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#ifndef TW_H
#define TW_H
typedef enum {
TWM_INVALID = 0,
TWM_WRITE,
TWM_READ_MULTI,
} twMode;
typedef enum {
TWST_WAIT = 0,
TWST_OK = 1,
TWST_ERR = 2,
} twStatus;
#include <stdint.h>
typedef struct {
twMode mode;
uint8_t address;
uint8_t subaddress;
uint8_t data;
uint8_t step;
/* read data store */
uint8_t *retData;
/* number of bytes to be read */
uint8_t count;
/* current byte */
uint8_t i;
twStatus status;
} twReq;
extern volatile twReq twr;
/* i2c device addresses */
#define L3GD20 0b11010100
#define L3GD20_WHOAMI 0xf
#define L3GD20_CTRLREG1 0x20
#define LIS302DL 0b00111000
#define LIS302DL_WHOAMI 0xf
#define LIS302DL_CTRLREG1 0x20
#include <stdbool.h>
void twInit ();
bool twWrite (const uint8_t address, const uint8_t subaddress,
const uint8_t data);
bool twReadMulti (const uint8_t address, const uint8_t subaddress,
uint8_t * const retData, const uint8_t count);
#endif /* TW_H */
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