MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NUVOTON/TARGET_NUC472/device/StdDriver/nuc472_scuart.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 scuart.c
sahilmgandhi 18:6a4db94011d3 3 * @version V1.00
sahilmgandhi 18:6a4db94011d3 4 * $Revision: 6 $
sahilmgandhi 18:6a4db94011d3 5 * $Date: 14/08/12 7:25p $
sahilmgandhi 18:6a4db94011d3 6 * @brief NUC472/NUC442 Smartcard UART mode (SCUART) driver source file
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * @note
sahilmgandhi 18:6a4db94011d3 9 * Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
sahilmgandhi 18:6a4db94011d3 10 *****************************************************************************/
sahilmgandhi 18:6a4db94011d3 11 #include "NUC472_442.h"
sahilmgandhi 18:6a4db94011d3 12
sahilmgandhi 18:6a4db94011d3 13 /** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
sahilmgandhi 18:6a4db94011d3 14 @{
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16
sahilmgandhi 18:6a4db94011d3 17 /** @addtogroup NUC472_442_SCUART_Driver SCUART Driver
sahilmgandhi 18:6a4db94011d3 18 @{
sahilmgandhi 18:6a4db94011d3 19 */
sahilmgandhi 18:6a4db94011d3 20
sahilmgandhi 18:6a4db94011d3 21
sahilmgandhi 18:6a4db94011d3 22 /** @addtogroup NUC472_442_SCUART_EXPORTED_FUNCTIONS SCUART Exported Functions
sahilmgandhi 18:6a4db94011d3 23 @{
sahilmgandhi 18:6a4db94011d3 24 */
sahilmgandhi 18:6a4db94011d3 25
sahilmgandhi 18:6a4db94011d3 26 /**
sahilmgandhi 18:6a4db94011d3 27 * @brief The function is used to disable smartcard interface UART mode.
sahilmgandhi 18:6a4db94011d3 28 * @param sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 29 * @return None
sahilmgandhi 18:6a4db94011d3 30 */
sahilmgandhi 18:6a4db94011d3 31 void SCUART_Close(SC_T* sc)
sahilmgandhi 18:6a4db94011d3 32 {
sahilmgandhi 18:6a4db94011d3 33 sc->INTEN = 0;
sahilmgandhi 18:6a4db94011d3 34 sc->UARTCTL = 0;
sahilmgandhi 18:6a4db94011d3 35 sc->CTL = 0;
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 }
sahilmgandhi 18:6a4db94011d3 38 /// @cond HIDDEN_SYMBOLS
sahilmgandhi 18:6a4db94011d3 39 /**
sahilmgandhi 18:6a4db94011d3 40 * @brief This function returns module clock of specified SC interface
sahilmgandhi 18:6a4db94011d3 41 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 42 * @return Module clock of specified SC interface
sahilmgandhi 18:6a4db94011d3 43 */
sahilmgandhi 18:6a4db94011d3 44 static uint32_t SCUART_GetClock(SC_T *sc)
sahilmgandhi 18:6a4db94011d3 45 {
sahilmgandhi 18:6a4db94011d3 46 uint32_t u32ClkSrc, u32Num, u32Clk;
sahilmgandhi 18:6a4db94011d3 47
sahilmgandhi 18:6a4db94011d3 48 if(sc == SC0)
sahilmgandhi 18:6a4db94011d3 49 u32Num = 0;
sahilmgandhi 18:6a4db94011d3 50 else if(sc == SC1)
sahilmgandhi 18:6a4db94011d3 51 u32Num = 1;
sahilmgandhi 18:6a4db94011d3 52 else if(sc == SC2)
sahilmgandhi 18:6a4db94011d3 53 u32Num = 2;
sahilmgandhi 18:6a4db94011d3 54 else if(sc == SC3)
sahilmgandhi 18:6a4db94011d3 55 u32Num = 3;
sahilmgandhi 18:6a4db94011d3 56 else if(sc == SC4)
sahilmgandhi 18:6a4db94011d3 57 u32Num = 4;
