不韋 呂 / F746_AcousticEffector_MIC

Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．

Dependencies:   F746_GUI F746_SAI_IO

mbed_src_STM32F7/api/I2CSlave.h@10:56f2f01df983, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:44:13 2017 +0000
Revision:
10:56f2f01df983
Parent:
6:38f7dce055d0 
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 6:38f7dce055d0 1 /* mbed Microcontroller Library
MikamiUitOpen 6:38f7dce055d0 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 6:38f7dce055d0 3 *
MikamiUitOpen 6:38f7dce055d0 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 6:38f7dce055d0 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 6:38f7dce055d0 6 * You may obtain a copy of the License at
MikamiUitOpen 6:38f7dce055d0 7 *
MikamiUitOpen 6:38f7dce055d0 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 6:38f7dce055d0 9 *
MikamiUitOpen 6:38f7dce055d0 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 6:38f7dce055d0 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 6:38f7dce055d0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 6:38f7dce055d0 13 * See the License for the specific language governing permissions and
MikamiUitOpen 6:38f7dce055d0 14 * limitations under the License.
MikamiUitOpen 6:38f7dce055d0 15 */
MikamiUitOpen 6:38f7dce055d0 16 #ifndef MBED_I2C_SLAVE_H
MikamiUitOpen 6:38f7dce055d0 17 #define MBED_I2C_SLAVE_H
MikamiUitOpen 6:38f7dce055d0 18
MikamiUitOpen 6:38f7dce055d0 19 #include "platform.h"
MikamiUitOpen 6:38f7dce055d0 20
MikamiUitOpen 6:38f7dce055d0 21 #if DEVICE_I2CSLAVE
MikamiUitOpen 6:38f7dce055d0 22
MikamiUitOpen 6:38f7dce055d0 23 #include "i2c_api.h"
MikamiUitOpen 6:38f7dce055d0 24
MikamiUitOpen 6:38f7dce055d0 25 namespace mbed {
MikamiUitOpen 6:38f7dce055d0 26
MikamiUitOpen 6:38f7dce055d0 27 /** An I2C Slave, used for communicating with an I2C Master device
MikamiUitOpen 6:38f7dce055d0 28 *
MikamiUitOpen 6:38f7dce055d0 29 * Example:
MikamiUitOpen 6:38f7dce055d0 30 * @code
MikamiUitOpen 6:38f7dce055d0 31 * // Simple I2C responder
MikamiUitOpen 6:38f7dce055d0 32 * #include <mbed.h>
MikamiUitOpen 6:38f7dce055d0 33 *
MikamiUitOpen 6:38f7dce055d0 34 * I2CSlave slave(p9, p10);
MikamiUitOpen 6:38f7dce055d0 35 *
MikamiUitOpen 6:38f7dce055d0 36 * int main() {
MikamiUitOpen 6:38f7dce055d0 37 * char buf[10];
MikamiUitOpen 6:38f7dce055d0 38 * char msg[] = "Slave!";
MikamiUitOpen 6:38f7dce055d0 39 *
MikamiUitOpen 6:38f7dce055d0 40 * slave.address(0xA0);
MikamiUitOpen 6:38f7dce055d0 41 * while (1) {
MikamiUitOpen 6:38f7dce055d0 42 * int i = slave.receive();
MikamiUitOpen 6:38f7dce055d0 43 * switch (i) {
MikamiUitOpen 6:38f7dce055d0 44 * case I2CSlave::ReadAddressed:
MikamiUitOpen 6:38f7dce055d0 45 * slave.write(msg, strlen(msg) + 1); // Includes null char
