.
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* - \ref UART_INTSTS_SWBEINT_Msk : Single-wire Bit Error Detect Interrupt
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* - \ref UART_INTEN_WKIEN_Msk : Wake-up interrupt
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* - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt
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* - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt
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* - \ref UART_INTEN_MODEMIEN_Msk : Modem status interrupt
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* - \ref UART_INTEN_RLSIEN_Msk : Receive Line status interrupt
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* - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt
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* - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt *
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*
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* @return None
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*
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* @details The function is used to disable UART specified interrupt and disable NVIC UART IRQ.
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*/
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void UART_DisableInt(UART_T *uart, uint32_t u32InterruptFlag)
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{
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/* Disable UART specified interrupt */
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UART_DISABLE_INT(uart, u32InterruptFlag);
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}
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/**
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* @brief Enable UART auto flow control function
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*
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* @param[in] uart The pointer of the specified UART module.
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*
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* @return None
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*
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* @details The function is used to Enable UART auto flow control.
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*/
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void UART_EnableFlowCtrl(UART_T *uart)
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{
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/* Set RTS pin output is low level active */
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uart->MODEM |= UART_MODEM_RTSACTLV_Msk;
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/* Set CTS pin input is low level active */
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uart->MODEMSTS |= UART_MODEMSTS_CTSACTLV_Msk;
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/* Set RTS and CTS auto flow control enable */
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uart->INTEN |= UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk;
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}
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/**
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* @brief The function is used to enable UART specified interrupt and enable NVIC UART IRQ.
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module:
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* - \ref UART_INTSTS_SWBEINT_Msk : Single-wire Bit Error Detect Interrupt
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* - \ref UART_INTEN_WKIEN_Msk : Wake-up interrupt
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* - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt
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* - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt
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* - \ref UART_INTEN_MODEMIEN_Msk : Modem status interrupt
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* - \ref UART_INTEN_RLSIEN_Msk : Receive Line status interrupt
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* - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt
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* - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt *
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*
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* @return None
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*
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* @details The function is used to enable UART specified interrupt and enable NVIC UART IRQ.
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*/
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void UART_EnableInt(UART_T *uart, uint32_t u32InterruptFlag)
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{
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/* Enable UART specified interrupt */
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UART_ENABLE_INT(uart, u32InterruptFlag);
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}
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/**
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* @brief Open and set UART function
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] u32baudrate The baudrate of UART module.
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*
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* @return None
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*
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* @details This function use to enable UART function and set baud-rate.
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*/
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void UART_Open(UART_T *uart, uint32_t u32baudrate)
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{
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uint32_t u32UartClkSrcSel = 0ul, u32UartClkDivNum = 0ul;
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uint32_t u32ClkTbl[6ul] = {__HXT, 0ul, __LXT, __HIRC, 0ul, __LIRC};
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uint32_t u32Baud_Div = 0ul;
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if (uart == (UART_T *)UART0)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = ((uint32_t)(CLK->CLKSEL1 & CLK_CLKSEL1_UART0SEL_Msk)) >> CLK_CLKSEL1_UART0SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART0DIV_Msk) >> CLK_CLKDIV0_UART0DIV_Pos;
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}
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else if (uart == (UART_T *)UART1)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART1SEL_Msk) >> CLK_CLKSEL1_UART1SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART1DIV_Msk) >> CLK_CLKDIV0_UART1DIV_Pos;
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}
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else if (uart == (UART_T *)UART2)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART2SEL_Msk) >> CLK_CLKSEL3_UART2SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART2DIV_Msk) >> CLK_CLKDIV4_UART2DIV_Pos;
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}
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else if (uart == (UART_T *)UART3)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART3SEL_Msk) >> CLK_CLKSEL3_UART3SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART3DIV_Msk) >> CLK_CLKDIV4_UART3DIV_Pos;
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}
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else if (uart == (UART_T *)UART4)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART4SEL_Msk) >> CLK_CLKSEL3_UART4SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART4DIV_Msk) >> CLK_CLKDIV4_UART4DIV_Pos;
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}
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else if (uart == (UART_T *)UART5)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART5SEL_Msk) >> CLK_CLKSEL3_UART5SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART5DIV_Msk) >> CLK_CLKDIV4_UART5DIV_Pos;
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}
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else if (uart == (UART_T *)UART6)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART6SEL_Msk) >> CLK_CLKSEL3_UART6SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART6DIV_Msk) >> CLK_CLKDIV4_UART6DIV_Pos;
