Mouse code for the MacroRat
Diff: mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_uart.c
- Revision:
- 18:6a4db94011d3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_uart.c Sun May 14 23:18:57 2017 +0000 @@ -0,0 +1,343 @@ +/**************************************************************************//** + * @file uart.c + * @version V1.00 + * $Revision: 14 $ + * $Date: 15/11/26 10:47a $ + * @brief NUC472/NUC442 UART driver source file + * + * @note + * Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved. +*****************************************************************************/ + +#include <stdio.h> +#include "NUC472_442.h" + +/*---------------------------------------------------------------------------------------------------------*/ +/* Includes of local headers */ +/*---------------------------------------------------------------------------------------------------------*/ + + +/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver + @{ +*/ + +/** @addtogroup NUC472_442_UART_Driver UART Driver + @{ +*/ + + +/** @addtogroup NUC472_442_UART_EXPORTED_FUNCTIONS UART Exported Functions + @{ +*/ + + +/** + * @brief The function is used to clear UART specified interrupt flag. + * + * @param[in] uart The base address of UART module. + * @param[in] u32InterruptFlag The specified interrupt of UART module.. + * + * @return None + */ +void UART_ClearIntFlag(UART_T* uart , uint32_t u32InterruptFlag) +{ + if(u32InterruptFlag & UART_INTSTS_RLSINT_Msk) { /* clear Receive Line Status Interrupt */ + uart->FIFOSTS |= UART_FIFOSTS_BIF_Msk | UART_FIFOSTS_FEF_Msk | UART_FIFOSTS_PEF_Msk; + uart->FIFOSTS |= UART_FIFOSTS_ADDRDETF_Msk; + } + + if(u32InterruptFlag & UART_INTSTS_MODEMINT_Msk) /* clear Modem Interrupt */ + uart->MODEMSTS |= UART_MODEMSTS_CTSDETF_Msk; + + if(u32InterruptFlag & UART_INTSTS_BUFERRINT_Msk) { /* clear Buffer Error Interrupt */ + uart->FIFOSTS |= UART_FIFOSTS_RXOVIF_Msk | UART_FIFOSTS_TXOVIF_Msk; + } + + if(u32InterruptFlag & UART_INTSTS_RXTOINT_Msk) /* clear Modem Interrupt */ + uart->INTSTS |= UART_INTSTS_RXTOIF_Msk; + +} + + +/** + * @brief The function is used to disable UART. + * + * @param[in] uart The base address of UART module. + * + * @return None + */ +void UART_Close(UART_T* uart) +{ + uart->INTEN = 0; +} + + +/** + * @brief The function is used to disable UART auto flow control. + * + * @param[in] uart The base address of UART module. + * + * @return None + */ +void UART_DisableFlowCtrl(UART_T* uart) +{ + uart->INTEN &= ~(UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk); +} + + +/** + * @brief The function is used to disable UART specified interrupt and disable NVIC UART IRQ. + * + * @param[in] uart The base address of UART module. + * @param[in] u32InterruptFlag The specified interrupt of UART module. + * - \ref UART_INTEN_TOCNTEN_Msk : Rx Time Out interrupt + * - \ref UART_INTEN_WKCTSIEN_Msk : Wakeup interrupt + * - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt + * - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt + * - \ref UART_INTEN_MODEMIEN_Msk : Modem interrupt + * - \ref UART_INTEN_RLSIEN_Msk : Rx Line status interrupt + * - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt + * - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt + * + * @return None + */ +void UART_DisableInt(UART_T* uart, uint32_t u32InterruptFlag ) +{ + uart->INTEN &= ~ u32InterruptFlag; +} + + + +/** + * @brief The function is used to Enable UART auto flow control. + * + * @param[in] uart The base address of UART module. + * + * @return None + */ +void UART_EnableFlowCtrl(UART_T* uart ) +{ + uart->MODEM |= UART_MODEM_RTSACTLV_Msk; + uart->MODEM &= ~UART_MODEM_RTS_Msk; + uart->MODEMSTS |= UART_MODEMSTS_CTSACTLV_Msk; + uart->INTEN |= UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk; +} + + +/** + * @brief The function is used to enable UART specified interrupt and disable NVIC UART IRQ. + * + * @param[in] uart The base address of UART module. + * @param[in] u32InterruptFlag The specified interrupt of UART module: + * - \ref UART_INTEN_TOCNTEN_Msk : Rx Time Out interrupt + * - \ref UART_INTEN_WKCTSIEN_Msk : Wakeup interrupt + * - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt + * - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt + * - \ref UART_INTEN_MODEMIEN_Msk : Modem interrupt + * - \ref UART_INTEN_RLSIEN_Msk : Rx Line status interrupt + * - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt + * - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt + * + * @return None + */ +void UART_EnableInt(UART_T* uart, uint32_t u32InterruptFlag ) +{ + uart->INTEN |= u32InterruptFlag; +} + + +/** + * @brief This function use to enable UART function and set baud-rate. + * + * @param[in] uart The base address of UART module. + * @param[in] u32baudrate The baudrate of UART module. + * + * @return None + */ +void UART_Open(UART_T* uart, uint32_t u32baudrate) +{ + uint8_t u8UartClkSrcSel; + uint32_t u32ClkTbl[4] = {__HXT, 0, __HIRC, __HIRC}; + uint32_t u32Clk; + uint32_t u32Baud_Div; + + u32ClkTbl[1] = CLK_GetPLLClockFreq(); + + u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos; + + uart->FUNCSEL = UART_FUNCSEL_UART; + uart->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1; + uart->FIFO = UART_FIFO_RFITL_1BYTE | UART_FIFO_RTSTRGLV_1BYTE; + + u32Clk = (u32ClkTbl[u8UartClkSrcSel]) / (((CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos) + 1); + + if(u32baudrate != 0) { + u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32Clk, u32baudrate); + + if(u32Baud_Div > 0xFFFF) + uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32baudrate)); + else + uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div); + } +} + + +/** + * @brief The function is used to read Rx data from RX FIFO and the data will be stored in pu8RxBuf. + * + * @param[in] uart The base address of UART module. + * @param[out] pu8RxBuf The buffer to receive the data of receive FIFO. + * @param[in] u32ReadBytes The the read bytes number of data. + * + * @return u32Count: Receive byte count + * + */ +uint32_t UART_Read(UART_T* uart, uint8_t *pu8RxBuf, uint32_t u32ReadBytes) +{ + uint32_t u32Count; + + for(u32Count=0; u32Count < u32ReadBytes; u32Count++) { + if(uart->FIFOSTS & UART_FIFOSTS_RXEMPTY_Msk) { /* Check RX empty => failed */ + return u32Count; + } + pu8RxBuf[u32Count] = uart->DAT; /* Get Data from UART RX */ + } + + return u32Count; +} + + +/** + * @brief This function use to config UART line setting. + * + * @param[in] uart The base address of UART module. + * @param[in] u32baudrate The register value of baudrate of UART module. + * if u32baudrate = 0, UART baudrate will not change. + * @param[in] u32data_width The data length of UART module. [ \ref UART_WORD_LEN_5 / \ref UART_WORD_LEN_6 / \ref UART_WORD_LEN_7 / \ref UART_WORD_LEN_8] + * @param[in] u32parity The parity setting (odd/even/none) of UART module. [ \ref UART_PARITY_NONE / \ref UART_PARITY_ODD / + * \ref UART_PARITY_EVEN / \ref UART_PARITY_MARK / \ref UART_PARITY_SPACE] + * @param[in] u32stop_bits The stop bit length (1/1.5/2 bit) of UART module. [ \ref UART_STOP_BIT_1 / \ref UART_STOP_BIT_1_5 / \ref UART_STOP_BIT_2] + * + * @return None + */ +void UART_SetLine_Config(UART_T* uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits) +{ + uint8_t u8UartClkSrcSel; + uint32_t u32ClkTbl[4] = {__HXT, 0, __HIRC, __HIRC}; + uint32_t u32Clk; + uint32_t u32Baud_Div = 0; + + u32ClkTbl[1] = CLK_GetPLLClockFreq(); + + u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos; + + u32Clk = (u32ClkTbl[u8UartClkSrcSel]) / (((CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos) + 1); + + if(u32baudrate != 0) { + u32Baud_Div = UART_BAUD_MODE2_DIVIDER(u32Clk, u32baudrate); + + if(u32Baud_Div > 0xFFFF) + uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32baudrate)); + else + uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div); + } + + uart->LINE = u32data_width | u32parity | u32stop_bits; +} + + +/** + * @brief This function use to set Rx timeout count. + * + * @param[in] uart The base address of UART module. + * @param[in] u32TOC Rx timeout counter. + * + * @return None + */ +void UART_SetTimeoutCnt(UART_T* uart, uint32_t u32TOC) +{ + uart->TOUT = (uart->TOUT & ~UART_TOUT_TOIC_Msk)| (u32TOC); + uart->INTEN |= UART_INTEN_TOCNTEN_Msk; +} + + +/** + * @brief The function is used to configure IrDA relative settings. It consists of TX or RX mode and baudrate. + * + * @param[in] uart The base address of UART module. + * @param[in] u32Buadrate The baudrate of UART module. + * @param[in] u32Direction The direction(transmit:1/receive:0) of UART module in IrDA mode. + * + * @return None + */ +void UART_SelectIrDAMode(UART_T* uart, uint32_t u32Buadrate, uint32_t u32Direction) +{ + uint8_t u8UartClkSrcSel; + uint32_t u32ClkTbl[4] = {__HXT, 0, __HIRC, __HIRC}; + uint32_t u32Clk; + + u32ClkTbl[1] = CLK_GetPLLClockFreq(); + + u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos; + + u32Clk = (u32ClkTbl[u8UartClkSrcSel]) / (((CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos) + 1); + + uart->BAUD = UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(u32Clk, u32Buadrate); + + uart->IRDA &= ~UART_IRDA_TXINV_Msk; + uart->IRDA |= UART_IRDA_RXINV_Msk; + uart->IRDA = u32Direction ? uart->IRDA | UART_IRDA_TXEN_Msk : uart->IRDA &~ UART_IRDA_TXEN_Msk; + uart->FUNCSEL = (0x2 << UART_FUNCSEL_FUNCSEL_Pos); +} + + +/** + * @brief The function is used to set RS485 relative setting. + * + * @param[in] uart The base address of UART module. + * @param[in] u32Mode The operation mode( \ref UART_ALTCTL_RS485NMM_Msk / \ref UART_ALTCTL_RS485AUD_Msk / \ref UART_ALTCTL_RS485AAD_Msk). + * @param[in] u32Addr The RS485 address. + * + * @return None + */ +void UART_SelectRS485Mode(UART_T* uart, uint32_t u32Mode, uint32_t u32Addr) +{ + uart->FUNCSEL = UART_FUNCSEL_RS485; + uart->ALTCTL = 0; + uart->ALTCTL |= u32Mode | (u32Addr << UART_ALTCTL_ADDRMV_Pos); +} + + +/** + * @brief The function is to write data into TX buffer to transmit data by UART. + * + * @param[in] uart The base address of UART module. + * @param[in] pu8TxBuf The buffer to send the data to UART transmission FIFO. + * @param[in] u32WriteBytes The byte number of data. + * + * @return u32Count: transfer byte count + */ +uint32_t UART_Write(UART_T* uart,uint8_t *pu8TxBuf, uint32_t u32WriteBytes) +{ + uint32_t u32Count; + + for(u32Count=0; u32Count != u32WriteBytes; u32Count++) { + if(uart->FIFOSTS & UART_FIFOSTS_TXFULL_Msk) { /* Wait Tx empty and Time-out manner */ + return u32Count; + } + uart->DAT = pu8TxBuf[u32Count]; /* Send UART Data from buffer */ + } + + return u32Count; +} + + +/*@}*/ /* end of group NUC472_442_UART_EXPORTED_FUNCTIONS */ + +/*@}*/ /* end of group NUC472_442_UART_Driver */ + +/*@}*/ /* end of group NUC472_442_Device_Driver */ + +/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/ + +