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Committer:
DuaaAbusharkh
Date:
Mon Apr 15 08:30:22 2019 +0000
Revision:
0:a49e37a83a7a
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DuaaAbusharkh 0:a49e37a83a7a 1 /*
DuaaAbusharkh 0:a49e37a83a7a 2 * Copyright (c) 2014-2015 ARM Limited. All rights reserved.
DuaaAbusharkh 0:a49e37a83a7a 3 * SPDX-License-Identifier: Apache-2.0
DuaaAbusharkh 0:a49e37a83a7a 4 * Licensed under the Apache License, Version 2.0 (the License); you may
DuaaAbusharkh 0:a49e37a83a7a 5 * not use this file except in compliance with the License.
DuaaAbusharkh 0:a49e37a83a7a 6 * You may obtain a copy of the License at
DuaaAbusharkh 0:a49e37a83a7a 7 *
DuaaAbusharkh 0:a49e37a83a7a 8 * http://www.apache.org/licenses/LICENSE-2.0
DuaaAbusharkh 0:a49e37a83a7a 9 *
DuaaAbusharkh 0:a49e37a83a7a 10 * Unless required by applicable law or agreed to in writing, software
DuaaAbusharkh 0:a49e37a83a7a 11 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
DuaaAbusharkh 0:a49e37a83a7a 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
DuaaAbusharkh 0:a49e37a83a7a 13 * See the License for the specific language governing permissions and
DuaaAbusharkh 0:a49e37a83a7a 14 * limitations under the License.
DuaaAbusharkh 0:a49e37a83a7a 15 */
DuaaAbusharkh 0:a49e37a83a7a 16 #ifndef AT24MAC_H
DuaaAbusharkh 0:a49e37a83a7a 17 #define AT24MAC_H
DuaaAbusharkh 0:a49e37a83a7a 18
DuaaAbusharkh 0:a49e37a83a7a 19 #include "PinNames.h"
DuaaAbusharkh 0:a49e37a83a7a 20 #include "I2C.h"
DuaaAbusharkh 0:a49e37a83a7a 21 #include "drivers/DigitalInOut.h"
DuaaAbusharkh 0:a49e37a83a7a 22 #include "platform/mbed_wait_api.h"
DuaaAbusharkh 0:a49e37a83a7a 23
DuaaAbusharkh 0:a49e37a83a7a 24 /*
DuaaAbusharkh 0:a49e37a83a7a 25 * AT24MAC drivers.
DuaaAbusharkh 0:a49e37a83a7a 26 *
DuaaAbusharkh 0:a49e37a83a7a 27 * This is a EEPROM chip designed to contain factory programmed read-only EUI-64 or EUI-48,
DuaaAbusharkh 0:a49e37a83a7a 28 * a 128bit serial number and some user programmable EEPROM.
DuaaAbusharkh 0:a49e37a83a7a 29 *
DuaaAbusharkh 0:a49e37a83a7a 30 * AT24MAC602 contains EUI-64, use read_eui64()
DuaaAbusharkh 0:a49e37a83a7a 31 * AT24MAC402 contains EUI-64, use read_eui48()
DuaaAbusharkh 0:a49e37a83a7a 32 *
DuaaAbusharkh 0:a49e37a83a7a 33 * NOTE: You cannot use both EUI-64 and EUI-48. Chip contains only one of those.
DuaaAbusharkh 0:a49e37a83a7a 34 */
DuaaAbusharkh 0:a49e37a83a7a 35
DuaaAbusharkh 0:a49e37a83a7a 36 class AT24Mac {
DuaaAbusharkh 0:a49e37a83a7a 37 public:
DuaaAbusharkh 0:a49e37a83a7a 38 AT24Mac(PinName sda, PinName scl);
DuaaAbusharkh 0:a49e37a83a7a 39
DuaaAbusharkh 0:a49e37a83a7a 40 /**
DuaaAbusharkh 0:a49e37a83a7a 41 * Read unique serial number from chip.
DuaaAbusharkh 0:a49e37a83a7a 42 * \param buf pointer to write serial number to. Must have space for 16 bytes.
DuaaAbusharkh 0:a49e37a83a7a 43 * \return zero on success, negative number on failure
DuaaAbusharkh 0:a49e37a83a7a 44 */
DuaaAbusharkh 0:a49e37a83a7a 45 int read_serial(void *buf);
DuaaAbusharkh 0:a49e37a83a7a 46
DuaaAbusharkh 0:a49e37a83a7a 47 /**
DuaaAbusharkh 0:a49e37a83a7a 48 * Read EUI-64 from chip.
DuaaAbusharkh 0:a49e37a83a7a 49 * \param buf pointer to write EUI-64 to. Must have space for 8 bytes.
DuaaAbusharkh 0:a49e37a83a7a 50 * \return zero on success, negative number on failure
DuaaAbusharkh 0:a49e37a83a7a 51 */
DuaaAbusharkh 0:a49e37a83a7a 52 int read_eui64(void *buf);
DuaaAbusharkh 0:a49e37a83a7a 53
DuaaAbusharkh 0:a49e37a83a7a 54 /**
DuaaAbusharkh 0:a49e37a83a7a 55 * Read EUI-48 from chip.
DuaaAbusharkh 0:a49e37a83a7a 56 * \param buf pointer to write EUI-48 to. Must have space for 6 bytes.
DuaaAbusharkh 0:a49e37a83a7a 57 * \return zero on success, negative number on failure
DuaaAbusharkh 0:a49e37a83a7a 58 */
DuaaAbusharkh 0:a49e37a83a7a 59 int read_eui48(void *buf);
DuaaAbusharkh 0:a49e37a83a7a 60
DuaaAbusharkh 0:a49e37a83a7a 61 private:
DuaaAbusharkh 0:a49e37a83a7a 62 /*
DuaaAbusharkh 0:a49e37a83a7a 63 * Dummy class to allow us to reset I2C before the I2C constructor is called in
DuaaAbusharkh 0:a49e37a83a7a 64 * the initializer list of AT24Mac's constructor
DuaaAbusharkh 0:a49e37a83a7a 65 */
DuaaAbusharkh 0:a49e37a83a7a 66 class I2CReset {
DuaaAbusharkh 0:a49e37a83a7a 67 public:
DuaaAbusharkh 0:a49e37a83a7a 68 I2CReset(PinName sda, PinName scl);
DuaaAbusharkh 0:a49e37a83a7a 69 };
DuaaAbusharkh 0:a49e37a83a7a 70 I2CReset i2c_reset;
DuaaAbusharkh 0:a49e37a83a7a 71 mbed::I2C _i2c;
DuaaAbusharkh 0:a49e37a83a7a 72 };
DuaaAbusharkh 0:a49e37a83a7a 73
DuaaAbusharkh 0:a49e37a83a7a 74 #endif /* AT24MAC_H */