不韋 呂 / F746_MySoundMachine

Integrated program of 4 different kinds of application programs for processing sound signal. 4種類のサウンド信号処理を統合したプログラム．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton UIT_FFT_Real

mbed_src_STM32F7/api/I2CSlave.h@16:d60e5187fd31, 2017-04-27 (annotated)

Committer:
MikamiUitOpen
Date:
Thu Apr 27 23:55:53 2017 +0000
Revision:
16:d60e5187fd31
Parent:
2:fcba17e3d573 
17

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:224dccbc4edd 1 /* mbed Microcontroller Library
MikamiUitOpen 0:224dccbc4edd 2 * Copyright (c) 2006-2013 ARM Limited
MikamiUitOpen 0:224dccbc4edd 3 *
MikamiUitOpen 0:224dccbc4edd 4 * Licensed under the Apache License, Version 2.0 (the "License");
MikamiUitOpen 0:224dccbc4edd 5 * you may not use this file except in compliance with the License.
MikamiUitOpen 0:224dccbc4edd 6 * You may obtain a copy of the License at
MikamiUitOpen 0:224dccbc4edd 7 *
MikamiUitOpen 0:224dccbc4edd 8 * http://www.apache.org/licenses/LICENSE-2.0
MikamiUitOpen 0:224dccbc4edd 9 *
MikamiUitOpen 0:224dccbc4edd 10 * Unless required by applicable law or agreed to in writing, software
MikamiUitOpen 0:224dccbc4edd 11 * distributed under the License is distributed on an "AS IS" BASIS,
MikamiUitOpen 0:224dccbc4edd 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
MikamiUitOpen 0:224dccbc4edd 13 * See the License for the specific language governing permissions and
MikamiUitOpen 0:224dccbc4edd 14 * limitations under the License.
MikamiUitOpen 0:224dccbc4edd 15 */
MikamiUitOpen 0:224dccbc4edd 16 #ifndef MBED_I2C_SLAVE_H
MikamiUitOpen 0:224dccbc4edd 17 #define MBED_I2C_SLAVE_H
MikamiUitOpen 0:224dccbc4edd 18
MikamiUitOpen 0:224dccbc4edd 19 #include "platform.h"
MikamiUitOpen 0:224dccbc4edd 20
MikamiUitOpen 0:224dccbc4edd 21 #if DEVICE_I2CSLAVE
MikamiUitOpen 0:224dccbc4edd 22
MikamiUitOpen 0:224dccbc4edd 23 #include "i2c_api.h"
MikamiUitOpen 0:224dccbc4edd 24
MikamiUitOpen 0:224dccbc4edd 25 namespace mbed {
MikamiUitOpen 0:224dccbc4edd 26
MikamiUitOpen 0:224dccbc4edd 27 /** An I2C Slave, used for communicating with an I2C Master device
MikamiUitOpen 0:224dccbc4edd 28 *
MikamiUitOpen 0:224dccbc4edd 29 * Example:
MikamiUitOpen 0:224dccbc4edd 30 * @code
MikamiUitOpen 0:224dccbc4edd 31 * // Simple I2C responder
MikamiUitOpen 0:224dccbc4edd 32 * #include <mbed.h>
MikamiUitOpen 0:224dccbc4edd 33 *
MikamiUitOpen 0:224dccbc4edd 34 * I2CSlave slave(p9, p10);
MikamiUitOpen 0:224dccbc4edd 35 *
MikamiUitOpen 0:224dccbc4edd 36 * int main() {
MikamiUitOpen 0:224dccbc4edd 37 * char buf[10];
MikamiUitOpen 0:224dccbc4edd 38 * char msg[] = "Slave!";
MikamiUitOpen 0:224dccbc4edd 39 *
MikamiUitOpen 0:224dccbc4edd 40 * slave.address(0xA0);
MikamiUitOpen 0:224dccbc4edd 41 * while (1) {
MikamiUitOpen 0:224dccbc4edd 42 * int i = slave.receive();
MikamiUitOpen 0:224dccbc4edd 43 * switch (i) {
