MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NUVOTON/TARGET_M451/device/StdDriver/m451_scuart.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /**************************************************************************//**
sahilmgandhi 18:6a4db94011d3 2 * @file scuart.c
sahilmgandhi 18:6a4db94011d3 3 * @version V3.00
sahilmgandhi 18:6a4db94011d3 4 * $Revision: 8 $
sahilmgandhi 18:6a4db94011d3 5 * $Date: 15/08/11 10:26a $
sahilmgandhi 18:6a4db94011d3 6 * @brief M451 series Smartcard UART mode (SCUART) 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 #include "M451Series.h"
sahilmgandhi 18:6a4db94011d3 12
sahilmgandhi 18:6a4db94011d3 13 /** @addtogroup Standard_Driver Standard Driver
sahilmgandhi 18:6a4db94011d3 14 @{
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16
sahilmgandhi 18:6a4db94011d3 17 /** @addtogroup 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 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 Disable smartcard uart interface.
sahilmgandhi 18:6a4db94011d3 28 * @param sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 29 * @return None
sahilmgandhi 18:6a4db94011d3 30 * @details The function is used to disable smartcard interface UART mode.
sahilmgandhi 18:6a4db94011d3 31 */
sahilmgandhi 18:6a4db94011d3 32 void SCUART_Close(SC_T* sc)
sahilmgandhi 18:6a4db94011d3 33 {
sahilmgandhi 18:6a4db94011d3 34 sc->INTEN = 0;
sahilmgandhi 18:6a4db94011d3 35 sc->UARTCTL = 0;
sahilmgandhi 18:6a4db94011d3 36 sc->CTL = 0;
sahilmgandhi 18:6a4db94011d3 37
sahilmgandhi 18:6a4db94011d3 38 }
sahilmgandhi 18:6a4db94011d3 39
sahilmgandhi 18:6a4db94011d3 40 /// @cond HIDDEN_SYMBOLS
sahilmgandhi 18:6a4db94011d3 41 /**
sahilmgandhi 18:6a4db94011d3 42 * @brief This function returns module clock of specified SC interface
sahilmgandhi 18:6a4db94011d3 43 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 44 * @return Module clock of specified SC interface
sahilmgandhi 18:6a4db94011d3 45 */
sahilmgandhi 18:6a4db94011d3 46 static uint32_t SCUART_GetClock(SC_T *sc)
sahilmgandhi 18:6a4db94011d3 47 {
sahilmgandhi 18:6a4db94011d3 48 uint32_t u32ClkSrc, u32Num, u32Clk;
sahilmgandhi 18:6a4db94011d3 49
sahilmgandhi 18:6a4db94011d3 50 if(sc == SC0)
sahilmgandhi 18:6a4db94011d3 51 u32Num = 0;
sahilmgandhi 18:6a4db94011d3 52 #if 0 /* M451 series has only one SC interface */
sahilmgandhi 18:6a4db94011d3 53 else if(sc == SC1)
sahilmgandhi 18:6a4db94011d3 54 u32Num = 1;
sahilmgandhi 18:6a4db94011d3 55 else if(sc == SC2)
sahilmgandhi 18:6a4db94011d3 56 u32Num = 2;
sahilmgandhi 18:6a4db94011d3 57 else if(sc == SC3)
sahilmgandhi 18:6a4db94011d3 58 u32Num = 3;
sahilmgandhi 18:6a4db94011d3 59 else if(sc == SC4)
sahilmgandhi 18:6a4db94011d3 60 u32Num = 4;
sahilmgandhi 18:6a4db94011d3 61 else if(sc == SC5)
sahilmgandhi 18:6a4db94011d3 62 u32Intf = 5;
sahilmgandhi 18:6a4db94011d3 63 #endif
sahilmgandhi 18:6a4db94011d3 64 else
sahilmgandhi 18:6a4db94011d3 65 return FALSE;
sahilmgandhi 18:6a4db94011d3 66
sahilmgandhi 18:6a4db94011d3 67 u32ClkSrc = (CLK->CLKSEL3 >> (2 * u32Num)) & CLK_CLKSEL3_SC0SEL_Msk;
sahilmgandhi 18:6a4db94011d3 68
sahilmgandhi 18:6a4db94011d3 69 // Get smartcard module clock
sahilmgandhi 18:6a4db94011d3 70 if(u32ClkSrc == 0)
sahilmgandhi 18:6a4db94011d3 71 u32Clk = __HXT;
sahilmgandhi 18:6a4db94011d3 72 else if(u32ClkSrc == 1)
