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TARGET_MAX32625NEXPAQ/TOOLCHAIN_ARM_STD/i2cm.h@171:3a7713b1edbc, 2018-11-08 (annotated)
- Committer:
- AnnaBridge
- Date:
- Thu Nov 08 11:45:42 2018 +0000
- Revision:
- 171:3a7713b1edbc
- Parent:
- TARGET_MAX32625PICO_NO_BOOT/TARGET_Maxim/TARGET_MAX32625/mxc/i2cm.h@169:a7c7b631e539
mbed library. Release version 164
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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Anna Bridge |
169:a7c7b631e539 | 1 | /******************************************************************************* |
Anna Bridge |
169:a7c7b631e539 | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
Anna Bridge |
169:a7c7b631e539 | 3 | * |
Anna Bridge |
169:a7c7b631e539 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
Anna Bridge |
169:a7c7b631e539 | 5 | * copy of this software and associated documentation files (the "Software"), |
Anna Bridge |
169:a7c7b631e539 | 6 | * to deal in the Software without restriction, including without limitation |
Anna Bridge |
169:a7c7b631e539 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
Anna Bridge |
169:a7c7b631e539 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
Anna Bridge |
169:a7c7b631e539 | 9 | * Software is furnished to do so, subject to the following conditions: |
Anna Bridge |
169:a7c7b631e539 | 10 | * |
Anna Bridge |
169:a7c7b631e539 | 11 | * The above copyright notice and this permission notice shall be included |
Anna Bridge |
169:a7c7b631e539 | 12 | * in all copies or substantial portions of the Software. |
Anna Bridge |
169:a7c7b631e539 | 13 | * |
Anna Bridge |
169:a7c7b631e539 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
Anna Bridge |
169:a7c7b631e539 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
Anna Bridge |
169:a7c7b631e539 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
Anna Bridge |
169:a7c7b631e539 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
Anna Bridge |
169:a7c7b631e539 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
Anna Bridge |
169:a7c7b631e539 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
Anna Bridge |
169:a7c7b631e539 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
Anna Bridge |
169:a7c7b631e539 | 21 | * |
Anna Bridge |
169:a7c7b631e539 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
Anna Bridge |
169:a7c7b631e539 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
Anna Bridge |
169:a7c7b631e539 | 24 | * Products, Inc. Branding Policy. |
Anna Bridge |
169:a7c7b631e539 | 25 | * |
Anna Bridge |
169:a7c7b631e539 | 26 | * The mere transfer of this software does not imply any licenses |
Anna Bridge |
169:a7c7b631e539 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
Anna Bridge |
169:a7c7b631e539 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
Anna Bridge |
169:a7c7b631e539 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
Anna Bridge |
169:a7c7b631e539 | 30 | * ownership rights. |
Anna Bridge |
169:a7c7b631e539 | 31 | * |
Anna Bridge |
169:a7c7b631e539 | 32 | * $Date: 2016-04-27 11:55:43 -0500 (Wed, 27 Apr 2016) $ |
Anna Bridge |
169:a7c7b631e539 | 33 | * $Revision: 22541 $ |
Anna Bridge |
169:a7c7b631e539 | 34 | * |
Anna Bridge |
