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149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
4 weeks ago
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//###########################################################################
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//
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// FILE: DSP2833x_I2cExample.h
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//
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// TITLE: 2833x I2C Example Code Definitions.
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//
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//###########################################################################
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// $TI Release: F2833x/F2823x Header Files and Peripheral Examples V142 $
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// $Release Date: November 1, 2016 $
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// $Copyright: Copyright (C) 2007-2016 Texas Instruments Incorporated -
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// http://www.ti.com/ ALL RIGHTS RESERVED $
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//###########################################################################
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#ifndef DSP2833x_I2C_DEFINES_H
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#define DSP2833x_I2C_DEFINES_H
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//
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// Defines
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//
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//
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// Error Messages
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//
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#define I2C_ERROR 0xFFFF
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#define I2C_ARB_LOST_ERROR 0x0001
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#define I2C_NACK_ERROR 0x0002
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#define I2C_BUS_BUSY_ERROR 0x1000
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#define I2C_STP_NOT_READY_ERROR 0x5555
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#define I2C_NO_FLAGS 0xAAAA
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#define I2C_SUCCESS 0x0000
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//
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// Clear Status Flags
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//
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#define I2C_CLR_AL_BIT 0x0001
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#define I2C_CLR_NACK_BIT 0x0002
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#define I2C_CLR_ARDY_BIT 0x0004
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#define I2C_CLR_RRDY_BIT 0x0008
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#define I2C_CLR_SCD_BIT 0x0020
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//
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// Interrupt Source Messages
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//
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#define I2C_NO_ISRC 0x0000
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#define I2C_ARB_ISRC 0x0001
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#define I2C_NACK_ISRC 0x0002
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#define I2C_ARDY_ISRC 0x0003
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#define I2C_RX_ISRC 0x0004
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#define I2C_TX_ISRC 0x0005
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#define I2C_SCD_ISRC 0x0006
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#define I2C_AAS_ISRC 0x0007
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//
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// I2CMSG structure defines
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//
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#define I2C_NO_STOP 0
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#define I2C_YES_STOP 1
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#define I2C_RECEIVE 0
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#define I2C_TRANSMIT 1
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#define I2C_MAX_BUFFER_SIZE 16
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//
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// I2C Slave State defines
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//
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#define I2C_NOTSLAVE 0
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#define I2C_ADDR_AS_SLAVE 1
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#define I2C_ST_MSG_READY 2
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//
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// I2C Slave Receiver messages defines
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//
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#define I2C_SND_MSG1 1
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#define I2C_SND_MSG2 2
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//
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// I2C State defines
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//
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#define I2C_IDLE 0
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#define I2C_SLAVE_RECEIVER 1
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#define I2C_SLAVE_TRANSMITTER 2
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#define I2C_MASTER_RECEIVER 3
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#define I2C_MASTER_TRANSMITTER 4
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//
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// I2C Message Commands for I2CMSG struct
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//
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#define I2C_MSGSTAT_INACTIVE 0x0000
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#define I2C_MSGSTAT_SEND_WITHSTOP 0x0010
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#define I2C_MSGSTAT_WRITE_BUSY 0x0011
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#define I2C_MSGSTAT_SEND_NOSTOP 0x0020
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#define I2C_MSGSTAT_SEND_NOSTOP_BUSY 0x0021
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#define I2C_MSGSTAT_RESTART 0x0022
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#define I2C_MSGSTAT_READ_BUSY 0x0023
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//
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// Generic defines
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//
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#define I2C_TRUE 1
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#define I2C_FALSE 0
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#define I2C_YES 1
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#define I2C_NO 0
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#define I2C_DUMMY_BYTE 0
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//
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// Structures
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//
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//
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// I2C Message Structure
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//
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struct I2CMSG
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{
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Uint16 MsgStatus; // Word stating what state msg is in:
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// I2C_MSGCMD_INACTIVE = do not send msg
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// I2C_MSGCMD_BUSY = msg start has been sent,
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// awaiting stop
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// I2C_MSGCMD_SEND_WITHSTOP = command to send
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// master trans msg complete with a stop bit
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// I2C_MSGCMD_SEND_NOSTOP = command to send
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// master trans msg without the stop bit
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// I2C_MSGCMD_RESTART = command to send a restart
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// as a master receiver with a stop bit
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Uint16 SlaveAddress; // I2C address of slave msg is intended for
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Uint16 NumOfBytes; // Num of valid bytes in (or to be put in MsgBuffer)
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//
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// EEPROM address of data associated with msg (high byte)
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//
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Uint16 MemoryHighAddr;
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//
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// EEPROM address of data associated with msg (low byte)
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//
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Uint16 MemoryLowAddr;
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//
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// Array holding msg data - max that MAX_BUFFER_SIZE can be is 16 due to
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// the FIFO's
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Uint16 MsgBuffer[I2C_MAX_BUFFER_SIZE];
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};
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#endif // end of DSP2833x_I2C_DEFINES_H definition
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//
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// End of file
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//
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