sahilmgandhi 18:6a4db94011d3 58 else
sahilmgandhi 18:6a4db94011d3 59 u32Num = 5;
sahilmgandhi 18:6a4db94011d3 60
sahilmgandhi 18:6a4db94011d3 61 u32ClkSrc = (CLK->CLKSEL3 >> (2 * u32Num)) & CLK_CLKSEL3_SC0SEL_Msk;
sahilmgandhi 18:6a4db94011d3 62
sahilmgandhi 18:6a4db94011d3 63 // Get smartcard module clock
sahilmgandhi 18:6a4db94011d3 64 if(u32ClkSrc == 0)
sahilmgandhi 18:6a4db94011d3 65 u32Clk = __HXT;
sahilmgandhi 18:6a4db94011d3 66 else if(u32ClkSrc == 1)
sahilmgandhi 18:6a4db94011d3 67 u32Clk = CLK_GetPLLClockFreq();
sahilmgandhi 18:6a4db94011d3 68 else if(u32ClkSrc == 2)
sahilmgandhi 18:6a4db94011d3 69 u32Clk = CLK_GetPCLKFreq();
sahilmgandhi 18:6a4db94011d3 70 else
sahilmgandhi 18:6a4db94011d3 71 u32Clk = __HIRC;
sahilmgandhi 18:6a4db94011d3 72
sahilmgandhi 18:6a4db94011d3 73 if(u32Num < 4) {
sahilmgandhi 18:6a4db94011d3 74 u32Clk /= (((CLK->CLKDIV1 >> (8 * u32Num)) & CLK_CLKDIV1_SC0DIV_Msk) + 1);
sahilmgandhi 18:6a4db94011d3 75 } else {
sahilmgandhi 18:6a4db94011d3 76 u32Clk /= (((CLK->CLKDIV2 >> (8 * (u32Num - 4))) & CLK_CLKDIV2_SC4DIV_Msk) + 1);
sahilmgandhi 18:6a4db94011d3 77 }
sahilmgandhi 18:6a4db94011d3 78
sahilmgandhi 18:6a4db94011d3 79 return u32Clk;
sahilmgandhi 18:6a4db94011d3 80 }
sahilmgandhi 18:6a4db94011d3 81
sahilmgandhi 18:6a4db94011d3 82 /// @endcond HIDDEN_SYMBOLS
sahilmgandhi 18:6a4db94011d3 83
sahilmgandhi 18:6a4db94011d3 84 /**
sahilmgandhi 18:6a4db94011d3 85 * @brief This function use to enable smartcard module UART mode and set baudrate.
sahilmgandhi 18:6a4db94011d3 86 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 87 * @param[in] u32baudrate Target baudrate of smartcard module.
sahilmgandhi 18:6a4db94011d3 88 * @return Actual baudrate of smartcard mode
sahilmgandhi 18:6a4db94011d3 89 * @note This function configures character width to 8 bits, 1 stop bit, and no parity.
sahilmgandhi 18:6a4db94011d3 90 * And can use \ref SCUART_SetLineConfig function to update these settings
sahilmgandhi 18:6a4db94011d3 91 */
sahilmgandhi 18:6a4db94011d3 92 uint32_t SCUART_Open(SC_T* sc, uint32_t u32baudrate)
sahilmgandhi 18:6a4db94011d3 93 {
sahilmgandhi 18:6a4db94011d3 94 uint32_t u32Clk = SCUART_GetClock(sc), u32Div;
sahilmgandhi 18:6a4db94011d3 95
sahilmgandhi 18:6a4db94011d3 96 // Calculate divider for target baudrate
sahilmgandhi 18:6a4db94011d3 97 u32Div = (u32Clk + (u32baudrate >> 1) - 1) / u32baudrate - 1;
sahilmgandhi 18:6a4db94011d3 98
sahilmgandhi 18:6a4db94011d3 99 sc->CTL = SC_CTL_SCEN_Msk | SC_CTL_NSB_Msk; // Enable smartcard interface and stop bit = 1
sahilmgandhi 18:6a4db94011d3 100 sc->UARTCTL = SCUART_CHAR_LEN_8 | SCUART_PARITY_NONE | SC_UARTCTL_UARTEN_Msk; // Enable UART mode, disable parity and 8 bit per character
sahilmgandhi 18:6a4db94011d3 101 sc->ETUCTL = u32Div;
sahilmgandhi 18:6a4db94011d3 102
sahilmgandhi 18:6a4db94011d3 103 return(u32Clk / u32Div);
sahilmgandhi 18:6a4db94011d3 104 }
sahilmgandhi 18:6a4db94011d3 105
sahilmgandhi 18:6a4db94011d3 106 /**
sahilmgandhi 18:6a4db94011d3 107 * @brief The function is used to read Rx data from RX FIFO.