169:a7c7b631e539 | 35 | ******************************************************************************/ |
Anna Bridge |
169:a7c7b631e539 | 36 | |
Anna Bridge |
169:a7c7b631e539 | 37 | /** |
Anna Bridge |
169:a7c7b631e539 | 38 | * @file i2cm.h |
Anna Bridge |
169:a7c7b631e539 | 39 | * @brief I2C Master driver header file. |
Anna Bridge |
169:a7c7b631e539 | 40 | */ |
Anna Bridge |
169:a7c7b631e539 | 41 | |
Anna Bridge |
169:a7c7b631e539 | 42 | #ifndef _I2CM_H_ |
Anna Bridge |
169:a7c7b631e539 | 43 | #define _I2CM_H_ |
Anna Bridge |
169:a7c7b631e539 | 44 | |
Anna Bridge |
169:a7c7b631e539 | 45 | /***** Includes *****/ |
Anna Bridge |
169:a7c7b631e539 | 46 | #include "mxc_config.h" |
Anna Bridge |
169:a7c7b631e539 | 47 | #include "mxc_sys.h" |
Anna Bridge |
169:a7c7b631e539 | 48 | #include "i2cm_regs.h" |
Anna Bridge |
169:a7c7b631e539 | 49 | |
Anna Bridge |
169:a7c7b631e539 | 50 | #ifdef __cplusplus |
Anna Bridge |
169:a7c7b631e539 | 51 | extern "C" { |
Anna Bridge |
169:a7c7b631e539 | 52 | #endif |
Anna Bridge |
169:a7c7b631e539 | 53 | |
Anna Bridge |
169:a7c7b631e539 | 54 | /***** Definitions *****/ |
Anna Bridge |
169:a7c7b631e539 | 55 | |
Anna Bridge |
169:a7c7b631e539 | 56 | /// @brief I2CM frequencies. |
Anna Bridge |
169:a7c7b631e539 | 57 | typedef enum { |
Anna Bridge |
169:a7c7b631e539 | 58 | I2CM_SPEED_100KHZ = 100000, |
Anna Bridge |
169:a7c7b631e539 | 59 | I2CM_SPEED_400KHZ = 400000 |
Anna Bridge |
169:a7c7b631e539 | 60 | } i2cm_speed_t; |
Anna Bridge |
169:a7c7b631e539 | 61 | |
Anna Bridge |
169:a7c7b631e539 | 62 | /// @brief I2CM Transaction request. |
Anna Bridge |
169:a7c7b631e539 | 63 | typedef struct i2cm_req i2cm_req_t; |
Anna Bridge |
169:a7c7b631e539 | 64 | struct i2cm_req { |
Anna Bridge |
169:a7c7b631e539 | 65 | |
Anna Bridge |
169:a7c7b631e539 | 66 | /** |
Anna Bridge |
169:a7c7b631e539 | 67 | * @details Only supports 7-bit addressing. Driver will shift the address and |
Anna Bridge |
169:a7c7b631e539 | 68 | * add the read bit when necessary. |
Anna Bridge |
169:a7c7b631e539 | 69 | */ |
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169:a7c7b631e539 | 70 | uint8_t addr; |
Anna Bridge |
169:a7c7b631e539 | 71 | const uint8_t *cmd_data; ///< Optional command data to write before reading. |
Anna Bridge |
169:a7c7b631e539 | 72 | uint32_t cmd_len; ///< Number of bytes in command. |
Anna Bridge |
169:a7c7b631e539 | 73 | uint8_t *data; ///< Data to write or read. |
Anna Bridge |
169:a7c7b631e539 | 74 | uint32_t data_len; ///< Length of data. |
Anna Bridge |
169:a7c7b631e539 | 75 | uint32_t cmd_num; ///< Number of command bytes sent |
Anna Bridge |
169:a7c7b631e539 | 76 | uint32_t data_num; ///< Number of data bytes sent |
Anna Bridge |
169:a7c7b631e539 | 77 | |
Anna Bridge |
169:a7c7b631e539 | 78 | /** |
Anna Bridge |
169:a7c7b631e539 | 79 | * @brief Callback for asynchronous request. |
Anna Bridge |
169:a7c7b631e539 | 80 | * @param i2cm_req_t* Pointer to the transaction request. |
Anna Bridge |
169:a7c7b631e539 | 81 | * @param int Error code. |
Anna Bridge |
169:a7c7b631e539 | 82 | */ |
Anna Bridge |
169:a7c7b631e539 | 83 | void (*callback)(i2cm_req_t*, int); |
Anna Bridge |
169:a7c7b631e539 | 84 | }; |
Anna Bridge |
169:a7c7b631e539 | 85 | |