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}
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else if (uart == (UART_T *)UART7)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART7SEL_Msk) >> CLK_CLKSEL3_UART7SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART7DIV_Msk) >> CLK_CLKDIV4_UART7DIV_Pos;
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}
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/* Select UART function */
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uart->FUNCSEL = UART_FUNCSEL_UART;
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/* Set UART line configuration */
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uart->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
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/* Set UART Rx and RTS trigger level */
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uart->FIFO &= ~(UART_FIFO_RFITL_Msk | UART_FIFO_RTSTRGLV_Msk);
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/* Get PLL clock frequency if UART clock source selection is PLL */
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if (u32UartClkSrcSel == 1ul)
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{
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u32ClkTbl[u32UartClkSrcSel] = CLK_GetPLLClockFreq();
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}
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/* Get PCLK clock frequency if UART clock source selection is PCLK */
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if (u32UartClkSrcSel == 4ul)
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{
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/* UART Port as UART0 ,UART2, UART4 or UART6 */
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if ((uart == (UART_T *)UART0) || (uart == (UART_T *)UART2) || (uart == (UART_T *)UART4) || (uart == (UART_T *)UART6))
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{
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u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK0Freq();
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}
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else /* UART Port as UART1, UART3, UART5 or UART7*/
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{
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u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK1Freq();
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}
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}
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/* Set UART baud rate */
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if (u32baudrate != 0ul)
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{
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u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u32UartClkSrcSel]) / (u32UartClkDivNum + 1ul), u32baudrate);
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if (u32Baud_Div > 0xFFFFul)
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{
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uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u32UartClkSrcSel]) / (u32UartClkDivNum + 1ul), u32baudrate));
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}
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else
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{
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uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
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}
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}
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}
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/**
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* @brief Read UART data
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] pu8RxBuf The buffer to receive the data of receive FIFO.
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* @param[in] u32ReadBytes The the read bytes number of data.
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*
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* @return u32Count Receive byte count
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*
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* @details The function is used to read Rx data from RX FIFO and the data will be stored in pu8RxBuf.
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*/
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uint32_t UART_Read(UART_T *uart, uint8_t pu8RxBuf[], uint32_t u32ReadBytes)
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{
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uint32_t u32Count, u32delayno;
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uint32_t u32Exit = 0ul;
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for (u32Count = 0ul; u32Count < u32ReadBytes; u32Count++)
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{
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u32delayno = 0ul;
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while (uart->FIFOSTS & UART_FIFOSTS_RXEMPTY_Msk) /* Check RX empty => failed */
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{
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u32delayno++;
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if (u32delayno >= 0x40000000ul)
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{
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u32Exit = 1ul;
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break;
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}
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}
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if (u32Exit == 1ul)
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{
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break;
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}
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else
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{
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pu8RxBuf[u32Count] = (uint8_t)uart->DAT; /* Get Data from UART RX */
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}
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}
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return u32Count;
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}
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/**
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* @brief Set UART line configuration
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*
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* @param[in] uart The pointer of the specified UART module.
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* @param[in] u32baudrate The register value of baudrate of UART module.
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* If u32baudrate = 0, UART baudrate will not change.
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* @param[in] u32data_width The data length of UART module.
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* - \ref UART_WORD_LEN_5
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* - \ref UART_WORD_LEN_6
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* - \ref UART_WORD_LEN_7
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* - \ref UART_WORD_LEN_8
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* @param[in] u32parity The parity setting (none/odd/even/mark/space) of UART module.
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* - \ref UART_PARITY_NONE
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* - \ref UART_PARITY_ODD
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* - \ref UART_PARITY_EVEN
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* - \ref UART_PARITY_MARK
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* - \ref UART_PARITY_SPACE
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* @param[in] u32stop_bits The stop bit length (1/1.5/2 bit) of UART module.
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* - \ref UART_STOP_BIT_1
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* - \ref UART_STOP_BIT_1_5
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* - \ref UART_STOP_BIT_2
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*
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* @return None
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*
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* @details This function use to config UART line setting.