sahilmgandhi 18:6a4db94011d3 108 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 109 * @param[in] pu8RxBuf The buffer to store receive the data
sahilmgandhi 18:6a4db94011d3 110 * @param[in] u32ReadBytes Target number of characters to receive
sahilmgandhi 18:6a4db94011d3 111 * @return Actual character number reads to buffer
sahilmgandhi 18:6a4db94011d3 112 * @note This function does not block and return immediately if there's no data available
sahilmgandhi 18:6a4db94011d3 113 */
sahilmgandhi 18:6a4db94011d3 114 uint32_t SCUART_Read(SC_T* sc, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
sahilmgandhi 18:6a4db94011d3 115 {
sahilmgandhi 18:6a4db94011d3 116 uint32_t u32Count;
sahilmgandhi 18:6a4db94011d3 117
sahilmgandhi 18:6a4db94011d3 118 for(u32Count = 0; u32Count < u32ReadBytes; u32Count++) {
sahilmgandhi 18:6a4db94011d3 119 if(SCUART_GET_RX_EMPTY(sc)) { // no data available
sahilmgandhi 18:6a4db94011d3 120 break;
sahilmgandhi 18:6a4db94011d3 121 }
sahilmgandhi 18:6a4db94011d3 122 pu8RxBuf[u32Count] = SCUART_READ(sc); // get data from FIFO
sahilmgandhi 18:6a4db94011d3 123 }
sahilmgandhi 18:6a4db94011d3 124
sahilmgandhi 18:6a4db94011d3 125 return u32Count;
sahilmgandhi 18:6a4db94011d3 126 }
sahilmgandhi 18:6a4db94011d3 127
sahilmgandhi 18:6a4db94011d3 128 /**
sahilmgandhi 18:6a4db94011d3 129 * @brief This function use to config smartcard UART mode line setting.
sahilmgandhi 18:6a4db94011d3 130 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 131 * @param[in] u32Baudrate Target baudrate of smartcard module. If this value is 0, UART baudrate will not change.
sahilmgandhi 18:6a4db94011d3 132 * @param[in] u32DataWidth The data length, could be
sahilmgandhi 18:6a4db94011d3 133 * - \ref SCUART_CHAR_LEN_5
sahilmgandhi 18:6a4db94011d3 134 * - \ref SCUART_CHAR_LEN_6
sahilmgandhi 18:6a4db94011d3 135 * - \ref SCUART_CHAR_LEN_7
sahilmgandhi 18:6a4db94011d3 136 * - \ref SCUART_CHAR_LEN_8
sahilmgandhi 18:6a4db94011d3 137 * @param[in] u32Parity The parity setting, could be
sahilmgandhi 18:6a4db94011d3 138 * - \ref SCUART_PARITY_NONE
sahilmgandhi 18:6a4db94011d3 139 * - \ref SCUART_PARITY_ODD
sahilmgandhi 18:6a4db94011d3 140 * - \ref SCUART_PARITY_EVEN
sahilmgandhi 18:6a4db94011d3 141 * @param[in] u32StopBits The stop bit length, could be
sahilmgandhi 18:6a4db94011d3 142 * - \ref SCUART_STOP_BIT_1
sahilmgandhi 18:6a4db94011d3 143 * - \ref SCUART_STOP_BIT_2
sahilmgandhi 18:6a4db94011d3 144 * @return Actual baudrate of smartcard
sahilmgandhi 18:6a4db94011d3 145 */
sahilmgandhi 18:6a4db94011d3 146 uint32_t SCUART_SetLineConfig(SC_T* sc, uint32_t u32Baudrate, uint32_t u32DataWidth, uint32_t u32Parity, uint32_t u32StopBits)
sahilmgandhi 18:6a4db94011d3 147 {
sahilmgandhi 18:6a4db94011d3 148
sahilmgandhi 18:6a4db94011d3 149 uint32_t u32Clk = SCUART_GetClock(sc), u32Div;
sahilmgandhi 18:6a4db94011d3 150
sahilmgandhi 18:6a4db94011d3 151 if(u32Baudrate == 0) { // keep original baudrate setting
sahilmgandhi 18:6a4db94011d3 152 u32Div = sc->ETUCTL & SC_ETUCTL_ETURDIV_Msk;
sahilmgandhi 18:6a4db94011d3 153 } else {
sahilmgandhi 18:6a4db94011d3 154 // Calculate divider for target baudrate
sahilmgandhi 18:6a4db94011d3 155 u32Div = (u32Clk + (u32Baudrate >> 1) - 1)/ u32Baudrate - 1;
sahilmgandhi 18:6a4db94011d3 156 sc->ETUCTL = u32Div;
sahilmgandhi 18:6a4db94011d3 157 }
sahilmgandhi 18:6a4db94011d3 158
sahilmgandhi 18:6a4db94011d3 159 sc->CTL = u32StopBits | SC_CTL_SCEN_Msk; // Set stop bit
sahilmgandhi 18:6a4db94011d3 160 sc->UARTCTL = u32Parity | u32StopBits | SC_UARTCTL_UARTEN_Msk; // Set character width and parity
sahilmgandhi 18:6a4db94011d3 161
sahilmgandhi 18:6a4db94011d3 162 return(u32Clk / u32Div);
sahilmgandhi 18:6a4db94011d3 163 }
sahilmgandhi 18:6a4db94011d3 164
sahilmgandhi 18:6a4db94011d3 165 /**
sahilmgandhi 18:6a4db94011d3 166 * @brief This function use to set receive timeout count.
