MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_uart.c@18:6a4db94011d3, 2017-05-14 (annotated)

Committer:
sahilmgandhi
Date:
Sun May 14 23:18:57 2017 +0000
Revision:
18:6a4db94011d3
Publishing again

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sahilmgandhi 18:6a4db94011d3 1 /**************************************************************************//**
sahilmgandhi 18:6a4db94011d3 2 * @file uart.c
sahilmgandhi 18:6a4db94011d3 3 * @version V3.00
sahilmgandhi 18:6a4db94011d3 4 * $Revision: 22 $
sahilmgandhi 18:6a4db94011d3 5 * $Date: 15/08/11 10:26a $
sahilmgandhi 18:6a4db94011d3 6 * @brief M451 series UART driver source file
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * @note
sahilmgandhi 18:6a4db94011d3 9 * Copyright (C) 2013~2015 Nuvoton Technology Corp. All rights reserved.
sahilmgandhi 18:6a4db94011d3 10 *****************************************************************************/
sahilmgandhi 18:6a4db94011d3 11
sahilmgandhi 18:6a4db94011d3 12 #include <stdio.h>
sahilmgandhi 18:6a4db94011d3 13 #include "M451Series.h"
sahilmgandhi 18:6a4db94011d3 14
sahilmgandhi 18:6a4db94011d3 15 /** @addtogroup Standard_Driver Standard Driver
sahilmgandhi 18:6a4db94011d3 16 @{
sahilmgandhi 18:6a4db94011d3 17 */
sahilmgandhi 18:6a4db94011d3 18
sahilmgandhi 18:6a4db94011d3 19 /** @addtogroup UART_Driver UART Driver
sahilmgandhi 18:6a4db94011d3 20 @{
sahilmgandhi 18:6a4db94011d3 21 */
sahilmgandhi 18:6a4db94011d3 22
sahilmgandhi 18:6a4db94011d3 23 /** @addtogroup UART_EXPORTED_FUNCTIONS UART Exported Functions
sahilmgandhi 18:6a4db94011d3 24 @{
sahilmgandhi 18:6a4db94011d3 25 */
sahilmgandhi 18:6a4db94011d3 26
sahilmgandhi 18:6a4db94011d3 27 /**
sahilmgandhi 18:6a4db94011d3 28 * @brief Clear UART specified interrupt flag
sahilmgandhi 18:6a4db94011d3 29 *
sahilmgandhi 18:6a4db94011d3 30 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 31 * @param[in] u32InterruptFlag The specified interrupt of UART module.
sahilmgandhi 18:6a4db94011d3 32 * - \ref UART_INTSTS_LININT_Msk : LIN bus interrupt
sahilmgandhi 18:6a4db94011d3 33 * - \ref UART_INTSTS_DATWKIF_Msk : Data Wake-up interrupt
sahilmgandhi 18:6a4db94011d3 34 * - \ref UART_INTSTS_CTSWKIF_Msk : CTS Wake-up interrupt
sahilmgandhi 18:6a4db94011d3 35 * - \ref UART_INTSTS_BUFERRINT_Msk : Buffer Error interrupt
sahilmgandhi 18:6a4db94011d3 36 * - \ref UART_INTSTS_MODEMINT_Msk : Modem Status interrupt
sahilmgandhi 18:6a4db94011d3 37 * - \ref UART_INTSTS_RLSINT_Msk : Receive Line Status interrupt
sahilmgandhi 18:6a4db94011d3 38 *
sahilmgandhi 18:6a4db94011d3 39 * @return None
sahilmgandhi 18:6a4db94011d3 40 *
sahilmgandhi 18:6a4db94011d3 41 * @details The function is used to clear UART specified interrupt flag.
sahilmgandhi 18:6a4db94011d3 42 */
sahilmgandhi 18:6a4db94011d3 43
sahilmgandhi 18:6a4db94011d3 44 void UART_ClearIntFlag(UART_T* uart , uint32_t u32InterruptFlag)
sahilmgandhi 18:6a4db94011d3 45 {
sahilmgandhi 18:6a4db94011d3 46
sahilmgandhi 18:6a4db94011d3 47 if(u32InterruptFlag & UART_INTSTS_RLSINT_Msk) /* Clear Receive Line Status Interrupt */
sahilmgandhi 18:6a4db94011d3 48 {
sahilmgandhi 18:6a4db94011d3 49 uart->FIFOSTS = UART_FIFOSTS_BIF_Msk | UART_FIFOSTS_FEF_Msk | UART_FIFOSTS_FEF_Msk;
sahilmgandhi 18:6a4db94011d3 50 uart->FIFOSTS = UART_FIFOSTS_ADDRDETF_Msk;
sahilmgandhi 18:6a4db94011d3 51 }
sahilmgandhi 18:6a4db94011d3 52
sahilmgandhi 18:6a4db94011d3 53 if(u32InterruptFlag & UART_INTSTS_MODEMINT_Msk) /* Clear Modem Status Interrupt */
sahilmgandhi 18:6a4db94011d3 54 uart->MODEMSTS |= UART_MODEMSTS_CTSDETF_Msk;
sahilmgandhi 18:6a4db94011d3 55
sahilmgandhi 18:6a4db94011d3 56 if(u32InterruptFlag & UART_INTSTS_BUFERRINT_Msk) /* Clear Buffer Error Interrupt */
sahilmgandhi 18:6a4db94011d3 57 {
sahilmgandhi 18:6a4db94011d3 58 uart->FIFOSTS = UART_FIFOSTS_RXOVIF_Msk | UART_FIFOSTS_TXOVIF_Msk;
sahilmgandhi 18:6a4db94011d3 59 }
sahilmgandhi 18:6a4db94011d3 60