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*/
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void UART_SetLine_Config(UART_T *uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
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{
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uint32_t u32UartClkSrcSel = 0ul, u32UartClkDivNum = 0ul;
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uint32_t u32ClkTbl[6ul] = {__HXT, 0ul, __LXT, __HIRC, 0, __LIRC};
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uint32_t u32Baud_Div = 0ul;
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if (uart == (UART_T *)UART0)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART0SEL_Msk) >> CLK_CLKSEL1_UART0SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART0DIV_Msk) >> CLK_CLKDIV0_UART0DIV_Pos;
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}
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else if (uart == (UART_T *)UART1)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART1SEL_Msk) >> CLK_CLKSEL1_UART1SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART1DIV_Msk) >> CLK_CLKDIV0_UART1DIV_Pos;
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}
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else if (uart == (UART_T *)UART2)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART2SEL_Msk) >> CLK_CLKSEL3_UART2SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART2DIV_Msk) >> CLK_CLKDIV4_UART2DIV_Pos;
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}
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else if (uart == (UART_T *)UART3)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART3SEL_Msk) >> CLK_CLKSEL3_UART3SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART3DIV_Msk) >> CLK_CLKDIV4_UART3DIV_Pos;
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}
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else if (uart == (UART_T *)UART4)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART4SEL_Msk) >> CLK_CLKSEL3_UART4SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART4DIV_Msk) >> CLK_CLKDIV4_UART4DIV_Pos;
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}
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else if (uart == (UART_T *)UART5)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART5SEL_Msk) >> CLK_CLKSEL3_UART5SEL_Pos;
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/* Get UART clock divider number */
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u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART5DIV_Msk) >> CLK_CLKDIV4_UART5DIV_Pos;
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}
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else if (uart == (UART_T *)UART6)
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{
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/* Get UART clock source selection */
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u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART6SEL_Msk) >> CLK_CLKSEL3_UART6SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART6DIV_Msk) >> CLK_CLKDIV4_UART6DIV_Pos;
|
|
}
|
|
else if (uart == (UART_T *)UART7)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART7SEL_Msk) >> CLK_CLKSEL3_UART7SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART7DIV_Msk) >> CLK_CLKDIV4_UART7DIV_Pos;
|
|
}
|
|
|
|
/* Get PLL clock frequency if UART clock source selection is PLL */
|
|
if (u32UartClkSrcSel == 1ul)
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPLLClockFreq();
|
|
}
|
|
|
|
/* Get PCLK clock frequency if UART clock source selection is PCLK */
|
|
if (u32UartClkSrcSel == 4ul)
|
|
{
|
|
if ((uart == (UART_T *)UART0) || (uart == (UART_T *)UART2) || (uart == (UART_T *)UART4) || (uart == (UART_T *)UART6))
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK0Freq();
|
|
}
|
|
else /* UART Port as UART1, UART3, UART5, UART7*/
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK1Freq();
|
|
}
|
|
}
|
|
|
|
|
|
/* Set UART baud rate */
|
|
if (u32baudrate != 0ul)
|
|
{
|
|
u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u32UartClkSrcSel]) / (u32UartClkDivNum + 1ul), u32baudrate);
|
|
|
|
if (u32Baud_Div > 0xFFFFul)
|
|
{
|
|
uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u32UartClkSrcSel]) / (u32UartClkDivNum + 1ul), u32baudrate));
|
|
}
|
|
else
|
|
{
|
|
uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
|
|
}
|
|
}
|
|
|
|
/* Set UART line configuration */
|
|
uart->LINE = u32data_width | u32parity | u32stop_bits;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Set Rx timeout count
|
|
*
|
|
* @param[in] uart The pointer of the specified UART module.
|
|
* @param[in] u32TOC Rx timeout counter.
|
|
*
|
|
* @return None
|
|
*
|
|
* @details This function use to set Rx timeout count.
|
|
*/
|
|
void UART_SetTimeoutCnt(UART_T *uart, uint32_t u32TOC)
|
|
{
|
|
/* Set time-out interrupt comparator */
|
|
uart->TOUT = (uart->TOUT & ~UART_TOUT_TOIC_Msk) | (u32TOC);
|
|
|
|
/* Set time-out counter enable */
|
|
uart->INTEN |= UART_INTEN_TOCNTEN_Msk;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Select and configure IrDA function
|
|
*
|
|
* @param[in] uart The pointer of the specified UART module.
|
|
* @param[in] u32Buadrate The baudrate of UART module.
