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|
//*****************************************************************************
//
// i2c.h
//
// Prototypes for the I2C Driver.
//
// Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//*****************************************************************************
#ifndef __DRIVERLIB_I2C_H__
#define __DRIVERLIB_I2C_H__
//*****************************************************************************
//
// If building with a C++ compiler, make all of the definitions in this header
// have a C binding.
//
//*****************************************************************************
#ifdef __cplusplus
extern "C"
{
#endif
//*****************************************************************************
//
// Defines for the API.
//
//*****************************************************************************
//*****************************************************************************
//
// Interrupt defines.
//
//*****************************************************************************
#define I2C_INT_MASTER 0x00000001
#define I2C_INT_SLAVE 0x00000002
//*****************************************************************************
//
// I2C Master commands.
//
//*****************************************************************************
#define I2C_MASTER_CMD_SINGLE_SEND \
0x00000007
#define I2C_MASTER_CMD_SINGLE_RECEIVE \
0x00000007
#define I2C_MASTER_CMD_BURST_SEND_START \
0x00000003
#define I2C_MASTER_CMD_BURST_SEND_CONT \
0x00000001
#define I2C_MASTER_CMD_BURST_SEND_FINISH \
0x00000005
#define I2C_MASTER_CMD_BURST_SEND_STOP \
0x00000004
#define I2C_MASTER_CMD_BURST_SEND_ERROR_STOP \
0x00000004
#define I2C_MASTER_CMD_BURST_RECEIVE_START \
0x0000000b
#define I2C_MASTER_CMD_BURST_RECEIVE_CONT \
0x00000009
#define I2C_MASTER_CMD_BURST_RECEIVE_FINISH \
0x00000005
#define I2C_MASTER_CMD_BURST_RECEIVE_ERROR_STOP \
0x00000004
#define I2C_MASTER_CMD_QUICK_COMMAND \
0x00000027
#define I2C_MASTER_CMD_HS_MASTER_CODE_SEND \
0x00000013
#define I2C_MASTER_CMD_FIFO_SINGLE_SEND \
0x00000046
#define I2C_MASTER_CMD_FIFO_SINGLE_RECEIVE \
0x00000046
#define I2C_MASTER_CMD_FIFO_BURST_SEND_START \
0x00000042
#define I2C_MASTER_CMD_FIFO_BURST_SEND_CONT \
0x00000040
#define I2C_MASTER_CMD_FIFO_BURST_SEND_FINISH \
0x00000044
#define I2C_MASTER_CMD_FIFO_BURST_SEND_ERROR_STOP \
0x00000004
#define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_START \
0x0000004a
#define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_CONT \
0x00000048
#define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_FINISH \
0x00000044
#define I2C_MASTER_CMD_FIFO_BURST_RECEIVE_ERROR_STOP \
0x00000004
//*****************************************************************************
//
// I2C Master glitch filter configuration.
//
//*****************************************************************************
#define I2C_MASTER_GLITCH_FILTER_DISABLED \
0
#define I2C_MASTER_GLITCH_FILTER_1 \
0x00010000
#define I2C_MASTER_GLITCH_FILTER_2 \
0x00020000
#define I2C_MASTER_GLITCH_FILTER_3 \
0x00030000
#define I2C_MASTER_GLITCH_FILTER_4 \
0x00040000
#define I2C_MASTER_GLITCH_FILTER_8 \
0x00050000
#define I2C_MASTER_GLITCH_FILTER_16 \
0x00060000
#define I2C_MASTER_GLITCH_FILTER_32 \
0x00070000
//*****************************************************************************
//
// I2C Master error status.
//
//*****************************************************************************
#define I2C_MASTER_ERR_NONE 0
#define I2C_MASTER_ERR_ADDR_ACK 0x00000004
#define I2C_MASTER_ERR_DATA_ACK 0x00000008
#define I2C_MASTER_ERR_ARB_LOST 0x00000010
#define I2C_MASTER_ERR_CLK_TOUT 0x00000080
//*****************************************************************************
//
// I2C Slave action requests
//
//*****************************************************************************
#define I2C_SLAVE_ACT_NONE 0
#define I2C_SLAVE_ACT_RREQ 0x00000001 // Master has sent data
#define I2C_SLAVE_ACT_TREQ 0x00000002 // Master has requested data
#define I2C_SLAVE_ACT_RREQ_FBR 0x00000005 // Master has sent first byte
#define I2C_SLAVE_ACT_OWN2SEL 0x00000008 // Master requested secondary slave
#define I2C_SLAVE_ACT_QCMD 0x00000010 // Master has sent a Quick Command
#define I2C_SLAVE_ACT_QCMD_DATA 0x00000020 // Master Quick Command value
//*****************************************************************************
//
// Miscellaneous I2C driver definitions.
//
//*****************************************************************************
#define I2C_MASTER_MAX_RETRIES 1000 // Number of retries
//*****************************************************************************
//
// I2C Master interrupts.