sahilmgandhi 18:6a4db94011d3 167 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 168 * @param[in] u32TOC Rx timeout counter, using baudrate as counter unit. Valid range are 0~0x1FF,
sahilmgandhi 18:6a4db94011d3 169 * set this value to 0 will disable timeout counter
sahilmgandhi 18:6a4db94011d3 170 * @return None
sahilmgandhi 18:6a4db94011d3 171 * @details The time-out counter resets and starts counting whenever the RX buffer received a
sahilmgandhi 18:6a4db94011d3 172 * new data word. Once the counter decrease to 1 and no new data is received or CPU
sahilmgandhi 18:6a4db94011d3 173 * does not read any data from FIFO, a receiver time-out interrupt will be generated.
sahilmgandhi 18:6a4db94011d3 174 */
sahilmgandhi 18:6a4db94011d3 175 void SCUART_SetTimeoutCnt(SC_T* sc, uint32_t u32TOC)
sahilmgandhi 18:6a4db94011d3 176 {
sahilmgandhi 18:6a4db94011d3 177 sc->RXTOUT= u32TOC;
sahilmgandhi 18:6a4db94011d3 178 }
sahilmgandhi 18:6a4db94011d3 179
sahilmgandhi 18:6a4db94011d3 180
sahilmgandhi 18:6a4db94011d3 181 /**
sahilmgandhi 18:6a4db94011d3 182 * @brief This function is to write data into transmit FIFO to send data out.
sahilmgandhi 18:6a4db94011d3 183 * @param[in] sc The base address of smartcard module.
sahilmgandhi 18:6a4db94011d3 184 * @param[in] pu8TxBuf The buffer containing data to send to transmit FIFO.
sahilmgandhi 18:6a4db94011d3 185 * @param[in] u32WriteBytes Number of data to send.
sahilmgandhi 18:6a4db94011d3 186 * @return None
sahilmgandhi 18:6a4db94011d3 187 * @note This function blocks until all data write into FIFO
sahilmgandhi 18:6a4db94011d3 188 */
sahilmgandhi 18:6a4db94011d3 189 void SCUART_Write(SC_T* sc,uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
sahilmgandhi 18:6a4db94011d3 190 {
sahilmgandhi 18:6a4db94011d3 191 uint32_t u32Count;
sahilmgandhi 18:6a4db94011d3 192
sahilmgandhi 18:6a4db94011d3 193 for(u32Count = 0; u32Count != u32WriteBytes; u32Count++) {
sahilmgandhi 18:6a4db94011d3 194 while(SCUART_GET_TX_FULL(sc)); // Wait 'til FIFO not full
sahilmgandhi 18:6a4db94011d3 195 sc->DAT = pu8TxBuf[u32Count]; // Write 1 byte to FIFO
sahilmgandhi 18:6a4db94011d3 196 }
sahilmgandhi 18:6a4db94011d3 197 }
sahilmgandhi 18:6a4db94011d3 198
sahilmgandhi 18:6a4db94011d3 199
sahilmgandhi 18:6a4db94011d3 200 /*@}*/ /* end of group NUC472_442_SCUART_EXPORTED_FUNCTIONS */
sahilmgandhi 18:6a4db94011d3 201
sahilmgandhi 18:6a4db94011d3 202 /*@}*/ /* end of group NUC472_442_SCUART_Driver */
sahilmgandhi 18:6a4db94011d3 203
sahilmgandhi 18:6a4db94011d3 204 /*@}*/ /* end of group NUC472_442_Device_Driver */
sahilmgandhi 18:6a4db94011d3 205
sahilmgandhi 18:6a4db94011d3 206 /*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/