sahilmgandhi 18:6a4db94011d3 61 if(u32InterruptFlag & UART_INTSTS_CTSWKIF_Msk) /* Clear CTS Wake-up Interrupt */
sahilmgandhi 18:6a4db94011d3 62 {
sahilmgandhi 18:6a4db94011d3 63 uart->INTSTS = UART_INTSTS_CTSWKIF_Msk;
sahilmgandhi 18:6a4db94011d3 64 }
sahilmgandhi 18:6a4db94011d3 65
sahilmgandhi 18:6a4db94011d3 66 if(u32InterruptFlag & UART_INTSTS_DATWKIF_Msk) /* Clear Data Wake-up Interrupt */
sahilmgandhi 18:6a4db94011d3 67 {
sahilmgandhi 18:6a4db94011d3 68 uart->INTSTS = UART_INTSTS_DATWKIF_Msk;
sahilmgandhi 18:6a4db94011d3 69 }
sahilmgandhi 18:6a4db94011d3 70
sahilmgandhi 18:6a4db94011d3 71 if(u32InterruptFlag & UART_INTSTS_LININT_Msk) /* Clear LIN Bus Interrupt */
sahilmgandhi 18:6a4db94011d3 72 {
sahilmgandhi 18:6a4db94011d3 73 uart->INTSTS = UART_INTSTS_LINIF_Msk;
sahilmgandhi 18:6a4db94011d3 74 uart->LINSTS = UART_LINSTS_BITEF_Msk | UART_LINSTS_BRKDETF_Msk |
sahilmgandhi 18:6a4db94011d3 75 UART_LINSTS_SLVSYNCF_Msk | UART_LINSTS_SLVIDPEF_Msk |
sahilmgandhi 18:6a4db94011d3 76 UART_LINSTS_SLVHEF_Msk | UART_LINSTS_SLVHDETF_Msk ;
sahilmgandhi 18:6a4db94011d3 77 }
sahilmgandhi 18:6a4db94011d3 78 }
sahilmgandhi 18:6a4db94011d3 79
sahilmgandhi 18:6a4db94011d3 80
sahilmgandhi 18:6a4db94011d3 81 /**
sahilmgandhi 18:6a4db94011d3 82 * @brief Disable UART interrupt
sahilmgandhi 18:6a4db94011d3 83 *
sahilmgandhi 18:6a4db94011d3 84 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 85 *
sahilmgandhi 18:6a4db94011d3 86 * @return None
sahilmgandhi 18:6a4db94011d3 87 *
sahilmgandhi 18:6a4db94011d3 88 * @details The function is used to disable UART interrupt.
sahilmgandhi 18:6a4db94011d3 89 */
sahilmgandhi 18:6a4db94011d3 90 void UART_Close(UART_T* uart)
sahilmgandhi 18:6a4db94011d3 91 {
sahilmgandhi 18:6a4db94011d3 92 uart->INTEN = 0;
sahilmgandhi 18:6a4db94011d3 93 }
sahilmgandhi 18:6a4db94011d3 94
sahilmgandhi 18:6a4db94011d3 95
sahilmgandhi 18:6a4db94011d3 96 /**
sahilmgandhi 18:6a4db94011d3 97 * @brief Disable UART auto flow control function
sahilmgandhi 18:6a4db94011d3 98 *
sahilmgandhi 18:6a4db94011d3 99 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 100 *
sahilmgandhi 18:6a4db94011d3 101 * @return None
sahilmgandhi 18:6a4db94011d3 102 *
sahilmgandhi 18:6a4db94011d3 103 * @details The function is used to disable UART auto flow control.
sahilmgandhi 18:6a4db94011d3 104 */
sahilmgandhi 18:6a4db94011d3 105 void UART_DisableFlowCtrl(UART_T* uart)
sahilmgandhi 18:6a4db94011d3 106 {
sahilmgandhi 18:6a4db94011d3 107 uart->INTEN &= ~(UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk);
sahilmgandhi 18:6a4db94011d3 108 }
sahilmgandhi 18:6a4db94011d3 109
sahilmgandhi 18:6a4db94011d3 110
sahilmgandhi 18:6a4db94011d3 111 /**
sahilmgandhi 18:6a4db94011d3 112 * @brief Disable UART specified interrupt
sahilmgandhi 18:6a4db94011d3 113 *
sahilmgandhi 18:6a4db94011d3 114 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 115 * @param[in] u32InterruptFlag The specified interrupt of UART module.
sahilmgandhi 18:6a4db94011d3 116 * - \ref UART_INTEN_WKCTSIEN_Msk : CTS wake-up interrupt
sahilmgandhi 18:6a4db94011d3 117 * - \ref UART_INTEN_WKDATIEN_Msk : Data wake-up interrupt
sahilmgandhi 18:6a4db94011d3 118 * - \ref UART_INTEN_LINIEN_Msk : Lin bus interrupt
sahilmgandhi 18:6a4db94011d3 119 * - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt
sahilmgandhi 18:6a4db94011d3 120 * - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt
sahilmgandhi 18:6a4db94011d3 121 * - \ref UART_INTEN_MODEMIEN_Msk : Modem status interrupt
sahilmgandhi 18:6a4db94011d3 122 * - \ref UART_INTEN_RLSIEN_Msk : Receive Line status interrupt
sahilmgandhi 18:6a4db94011d3 123 * - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt
sahilmgandhi 18:6a4db94011d3 124 * - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt *
sahilmgandhi 18:6a4db94011d3 125 *
sahilmgandhi 18:6a4db94011d3 126 * @return None
sahilmgandhi 18:6a4db94011d3 127 *
sahilmgandhi 18:6a4db94011d3 128 * @details The function is used to disable UART specified interrupt and disable NVIC UART IRQ.