//
//*****************************************************************************
#define I2C_MASTER_INT_RX_FIFO_FULL \
0x00000800 // RX FIFO Full Interrupt
#define I2C_MASTER_INT_TX_FIFO_EMPTY \
0x00000400 // TX FIFO Empty Interrupt
#define I2C_MASTER_INT_RX_FIFO_REQ \
0x00000200 // RX FIFO Request Interrupt
#define I2C_MASTER_INT_TX_FIFO_REQ \
0x00000100 // TX FIFO Request Interrupt
#define I2C_MASTER_INT_ARB_LOST \
0x00000080 // Arb Lost Interrupt
#define I2C_MASTER_INT_STOP 0x00000040 // Stop Condition Interrupt
#define I2C_MASTER_INT_START 0x00000020 // Start Condition Interrupt
#define I2C_MASTER_INT_NACK 0x00000010 // Addr/Data NACK Interrupt
#define I2C_MASTER_INT_TX_DMA_DONE \
0x00000008 // TX DMA Complete Interrupt
#define I2C_MASTER_INT_RX_DMA_DONE \
0x00000004 // RX DMA Complete Interrupt
#define I2C_MASTER_INT_TIMEOUT 0x00000002 // Clock Timeout Interrupt
#define I2C_MASTER_INT_DATA 0x00000001 // Data Interrupt
//*****************************************************************************
//
// I2C Slave interrupts.
//
//*****************************************************************************
#define I2C_SLAVE_INT_RX_FIFO_FULL \
0x00000100 // RX FIFO Full Interrupt
#define I2C_SLAVE_INT_TX_FIFO_EMPTY \
0x00000080 // TX FIFO Empty Interrupt
#define I2C_SLAVE_INT_RX_FIFO_REQ \
0x00000040 // RX FIFO Request Interrupt
#define I2C_SLAVE_INT_TX_FIFO_REQ \
0x00000020 // TX FIFO Request Interrupt
#define I2C_SLAVE_INT_TX_DMA_DONE \
0x00000010 // TX DMA Complete Interrupt
#define I2C_SLAVE_INT_RX_DMA_DONE \
0x00000008 // RX DMA Complete Interrupt
#define I2C_SLAVE_INT_STOP 0x00000004 // Stop Condition Interrupt
#define I2C_SLAVE_INT_START 0x00000002 // Start Condition Interrupt
#define I2C_SLAVE_INT_DATA 0x00000001 // Data Interrupt
//*****************************************************************************
//
// I2C Slave FIFO configuration macros.
//
//*****************************************************************************
#define I2C_SLAVE_TX_FIFO_ENABLE \
0x00000002
#define I2C_SLAVE_RX_FIFO_ENABLE \
0x00000004
//*****************************************************************************
//
// I2C FIFO configuration macros.
//
//*****************************************************************************
#define I2C_FIFO_CFG_TX_MASTER 0x00000000
#define I2C_FIFO_CFG_TX_SLAVE 0x00008000
#define I2C_FIFO_CFG_RX_MASTER 0x00000000
#define I2C_FIFO_CFG_RX_SLAVE 0x80000000
#define I2C_FIFO_CFG_TX_MASTER_DMA \
0x00002000
#define I2C_FIFO_CFG_TX_SLAVE_DMA \
0x0000a000
#define I2C_FIFO_CFG_RX_MASTER_DMA \
0x20000000
#define I2C_FIFO_CFG_RX_SLAVE_DMA \
0xa0000000
#define I2C_FIFO_CFG_TX_NO_TRIG 0x00000000
#define I2C_FIFO_CFG_TX_TRIG_1 0x00000001
#define I2C_FIFO_CFG_TX_TRIG_2 0x00000002
#define I2C_FIFO_CFG_TX_TRIG_3 0x00000003
#define I2C_FIFO_CFG_TX_TRIG_4 0x00000004
#define I2C_FIFO_CFG_TX_TRIG_5 0x00000005
#define I2C_FIFO_CFG_TX_TRIG_6 0x00000006
#define I2C_FIFO_CFG_TX_TRIG_7 0x00000007
#define I2C_FIFO_CFG_TX_TRIG_8 0x00000008
#define I2C_FIFO_CFG_RX_NO_TRIG 0x00000000
#define I2C_FIFO_CFG_RX_TRIG_1 0x00010000
#define I2C_FIFO_CFG_RX_TRIG_2 0x00020000
#define I2C_FIFO_CFG_RX_TRIG_3 0x00030000
#define I2C_FIFO_CFG_RX_TRIG_4 0x00040000
#define I2C_FIFO_CFG_RX_TRIG_5 0x00050000
#define I2C_FIFO_CFG_RX_TRIG_6 0x00060000
#define I2C_FIFO_CFG_RX_TRIG_7 0x00070000
#define I2C_FIFO_CFG_RX_TRIG_8 0x00080000
//*****************************************************************************
//
// I2C FIFO status.
