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Diff: components/802_15_4_RF/atmel-rf-driver/source/at24mac.h
- Revision:
- 2:7aab896b1a3b
diff -r 7bcfbc328423 -r 7aab896b1a3b components/802_15_4_RF/atmel-rf-driver/source/at24mac.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/components/802_15_4_RF/atmel-rf-driver/source/at24mac.h Wed Mar 13 11:03:24 2019 +0000 @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2014-2015 ARM Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * Licensed under the Apache License, Version 2.0 (the License); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef AT24MAC_H +#define AT24MAC_H + +#include "PinNames.h" + +#if DEVICE_I2C + +#include "I2C.h" +#include "drivers/DigitalInOut.h" +#include "platform/mbed_wait_api.h" + +/* + * AT24MAC drivers. + * + * This is a EEPROM chip designed to contain factory programmed read-only EUI-64 or EUI-48, + * a 128bit serial number and some user programmable EEPROM. + * + * AT24MAC602 contains EUI-64, use read_eui64() + * AT24MAC402 contains EUI-64, use read_eui48() + * + * NOTE: You cannot use both EUI-64 and EUI-48. Chip contains only one of those. + */ + +class AT24Mac { +public: + AT24Mac(PinName sda, PinName scl); + + /** + * Read unique serial number from chip. + * \param buf pointer to write serial number to. Must have space for 16 bytes. + * \return zero on success, negative number on failure + */ + int read_serial(void *buf); + + /** + * Read EUI-64 from chip. + * \param buf pointer to write EUI-64 to. Must have space for 8 bytes. + * \return zero on success, negative number on failure + */ + int read_eui64(void *buf); + + /** + * Read EUI-48 from chip. + * \param buf pointer to write EUI-48 to. Must have space for 6 bytes. + * \return zero on success, negative number on failure + */ + int read_eui48(void *buf); + +private: + /* + * Dummy class to allow us to reset I2C before the I2C constructor is called in + * the initializer list of AT24Mac's constructor + */ + class I2CReset { + public: + I2CReset(PinName sda, PinName scl); + }; + I2CReset i2c_reset; + mbed::I2C _i2c; +}; + +#endif /* DEVICE_I2C */ +#endif /* AT24MAC_H */