forked from Elron_dev/elbear_arduino_bsp
42 lines
940 B
C
42 lines
940 B
C
#ifndef __TWI_H__
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#define __TWI_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef TWI_BUFFER_LENGTH
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#define TWI_BUFFER_LENGTH 32
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#endif
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// I2C state
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typedef enum
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{
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I2C_OK = 0,
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I2C_DATA_TOO_LONG = 1,
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I2C_NACK_ADDR = 2,
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I2C_NACK_DATA = 3,
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I2C_ERROR = 4,
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I2C_TIMEOUT = 5,
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I2C_BUSY = 6
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} i2c_status_e;
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uint8_t twi_init(uint8_t slaveAddress);
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void twi_deinit(void);
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uint8_t twi_setFrequency(uint32_t frequency, bool onInit);
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uint8_t twi_masterReadFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop);
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uint8_t twi_masterWriteTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop);
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i2c_status_e twi_slaveWrite(uint8_t *txData, uint8_t bytesNum);
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void twi_attachSlaveRxEvent(void (*function)(uint8_t*, int));
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void twi_attachSlaveTxEvent(void (*function)(void));
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void twi_interruptHandler(void);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TWI_H__ */
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