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#ifndef I2C1_H
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#define I2C1_H
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#define MAXI2C1BUF 32
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// I2C Operating Speed
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#define I2C_100KHZ 0x0
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#define I2C_400KHZ 0x1
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#define I2C_1MHZ 0x2
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// Operating State
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#define I2C_IDLE 0x1
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#define I2C_STARTED 0x2
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#define I2C_RCV_DATA 0x3
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#define I2C_SEND_DATA 0x4
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#define I2C_SEND_ADDR 0x5
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#define I2C_SEND_ADDR_2 0x6
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#define I2C_CHECK_ACK_SEND 0x7
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#define I2C_CHECK_ACK_RECV 0x8
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#define I2C_CHECK_ACK_RESTART 0x9
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#define I2C_REQ_DATA 0xA
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#define I2C_SEND_STOP 0xB
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#define I2C_SEND_START 0xC
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// Operating Mode
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#define I2C_MODE_SLAVE 0x10
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#define I2C_MODE_MASTER 0x11
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// Master Status
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#define I2C_MASTER_SEND 0x20
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#define I2C_MASTER_RECV 0x21
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#define I2C_MASTER_RESTART 0x22
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#define I2C_MASTER_IDLE 0x23
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// Return Status
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#define I2C_SEND_OK 0x30
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#define I2C_SEND_FAIL 0x31
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#define I2C_RECV_OK 0x32
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#define I2C_RECV_FAIL 0x33
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#define I2C_DATA_AVAL 0x34
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#define I2C_ERR_NOADDR 0x35
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#define I2C_ERR_OVERRUN 0x36
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#define I2C_ERR_NODATA 0x37
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#define I2C_ERR_BUFFER_OVERRUN 0x38
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typedef struct {
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uint8_t buffer_in[MAXI2C1BUF];
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uint8_t buffer_in_len;
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uint8_t buffer_in_len_tmp;
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uint8_t buffer_in_read_ind;
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uint8_t buffer_in_write_ind;
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uint8_t buffer_out[MAXI2C1BUF];
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uint8_t buffer_out_len;
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uint8_t buffer_out_ind;
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uint8_t operating_mode;
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uint8_t operating_state;
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uint8_t return_status;
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uint8_t master_dest_addr;
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uint8_t master_status;
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uint8_t slave_in_last_byte;
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uint8_t slave_sending_data;
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} I2C1_DATA;
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void I2C1_Init(I2C1_DATA *data);
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void I2C1_Interrupt_Handler(void);
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void I2C1_Interrupt_Slave(void);
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void I2C1_Interrupt_Master(void);
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void I2C1_Configure_Slave(uint8_t address);
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void I2C1_Configure_Master(uint8_t speed);
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void I2C1_Master_Send(uint8_t address, uint8_t length, uint8_t *msg);
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void I2C1_Master_Recv(uint8_t address, uint8_t length);
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void I2C1_Master_Restart(uint8_t address, uint8_t msg, uint8_t length);
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uint8_t I2C1_Get_Status(void);
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uint8_t I2C1_Buffer_Len(void);
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uint8_t I2C1_Read_Buffer(uint8_t *buffer);
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uint8_t I2C1_Process_Receive(uint8_t);
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#endif
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