不韋 呂 / F746_SD_Player_Demo

Demo program for library named SD_PlayerSkeleton of SD card player skeleton. SD カードプレーヤのための骨組みとして使うためのライブラリ SD_PlayerSkeleton の使用例．このプログラムについては，CQ出版社インターフェース誌 2018年7月号で解説している．

Dependencies:   F746_GUI F746_SAI_IO SD_PlayerSkeleton

mbed_src_STM32F7/api/I2C.h@2:cf42e62a97dc, 2016-10-02 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Oct 02 03:29:34 2016 +0000
Revision:
2:cf42e62a97dc
3

Who changed what in which revision?

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MikamiUitOpen 2:cf42e62a97dc 1 /* mbed Microcontroller Library
MikamiUitOpen 2:cf42e62a97dc 2 * Copyright (c) 2006-2015 ARM Limited
MikamiUitOpen 2:cf42e62a97dc 3 *
MikamiUitOpen 2:cf42e62a97dc 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 2:cf42e62a97dc 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 2:cf42e62a97dc 6 * You may obtain a copy of the License at
MikamiUitOpen 2:cf42e62a97dc 7 *
MikamiUitOpen 2:cf42e62a97dc 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 2:cf42e62a97dc 9 *
MikamiUitOpen 2:cf42e62a97dc 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 2:cf42e62a97dc 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 2:cf42e62a97dc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 2:cf42e62a97dc 13 * See the License for the specific language governing permissions and
MikamiUitOpen 2:cf42e62a97dc 14 * limitations under the License.
MikamiUitOpen 2:cf42e62a97dc 15 */
MikamiUitOpen 2:cf42e62a97dc 16 #ifndef MBED_I2C_H
MikamiUitOpen 2:cf42e62a97dc 17 #define MBED_I2C_H
MikamiUitOpen 2:cf42e62a97dc 18
MikamiUitOpen 2:cf42e62a97dc 19 #include "platform.h"
MikamiUitOpen 2:cf42e62a97dc 20
MikamiUitOpen 2:cf42e62a97dc 21 #if DEVICE_I2C
MikamiUitOpen 2:cf42e62a97dc 22
MikamiUitOpen 2:cf42e62a97dc 23 #include "i2c_api.h"
MikamiUitOpen 2:cf42e62a97dc 24
MikamiUitOpen 2:cf42e62a97dc 25 #if DEVICE_I2C_ASYNCH
MikamiUitOpen 2:cf42e62a97dc 26 #include "CThunk.h"
MikamiUitOpen 2:cf42e62a97dc 27 #include "dma_api.h"
MikamiUitOpen 2:cf42e62a97dc 28 #include "FunctionPointer.h"
MikamiUitOpen 2:cf42e62a97dc 29 #endif
MikamiUitOpen 2:cf42e62a97dc 30
MikamiUitOpen 2:cf42e62a97dc 31 namespace mbed {
MikamiUitOpen 2:cf42e62a97dc 32
MikamiUitOpen 2:cf42e62a97dc 33 /** An I2C Master, used for communicating with I2C slave devices
MikamiUitOpen 2:cf42e62a97dc 34 *
MikamiUitOpen 2:cf42e62a97dc 35 * Example:
MikamiUitOpen 2:cf42e62a97dc 36 * @code
MikamiUitOpen 2:cf42e62a97dc 37 * // Read from I2C slave at address 0x62
MikamiUitOpen 2:cf42e62a97dc 38 *
MikamiUitOpen 2:cf42e62a97dc 39 * #include "mbed.h"
MikamiUitOpen 2:cf42e62a97dc 40 *
MikamiUitOpen 2:cf42e62a97dc 41 * I2C i2c(p28, p27);
MikamiUitOpen 2:cf42e62a97dc 42 *
MikamiUitOpen 2:cf42e62a97dc 43 * int main() {
MikamiUitOpen 2:cf42e62a97dc 44 * int address = 0x62;
MikamiUitOpen 2:cf42e62a97dc 45 * char data[2];
MikamiUitOpen 2:cf42e62a97dc 46 * i2c.read(address, data, 2);
MikamiUitOpen 2:cf42e62a97dc 47 * }
MikamiUitOpen 2:cf42e62a97dc 48 * @endcode
MikamiUitOpen 2:cf42e62a97dc 49 */
MikamiUitOpen 2:cf42e62a97dc 50 class I2C {
MikamiUitOpen 2:cf42e62a97dc 51
MikamiUitOpen 2:cf42e62a97dc 52 public:
MikamiUitOpen 2:cf42e62a97dc 53 enum RxStatus {
MikamiUitOpen 2:cf42e62a97dc 54 NoData,
MikamiUitOpen 2:cf42e62a97dc 55 MasterGeneralCall,
MikamiUitOpen 2:cf42e62a97dc 56 MasterWrite,
MikamiUitOpen 2:cf42e62a97dc 57 MasterRead