sahilmgandhi 18:6a4db94011d3 129 */
sahilmgandhi 18:6a4db94011d3 130 void UART_DisableInt(UART_T* uart, uint32_t u32InterruptFlag)
sahilmgandhi 18:6a4db94011d3 131 {
sahilmgandhi 18:6a4db94011d3 132 /* Disable UART specified interrupt */
sahilmgandhi 18:6a4db94011d3 133 UART_DISABLE_INT(uart, u32InterruptFlag);
sahilmgandhi 18:6a4db94011d3 134
sahilmgandhi 18:6a4db94011d3 135 /* Disable NVIC UART IRQ */
sahilmgandhi 18:6a4db94011d3 136 if(uart == UART0)
sahilmgandhi 18:6a4db94011d3 137 NVIC_DisableIRQ(UART0_IRQn);
sahilmgandhi 18:6a4db94011d3 138 else if(uart == UART1)
sahilmgandhi 18:6a4db94011d3 139 NVIC_DisableIRQ(UART1_IRQn);
sahilmgandhi 18:6a4db94011d3 140 else if(uart == UART2)
sahilmgandhi 18:6a4db94011d3 141 NVIC_DisableIRQ(UART2_IRQn);
sahilmgandhi 18:6a4db94011d3 142 else
sahilmgandhi 18:6a4db94011d3 143 NVIC_DisableIRQ(UART3_IRQn);
sahilmgandhi 18:6a4db94011d3 144 }
sahilmgandhi 18:6a4db94011d3 145
sahilmgandhi 18:6a4db94011d3 146
sahilmgandhi 18:6a4db94011d3 147 /**
sahilmgandhi 18:6a4db94011d3 148 * @brief Enable UART auto flow control function
sahilmgandhi 18:6a4db94011d3 149 *
sahilmgandhi 18:6a4db94011d3 150 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 151 *
sahilmgandhi 18:6a4db94011d3 152 * @return None
sahilmgandhi 18:6a4db94011d3 153 *
sahilmgandhi 18:6a4db94011d3 154 * @details The function is used to Enable UART auto flow control.
sahilmgandhi 18:6a4db94011d3 155 */
sahilmgandhi 18:6a4db94011d3 156 void UART_EnableFlowCtrl(UART_T* uart)
sahilmgandhi 18:6a4db94011d3 157 {
sahilmgandhi 18:6a4db94011d3 158 /* Set RTS pin output is low level active */
sahilmgandhi 18:6a4db94011d3 159 uart->MODEM |= UART_MODEM_RTSACTLV_Msk;
sahilmgandhi 18:6a4db94011d3 160
sahilmgandhi 18:6a4db94011d3 161 /* Set CTS pin input is low level active */
sahilmgandhi 18:6a4db94011d3 162 uart->MODEMSTS |= UART_MODEMSTS_CTSACTLV_Msk;
sahilmgandhi 18:6a4db94011d3 163
sahilmgandhi 18:6a4db94011d3 164 /* Set RTS and CTS auto flow control enable */
sahilmgandhi 18:6a4db94011d3 165 uart->INTEN |= UART_INTEN_ATORTSEN_Msk | UART_INTEN_ATOCTSEN_Msk;
sahilmgandhi 18:6a4db94011d3 166 }
sahilmgandhi 18:6a4db94011d3 167
sahilmgandhi 18:6a4db94011d3 168
sahilmgandhi 18:6a4db94011d3 169 /**
sahilmgandhi 18:6a4db94011d3 170 * @brief The function is used to enable UART specified interrupt and enable NVIC UART IRQ.
sahilmgandhi 18:6a4db94011d3 171 *
sahilmgandhi 18:6a4db94011d3 172 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 173 * @param[in] u32InterruptFlag The specified interrupt of UART module:
sahilmgandhi 18:6a4db94011d3 174 * - \ref UART_INTEN_WKCTSIEN_Msk : CTS wake-up interrupt
sahilmgandhi 18:6a4db94011d3 175 * - \ref UART_INTEN_WKDATIEN_Msk : Data wake-up interrupt
sahilmgandhi 18:6a4db94011d3 176 * - \ref UART_INTEN_LINIEN_Msk : Lin bus interrupt
sahilmgandhi 18:6a4db94011d3 177 * - \ref UART_INTEN_BUFERRIEN_Msk : Buffer Error interrupt
sahilmgandhi 18:6a4db94011d3 178 * - \ref UART_INTEN_RXTOIEN_Msk : Rx time-out interrupt
sahilmgandhi 18:6a4db94011d3 179 * - \ref UART_INTEN_MODEMIEN_Msk : Modem status interrupt
sahilmgandhi 18:6a4db94011d3 180 * - \ref UART_INTEN_RLSIEN_Msk : Receive Line status interrupt
sahilmgandhi 18:6a4db94011d3 181 * - \ref UART_INTEN_THREIEN_Msk : Tx empty interrupt
sahilmgandhi 18:6a4db94011d3 182 * - \ref UART_INTEN_RDAIEN_Msk : Rx ready interrupt *
sahilmgandhi 18:6a4db94011d3 183 *
sahilmgandhi 18:6a4db94011d3 184 * @return None
sahilmgandhi 18:6a4db94011d3 185 *
sahilmgandhi 18:6a4db94011d3 186 * @details The function is used to enable UART specified interrupt and enable NVIC UART IRQ.