Anna Bridge |
169:a7c7b631e539 | 86 | /***** Globals *****/ |
Anna Bridge |
169:a7c7b631e539 | 87 | |
Anna Bridge |
169:a7c7b631e539 | 88 | /***** Function Prototypes *****/ |
Anna Bridge |
169:a7c7b631e539 | 89 | |
Anna Bridge |
169:a7c7b631e539 | 90 | /** |
Anna Bridge |
169:a7c7b631e539 | 91 | * @brief Initialize I2CM module. |
Anna Bridge |
169:a7c7b631e539 | 92 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 93 | * @param cfg Pointer to I2CM configuration. |
Anna Bridge |
169:a7c7b631e539 | 94 | * @param speed I2CM frequency. |
Anna Bridge |
169:a7c7b631e539 | 95 | * @returns #E_NO_ERROR if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 96 | */ |
Anna Bridge |
169:a7c7b631e539 | 97 | int I2CM_Init(mxc_i2cm_regs_t *i2cm, const sys_cfg_i2cm_t *sys_cfg, i2cm_speed_t speed); |
Anna Bridge |
169:a7c7b631e539 | 98 | |
Anna Bridge |
169:a7c7b631e539 | 99 | /** |
Anna Bridge |
169:a7c7b631e539 | 100 | * @brief Shutdown I2CM module. |
Anna Bridge |
169:a7c7b631e539 | 101 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 102 | * @returns #E_NO_ERROR if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 103 | */ |
Anna Bridge |
169:a7c7b631e539 | 104 | int I2CM_Shutdown(mxc_i2cm_regs_t *i2cm); |
Anna Bridge |
169:a7c7b631e539 | 105 | |
Anna Bridge |
169:a7c7b631e539 | 106 | /** |
Anna Bridge |
169:a7c7b631e539 | 107 | * @brief Read I2CM data. Will block until transaction is complete. |
Anna Bridge |
169:a7c7b631e539 | 108 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 109 | * @param addr I2C address of the slave. |
Anna Bridge |
169:a7c7b631e539 | 110 | * @param cmd_data Data to write before reading. |
Anna Bridge |
169:a7c7b631e539 | 111 | * @param cmd_len Number of bytes to write before reading. |
Anna Bridge |
169:a7c7b631e539 | 112 | * @param data Where to store read data. |
Anna Bridge |
169:a7c7b631e539 | 113 | * @param len Number of bytes to read. |
Anna Bridge |
169:a7c7b631e539 | 114 | * @details Command is an optional feature where the master will write the cmd_data |
Anna Bridge |
169:a7c7b631e539 | 115 | * before reading from the slave. If command is undesired, leave the pointer |
Anna Bridge |
169:a7c7b631e539 | 116 | * NULL and cmd_len 0. If there is a command, the master will send a |
Anna Bridge |
169:a7c7b631e539 | 117 | repeated start before reading. Will block until transaction has completed. |
Anna Bridge |
169:a7c7b631e539 | 118 | * @returns Bytes transacted if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 119 | */ |
Anna Bridge |
169:a7c7b631e539 | 120 | int I2CM_Read(mxc_i2cm_regs_t *i2cm, uint8_t addr, const uint8_t *cmd_data, |
Anna Bridge |
169:a7c7b631e539 | 121 | uint32_t cmd_len, uint8_t* data, uint32_t len); |
Anna Bridge |
169:a7c7b631e539 | 122 | |
Anna Bridge |
169:a7c7b631e539 | 123 | /** |
Anna Bridge |
169:a7c7b631e539 | 124 | * @brief Write I2CM data. Will block until transaction is complete. |
Anna Bridge |
169:a7c7b631e539 | 125 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 126 | * @param addr I2C address of the slave. |
Anna Bridge |
169:a7c7b631e539 | 127 | * @param cmd_data Data to write before writing data. |
Anna Bridge |
169:a7c7b631e539 | 128 | * @param cmd_len Number of bytes to write before writing data. |
