Fawwaz Nadzmy
mbed library sources. Supersedes mbed-src.
Fork of
mbed-dev
by 
mbed official
Diff: targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_uart.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_uart.c Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,333 @@
+/**************************************************************************//**
+ * @file uart.c
+ * @version V1.00
+ * $Revision: 13 $
+ * $Date: 14/10/03 1:55p $
+ * @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)
+{
+ uart->BAUD = UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER(12000000, 57600);
+
+ 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. ***/
+
+