sahilmgandhi 18:6a4db94011d3 187 */
sahilmgandhi 18:6a4db94011d3 188 void UART_EnableInt(UART_T* uart, uint32_t u32InterruptFlag)
sahilmgandhi 18:6a4db94011d3 189 {
sahilmgandhi 18:6a4db94011d3 190
sahilmgandhi 18:6a4db94011d3 191 /* Enable UART specified interrupt */
sahilmgandhi 18:6a4db94011d3 192 UART_ENABLE_INT(uart, u32InterruptFlag);
sahilmgandhi 18:6a4db94011d3 193
sahilmgandhi 18:6a4db94011d3 194 /* Enable NVIC UART IRQ */
sahilmgandhi 18:6a4db94011d3 195 if(uart == UART0)
sahilmgandhi 18:6a4db94011d3 196 NVIC_EnableIRQ(UART0_IRQn);
sahilmgandhi 18:6a4db94011d3 197 else if(uart == UART1)
sahilmgandhi 18:6a4db94011d3 198 NVIC_EnableIRQ(UART1_IRQn);
sahilmgandhi 18:6a4db94011d3 199 else if(uart == UART2)
sahilmgandhi 18:6a4db94011d3 200 NVIC_EnableIRQ(UART2_IRQn);
sahilmgandhi 18:6a4db94011d3 201 else
sahilmgandhi 18:6a4db94011d3 202 NVIC_EnableIRQ(UART3_IRQn);
sahilmgandhi 18:6a4db94011d3 203
sahilmgandhi 18:6a4db94011d3 204 }
sahilmgandhi 18:6a4db94011d3 205
sahilmgandhi 18:6a4db94011d3 206
sahilmgandhi 18:6a4db94011d3 207 /**
sahilmgandhi 18:6a4db94011d3 208 * @brief Open and set UART function
sahilmgandhi 18:6a4db94011d3 209 *
sahilmgandhi 18:6a4db94011d3 210 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 211 * @param[in] u32baudrate The baudrate of UART module.
sahilmgandhi 18:6a4db94011d3 212 *
sahilmgandhi 18:6a4db94011d3 213 * @return None
sahilmgandhi 18:6a4db94011d3 214 *
sahilmgandhi 18:6a4db94011d3 215 * @details This function use to enable UART function and set baud-rate.
sahilmgandhi 18:6a4db94011d3 216 */
sahilmgandhi 18:6a4db94011d3 217 void UART_Open(UART_T* uart, uint32_t u32baudrate)
sahilmgandhi 18:6a4db94011d3 218 {
sahilmgandhi 18:6a4db94011d3 219 uint8_t u8UartClkSrcSel, u8UartClkDivNum;
sahilmgandhi 18:6a4db94011d3 220 uint32_t u32ClkTbl[4] = {__HXT, 0, __LXT, __HIRC};
sahilmgandhi 18:6a4db94011d3 221 uint32_t u32Baud_Div = 0;
sahilmgandhi 18:6a4db94011d3 222
sahilmgandhi 18:6a4db94011d3 223 /* Get UART clock source selection */
sahilmgandhi 18:6a4db94011d3 224 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
sahilmgandhi 18:6a4db94011d3 225
sahilmgandhi 18:6a4db94011d3 226 /* Get UART clock divider number */
sahilmgandhi 18:6a4db94011d3 227 u8UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos;
sahilmgandhi 18:6a4db94011d3 228
sahilmgandhi 18:6a4db94011d3 229 /* Select UART function */
sahilmgandhi 18:6a4db94011d3 230 uart->FUNCSEL = UART_FUNCSEL_UART;
sahilmgandhi 18:6a4db94011d3 231
sahilmgandhi 18:6a4db94011d3 232 /* Set UART line configuration */
sahilmgandhi 18:6a4db94011d3 233 uart->LINE = UART_WORD_LEN_8 | UART_PARITY_NONE | UART_STOP_BIT_1;
sahilmgandhi 18:6a4db94011d3 234
sahilmgandhi 18:6a4db94011d3 235 /* Set UART Rx and RTS trigger level */
sahilmgandhi 18:6a4db94011d3 236 uart->FIFO &= ~(UART_FIFO_RFITL_Msk | UART_FIFO_RTSTRGLV_Msk);
sahilmgandhi 18:6a4db94011d3 237
sahilmgandhi 18:6a4db94011d3 238 /* Get PLL clock frequency if UART clock source selection is PLL */
sahilmgandhi 18:6a4db94011d3 239 if(u8UartClkSrcSel == 1)
sahilmgandhi 18:6a4db94011d3 240 u32ClkTbl[u8UartClkSrcSel] = CLK_GetPLLClockFreq();
sahilmgandhi 18:6a4db94011d3 241
sahilmgandhi 18:6a4db94011d3 242 /* Set UART baud rate */
sahilmgandhi 18:6a4db94011d3 243 if(u32baudrate != 0)
sahilmgandhi 18:6a4db94011d3 244 {
sahilmgandhi 18:6a4db94011d3 245 u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate);
sahilmgandhi 18:6a4db94011d3 246
sahilmgandhi 18:6a4db94011d3 247 if(u32Baud_Div > 0xFFFF)
sahilmgandhi 18:6a4db94011d3 248 uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate));
sahilmgandhi 18:6a4db94011d3 249 else
sahilmgandhi 18:6a4db94011d3 250 uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
sahilmgandhi 18:6a4db94011d3 251 }
sahilmgandhi 18:6a4db94011d3 252 }
sahilmgandhi 18:6a4db94011d3 253
sahilmgandhi 18:6a4db94011d3 254
sahilmgandhi 18:6a4db94011d3 255 /**
sahilmgandhi 18:6a4db94011d3 256 * @brief Read UART data
sahilmgandhi 18:6a4db94011d3 257 *
sahilmgandhi 18:6a4db94011d3 258 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 259 * @param[in] pu8RxBuf The buffer to receive the data of receive FIFO.