MikamiUitOpen 2:cf42e62a97dc 58 };
MikamiUitOpen 2:cf42e62a97dc 59
MikamiUitOpen 2:cf42e62a97dc 60 enum Acknowledge {
MikamiUitOpen 2:cf42e62a97dc 61 NoACK = 0,
MikamiUitOpen 2:cf42e62a97dc 62 ACK = 1
MikamiUitOpen 2:cf42e62a97dc 63 };
MikamiUitOpen 2:cf42e62a97dc 64
MikamiUitOpen 2:cf42e62a97dc 65 /** Create an I2C Master interface, connected to the specified pins
MikamiUitOpen 2:cf42e62a97dc 66 *
MikamiUitOpen 2:cf42e62a97dc 67 * @param sda I2C data line pin
MikamiUitOpen 2:cf42e62a97dc 68 * @param scl I2C clock line pin
MikamiUitOpen 2:cf42e62a97dc 69 */
MikamiUitOpen 2:cf42e62a97dc 70 I2C(PinName sda, PinName scl);
MikamiUitOpen 2:cf42e62a97dc 71
MikamiUitOpen 2:cf42e62a97dc 72 /** Set the frequency of the I2C interface
MikamiUitOpen 2:cf42e62a97dc 73 *
MikamiUitOpen 2:cf42e62a97dc 74 * @param hz The bus frequency in hertz
MikamiUitOpen 2:cf42e62a97dc 75 */
MikamiUitOpen 2:cf42e62a97dc 76 void frequency(int hz);
MikamiUitOpen 2:cf42e62a97dc 77
MikamiUitOpen 2:cf42e62a97dc 78 /** Read from an I2C slave
MikamiUitOpen 2:cf42e62a97dc 79 *
MikamiUitOpen 2:cf42e62a97dc 80 * Performs a complete read transaction. The bottom bit of
MikamiUitOpen 2:cf42e62a97dc 81 * the address is forced to 1 to indicate a read.
MikamiUitOpen 2:cf42e62a97dc 82 *
MikamiUitOpen 2:cf42e62a97dc 83 * @param address 8-bit I2C slave address [ addr | 1 ]
MikamiUitOpen 2:cf42e62a97dc 84 * @param data Pointer to the byte-array to read data in to
MikamiUitOpen 2:cf42e62a97dc 85 * @param length Number of bytes to read
MikamiUitOpen 2:cf42e62a97dc 86 * @param repeated Repeated start, true - don't send stop at end
MikamiUitOpen 2:cf42e62a97dc 87 *
MikamiUitOpen 2:cf42e62a97dc 88 * @returns
MikamiUitOpen 2:cf42e62a97dc 89 * 0 on success (ack),
MikamiUitOpen 2:cf42e62a97dc 90 * non-0 on failure (nack)
MikamiUitOpen 2:cf42e62a97dc 91 */
MikamiUitOpen 2:cf42e62a97dc 92 int read(int address, char *data, int length, bool repeated = false);
MikamiUitOpen 2:cf42e62a97dc 93
MikamiUitOpen 2:cf42e62a97dc 94 /** Read a single byte from the I2C bus
MikamiUitOpen 2:cf42e62a97dc 95 *
MikamiUitOpen 2:cf42e62a97dc 96 * @param ack indicates if the byte is to be acknowledged (1 = acknowledge)
MikamiUitOpen 2:cf42e62a97dc 97 *
MikamiUitOpen 2:cf42e62a97dc 98 * @returns
MikamiUitOpen 2:cf42e62a97dc 99 * the byte read
MikamiUitOpen 2:cf42e62a97dc 100 */
MikamiUitOpen 2:cf42e62a97dc 101 int read(int ack);
MikamiUitOpen 2:cf42e62a97dc 102
MikamiUitOpen 2:cf42e62a97dc 103 /** Write to an I2C slave
MikamiUitOpen 2:cf42e62a97dc 104 *
MikamiUitOpen 2:cf42e62a97dc 105 * Performs a complete write transaction. The bottom bit of
MikamiUitOpen 2:cf42e62a97dc 106 * the address is forced to 0 to indicate a write.
MikamiUitOpen 2:cf42e62a97dc 107 *
MikamiUitOpen 2:cf42e62a97dc 108 * @param address 8-bit I2C slave address [ addr | 0 ]
MikamiUitOpen 2:cf42e62a97dc 109 * @param data Pointer to the byte-array data to send
MikamiUitOpen 2:cf42e62a97dc 110 * @param length Number of bytes to send
MikamiUitOpen 2:cf42e62a97dc 111 * @param repeated Repeated start, true - do not send stop at end
MikamiUitOpen 2:cf42e62a97dc 112 *
MikamiUitOpen 2:cf42e62a97dc 113 * @returns
MikamiUitOpen 2:cf42e62a97dc 114 * 0 on success (ack),
MikamiUitOpen 2:cf42e62a97dc 115 * non-0 on failure (nack)
MikamiUitOpen 2:cf42e62a97dc 116 */