sahilmgandhi 18:6a4db94011d3 73 u32Clk = CLK_GetPLLClockFreq();
sahilmgandhi 18:6a4db94011d3 74 else if(u32ClkSrc == 2) {
sahilmgandhi 18:6a4db94011d3 75 SystemCoreClockUpdate();
sahilmgandhi 18:6a4db94011d3 76 if(CLK->CLKSEL0 & CLK_CLKSEL0_PCLK0SEL_Msk)
sahilmgandhi 18:6a4db94011d3 77 u32Clk = SystemCoreClock / 2;
sahilmgandhi 18:6a4db94011d3 78 else
sahilmgandhi 18:6a4db94011d3 79 u32Clk = SystemCoreClock;
sahilmgandhi 18:6a4db94011d3 80 } else
sahilmgandhi 18:6a4db94011d3 81 u32Clk = __HIRC;
sahilmgandhi 18:6a4db94011d3 82
sahilmgandhi 18:6a4db94011d3 83 #if 0 /* M451 series has only one SC interface */
sahilmgandhi 18:6a4db94011d3 84 if(u32Num < 4) {
sahilmgandhi 18:6a4db94011d3 85 u32Clk /= (((CLK->CLKDIV1 >> (8 * u32Num)) & CLK_CLKDIV1_SC0DIV_Msk) + 1);
sahilmgandhi 18:6a4db94011d3 86 } else {
sahilmgandhi 18:6a4db94011d3 87 u32Clk /= (((CLK->CLKDIV2 >> (8 * (u32Num - 4))) & CLK_CLKDIV2_SC4DIV_Msk) + 1);
sahilmgandhi 18:6a4db94011d3 88 }
sahilmgandhi 18:6a4db94011d3 89 #else
sahilmgandhi 18:6a4db94011d3 90 u32Clk /= (((CLK->CLKDIV1 >> (8 * u32Num)) & CLK_CLKDIV1_SC0DIV_Msk) + 1);
sahilmgandhi 18:6a4db94011d3 91 #endif
sahilmgandhi 18:6a4db94011d3 92
sahilmgandhi 18:6a4db94011d3 93 return u32Clk;
sahilmgandhi 18:6a4db94011d3 94 }
sahilmgandhi 18:6a4db94011d3 95 /// @endcond HIDDEN_SYMBOLS
sahilmgandhi 18:6a4db94011d3 96
sahilmgandhi 18:6a4db94011d3 97 /**
sahilmgandhi 18:6a4db94011d3 98 * @brief Enable smartcard uart interface.
sahilmgandhi 18:6a4db94011d3 99 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 100 * @param[in] u32baudrate Target baudrate of smartcard module.
sahilmgandhi 18:6a4db94011d3 101 * @return Actual baudrate of smartcard mode.
sahilmgandhi 18:6a4db94011d3 102 * @details This function use to enable smartcard module UART mode and set baudrate.
sahilmgandhi 18:6a4db94011d3 103 * @note This function configures character width to 8 bits, 1 stop bit, and no parity.
sahilmgandhi 18:6a4db94011d3 104 * And can use \ref SCUART_SetLineConfig function to update these settings.
sahilmgandhi 18:6a4db94011d3 105 */
sahilmgandhi 18:6a4db94011d3 106 uint32_t SCUART_Open(SC_T* sc, uint32_t u32baudrate)
sahilmgandhi 18:6a4db94011d3 107 {
sahilmgandhi 18:6a4db94011d3 108 uint32_t u32Clk = SCUART_GetClock(sc), u32Div;
sahilmgandhi 18:6a4db94011d3 109
sahilmgandhi 18:6a4db94011d3 110 // Calculate divider for target baudrate
sahilmgandhi 18:6a4db94011d3 111 u32Div = (u32Clk + (u32baudrate >> 1) - 1) / u32baudrate - 1;
sahilmgandhi 18:6a4db94011d3 112
sahilmgandhi 18:6a4db94011d3 113 sc->CTL = SC_CTL_SCEN_Msk | SC_CTL_NSB_Msk; // Enable smartcard interface and stop bit = 1
sahilmgandhi 18:6a4db94011d3 114 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 115 sc->ETUCTL = u32Div;
sahilmgandhi 18:6a4db94011d3 116
sahilmgandhi 18:6a4db94011d3 117 return(u32Clk / (u32Div+1));
sahilmgandhi 18:6a4db94011d3 118 }
sahilmgandhi 18:6a4db94011d3 119
sahilmgandhi 18:6a4db94011d3 120 /**
sahilmgandhi 18:6a4db94011d3 121 * @brief Read data from smartcard UART interface.
sahilmgandhi 18:6a4db94011d3 122 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 123 * @param[in] pu8RxBuf The buffer to store receive the data.
sahilmgandhi 18:6a4db94011d3 124 * @param[in] u32ReadBytes Target number of characters to receive.