sahilmgandhi 18:6a4db94011d3 260 * @param[in] u32ReadBytes The the read bytes number of data.
sahilmgandhi 18:6a4db94011d3 261 *
sahilmgandhi 18:6a4db94011d3 262 * @return u32Count Receive byte count
sahilmgandhi 18:6a4db94011d3 263 *
sahilmgandhi 18:6a4db94011d3 264 * @details The function is used to read Rx data from RX FIFO and the data will be stored in pu8RxBuf.
sahilmgandhi 18:6a4db94011d3 265 */
sahilmgandhi 18:6a4db94011d3 266 uint32_t UART_Read(UART_T* uart, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
sahilmgandhi 18:6a4db94011d3 267 {
sahilmgandhi 18:6a4db94011d3 268 uint32_t u32Count, u32delayno;
sahilmgandhi 18:6a4db94011d3 269
sahilmgandhi 18:6a4db94011d3 270 for(u32Count = 0; u32Count < u32ReadBytes; u32Count++)
sahilmgandhi 18:6a4db94011d3 271 {
sahilmgandhi 18:6a4db94011d3 272 u32delayno = 0;
sahilmgandhi 18:6a4db94011d3 273
sahilmgandhi 18:6a4db94011d3 274 while(uart->FIFOSTS & UART_FIFOSTS_RXEMPTY_Msk) /* Check RX empty => failed */
sahilmgandhi 18:6a4db94011d3 275 {
sahilmgandhi 18:6a4db94011d3 276 u32delayno++;
sahilmgandhi 18:6a4db94011d3 277 if(u32delayno >= 0x40000000)
sahilmgandhi 18:6a4db94011d3 278 return FALSE;
sahilmgandhi 18:6a4db94011d3 279 }
sahilmgandhi 18:6a4db94011d3 280 pu8RxBuf[u32Count] = uart->DAT; /* Get Data from UART RX */
sahilmgandhi 18:6a4db94011d3 281 }
sahilmgandhi 18:6a4db94011d3 282
sahilmgandhi 18:6a4db94011d3 283 return u32Count;
sahilmgandhi 18:6a4db94011d3 284
sahilmgandhi 18:6a4db94011d3 285 }
sahilmgandhi 18:6a4db94011d3 286
sahilmgandhi 18:6a4db94011d3 287
sahilmgandhi 18:6a4db94011d3 288 /**
sahilmgandhi 18:6a4db94011d3 289 * @brief Set UART line configuration
sahilmgandhi 18:6a4db94011d3 290 *
sahilmgandhi 18:6a4db94011d3 291 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 292 * @param[in] u32baudrate The register value of baudrate of UART module.
sahilmgandhi 18:6a4db94011d3 293 * If u32baudrate = 0, UART baudrate will not change.
sahilmgandhi 18:6a4db94011d3 294 * @param[in] u32data_width The data length of UART module.
sahilmgandhi 18:6a4db94011d3 295 * - \ref UART_WORD_LEN_5
sahilmgandhi 18:6a4db94011d3 296 * - \ref UART_WORD_LEN_6
sahilmgandhi 18:6a4db94011d3 297 * - \ref UART_WORD_LEN_7
sahilmgandhi 18:6a4db94011d3 298 * - \ref UART_WORD_LEN_8
sahilmgandhi 18:6a4db94011d3 299 * @param[in] u32parity The parity setting (none/odd/even/mark/space) of UART module.
sahilmgandhi 18:6a4db94011d3 300 * - \ref UART_PARITY_NONE
sahilmgandhi 18:6a4db94011d3 301 * - \ref UART_PARITY_ODD
sahilmgandhi 18:6a4db94011d3 302 * - \ref UART_PARITY_EVEN
sahilmgandhi 18:6a4db94011d3 303 * - \ref UART_PARITY_MARK
sahilmgandhi 18:6a4db94011d3 304 * - \ref UART_PARITY_SPACE
sahilmgandhi 18:6a4db94011d3 305 * @param[in] u32stop_bits The stop bit length (1/1.5/2 bit) of UART module.
sahilmgandhi 18:6a4db94011d3 306 * - \ref UART_STOP_BIT_1
sahilmgandhi 18:6a4db94011d3 307 * - \ref UART_STOP_BIT_1_5
sahilmgandhi 18:6a4db94011d3 308 * - \ref UART_STOP_BIT_2
sahilmgandhi 18:6a4db94011d3 309 *
sahilmgandhi 18:6a4db94011d3 310 * @return None
sahilmgandhi 18:6a4db94011d3 311 *
sahilmgandhi 18:6a4db94011d3 312 * @details This function use to config UART line setting.