MikamiUitOpen 0:224dccbc4edd 44 * case I2CSlave::ReadAddressed:
MikamiUitOpen 0:224dccbc4edd 45 * slave.write(msg, strlen(msg) + 1); // Includes null char
MikamiUitOpen 0:224dccbc4edd 46 * break;
MikamiUitOpen 0:224dccbc4edd 47 * case I2CSlave::WriteGeneral:
MikamiUitOpen 0:224dccbc4edd 48 * slave.read(buf, 10);
MikamiUitOpen 0:224dccbc4edd 49 * printf("Read G: %s\n", buf);
MikamiUitOpen 0:224dccbc4edd 50 * break;
MikamiUitOpen 0:224dccbc4edd 51 * case I2CSlave::WriteAddressed:
MikamiUitOpen 0:224dccbc4edd 52 * slave.read(buf, 10);
MikamiUitOpen 0:224dccbc4edd 53 * printf("Read A: %s\n", buf);
MikamiUitOpen 0:224dccbc4edd 54 * break;
MikamiUitOpen 0:224dccbc4edd 55 * }
MikamiUitOpen 0:224dccbc4edd 56 * for(int i = 0; i < 10; i++) buf[i] = 0; // Clear buffer
MikamiUitOpen 0:224dccbc4edd 57 * }
MikamiUitOpen 0:224dccbc4edd 58 * }
MikamiUitOpen 0:224dccbc4edd 59 * @endcode
MikamiUitOpen 0:224dccbc4edd 60 */
MikamiUitOpen 0:224dccbc4edd 61 class I2CSlave {
MikamiUitOpen 0:224dccbc4edd 62
MikamiUitOpen 0:224dccbc4edd 63 public:
MikamiUitOpen 0:224dccbc4edd 64 enum RxStatus {
MikamiUitOpen 0:224dccbc4edd 65 NoData = 0,
MikamiUitOpen 0:224dccbc4edd 66 ReadAddressed = 1,
MikamiUitOpen 0:224dccbc4edd 67 WriteGeneral = 2,
MikamiUitOpen 0:224dccbc4edd 68 WriteAddressed = 3
MikamiUitOpen 0:224dccbc4edd 69 };
MikamiUitOpen 0:224dccbc4edd 70
MikamiUitOpen 0:224dccbc4edd 71 /** Create an I2C Slave interface, connected to the specified pins.
MikamiUitOpen 0:224dccbc4edd 72 *
MikamiUitOpen 0:224dccbc4edd 73 * @param sda I2C data line pin
MikamiUitOpen 0:224dccbc4edd 74 * @param scl I2C clock line pin
MikamiUitOpen 0:224dccbc4edd 75 */
MikamiUitOpen 0:224dccbc4edd 76 I2CSlave(PinName sda, PinName scl);
MikamiUitOpen 0:224dccbc4edd 77
MikamiUitOpen 0:224dccbc4edd 78 /** Set the frequency of the I2C interface
MikamiUitOpen 0:224dccbc4edd 79 *
MikamiUitOpen 0:224dccbc4edd 80 * @param hz The bus frequency in hertz
MikamiUitOpen 0:224dccbc4edd 81 */
MikamiUitOpen 0:224dccbc4edd 82 void frequency(int hz);
MikamiUitOpen 0:224dccbc4edd 83
MikamiUitOpen 0:224dccbc4edd 84 /** Checks to see if this I2C Slave has been addressed.
MikamiUitOpen 0:224dccbc4edd 85 *
MikamiUitOpen 0:224dccbc4edd 86 * @returns
MikamiUitOpen 0:224dccbc4edd 87 * A status indicating if the device has been addressed, and how
MikamiUitOpen 0:224dccbc4edd 88 * - NoData - the slave has not been addressed
MikamiUitOpen 0:224dccbc4edd 89 * - ReadAddressed - the master has requested a read from this slave
MikamiUitOpen 0:224dccbc4edd 90 * - WriteAddressed - the master is writing to this slave
MikamiUitOpen 0:224dccbc4edd 91 * - WriteGeneral - the master is writing to all slave
MikamiUitOpen 0:224dccbc4edd 92 */
MikamiUitOpen 0:224dccbc4edd 93 int receive(void);
MikamiUitOpen 0:224dccbc4edd 94
MikamiUitOpen 0:224dccbc4edd 95 /** Read from an I2C master.