MikamiUitOpen 2:cf42e62a97dc 117 int write(int address, const char *data, int length, bool repeated = false);
MikamiUitOpen 2:cf42e62a97dc 118
MikamiUitOpen 2:cf42e62a97dc 119 /** Write single byte out on the I2C bus
MikamiUitOpen 2:cf42e62a97dc 120 *
MikamiUitOpen 2:cf42e62a97dc 121 * @param data data to write out on bus
MikamiUitOpen 2:cf42e62a97dc 122 *
MikamiUitOpen 2:cf42e62a97dc 123 * @returns
MikamiUitOpen 2:cf42e62a97dc 124 * '1' if an ACK was received,
MikamiUitOpen 2:cf42e62a97dc 125 * '0' otherwise
MikamiUitOpen 2:cf42e62a97dc 126 */
MikamiUitOpen 2:cf42e62a97dc 127 int write(int data);
MikamiUitOpen 2:cf42e62a97dc 128
MikamiUitOpen 2:cf42e62a97dc 129 /** Creates a start condition on the I2C bus
MikamiUitOpen 2:cf42e62a97dc 130 */
MikamiUitOpen 2:cf42e62a97dc 131
MikamiUitOpen 2:cf42e62a97dc 132 void start(void);
MikamiUitOpen 2:cf42e62a97dc 133
MikamiUitOpen 2:cf42e62a97dc 134 /** Creates a stop condition on the I2C bus
MikamiUitOpen 2:cf42e62a97dc 135 */
MikamiUitOpen 2:cf42e62a97dc 136 void stop(void);
MikamiUitOpen 2:cf42e62a97dc 137
MikamiUitOpen 2:cf42e62a97dc 138 #if DEVICE_I2C_ASYNCH
MikamiUitOpen 2:cf42e62a97dc 139
MikamiUitOpen 2:cf42e62a97dc 140 /** Start non-blocking I2C transfer.
MikamiUitOpen 2:cf42e62a97dc 141 *
MikamiUitOpen 2:cf42e62a97dc 142 * @param address 8/10 bit I2c slave address
MikamiUitOpen 2:cf42e62a97dc 143 * @param tx_buffer The TX buffer with data to be transfered
MikamiUitOpen 2:cf42e62a97dc 144 * @param tx_length The length of TX buffer in bytes
MikamiUitOpen 2:cf42e62a97dc 145 * @param rx_buffer The RX buffer which is used for received data
MikamiUitOpen 2:cf42e62a97dc 146 * @param rx_length The length of RX buffer in bytes
MikamiUitOpen 2:cf42e62a97dc 147 * @param event The logical OR of events to modify
MikamiUitOpen 2:cf42e62a97dc 148 * @param callback The event callback function
MikamiUitOpen 2:cf42e62a97dc 149 * @param repeated Repeated start, true - do not send stop at end
MikamiUitOpen 2:cf42e62a97dc 150 * @return Zero if the transfer has started, or -1 if I2C peripheral is busy
MikamiUitOpen 2:cf42e62a97dc 151 */
MikamiUitOpen 2:cf42e62a97dc 152 int transfer(int address, const char *tx_buffer, int tx_length, char *rx_buffer, int rx_length, const event_callback_t& callback, int event = I2C_EVENT_TRANSFER_COMPLETE, bool repeated = false);
MikamiUitOpen 2:cf42e62a97dc 153
MikamiUitOpen 2:cf42e62a97dc 154 /** Abort the on-going I2C transfer
MikamiUitOpen 2:cf42e62a97dc 155 */
MikamiUitOpen 2:cf42e62a97dc 156 void abort_transfer();
MikamiUitOpen 2:cf42e62a97dc 157 protected:
MikamiUitOpen 2:cf42e62a97dc 158 void irq_handler_asynch(void);
MikamiUitOpen 2:cf42e62a97dc 159 event_callback_t _callback;
MikamiUitOpen 2:cf42e62a97dc 160 CThunk<I2C> _irq;
MikamiUitOpen 2:cf42e62a97dc 161 DMAUsage _usage;
MikamiUitOpen 2:cf42e62a97dc 162 #endif
MikamiUitOpen 2:cf42e62a97dc 163
MikamiUitOpen 2:cf42e62a97dc 164 protected:
MikamiUitOpen 2:cf42e62a97dc 165 void aquire();
MikamiUitOpen 2:cf42e62a97dc 166
MikamiUitOpen 2:cf42e62a97dc 167 i2c_t _i2c;
MikamiUitOpen 2:cf42e62a97dc 168 static I2C *_owner;
MikamiUitOpen 2:cf42e62a97dc 169 int _hz;
MikamiUitOpen 2:cf42e62a97dc 170 };
MikamiUitOpen 2:cf42e62a97dc 171
MikamiUitOpen 2:cf42e62a97dc 172 } // namespace mbed
MikamiUitOpen 2:cf42e62a97dc 173
MikamiUitOpen 2:cf42e62a97dc 174 #endif
MikamiUitOpen 2:cf42e62a97dc 175
MikamiUitOpen 2:cf42e62a97dc 176 #endif