sahilmgandhi 18:6a4db94011d3 313 */
sahilmgandhi 18:6a4db94011d3 314 void UART_SetLine_Config(UART_T* uart, uint32_t u32baudrate, uint32_t u32data_width, uint32_t u32parity, uint32_t u32stop_bits)
sahilmgandhi 18:6a4db94011d3 315 {
sahilmgandhi 18:6a4db94011d3 316 uint8_t u8UartClkSrcSel, u8UartClkDivNum;
sahilmgandhi 18:6a4db94011d3 317 uint32_t u32ClkTbl[4] = {__HXT, 0, __LXT, __HIRC};
sahilmgandhi 18:6a4db94011d3 318 uint32_t u32Baud_Div = 0;
sahilmgandhi 18:6a4db94011d3 319
sahilmgandhi 18:6a4db94011d3 320 /* Get UART clock source selection */
sahilmgandhi 18:6a4db94011d3 321 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
sahilmgandhi 18:6a4db94011d3 322
sahilmgandhi 18:6a4db94011d3 323 /* Get UART clock divider number */
sahilmgandhi 18:6a4db94011d3 324 u8UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos;
sahilmgandhi 18:6a4db94011d3 325
sahilmgandhi 18:6a4db94011d3 326 /* Get PLL clock frequency if UART clock source selection is PLL */
sahilmgandhi 18:6a4db94011d3 327 if(u8UartClkSrcSel == 1)
sahilmgandhi 18:6a4db94011d3 328 u32ClkTbl[u8UartClkSrcSel] = CLK_GetPLLClockFreq();
sahilmgandhi 18:6a4db94011d3 329
sahilmgandhi 18:6a4db94011d3 330 /* Set UART baud rate */
sahilmgandhi 18:6a4db94011d3 331 if(u32baudrate != 0)
sahilmgandhi 18:6a4db94011d3 332 {
sahilmgandhi 18:6a4db94011d3 333 u32Baud_Div = UART_BAUD_MODE2_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate);
sahilmgandhi 18:6a4db94011d3 334
sahilmgandhi 18:6a4db94011d3 335 if(u32Baud_Div > 0xFFFF)
sahilmgandhi 18:6a4db94011d3 336 uart->BAUD = (UART_BAUD_MODE0 | UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32baudrate));
sahilmgandhi 18:6a4db94011d3 337 else
sahilmgandhi 18:6a4db94011d3 338 uart->BAUD = (UART_BAUD_MODE2 | u32Baud_Div);
sahilmgandhi 18:6a4db94011d3 339 }
sahilmgandhi 18:6a4db94011d3 340
sahilmgandhi 18:6a4db94011d3 341 /* Set UART line configuration */
sahilmgandhi 18:6a4db94011d3 342 uart->LINE = u32data_width | u32parity | u32stop_bits;
sahilmgandhi 18:6a4db94011d3 343 }
sahilmgandhi 18:6a4db94011d3 344
sahilmgandhi 18:6a4db94011d3 345
sahilmgandhi 18:6a4db94011d3 346 /**
sahilmgandhi 18:6a4db94011d3 347 * @brief Set Rx timeout count
sahilmgandhi 18:6a4db94011d3 348 *
sahilmgandhi 18:6a4db94011d3 349 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 350 * @param[in] u32TOC Rx timeout counter.
sahilmgandhi 18:6a4db94011d3 351 *
sahilmgandhi 18:6a4db94011d3 352 * @return None
sahilmgandhi 18:6a4db94011d3 353 *
sahilmgandhi 18:6a4db94011d3 354 * @details This function use to set Rx timeout count.
sahilmgandhi 18:6a4db94011d3 355 */
sahilmgandhi 18:6a4db94011d3 356 void UART_SetTimeoutCnt(UART_T* uart, uint32_t u32TOC)
sahilmgandhi 18:6a4db94011d3 357 {
sahilmgandhi 18:6a4db94011d3 358 /* Set time-out interrupt comparator */
sahilmgandhi 18:6a4db94011d3 359 uart->TOUT = (uart->TOUT & ~UART_TOUT_TOIC_Msk) | (u32TOC);
sahilmgandhi 18:6a4db94011d3 360
sahilmgandhi 18:6a4db94011d3 361 /* Set time-out counter enable */
sahilmgandhi 18:6a4db94011d3 362 uart->INTEN |= UART_INTEN_TOCNTEN_Msk;
sahilmgandhi 18:6a4db94011d3 363 }
sahilmgandhi 18:6a4db94011d3 364
sahilmgandhi 18:6a4db94011d3 365
sahilmgandhi 18:6a4db94011d3 366 /**
sahilmgandhi 18:6a4db94011d3 367 * @brief Select and configure IrDA function
sahilmgandhi 18:6a4db94011d3 368 *
sahilmgandhi 18:6a4db94011d3 369 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 370 * @param[in] u32Buadrate The baudrate of UART module.
sahilmgandhi 18:6a4db94011d3 371 * @param[in] u32Direction The direction of UART module in IrDA mode:
sahilmgandhi 18:6a4db94011d3 372 * - \ref UART_IRDA_TXEN
sahilmgandhi 18:6a4db94011d3 373 * - \ref UART_IRDA_RXEN
sahilmgandhi 18:6a4db94011d3 374 *
sahilmgandhi 18:6a4db94011d3 375 * @return None
sahilmgandhi 18:6a4db94011d3 376 *
sahilmgandhi 18:6a4db94011d3 377 * @details The function is used to configure IrDA relative settings. It consists of TX or RX mode and baudrate.