MikamiUitOpen 6:38f7dce055d0 46 * break;
MikamiUitOpen 6:38f7dce055d0 47 * case I2CSlave::WriteGeneral:
MikamiUitOpen 6:38f7dce055d0 48 * slave.read(buf, 10);
MikamiUitOpen 6:38f7dce055d0 49 * printf("Read G: %s\n", buf);
MikamiUitOpen 6:38f7dce055d0 50 * break;
MikamiUitOpen 6:38f7dce055d0 51 * case I2CSlave::WriteAddressed:
MikamiUitOpen 6:38f7dce055d0 52 * slave.read(buf, 10);
MikamiUitOpen 6:38f7dce055d0 53 * printf("Read A: %s\n", buf);
MikamiUitOpen 6:38f7dce055d0 54 * break;
MikamiUitOpen 6:38f7dce055d0 55 * }
MikamiUitOpen 6:38f7dce055d0 56 * for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
MikamiUitOpen 6:38f7dce055d0 57 * }
MikamiUitOpen 6:38f7dce055d0 58 * }
MikamiUitOpen 6:38f7dce055d0 59 * @endcode
MikamiUitOpen 6:38f7dce055d0 60 */
MikamiUitOpen 6:38f7dce055d0 61 class I2CSlave {
MikamiUitOpen 6:38f7dce055d0 62
MikamiUitOpen 6:38f7dce055d0 63 public:
MikamiUitOpen 6:38f7dce055d0 64 enum RxStatus {
MikamiUitOpen 6:38f7dce055d0 65 NoData = 0,
MikamiUitOpen 6:38f7dce055d0 66 ReadAddressed = 1,
MikamiUitOpen 6:38f7dce055d0 67 WriteGeneral = 2,
MikamiUitOpen 6:38f7dce055d0 68 WriteAddressed = 3
MikamiUitOpen 6:38f7dce055d0 69 };
MikamiUitOpen 6:38f7dce055d0 70
MikamiUitOpen 6:38f7dce055d0 71 /** Create an I2C Slave interface, connected to the specified pins.
MikamiUitOpen 6:38f7dce055d0 72 *
MikamiUitOpen 6:38f7dce055d0 73 * @param sda I2C data line pin
MikamiUitOpen 6:38f7dce055d0 74 * @param scl I2C clock line pin
MikamiUitOpen 6:38f7dce055d0 75 */
MikamiUitOpen 6:38f7dce055d0 76 I2CSlave(PinName sda, PinName scl);
MikamiUitOpen 6:38f7dce055d0 77
MikamiUitOpen 6:38f7dce055d0 78 /** Set the frequency of the I2C interface
MikamiUitOpen 6:38f7dce055d0 79 *
MikamiUitOpen 6:38f7dce055d0 80 * @param hz The bus frequency in hertz
MikamiUitOpen 6:38f7dce055d0 81 */
MikamiUitOpen 6:38f7dce055d0 82 void frequency(int hz);
MikamiUitOpen 6:38f7dce055d0 83
MikamiUitOpen 6:38f7dce055d0 84 /** Checks to see if this I2C Slave has been addressed.
MikamiUitOpen 6:38f7dce055d0 85 *
MikamiUitOpen 6:38f7dce055d0 86 * @returns
MikamiUitOpen 6:38f7dce055d0 87 * A status indicating if the device has been addressed, and how
MikamiUitOpen 6:38f7dce055d0 88 * - NoData - the slave has not been addressed
MikamiUitOpen 6:38f7dce055d0 89 * - ReadAddressed - the master has requested a read from this slave
MikamiUitOpen 6:38f7dce055d0 90 * - WriteAddressed - the master is writing to this slave
MikamiUitOpen 6:38f7dce055d0 91 * - WriteGeneral - the master is writing to all slave
MikamiUitOpen 6:38f7dce055d0 92 */
MikamiUitOpen 6:38f7dce055d0 93 int receive(void);
MikamiUitOpen 6:38f7dce055d0 94
MikamiUitOpen 6:38f7dce055d0 95 /** Read from an I2C master.
