365 lines
12 KiB
C
365 lines
12 KiB
C
/**************************************************************************//**
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* @file uart.c
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* @version V1.00
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* $Revision: 3 $
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* $Date: 15/05/28 4:34p $
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* @brief Mini58 series UART driver source file
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*
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* @note
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* Copyright (C) 2015 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#include <stdio.h>
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#include "Mini58Series.h"
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/** @addtogroup Mini58_Device_Driver Mini58 Device Driver
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@{
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*/
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/** @addtogroup Mini58_UART_Driver UART Driver
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@{
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*/
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/** @addtogroup Mini58_UART_EXPORTED_FUNCTIONS UART Exported Functions
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@{
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*/
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/**
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* @brief The function is used to clear UART specified interrupt flag.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module.
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*
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* @return None
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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_RLSINT_Msk) { /* clear Receive Line Status Interrupt */
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uart->FIFOSTS = UART_FIFOSTS_BIF_Msk | UART_FIFOSTS_FEF_Msk | UART_FIFOSTS_FEF_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 Interrupt */
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uart->MODEMSTS = UART_MODEMSTS_CTSDETF_Msk;
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if(u32InterruptFlag & UART_INTSTS_BUFERRINT_Msk) { /* clear Buffer Error Interrupt */
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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_RXTOINT_Msk) /* clear Modem Interrupt */
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uart->INTSTS = UART_INTSTS_RXTOIF_Msk;
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}
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/**
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* @brief The function is used to disable UART.
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*
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* @param[in] uart The base address of UART module.
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*
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* @return None
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*/
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void UART_Close(UART_T* uart)
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{
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uart->INTEN = 0;
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}
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/**
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* @brief The function is used to disable UART auto flow control.
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*
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* @param[in] uart The base address of UART module.
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*
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* @return None
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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 The function is used to disable UART specified interrupt and disable NVIC UART IRQ.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module.
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* - \ref UART_INTEN_TOCNTEN_Msk : Rx Time Out interrupt
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* - \ref UART_INTEN_WKCTSIEN_Msk : Wakeup 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 interrupt
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* - \ref UART_INTEN_RLSIEN_Msk : Rx 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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void UART_DisableInt(UART_T* uart, uint32_t u32InterruptFlag )
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{
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uart->INTEN &= ~ u32InterruptFlag;
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}
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/**
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* @brief The function is used to Enable UART auto flow control.
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*
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* @param[in] uart The base address of UART module.
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*
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* @return None
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*/
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void UART_EnableFlowCtrl(UART_T* uart )
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{
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uart->MODEM |= UART_MODEM_RTSACTLV_Msk;
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uart->MODEM &= ~UART_MODEM_RTS_Msk;
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uart->MODEMSTS |= UART_MODEMSTS_CTSACTLV_Msk;
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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 disable NVIC UART IRQ.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32InterruptFlag The specified interrupt of UART module:
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* - \ref UART_INTEN_TOCNTEN_Msk : Rx Time Out interrupt
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* - \ref UART_INTEN_WKCTSIEN_Msk : Wakeup 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 interrupt
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* - \ref UART_INTEN_RLSIEN_Msk : Rx 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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void UART_EnableInt(UART_T* uart, uint32_t u32InterruptFlag )
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{
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uart->INTEN |= u32InterruptFlag;
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}
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/**
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* @brief This function use to enable UART function and set baud-rate.
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*
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* @param[in] uart The base address of 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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void UART_Open(UART_T* uart, uint32_t u32baudrate)
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{
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uint8_t u8UartClkSrcSel;
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uint32_t u32Clk = 0;
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uint32_t u32ClkDiv = 0;
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uint32_t u32Baud_Div;
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u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
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uart->FUNSEL = UART_FUNC_SEL_UART;
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uart->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
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uart->FIFO = UART_FIFO_RFITL_1BYTE | UART_FIFO_RTSTRGLV_1BYTE;
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if(u8UartClkSrcSel == 0)
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u32Clk = __XTAL;
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else if(u8UartClkSrcSel == 1)
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u32Clk = CLK_GetPLLClockFreq();
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else if(u8UartClkSrcSel >= 2)
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u32Clk = __HSI;
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u32ClkDiv = ( (CLK->CLKDIV & CLK_CLKDIV_UARTDIV_Msk) >> CLK_CLKDIV_UARTDIV_Pos );
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u32Clk = u32Clk/(u32ClkDiv + 1);
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if(u32baudrate != 0) {
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u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32Clk, u32baudrate);
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if(u32Baud_Div > 0xFFFF)
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uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32baudrate));
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else
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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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* @brief 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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* @param[in] uart The base address of 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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*/
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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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for(u32Count=0; u32Count < u32ReadBytes; u32Count++) {
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u32delayno = 0;
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while(uart->FIFOSTS & UART_FIFOSTS_RXEMPTY_Msk) { /* Check RX empty => failed */
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u32delayno++;
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if( u32delayno >= 0x40000000 )
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return FALSE;
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}
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pu8RxBuf[u32Count] = uart->DAT; /* Get Data from UART RX */
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}
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return u32Count;
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}
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/**
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* @brief This function use to config UART line setting.