Anna Bridge |
169:a7c7b631e539 | 129 | * @param data Data to be written. |
Anna Bridge |
169:a7c7b631e539 | 130 | * @param len Number of bytes to Write. |
Anna Bridge |
169:a7c7b631e539 | 131 | * @details Command is an optional feature where the master will write the cmd_data |
Anna Bridge |
169:a7c7b631e539 | 132 | * before writing to the slave. If command is undesired, leave the pointer |
Anna Bridge |
169:a7c7b631e539 | 133 | * NULL and cmd_len 0. If there is a command, the master will send a |
Anna Bridge |
169:a7c7b631e539 | 134 | repeated start before writing again. Will block until transaction has completed. |
Anna Bridge |
169:a7c7b631e539 | 135 | * @returns Bytes transacted if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 136 | */ |
Anna Bridge |
169:a7c7b631e539 | 137 | int I2CM_Write(mxc_i2cm_regs_t *i2cm, uint8_t addr, const uint8_t *cmd_data, |
Anna Bridge |
169:a7c7b631e539 | 138 | uint32_t cmd_len, uint8_t* data, uint32_t len); |
Anna Bridge |
169:a7c7b631e539 | 139 | |
Anna Bridge |
169:a7c7b631e539 | 140 | /** |
Anna Bridge |
169:a7c7b631e539 | 141 | * @brief Asynchronously read I2CM data. |
Anna Bridge |
169:a7c7b631e539 | 142 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 143 | * @param req Request for an I2CM transaction. |
Anna Bridge |
169:a7c7b631e539 | 144 | * @returns #E_NO_ERROR if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 145 | */ |
Anna Bridge |
169:a7c7b631e539 | 146 | int I2CM_ReadAsync(mxc_i2cm_regs_t *i2cm, i2cm_req_t *req); |
Anna Bridge |
169:a7c7b631e539 | 147 | |
Anna Bridge |
169:a7c7b631e539 | 148 | /** |
Anna Bridge |
169:a7c7b631e539 | 149 | * @brief Asynchronously write I2CM data. |
Anna Bridge |
169:a7c7b631e539 | 150 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 151 | * @param req Request for an I2CM transaction. |
Anna Bridge |
169:a7c7b631e539 | 152 | * @returns #E_NO_ERROR if everything is successful, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 153 | */ |
Anna Bridge |
169:a7c7b631e539 | 154 | int I2CM_WriteAsync(mxc_i2cm_regs_t *i2cm, i2cm_req_t *req); |
Anna Bridge |
169:a7c7b631e539 | 155 | |
Anna Bridge |
169:a7c7b631e539 | 156 | /** |
Anna Bridge |
169:a7c7b631e539 | 157 | * @brief Abort asynchronous request. |
Anna Bridge |
169:a7c7b631e539 | 158 | * @param req Pointer to request for a I2CM transaction. |
Anna Bridge |
169:a7c7b631e539 | 159 | * @note Will call the callback for the request. |
Anna Bridge |
169:a7c7b631e539 | 160 | * @returns #E_NO_ERROR if request aborted, error if unsuccessful. |
Anna Bridge |
169:a7c7b631e539 | 161 | */ |
Anna Bridge |
169:a7c7b631e539 | 162 | int I2CM_AbortAsync(i2cm_req_t *req); |
Anna Bridge |
169:a7c7b631e539 | 163 | |
Anna Bridge |
169:a7c7b631e539 | 164 | /** |
Anna Bridge |
169:a7c7b631e539 | 165 | * @brief I2CM interrupt handler. |
Anna Bridge |
169:a7c7b631e539 | 166 | * @details This function should be called by the application from the interrupt |
Anna Bridge |
169:a7c7b631e539 | 167 | * handler if I2CM interrupts are enabled. Alternately, this function |
Anna Bridge |
169:a7c7b631e539 | 168 | * can be periodically called by the application if I2CM interrupts are |
Anna Bridge |