MikamiUitOpen 6:38f7dce055d0 96 *
MikamiUitOpen 6:38f7dce055d0 97 * @param data pointer to the byte array to read data in to
MikamiUitOpen 6:38f7dce055d0 98 * @param length maximum number of bytes to read
MikamiUitOpen 6:38f7dce055d0 99 *
MikamiUitOpen 6:38f7dce055d0 100 * @returns
MikamiUitOpen 6:38f7dce055d0 101 * 0 on success,
MikamiUitOpen 6:38f7dce055d0 102 * non-0 otherwise
MikamiUitOpen 6:38f7dce055d0 103 */
MikamiUitOpen 6:38f7dce055d0 104 int read(char *data, int length);
MikamiUitOpen 6:38f7dce055d0 105
MikamiUitOpen 6:38f7dce055d0 106 /** Read a single byte from an I2C master.
MikamiUitOpen 6:38f7dce055d0 107 *
MikamiUitOpen 6:38f7dce055d0 108 * @returns
MikamiUitOpen 6:38f7dce055d0 109 * the byte read
MikamiUitOpen 6:38f7dce055d0 110 */
MikamiUitOpen 6:38f7dce055d0 111 int read(void);
MikamiUitOpen 6:38f7dce055d0 112
MikamiUitOpen 6:38f7dce055d0 113 /** Write to an I2C master.
MikamiUitOpen 6:38f7dce055d0 114 *
MikamiUitOpen 6:38f7dce055d0 115 * @param data pointer to the byte array to be transmitted
MikamiUitOpen 6:38f7dce055d0 116 * @param length the number of bytes to transmite
MikamiUitOpen 6:38f7dce055d0 117 *
MikamiUitOpen 6:38f7dce055d0 118 * @returns
MikamiUitOpen 6:38f7dce055d0 119 * 0 on success,
MikamiUitOpen 6:38f7dce055d0 120 * non-0 otherwise
MikamiUitOpen 6:38f7dce055d0 121 */
MikamiUitOpen 6:38f7dce055d0 122 int write(const char *data, int length);
MikamiUitOpen 6:38f7dce055d0 123
MikamiUitOpen 6:38f7dce055d0 124 /** Write a single byte to an I2C master.
MikamiUitOpen 6:38f7dce055d0 125 *
MikamiUitOpen 6:38f7dce055d0 126 * @data the byte to write
MikamiUitOpen 6:38f7dce055d0 127 *
MikamiUitOpen 6:38f7dce055d0 128 * @returns
MikamiUitOpen 6:38f7dce055d0 129 * '1' if an ACK was received,
MikamiUitOpen 6:38f7dce055d0 130 * '0' otherwise
MikamiUitOpen 6:38f7dce055d0 131 */
MikamiUitOpen 6:38f7dce055d0 132 int write(int data);
MikamiUitOpen 6:38f7dce055d0 133
MikamiUitOpen 6:38f7dce055d0 134 /** Sets the I2C slave address.
MikamiUitOpen 6:38f7dce055d0 135 *
MikamiUitOpen 6:38f7dce055d0 136 * @param address The address to set for the slave (ignoring the least
MikamiUitOpen 6:38f7dce055d0 137 * signifcant bit). If set to 0, the slave will only respond to the
MikamiUitOpen 6:38f7dce055d0 138 * general call address.
MikamiUitOpen 6:38f7dce055d0 139 */
MikamiUitOpen 6:38f7dce055d0 140 void address(int address);
MikamiUitOpen 6:38f7dce055d0 141
MikamiUitOpen 6:38f7dce055d0 142 /** Reset the I2C slave back into the known ready receiving state.
MikamiUitOpen 6:38f7dce055d0 143 */
MikamiUitOpen 6:38f7dce055d0 144 void stop(void);
MikamiUitOpen 6:38f7dce055d0 145
MikamiUitOpen 6:38f7dce055d0 146 protected:
MikamiUitOpen 6:38f7dce055d0 147 i2c_t _i2c;
MikamiUitOpen 6:38f7dce055d0 148 };
MikamiUitOpen 6:38f7dce055d0 149
MikamiUitOpen 6:38f7dce055d0 150 } // namespace mbed
MikamiUitOpen 6:38f7dce055d0 151
MikamiUitOpen 6:38f7dce055d0 152 #endif
MikamiUitOpen 6:38f7dce055d0 153
MikamiUitOpen 6:38f7dce055d0 154 #endif