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*
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* @param[in] uart The base address of 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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* @param[in] u32parity The parity setting (odd/even/none) of UART module.
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* @param[in] u32stop_bits The stop bit length (1/1.5 bit) of UART module.
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*
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* @return None
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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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uint8_t u8UartClkSrcSel;
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uint32_t u32Clk = 0;
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uint32_t u32ClkDiv = 0;
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uint32_t u32Baud_Div = 0;
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u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
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if(u8UartClkSrcSel == 0)
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u32Clk = __XTAL;
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else if(u8UartClkSrcSel == 1)
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u32Clk = CLK_GetPLLClockFreq();
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else if(u8UartClkSrcSel >= 2)
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u32Clk = __HSI;
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u32ClkDiv = ( (CLK->CLKDIV & CLK_CLKDIV_UARTDIV_Msk) >> CLK_CLKDIV_UARTDIV_Pos );
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u32Clk = u32Clk/(u32ClkDiv + 1);
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if(u32baudrate != 0) {
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u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32Clk, u32baudrate);
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if(u32Baud_Div > 0xFFFF)
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uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32baudrate));
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else
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uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
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}
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uart->LINE = u32data_width | u32parity | u32stop_bits;
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}
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/**
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* @brief This function use to set Rx timeout count.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32TOC Rx timeout counter.
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*
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* @return None
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*/
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void UART_SetTimeoutCnt(UART_T* uart, uint32_t u32TOC)
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{
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uart->TOUT = (uart->TOUT & ~UART_TOUT_TOIC_Msk)| (u32TOC);
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uart->INTEN |= UART_INTEN_TOCNTEN_Msk;
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}
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/**
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* @brief The function is used to configure IrDA relative settings. It consists of TX or RX mode and baudrate.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32Buadrate The baudrate of UART module.
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* @param[in] u32Direction The direction(transmit:1/receive:0) of UART module in IrDA mode.
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*
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* @return None
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*/
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void UART_SelectIrDAMode(UART_T* uart, uint32_t u32Buadrate, uint32_t u32Direction)
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{
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uint8_t u8UartClkSrcSel;
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uint32_t u32Clk = 0;
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uint32_t u32ClkDiv = 0;
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u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
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if(u8UartClkSrcSel == 0)
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u32Clk = __XTAL;
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else if(u8UartClkSrcSel == 1)
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u32Clk = CLK_GetPLLClockFreq();
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else if(u8UartClkSrcSel >= 2)
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u32Clk = __HSI;
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u32ClkDiv = ( (CLK->CLKDIV & CLK_CLKDIV_UARTDIV_Msk) >> CLK_CLKDIV_UARTDIV_Pos );
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u32Clk = u32Clk/(u32ClkDiv + 1);
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uart->BAUD = UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32Buadrate);
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uart->IRDA &= ~UART_IRDA_TXINV_Msk;
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uart->IRDA |= UART_IRDA_RXINV_Msk;
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uart->IRDA = u32Direction ? uart->IRDA | UART_IRDA_TXEN_Msk : uart->IRDA &~ UART_IRDA_TXEN_Msk;
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uart->FUNSEL = (0x2 << UART_FUNSEL_FUN_SEL_Pos);
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}
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/**
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* @brief The function is used to set RS485 relative setting.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] u32Mode The operation mode(NMM/AUD/AAD).
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* @param[in] u32Addr The RS485 address.
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*
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* @return None
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*/
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void UART_SelectRS485Mode(UART_T* uart, uint32_t u32Mode, uint32_t u32Addr)
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{
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uart->FUNSEL = UART_FUNC_SEL_RS485;
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uart->ALTCTL = 0;
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uart->ALTCTL |= u32Mode | (u32Addr << UART_ALTCTL_ADDRMV_Pos);
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}
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/**
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* @brief The function is to write data into TX buffer to transmit data by UART.
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*
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* @param[in] uart The base address of UART module.
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* @param[in] pu8TxBuf The buffer to send the data to UART transmission FIFO.
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* @param[in] u32WriteBytes The byte number of data.
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*
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* @return u32Count: transfer byte count
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*/
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uint32_t UART_Write(UART_T* uart,uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
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{
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uint32_t u32Count, u32delayno;
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for(u32Count=0; u32Count != u32WriteBytes; u32Count++) {
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u32delayno = 0;
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while((uart->FIFOSTS & UART_FIFOSTS_TXEMPTYF_Msk) == 0) { /* Wait Tx empty and Time-out manner */
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u32delayno++;
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if( u32delayno >= 0x40000000 )
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return FALSE;
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}
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uart->DAT = pu8TxBuf[u32Count]; /* Send UART Data from buffer */
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}
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return u32Count;
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}
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/*@}*/ /* end of group Mini58_UART_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group Mini58_UART_Driver */
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/*@}*/ /* end of group Mini58_Device_Driver */
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/*** (C) COPYRIGHT 2012 Nuvoton Technology Corp. ***/
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