sahilmgandhi 18:6a4db94011d3 378 */
sahilmgandhi 18:6a4db94011d3 379 void UART_SelectIrDAMode(UART_T* uart, uint32_t u32Buadrate, uint32_t u32Direction)
sahilmgandhi 18:6a4db94011d3 380 {
sahilmgandhi 18:6a4db94011d3 381 uint8_t u8UartClkSrcSel, u8UartClkDivNum;
sahilmgandhi 18:6a4db94011d3 382 uint32_t u32ClkTbl[4] = {__HXT, 0, __LXT, __HIRC};
sahilmgandhi 18:6a4db94011d3 383 uint32_t u32Baud_Div;
sahilmgandhi 18:6a4db94011d3 384
sahilmgandhi 18:6a4db94011d3 385 /* Select IrDA function mode */
sahilmgandhi 18:6a4db94011d3 386 uart->FUNCSEL = UART_FUNCSEL_IrDA;
sahilmgandhi 18:6a4db94011d3 387
sahilmgandhi 18:6a4db94011d3 388 /* Get UART clock source selection */
sahilmgandhi 18:6a4db94011d3 389 u8UartClkSrcSel = (CLK->CLKSEL1 & CLK_CLKSEL1_UARTSEL_Msk) >> CLK_CLKSEL1_UARTSEL_Pos;
sahilmgandhi 18:6a4db94011d3 390
sahilmgandhi 18:6a4db94011d3 391 /* Get UART clock divider number */
sahilmgandhi 18:6a4db94011d3 392 u8UartClkDivNum = (CLK->CLKDIV0 & CLK_CLKDIV0_UARTDIV_Msk) >> CLK_CLKDIV0_UARTDIV_Pos;
sahilmgandhi 18:6a4db94011d3 393
sahilmgandhi 18:6a4db94011d3 394 /* Get PLL clock frequency if UART clock source selection is PLL */
sahilmgandhi 18:6a4db94011d3 395 if(u8UartClkSrcSel == 1)
sahilmgandhi 18:6a4db94011d3 396 u32ClkTbl[u8UartClkSrcSel] = CLK_GetPLLClockFreq();
sahilmgandhi 18:6a4db94011d3 397
sahilmgandhi 18:6a4db94011d3 398 /* Set UART IrDA baud rate in mode 0 */
sahilmgandhi 18:6a4db94011d3 399 if(u32Buadrate != 0)
sahilmgandhi 18:6a4db94011d3 400 {
sahilmgandhi 18:6a4db94011d3 401 u32Baud_Div = UART_BAUD_MODE0_DIVIDER((u32ClkTbl[u8UartClkSrcSel]) / (u8UartClkDivNum + 1), u32Buadrate);
sahilmgandhi 18:6a4db94011d3 402
sahilmgandhi 18:6a4db94011d3 403 if(u32Baud_Div < 0xFFFF)
sahilmgandhi 18:6a4db94011d3 404 uart->BAUD = (UART_BAUD_MODE0 | u32Baud_Div);
sahilmgandhi 18:6a4db94011d3 405 }
sahilmgandhi 18:6a4db94011d3 406
sahilmgandhi 18:6a4db94011d3 407 /* Configure IrDA relative settings */
sahilmgandhi 18:6a4db94011d3 408 if(u32Direction == UART_IRDA_RXEN)
sahilmgandhi 18:6a4db94011d3 409 {
sahilmgandhi 18:6a4db94011d3 410 uart->IRDA |= UART_IRDA_RXINV_Msk; //Rx signal is inverse
sahilmgandhi 18:6a4db94011d3 411 uart->IRDA &= ~UART_IRDA_TXEN_Msk;
sahilmgandhi 18:6a4db94011d3 412 }
sahilmgandhi 18:6a4db94011d3 413 else
sahilmgandhi 18:6a4db94011d3 414 {
sahilmgandhi 18:6a4db94011d3 415 uart->IRDA &= ~UART_IRDA_TXINV_Msk; //Tx signal is not inverse
sahilmgandhi 18:6a4db94011d3 416 uart->IRDA |= UART_IRDA_TXEN_Msk;
sahilmgandhi 18:6a4db94011d3 417 }
sahilmgandhi 18:6a4db94011d3 418
sahilmgandhi 18:6a4db94011d3 419 }
sahilmgandhi 18:6a4db94011d3 420
sahilmgandhi 18:6a4db94011d3 421
sahilmgandhi 18:6a4db94011d3 422 /**
sahilmgandhi 18:6a4db94011d3 423 * @brief Select and configure RS485 function
sahilmgandhi 18:6a4db94011d3 424 *
sahilmgandhi 18:6a4db94011d3 425 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 426 * @param[in] u32Mode The operation mode(NMM/AUD/AAD).
sahilmgandhi 18:6a4db94011d3 427 * - \ref UART_ALTCTL_RS485NMM_Msk
sahilmgandhi 18:6a4db94011d3 428 * - \ref UART_ALTCTL_RS485AUD_Msk
sahilmgandhi 18:6a4db94011d3 429 * - \ref UART_ALTCTL_RS485AAD_Msk
sahilmgandhi 18:6a4db94011d3 430 * @param[in] u32Addr The RS485 address.
sahilmgandhi 18:6a4db94011d3 431 *
sahilmgandhi 18:6a4db94011d3 432 * @return None
sahilmgandhi 18:6a4db94011d3 433 *
sahilmgandhi 18:6a4db94011d3 434 * @details The function is used to set RS485 relative setting.
sahilmgandhi 18:6a4db94011d3 435 */
sahilmgandhi 18:6a4db94011d3 436 void UART_SelectRS485Mode(UART_T* uart, uint32_t u32Mode, uint32_t u32Addr)
sahilmgandhi 18:6a4db94011d3 437 {
sahilmgandhi 18:6a4db94011d3 438 /* Select UART RS485 function mode */
sahilmgandhi 18:6a4db94011d3 439 uart->FUNCSEL = UART_FUNCSEL_RS485;
sahilmgandhi 18:6a4db94011d3 440
sahilmgandhi 18:6a4db94011d3 441 /* Set RS585 configuration */
sahilmgandhi 18:6a4db94011d3 442 uart->ALTCTL &= ~(UART_ALTCTL_RS485NMM_Msk | UART_ALTCTL_RS485AUD_Msk | UART_ALTCTL_RS485AAD_Msk | UART_ALTCTL_ADDRMV_Msk);
sahilmgandhi 18:6a4db94011d3 443 uart->ALTCTL |= (u32Mode | (u32Addr << UART_ALTCTL_ADDRMV_Pos));
sahilmgandhi 18:6a4db94011d3 444 }
sahilmgandhi 18:6a4db94011d3 445
sahilmgandhi 18:6a4db94011d3 446
sahilmgandhi 18:6a4db94011d3 447 /**
sahilmgandhi 18:6a4db94011d3 448 * @brief Select and configure LIN function
sahilmgandhi 18:6a4db94011d3 449 *
sahilmgandhi 18:6a4db94011d3 450 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 451 * @param[in] u32Mode The LIN direction :
sahilmgandhi 18:6a4db94011d3 452 * - \ref UART_ALTCTL_LINTXEN_Msk
sahilmgandhi 18:6a4db94011d3 453 * - \ref UART_ALTCTL_LINRXEN_Msk
sahilmgandhi 18:6a4db94011d3 454 * @param[in] u32BreakLength The breakfield length.