sahilmgandhi 18:6a4db94011d3 125 * @return Actual character number reads to buffer.
sahilmgandhi 18:6a4db94011d3 126 * @details The function is used to read Rx data from RX FIFO.
sahilmgandhi 18:6a4db94011d3 127 * @note This function does not block and return immediately if there's no data available.
sahilmgandhi 18:6a4db94011d3 128 */
sahilmgandhi 18:6a4db94011d3 129 uint32_t SCUART_Read(SC_T* sc, uint8_t *pu8RxBuf, uint32_t u32ReadBytes)
sahilmgandhi 18:6a4db94011d3 130 {
sahilmgandhi 18:6a4db94011d3 131 uint32_t u32Count;
sahilmgandhi 18:6a4db94011d3 132
sahilmgandhi 18:6a4db94011d3 133 for(u32Count = 0; u32Count < u32ReadBytes; u32Count++) {
sahilmgandhi 18:6a4db94011d3 134 if(SCUART_GET_RX_EMPTY(sc)) { // no data available
sahilmgandhi 18:6a4db94011d3 135 break;
sahilmgandhi 18:6a4db94011d3 136 }
sahilmgandhi 18:6a4db94011d3 137 pu8RxBuf[u32Count] = SCUART_READ(sc); // get data from FIFO
sahilmgandhi 18:6a4db94011d3 138 }
sahilmgandhi 18:6a4db94011d3 139
sahilmgandhi 18:6a4db94011d3 140 return u32Count;
sahilmgandhi 18:6a4db94011d3 141 }
sahilmgandhi 18:6a4db94011d3 142
sahilmgandhi 18:6a4db94011d3 143 /**
sahilmgandhi 18:6a4db94011d3 144 * @brief This function use to config smartcard UART mode line setting.
sahilmgandhi 18:6a4db94011d3 145 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 146 * @param[in] u32Baudrate Target baudrate of smartcard module. If this value is 0, UART baudrate will not change.
sahilmgandhi 18:6a4db94011d3 147 * @param[in] u32DataWidth The data length, could be:
sahilmgandhi 18:6a4db94011d3 148 * - \ref SCUART_CHAR_LEN_5
sahilmgandhi 18:6a4db94011d3 149 * - \ref SCUART_CHAR_LEN_6
sahilmgandhi 18:6a4db94011d3 150 * - \ref SCUART_CHAR_LEN_7
sahilmgandhi 18:6a4db94011d3 151 * - \ref SCUART_CHAR_LEN_8
sahilmgandhi 18:6a4db94011d3 152 * @param[in] u32Parity The parity setting, could be:
sahilmgandhi 18:6a4db94011d3 153 * - \ref SCUART_PARITY_NONE
sahilmgandhi 18:6a4db94011d3 154 * - \ref SCUART_PARITY_ODD
sahilmgandhi 18:6a4db94011d3 155 * - \ref SCUART_PARITY_EVEN
sahilmgandhi 18:6a4db94011d3 156 * @param[in] u32StopBits The stop bit length, could be:
sahilmgandhi 18:6a4db94011d3 157 * - \ref SCUART_STOP_BIT_1
sahilmgandhi 18:6a4db94011d3 158 * - \ref SCUART_STOP_BIT_2
sahilmgandhi 18:6a4db94011d3 159 * @return Actual baudrate of smartcard.
sahilmgandhi 18:6a4db94011d3 160 * @details Smartcard UART mode is operated in LIN data frame.
sahilmgandhi 18:6a4db94011d3 161 */
sahilmgandhi 18:6a4db94011d3 162 uint32_t SCUART_SetLineConfig(SC_T* sc, uint32_t u32Baudrate, uint32_t u32DataWidth, uint32_t u32Parity, uint32_t u32StopBits)
sahilmgandhi 18:6a4db94011d3 163 {
sahilmgandhi 18:6a4db94011d3 164
sahilmgandhi 18:6a4db94011d3 165 uint32_t u32Clk = SCUART_GetClock(sc), u32Div;
sahilmgandhi 18:6a4db94011d3 166
sahilmgandhi 18:6a4db94011d3 167 if(u32Baudrate == 0) { // keep original baudrate setting
sahilmgandhi 18:6a4db94011d3 168 u32Div = sc->ETUCTL & SC_ETUCTL_ETURDIV_Msk;
sahilmgandhi 18:6a4db94011d3 169 } else {
sahilmgandhi 18:6a4db94011d3 170 // Calculate divider for target baudrate
sahilmgandhi 18:6a4db94011d3 171 u32Div = (u32Clk + (u32Baudrate >> 1) - 1) / u32Baudrate - 1;
sahilmgandhi 18:6a4db94011d3 172 sc->ETUCTL = u32Div;
sahilmgandhi 18:6a4db94011d3 173 }
sahilmgandhi 18:6a4db94011d3 174
sahilmgandhi 18:6a4db94011d3 175 sc->CTL = u32StopBits | SC_CTL_SCEN_Msk; // Set stop bit
sahilmgandhi 18:6a4db94011d3 176 sc->UARTCTL = u32Parity | u32DataWidth | SC_UARTCTL_UARTEN_Msk; // Set character width and parity
sahilmgandhi 18:6a4db94011d3 177
sahilmgandhi 18:6a4db94011d3 178 return(u32Clk / (u32Div+1));
sahilmgandhi 18:6a4db94011d3 179 }
sahilmgandhi 18:6a4db94011d3 180
sahilmgandhi 18:6a4db94011d3 181 /**
sahilmgandhi 18:6a4db94011d3 182 * @brief This function use to set receive timeout count.
