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#define _I2C_H_
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#define _I2C_H_
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/**
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/**
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* i2c read function. reads a block of data with the length len
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* i2c read function. reads a block of data with the length len
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*
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*
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* \param[in] i2c_addr device adress on the i2c bus
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* \param[in] addr device adress on the i2c bus
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* \param[out] buf result buffer, contains the readed data when successful
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* \param[out] buf result buffer, contains the readed data when successful
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* \param[in] len length of the block to read
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* \param[in] len length of the block to read
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* \return returns non-zero if successful, else 0
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* \return returns non-zero if successful, else 0
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*/
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*/
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unsigned char i2c_read (unsigned char addr, xdata unsigned char *buf, unsigned char len);
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unsigned char i2c_read (unsigned char addr, xdata unsigned char *buf, unsigned char len);
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/**
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/**
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* i2c write function. writes a block of data with the length len
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* i2c write function. writes a block of data with the length len
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*
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*
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* \param[in] i2c_addr device adress on the i2c bus
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* \param[in] addr device adress on the i2c bus
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* \param[in] buf data buffer, contains the data to be written
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* \param[in] buf data buffer, contains the data to be written
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* \param[in] len length of the block to write
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* \param[in] len length of the block to write
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* \return returns non-zero if successful, else 0
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* \return returns non-zero if successful, else 0
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*/
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*/
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unsigned char i2c_write (unsigned char addr, xdata const unsigned char *buf, unsigned char len);
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unsigned char i2c_write (unsigned char addr, xdata const unsigned char *buf, unsigned char len);
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