|
|
* @param[in] u32Direction The direction of UART module in IrDA mode:
|
|
* - \ref UART_IRDA_TXEN
|
|
* - \ref UART_IRDA_RXEN
|
|
*
|
|
* @return None
|
|
*
|
|
* @details The function is used to configure IrDA relative settings. It consists of TX or RX mode and baudrate.
|
|
*/
|
|
void UART_SelectIrDAMode(UART_T *uart, uint32_t u32Buadrate, uint32_t u32Direction)
|
|
{
|
|
uint32_t u32UartClkSrcSel = 0ul, u32UartClkDivNum = 0ul;
|
|
uint32_t u32ClkTbl[6ul] = {__HXT, 0ul, __LXT, __HIRC, 0ul, __LIRC};
|
|
uint32_t u32Baud_Div;
|
|
|
|
/* Select IrDA function mode */
|
|
uart->FUNCSEL = UART_FUNCSEL_IrDA;
|
|
|
|
|
|
if (uart == UART0)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART0SEL_Msk) >> CLK_CLKSEL1_UART0SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART0DIV_Msk) >> CLK_CLKDIV0_UART0DIV_Pos;
|
|
}
|
|
else if (uart == UART1)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UART1SEL_Msk) >> CLK_CLKSEL1_UART1SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UART1DIV_Msk) >> CLK_CLKDIV0_UART1DIV_Pos;
|
|
}
|
|
else if (uart == UART2)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART2SEL_Msk) >> CLK_CLKSEL3_UART2SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART2DIV_Msk) >> CLK_CLKDIV4_UART2DIV_Pos;
|
|
}
|
|
else if (uart == UART3)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART3SEL_Msk) >> CLK_CLKSEL3_UART3SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART3DIV_Msk) >> CLK_CLKDIV4_UART3DIV_Pos;
|
|
}
|
|
else if (uart == UART4)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART4SEL_Msk) >> CLK_CLKSEL3_UART4SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART4DIV_Msk) >> CLK_CLKDIV4_UART4DIV_Pos;
|
|
}
|
|
else if (uart == UART5)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART5SEL_Msk) >> CLK_CLKSEL3_UART5SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART5DIV_Msk) >> CLK_CLKDIV4_UART5DIV_Pos;
|
|
}
|
|
else if (uart == UART6)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART6SEL_Msk) >> CLK_CLKSEL3_UART6SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART6DIV_Msk) >> CLK_CLKDIV4_UART6DIV_Pos;
|
|
}
|
|
else if (uart == UART7)
|
|
{
|
|
/* Get UART clock source selection */
|
|
u32UartClkSrcSel = (CLK->CLKSEL3 & CLK_CLKSEL3_UART7SEL_Msk) >> CLK_CLKSEL3_UART7SEL_Pos;
|
|
/* Get UART clock divider number */
|
|
u32UartClkDivNum = (CLK->CLKDIV4 & CLK_CLKDIV4_UART7DIV_Msk) >> CLK_CLKDIV4_UART7DIV_Pos;
|
|
}
|
|
|
|
/* Get PLL clock frequency if UART clock source selection is PLL */
|
|
if (u32UartClkSrcSel == 1ul)
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPLLClockFreq();
|
|
}
|
|
|
|
/* Get PCLK clock frequency if UART clock source selection is PCLK */
|
|
if (u32UartClkSrcSel == 4ul)
|
|
{
|
|
if ((uart == (UART_T *)UART0) || (uart == (UART_T *)UART2) || (uart == (UART_T *)UART4) || (uart == (UART_T *)UART6))
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK0Freq();
|
|
}
|
|
else /* UART Port as UART1, UART3, UART5, UART7*/
|
|
{
|
|
u32ClkTbl[u32UartClkSrcSel] = CLK_GetPCLK1Freq();
|
|
}
|
|
}
|
|
|
|
|
|
/* Set UART IrDA baud rate in mode 0 */
|
|
if (u32Buadrate != 0ul)
|
|
{
|
|
u32Baud_Div = UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u32UartClkSrcSel]) / (u32UartClkDivNum + 1ul), u32Buadrate);
|
|
|
|
if (u32Baud_Div < 0xFFFFul)
|
|
{
|
|
uart->BAUD = (UART_BAUD_MODE0 | u32Baud_Div);
|
|
}
|
|
else
|
|
{
|
|
}
|
|
}
|
|
|
|
/* Configure IrDA relative settings */
|
|
if (u32Direction == UART_IRDA_RXEN)
|
|
{
|
|
uart->IRDA |= UART_IRDA_RXINV_Msk; /*Rx signal is inverse*/
|
|
uart->IRDA &= ~UART_IRDA_TXEN_Msk;
|
|
}
|
|
else
|
|
{
|
|
uart->IRDA &= ~UART_IRDA_TXINV_Msk; /*Tx signal is not inverse*/
|
|
uart->IRDA |= UART_IRDA_TXEN_Msk;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Select and configure RS485 function
|
|
*
|
|
* @param[in] uart The pointer of the specified UART module.