sahilmgandhi 18:6a4db94011d3 183 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 184 * @param[in] u32TOC Rx timeout counter, using baudrate as counter unit. Valid range are 0~0x1FF,
sahilmgandhi 18:6a4db94011d3 185 * set this value to 0 will disable timeout counter.
sahilmgandhi 18:6a4db94011d3 186 * @return None
sahilmgandhi 18:6a4db94011d3 187 * @details The time-out counter resets and starts counting whenever the RX buffer received a
sahilmgandhi 18:6a4db94011d3 188 * new data word. Once the counter decrease to 1 and no new data is received or CPU
sahilmgandhi 18:6a4db94011d3 189 * does not read any data from FIFO, a receiver time-out interrupt will be generated.
sahilmgandhi 18:6a4db94011d3 190 */
sahilmgandhi 18:6a4db94011d3 191 void SCUART_SetTimeoutCnt(SC_T* sc, uint32_t u32TOC)
sahilmgandhi 18:6a4db94011d3 192 {
sahilmgandhi 18:6a4db94011d3 193 sc->RXTOUT = u32TOC;
sahilmgandhi 18:6a4db94011d3 194 }
sahilmgandhi 18:6a4db94011d3 195
sahilmgandhi 18:6a4db94011d3 196
sahilmgandhi 18:6a4db94011d3 197 /**
sahilmgandhi 18:6a4db94011d3 198 * @brief Write data to smartcard UART interface.
sahilmgandhi 18:6a4db94011d3 199 * @param[in] sc The pointer of smartcard module.
sahilmgandhi 18:6a4db94011d3 200 * @param[in] pu8TxBuf The buffer containing data to send to transmit FIFO.
sahilmgandhi 18:6a4db94011d3 201 * @param[in] u32WriteBytes Number of data to send.
sahilmgandhi 18:6a4db94011d3 202 * @return None
sahilmgandhi 18:6a4db94011d3 203 * @details This function is to write data into transmit FIFO to send data out.
sahilmgandhi 18:6a4db94011d3 204 * @note This function blocks until all data write into FIFO.
sahilmgandhi 18:6a4db94011d3 205 */
sahilmgandhi 18:6a4db94011d3 206 void SCUART_Write(SC_T* sc, uint8_t *pu8TxBuf, uint32_t u32WriteBytes)
sahilmgandhi 18:6a4db94011d3 207 {
sahilmgandhi 18:6a4db94011d3 208 uint32_t u32Count;
sahilmgandhi 18:6a4db94011d3 209
sahilmgandhi 18:6a4db94011d3 210 for(u32Count = 0; u32Count != u32WriteBytes; u32Count++) {
sahilmgandhi 18:6a4db94011d3 211 while(SCUART_GET_TX_FULL(sc)); // Wait 'til FIFO not full
sahilmgandhi 18:6a4db94011d3 212 sc->DAT = pu8TxBuf[u32Count]; // Write 1 byte to FIFO
sahilmgandhi 18:6a4db94011d3 213 }
sahilmgandhi 18:6a4db94011d3 214 }
sahilmgandhi 18:6a4db94011d3 215
sahilmgandhi 18:6a4db94011d3 216
sahilmgandhi 18:6a4db94011d3 217 /*@}*/ /* end of group SCUART_EXPORTED_FUNCTIONS */
sahilmgandhi 18:6a4db94011d3 218
sahilmgandhi 18:6a4db94011d3 219 /*@}*/ /* end of group SCUART_Driver */
sahilmgandhi 18:6a4db94011d3 220
sahilmgandhi 18:6a4db94011d3 221 /*@}*/ /* end of group Standard_Driver */
sahilmgandhi 18:6a4db94011d3 222
sahilmgandhi 18:6a4db94011d3 223 /*** (C) COPYRIGHT 2013~2015 Nuvoton Technology Corp. ***/