169:a7c7b631e539 | 169 | * disabled. |
Anna Bridge |
169:a7c7b631e539 | 170 | * @param i2cm Base address of the I2CM module. |
Anna Bridge |
169:a7c7b631e539 | 171 | */ |
Anna Bridge |
169:a7c7b631e539 | 172 | void I2CM_Handler(mxc_i2cm_regs_t *i2cm); |
Anna Bridge |
169:a7c7b631e539 | 173 | |
Anna Bridge |
169:a7c7b631e539 | 174 | /** |
Anna Bridge |
169:a7c7b631e539 | 175 | * @brief Checks to see if the I2CM is busy. |
Anna Bridge |
169:a7c7b631e539 | 176 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 177 | * @returns #E_NO_ERROR if idle, #E_BUSY if in use. |
Anna Bridge |
169:a7c7b631e539 | 178 | */ |
Anna Bridge |
169:a7c7b631e539 | 179 | int I2CM_Busy(mxc_i2cm_regs_t *i2cm); |
Anna Bridge |
169:a7c7b631e539 | 180 | |
Anna Bridge |
169:a7c7b631e539 | 181 | /** |
Anna Bridge |
169:a7c7b631e539 | 182 | * @brief Attempt to prepare the I2CM for sleep. |
Anna Bridge |
169:a7c7b631e539 | 183 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 184 | * @details Checks for any ongoing transactions. Disables interrupts if the I2CM |
Anna Bridge |
169:a7c7b631e539 | 185 | is idle. |
Anna Bridge |
169:a7c7b631e539 | 186 | * @returns #E_NO_ERROR if ready to sleep, #E_BUSY if not ready for sleep. |
Anna Bridge |
169:a7c7b631e539 | 187 | */ |
Anna Bridge |
169:a7c7b631e539 | 188 | int I2CM_PrepForSleep(mxc_i2cm_regs_t *i2cm); |
Anna Bridge |
169:a7c7b631e539 | 189 | |
Anna Bridge |
169:a7c7b631e539 | 190 | /** |
Anna Bridge |
169:a7c7b631e539 | 191 | * @brief Check the I2C bus. |
Anna Bridge |
169:a7c7b631e539 | 192 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 193 | * @details Checks the I2CM bus to determine if there is any other master using |
Anna Bridge |
169:a7c7b631e539 | 194 | * the bus. |
Anna Bridge |
169:a7c7b631e539 | 195 | * @returns #E_NO_ERROR if SCL and SDA are high, #E_BUSY otherwise. |
Anna Bridge |
169:a7c7b631e539 | 196 | */ |
Anna Bridge |
169:a7c7b631e539 | 197 | int I2CM_BusCheck(mxc_i2cm_regs_t *i2cm); |
Anna Bridge |
169:a7c7b631e539 | 198 | |
Anna Bridge |
169:a7c7b631e539 | 199 | /** |
Anna Bridge |
169:a7c7b631e539 | 200 | * @brief Drain all of the data in the RXFIFO. |
Anna Bridge |
169:a7c7b631e539 | 201 | * @param i2cm Pointer to UART regs. |
Anna Bridge |
169:a7c7b631e539 | 202 | */ |
Anna Bridge |
169:a7c7b631e539 | 203 | __STATIC_INLINE void I2CM_DrainRX(mxc_i2cm_regs_t *i2cm) |
Anna Bridge |
169:a7c7b631e539 | 204 | { |
Anna Bridge |
169:a7c7b631e539 | 205 | i2cm->ctrl &= ~(MXC_F_I2CM_CTRL_RX_FIFO_EN); |
Anna Bridge |
169:a7c7b631e539 | 206 | i2cm->ctrl |= MXC_F_I2CM_CTRL_RX_FIFO_EN; |
Anna Bridge |
169:a7c7b631e539 | 207 | } |
Anna Bridge |
169:a7c7b631e539 | 208 | |
Anna Bridge |
169:a7c7b631e539 | 209 | /** |
Anna Bridge |
169:a7c7b631e539 | 210 | * @brief Drain all of the data in the TXFIFO. |
Anna Bridge |
169:a7c7b631e539 | 211 | * @param i2cm Pointer to UART regs. |
Anna Bridge |
169:a7c7b631e539 | 212 | */ |
Anna Bridge |
169:a7c7b631e539 | 213 | __STATIC_INLINE void I2CM_DrainTX(mxc_i2cm_regs_t *i2cm) |
Anna Bridge |
169:a7c7b631e539 | 214 | { |
Anna Bridge |
169:a7c7b631e539 | 215 | i2cm->ctrl &= ~(MXC_F_I2CM_CTRL_TX_FIFO_EN); |
Anna Bridge |
169:a7c7b631e539 | 216 | i2cm->ctrl |= MXC_F_I2CM_CTRL_TX_FIFO_EN; |