MikamiUitOpen 0:224dccbc4edd 96 *
MikamiUitOpen 0:224dccbc4edd 97 * @param data pointer to the byte array to read data in to
MikamiUitOpen 0:224dccbc4edd 98 * @param length maximum number of bytes to read
MikamiUitOpen 0:224dccbc4edd 99 *
MikamiUitOpen 0:224dccbc4edd 100 * @returns
MikamiUitOpen 0:224dccbc4edd 101 * 0 on success,
MikamiUitOpen 0:224dccbc4edd 102 * non-0 otherwise
MikamiUitOpen 0:224dccbc4edd 103 */
MikamiUitOpen 0:224dccbc4edd 104 int read(char *data, int length);
MikamiUitOpen 0:224dccbc4edd 105
MikamiUitOpen 0:224dccbc4edd 106 /** Read a single byte from an I2C master.
MikamiUitOpen 0:224dccbc4edd 107 *
MikamiUitOpen 0:224dccbc4edd 108 * @returns
MikamiUitOpen 0:224dccbc4edd 109 * the byte read
MikamiUitOpen 0:224dccbc4edd 110 */
MikamiUitOpen 0:224dccbc4edd 111 int read(void);
MikamiUitOpen 0:224dccbc4edd 112
MikamiUitOpen 0:224dccbc4edd 113 /** Write to an I2C master.
MikamiUitOpen 0:224dccbc4edd 114 *
MikamiUitOpen 0:224dccbc4edd 115 * @param data pointer to the byte array to be transmitted
MikamiUitOpen 0:224dccbc4edd 116 * @param length the number of bytes to transmite
MikamiUitOpen 0:224dccbc4edd 117 *
MikamiUitOpen 0:224dccbc4edd 118 * @returns
MikamiUitOpen 0:224dccbc4edd 119 * 0 on success,
MikamiUitOpen 0:224dccbc4edd 120 * non-0 otherwise
MikamiUitOpen 0:224dccbc4edd 121 */
MikamiUitOpen 0:224dccbc4edd 122 int write(const char *data, int length);
MikamiUitOpen 0:224dccbc4edd 123
MikamiUitOpen 0:224dccbc4edd 124 /** Write a single byte to an I2C master.
MikamiUitOpen 0:224dccbc4edd 125 *
MikamiUitOpen 0:224dccbc4edd 126 * @data the byte to write
MikamiUitOpen 0:224dccbc4edd 127 *
MikamiUitOpen 0:224dccbc4edd 128 * @returns
MikamiUitOpen 0:224dccbc4edd 129 * '1' if an ACK was received,
MikamiUitOpen 0:224dccbc4edd 130 * '0' otherwise
MikamiUitOpen 0:224dccbc4edd 131 */
MikamiUitOpen 0:224dccbc4edd 132 int write(int data);
MikamiUitOpen 0:224dccbc4edd 133
MikamiUitOpen 0:224dccbc4edd 134 /** Sets the I2C slave address.
MikamiUitOpen 0:224dccbc4edd 135 *
MikamiUitOpen 0:224dccbc4edd 136 * @param address The address to set for the slave (ignoring the least
MikamiUitOpen 0:224dccbc4edd 137 * signifcant bit). If set to 0, the slave will only respond to the
MikamiUitOpen 0:224dccbc4edd 138 * general call address.
MikamiUitOpen 0:224dccbc4edd 139 */
MikamiUitOpen 0:224dccbc4edd 140 void address(int address);
MikamiUitOpen 0:224dccbc4edd 141
MikamiUitOpen 0:224dccbc4edd 142 /** Reset the I2C slave back into the known ready receiving state.
MikamiUitOpen 0:224dccbc4edd 143 */
MikamiUitOpen 0:224dccbc4edd 144 void stop(void);
MikamiUitOpen 0:224dccbc4edd 145
MikamiUitOpen 0:224dccbc4edd 146 protected:
MikamiUitOpen 0:224dccbc4edd 147 i2c_t _i2c;
MikamiUitOpen 0:224dccbc4edd 148 };
MikamiUitOpen 0:224dccbc4edd 149
MikamiUitOpen 0:224dccbc4edd 150 } // namespace mbed
MikamiUitOpen 0:224dccbc4edd 151
MikamiUitOpen 0:224dccbc4edd 152 #endif
MikamiUitOpen 0:224dccbc4edd 153
MikamiUitOpen 0:224dccbc4edd 154 #endif