sahilmgandhi 18:6a4db94011d3 455 *
sahilmgandhi 18:6a4db94011d3 456 * @return None
sahilmgandhi 18:6a4db94011d3 457 *
sahilmgandhi 18:6a4db94011d3 458 * @details The function is used to set LIN relative setting.
sahilmgandhi 18:6a4db94011d3 459 */
sahilmgandhi 18:6a4db94011d3 460 void UART_SelectLINMode(UART_T* uart, uint32_t u32Mode, uint32_t u32BreakLength)
sahilmgandhi 18:6a4db94011d3 461 {
sahilmgandhi 18:6a4db94011d3 462 /* Select LIN function mode */
sahilmgandhi 18:6a4db94011d3 463 uart->FUNCSEL = UART_FUNCSEL_LIN;
sahilmgandhi 18:6a4db94011d3 464
sahilmgandhi 18:6a4db94011d3 465 /* Select LIN function setting : Tx enable, Rx enable and break field length */
sahilmgandhi 18:6a4db94011d3 466 uart->ALTCTL &= ~(UART_ALTCTL_LINTXEN_Msk | UART_ALTCTL_LINRXEN_Msk | UART_ALTCTL_BRKFL_Msk);
sahilmgandhi 18:6a4db94011d3 467 uart->ALTCTL |= (u32Mode | (u32BreakLength << UART_ALTCTL_BRKFL_Pos));
sahilmgandhi 18:6a4db94011d3 468 }
sahilmgandhi 18:6a4db94011d3 469
sahilmgandhi 18:6a4db94011d3 470
sahilmgandhi 18:6a4db94011d3 471 /**
sahilmgandhi 18:6a4db94011d3 472 * @brief Write UART data
sahilmgandhi 18:6a4db94011d3 473 *
sahilmgandhi 18:6a4db94011d3 474 * @param[in] uart The pointer of the specified UART module.
sahilmgandhi 18:6a4db94011d3 475 * @param[in] pu8TxBuf The buffer to send the data to UART transmission FIFO.
sahilmgandhi 18:6a4db94011d3 476 * @param[out] u32WriteBytes The byte number of data.
sahilmgandhi 18:6a4db94011d3 477 *
sahilmgandhi 18:6a4db94011d3 478 * @return u32Count transfer byte count
sahilmgandhi 18:6a4db94011d3 479 *
sahilmgandhi 18:6a4db94011d3 480 * @details The function is to write data into TX buffer to transmit data by UART.
sahilmgandhi 18:6a4db94011d3 481 */
sahilmgandhi 18:6a4db94011d3 482 uint32_t UART_Write(UART_T* uart, uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
sahilmgandhi 18:6a4db94011d3 483 {
sahilmgandhi 18:6a4db94011d3 484 uint32_t u32Count, u32delayno;
sahilmgandhi 18:6a4db94011d3 485
sahilmgandhi 18:6a4db94011d3 486 for(u32Count = 0; u32Count != u32WriteBytes; u32Count++)
sahilmgandhi 18:6a4db94011d3 487 {
sahilmgandhi 18:6a4db94011d3 488 u32delayno = 0;
sahilmgandhi 18:6a4db94011d3 489 while((uart->FIFOSTS & UART_FIFOSTS_TXEMPTYF_Msk) == 0) /* Wait Tx empty and Time-out manner */
sahilmgandhi 18:6a4db94011d3 490 {
sahilmgandhi 18:6a4db94011d3 491 u32delayno++;
sahilmgandhi 18:6a4db94011d3 492 if(u32delayno >= 0x40000000)
sahilmgandhi 18:6a4db94011d3 493 return FALSE;
sahilmgandhi 18:6a4db94011d3 494 }
sahilmgandhi 18:6a4db94011d3 495 uart->DAT = pu8TxBuf[u32Count]; /* Send UART Data from buffer */
sahilmgandhi 18:6a4db94011d3 496 }
sahilmgandhi 18:6a4db94011d3 497
sahilmgandhi 18:6a4db94011d3 498 return u32Count;
sahilmgandhi 18:6a4db94011d3 499
sahilmgandhi 18:6a4db94011d3 500 }
sahilmgandhi 18:6a4db94011d3 501
sahilmgandhi 18:6a4db94011d3 502
sahilmgandhi 18:6a4db94011d3 503 /*@}*/ /* end of group UART_EXPORTED_FUNCTIONS */
sahilmgandhi 18:6a4db94011d3 504
sahilmgandhi 18:6a4db94011d3 505 /*@}*/ /* end of group UART_Driver */
sahilmgandhi 18:6a4db94011d3 506
sahilmgandhi 18:6a4db94011d3 507 /*@}*/ /* end of group Standard_Driver */
sahilmgandhi 18:6a4db94011d3 508
sahilmgandhi 18:6a4db94011d3 509 /*** (C) COPYRIGHT 2012~2015 Nuvoton Technology Corp. ***/
sahilmgandhi 18:6a4db94011d3 510
sahilmgandhi 18:6a4db94011d3 511
sahilmgandhi 18:6a4db94011d3 512