Anna Bridge |
169:a7c7b631e539 | 217 | } |
Anna Bridge |
169:a7c7b631e539 | 218 | |
Anna Bridge |
169:a7c7b631e539 | 219 | /** |
Anna Bridge |
169:a7c7b631e539 | 220 | * @brief Clear interrupt flags. |
Anna Bridge |
169:a7c7b631e539 | 221 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 222 | * @param mask Mask of interrupts to clear. |
Anna Bridge |
169:a7c7b631e539 | 223 | */ |
Anna Bridge |
169:a7c7b631e539 | 224 | __STATIC_INLINE void I2CM_ClearFlags(mxc_i2cm_regs_t *i2cm, uint32_t mask) |
Anna Bridge |
169:a7c7b631e539 | 225 | { |
Anna Bridge |
169:a7c7b631e539 | 226 | i2cm->intfl = mask; |
Anna Bridge |
169:a7c7b631e539 | 227 | } |
Anna Bridge |
169:a7c7b631e539 | 228 | |
Anna Bridge |
169:a7c7b631e539 | 229 | /** |
Anna Bridge |
169:a7c7b631e539 | 230 | * @brief Get interrupt flags. |
Anna Bridge |
169:a7c7b631e539 | 231 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 232 | * @returns Mask of active flags. |
Anna Bridge |
169:a7c7b631e539 | 233 | */ |
Anna Bridge |
169:a7c7b631e539 | 234 | __STATIC_INLINE unsigned I2CM_GetFlags(mxc_i2cm_regs_t *i2cm) |
Anna Bridge |
169:a7c7b631e539 | 235 | { |
Anna Bridge |
169:a7c7b631e539 | 236 | return(i2cm->intfl); |
Anna Bridge |
169:a7c7b631e539 | 237 | } |
Anna Bridge |
169:a7c7b631e539 | 238 | /** |
Anna Bridge |
169:a7c7b631e539 | 239 | * @brief Set the I2C Frequency |
Anna Bridge |
169:a7c7b631e539 | 240 | * @param i2cm Pointer to I2CM regs. |
Anna Bridge |
169:a7c7b631e539 | 241 | * @param speed speed in Hz |
Anna Bridge |
169:a7c7b631e539 | 242 | * @details sets the registers for the proper frequency |
Anna Bridge |
169:a7c7b631e539 | 243 | * @returns #E_NO_ERROR if Frequency is supported, #E_NOT_Supported otherwise. |
Anna Bridge |
169:a7c7b631e539 | 244 | */ |
Anna Bridge |
169:a7c7b631e539 | 245 | int I2CM_SetFrequency(mxc_i2cm_regs_t *i2cm, int speed); |
Anna Bridge |
169:a7c7b631e539 | 246 | |
Anna Bridge |
169:a7c7b631e539 | 247 | void I2CM_Recover(mxc_i2cm_regs_t *i2cm); |
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169:a7c7b631e539 | 248 | int I2CM_WriteTxFifo(mxc_i2cm_regs_t *regs, mxc_i2cm_fifo_regs_t *fifo, const uint16_t data); |
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169:a7c7b631e539 | 249 | int I2CM_TxInProgress(mxc_i2cm_regs_t *i2cm); |
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169:a7c7b631e539 | 250 | int I2CM_Tx(mxc_i2cm_regs_t *i2cm, mxc_i2cm_fifo_regs_t *fifo, uint8_t addr, const uint8_t *data, uint32_t len, uint8_t stop); |
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169:a7c7b631e539 | 251 | int I2CM_Rx(mxc_i2cm_regs_t *i2cm, mxc_i2cm_fifo_regs_t *fifo, uint8_t addr, uint8_t *data, uint32_t len); |
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169:a7c7b631e539 | 252 | |
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169:a7c7b631e539 | 253 | #ifdef __cplusplus |
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169:a7c7b631e539 | 254 | } |
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169:a7c7b631e539 | 255 | #endif |
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169:a7c7b631e539 | 256 | |
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169:a7c7b631e539 | 257 | #endif /* _I2CM_H_ */ |