|
|
* @param[in] u32Mode The operation mode(NMM/AUD/AAD).
|
|
* - \ref UART_ALTCTL_RS485NMM_Msk
|
|
* - \ref UART_ALTCTL_RS485AUD_Msk
|
|
* - \ref UART_ALTCTL_RS485AAD_Msk
|
|
* @param[in] u32Addr The RS485 address.
|
|
*
|
|
* @return None
|
|
*
|
|
* @details The function is used to set RS485 relative setting.
|
|
*/
|
|
void UART_SelectRS485Mode(UART_T *uart, uint32_t u32Mode, uint32_t u32Addr)
|
|
{
|
|
/* Select UART RS485 function mode */
|
|
uart->FUNCSEL = UART_FUNCSEL_RS485;
|
|
|
|
/* Set RS485 configuration */
|
|
uart->ALTCTL &= ~(UART_ALTCTL_RS485NMM_Msk | UART_ALTCTL_RS485AUD_Msk | UART_ALTCTL_RS485AAD_Msk | UART_ALTCTL_ADDRMV_Msk);
|
|
uart->ALTCTL |= (u32Mode | (u32Addr << UART_ALTCTL_ADDRMV_Pos));
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Write UART data
|
|
*
|
|
* @param[in] uart The pointer of the specified UART module.
|
|
* @param[in] pu8TxBuf The buffer to send the data to UART transmission FIFO.
|
|
* @param[out] u32WriteBytes The byte number of data.
|
|
*
|
|
* @return u32Count transfer byte count
|
|
*
|
|
* @details The function is to write data into TX buffer to transmit data by UART.
|
|
*/
|
|
uint32_t UART_Write(UART_T *uart, uint8_t pu8TxBuf[], uint32_t u32WriteBytes)
|
|
{
|
|
uint32_t u32Count, u32delayno;
|
|
uint32_t u32Exit = 0ul;
|
|
|
|
for (u32Count = 0ul; u32Count != u32WriteBytes; u32Count++)
|
|
{
|
|
u32delayno = 0ul;
|
|
|
|
while (uart->FIFOSTS & UART_FIFOSTS_TXFULL_Msk) /* Check Tx Full */
|
|
{
|
|
u32delayno++;
|
|
|
|
if (u32delayno >= 0x40000000ul)
|
|
{
|
|
u32Exit = 1ul;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (u32Exit == 1ul)
|
|
{
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
uart->DAT = pu8TxBuf[u32Count]; /* Send UART Data from buffer */
|
|
}
|
|
}
|
|
|
|
return u32Count;
|
|
|
|
}
|
|
/**
|
|
* @brief Select Single Wire mode function
|
|
*
|
|
* @param[in] uart The pointer of the specified UART module.
|
|
*
|
|
* @return None
|
|
*
|
|
* @details The function is used to select Single Wire mode.
|
|
*/
|
|
void UART_SelectSingleWireMode(UART_T *uart)
|
|
{
|
|
|
|
/* Select UART SingleWire function mode */
|
|
uart->FUNCSEL = ((uart->FUNCSEL & (~UART_FUNCSEL_FUNCSEL_Msk)) | UART_FUNCSEL_SINGLE_WIRE);
|
|
|
|
}
|
|
|
|
|
|
/*@}*/ /* end of group UART_EXPORTED_FUNCTIONS */
|
|
|
|
/*@}*/ /* end of group UART_Driver */
|
|
|
|
/*@}*/ /* end of group Standard_Driver */
|
|
|
|
/*** (C) COPYRIGHT 2018 Nuvoton Technology Corp. ***/
|
|
|
|
|
|
|