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/*
* Copyright 2020 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef SOFTI2C_H
#define SOFTI2C_H
class SoftI2C {
private:
SoftI2C(const SoftI2C ©);
unsigned char sda, scl;
#if SOFTI2C_PULLUP_EXTERNAL
unsigned char sda_pull, scl_pull;
#endif
void start();
void stop();
bool tx(unsigned char byte);
unsigned char rx(bool send_ack);
public:
#if SOFTI2C_PULLUP_EXTERNAL
SoftI2C(unsigned char sda, unsigned char scl,
unsigned char sda_pull, unsigned char scl_pull) :
sda(sda), scl(scl), sda_pull(sda_pull), scl_pull(scl_pull) {}
#else
SoftI2C(unsigned char sda, unsigned char scl) : sda(sda), scl(scl) {}
#endif
signed char setup();
void scan(unsigned int *results);
signed char xmit(unsigned char address,
unsigned char tx_len, unsigned char *tx_buf,
unsigned char rx_len, unsigned char *rx_buf);
};
extern SoftI2C i2c;
#endif
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