simplei2c.h

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#ifndef __i2c_H
#define __i2c_H

#ifdef __cplusplus
extern "C"
{
#endif

#include <propeller.h>


typedef struct i2c_st
{
  volatile int scl_mask;
  volatile int scl_mask_inv;
  int sda_mask;
  int sda_mask_inv;
  int drivescl;  /* flag to force scl if non-zero */
} i2c;

HUBTEXT i2c *i2c_open(i2c *bus, int sclPin, int sdaPin, int sclDrive);

HUBTEXT void i2c_start(i2c *bus);

HUBTEXT void i2c_stop(i2c *bus);

HUBTEXT int  i2c_writeByte(i2c *bus, int byte);

HUBTEXT int  i2c_readByte(i2c *bus, int ackState);

HUBTEXT int  i2c_writeData(i2c *bus, const unsigned char *data, int count);

HUBTEXT int  i2c_readData(i2c *bus, unsigned char *data, int count);

HUBTEXT int  i2c_poll(i2c *bus, int addr);

#ifdef __cplusplus
}
#endif

#endif
/* __i2c_H */

/*
+--------------------------------------------------------------------
| TERMS OF USE: MIT License
+--------------------------------------------------------------------
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files
(the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of the Software,
and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+--------------------------------------------------------------------
*/