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46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* i2c.h
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*
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* Copyright 2015 Edward V. Emelianoff <eddy@sao.ru, edward.emelianoff@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#pragma once
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#ifndef __I2C_H__
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#define __I2C_H__
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#include "stm8l.h"
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// flags for i2c_state
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typedef enum{
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I2C_OK = 0,
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I2C_LINEBUSY,
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I2C_TMOUT,
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I2C_NOADDR,
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I2C_NACK,
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I2C_HWPROBLEM
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} i2c_status;
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void i2c_setup();
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void i2c_set_addr7(U8 addr);
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i2c_status i2c_7bit_send_onebyte(U8 data);
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i2c_status i2c_7bit_send(U8 *data, U8 datalen);
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i2c_status i2c_7bit_receive_onebyte(U8 *data);
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i2c_status i2c_7bit_receive_twobyte(U8 *data);
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#endif // __I2C_H__
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