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yalezy
84 lines
4.1 KiB
C++
84 lines
4.1 KiB
C++
// I2Cdev library collection - Main I2C device class
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// Abstracts bit and byte I2C R/W functions into a convenient class
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// EFM32 stub port by Nicolas Baldeck <nicolas@pioupiou.fr>
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// Based on Arduino's I2Cdev by Jeff Rowberg <jeff@rowberg.net>
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//
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// Changelog:
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// 2015-01-02 - Initial release
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/* ============================================
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I2Cdev device library code is placed under the MIT license
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Copyright (c) 2015 Jeff Rowberg, Nicolas Baldeck
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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===============================================
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*/
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#ifndef _I2CDEV_H_
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#define _I2CDEV_H_
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#include <driver/i2c.h>
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#define I2C_SDA_PORT gpioPortA
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#define I2C_SDA_PIN 0
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#define I2C_SDA_MODE gpioModeWiredAnd
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#define I2C_SDA_DOUT 1
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#define I2C_SCL_PORT gpioPortA
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#define I2C_SCL_PIN 1
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#define I2C_SCL_MODE gpioModeWiredAnd
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#define I2C_SCL_DOUT 1
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#define I2CDEV_DEFAULT_READ_TIMEOUT 1000
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class I2Cdev {
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public:
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I2Cdev();
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static void initialize();
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static void enable(bool isEnabled);
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static int8_t readBit(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout);
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//TODO static int8_t readBitW(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout);
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static int8_t readBits(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout);
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//TODO static int8_t readBitsW(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout);
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static int8_t readByte(uint8_t devAddr, uint8_t regAddr, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout);
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//TODO static int8_t readWord(uint8_t devAddr, uint8_t regAddr, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout);
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static int8_t readBytes(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data, uint16_t timeout=I2Cdev::readTimeout);
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//TODO static int8_t readWords(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint16_t *data, uint16_t timeout=I2Cdev::readTimeout);
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static bool writeBit(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint8_t data);
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//TODO static bool writeBitW(uint8_t devAddr, uint8_t regAddr, uint8_t bitNum, uint16_t data);
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static bool writeBits(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint8_t data);
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//TODO static bool writeBitsW(uint8_t devAddr, uint8_t regAddr, uint8_t bitStart, uint8_t length, uint16_t data);
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static bool writeByte(uint8_t devAddr, uint8_t regAddr, uint8_t data);
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static bool writeWord(uint8_t devAddr, uint8_t regAddr, uint16_t data);
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static bool writeBytes(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint8_t *data);
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//TODO static bool writeWords(uint8_t devAddr, uint8_t regAddr, uint8_t length, uint16_t *data);
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static uint16_t readTimeout;
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//private:
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static void SelectRegister(uint8_t dev, uint8_t reg);
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//static I2C_TransferReturn_TypeDef transfer(I2C_TransferSeq_TypeDef *seq, uint16_t timeout=I2Cdev::readTimeout);
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};
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#endif /* _I2CDEV_H_ */
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