//
//*****************************************************************************
#define I2C_FIFO_RX_BELOW_TRIG_LEVEL \
0x00040000
#define I2C_FIFO_RX_FULL 0x00020000
#define I2C_FIFO_RX_EMPTY 0x00010000
#define I2C_FIFO_TX_BELOW_TRIG_LEVEL \
0x00000004
#define I2C_FIFO_TX_FULL 0x00000002
#define I2C_FIFO_TX_EMPTY 0x00000001
//*****************************************************************************
//
// Prototypes for the APIs.
//
//*****************************************************************************
extern void I2CIntRegister(uint32_t ui32Base, void(pfnHandler)(void));
extern void I2CIntUnregister(uint32_t ui32Base);
extern void I2CTxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config);
extern void I2CTxFIFOFlush(uint32_t ui32Base);
extern void I2CRxFIFOConfigSet(uint32_t ui32Base, uint32_t ui32Config);
extern void I2CRxFIFOFlush(uint32_t ui32Base);
extern uint32_t I2CFIFOStatus(uint32_t ui32Base);
extern void I2CFIFODataPut(uint32_t ui32Base, uint8_t ui8Data);
extern uint32_t I2CFIFODataPutNonBlocking(uint32_t ui32Base,
uint8_t ui8Data);
extern uint32_t I2CFIFODataGet(uint32_t ui32Base);
extern uint32_t I2CFIFODataGetNonBlocking(uint32_t ui32Base,
uint8_t *pui8Data);
extern void I2CMasterBurstLengthSet(uint32_t ui32Base,
uint8_t ui8Length);
extern uint32_t I2CMasterBurstCountGet(uint32_t ui32Base);
extern void I2CMasterGlitchFilterConfigSet(uint32_t ui32Base,
uint32_t ui32Config);
extern void I2CSlaveFIFOEnable(uint32_t ui32Base, uint32_t ui32Config);
extern void I2CSlaveFIFODisable(uint32_t ui32Base);
extern bool I2CMasterBusBusy(uint32_t ui32Base);
extern bool I2CMasterBusy(uint32_t ui32Base);
extern void I2CMasterControl(uint32_t ui32Base, uint32_t ui32Cmd);
extern uint32_t I2CMasterDataGet(uint32_t ui32Base);
extern void I2CMasterDataPut(uint32_t ui32Base, uint8_t ui8Data);
extern void I2CMasterDisable(uint32_t ui32Base);
extern void I2CMasterEnable(uint32_t ui32Base);
extern uint32_t I2CMasterErr(uint32_t ui32Base);
extern void I2CMasterInitExpClk(uint32_t ui32Base, uint32_t ui32SCLFreq);
extern void I2CMasterIntClear(uint32_t ui32Base);
extern void I2CMasterIntDisable(uint32_t ui32Base);
extern void I2CMasterIntEnable(uint32_t ui32Base);
extern bool I2CMasterIntStatus(uint32_t ui32Base, bool bMasked);
extern void I2CMasterIntEnableEx(uint32_t ui32Base,
uint32_t ui32IntFlags);
extern void I2CMasterIntDisableEx(uint32_t ui32Base,
uint32_t ui32IntFlags);
extern uint32_t I2CMasterIntStatusEx(uint32_t ui32Base,
bool bMasked);
extern void I2CMasterIntClearEx(uint32_t ui32Base,
uint32_t ui32IntFlags);
extern void I2CMasterTimeoutSet(uint32_t ui32Base, uint32_t ui32Value);
extern void I2CSlaveACKOverride(uint32_t ui32Base, bool bEnable);
extern void I2CSlaveACKValueSet(uint32_t ui32Base, bool bACK);
extern uint32_t I2CMasterLineStateGet(uint32_t ui32Base);
extern void I2CMasterSlaveAddrSet(uint32_t ui32Base,
uint8_t ui8SlaveAddr,
bool bReceive);
extern uint32_t I2CSlaveDataGet(uint32_t ui32Base);
extern void I2CSlaveDataPut(uint32_t ui32Base, uint8_t ui8Data);
extern void I2CSlaveDisable(uint32_t ui32Base);
extern void I2CSlaveEnable(uint32_t ui32Base);
extern void I2CSlaveInit(uint32_t ui32Base, uint8_t ui8SlaveAddr);
extern void I2CSlaveAddressSet(uint32_t ui32Base, uint8_t ui8AddrNum,
uint8_t ui8SlaveAddr);
extern void I2CSlaveIntClear(uint32_t ui32Base);
extern void I2CSlaveIntDisable(uint32_t ui32Base);
extern void I2CSlaveIntEnable(uint32_t ui32Base);
extern void I2CSlaveIntClearEx(uint32_t ui32Base, uint32_t ui32IntFlags);
extern void I2CSlaveIntDisableEx(uint32_t ui32Base,
uint32_t ui32IntFlags);
extern void I2CSlaveIntEnableEx(uint32_t ui32Base, uint32_t ui32IntFlags);
extern bool I2CSlaveIntStatus(uint32_t ui32Base, bool bMasked);
extern uint32_t I2CSlaveIntStatusEx(uint32_t ui32Base,
bool bMasked);
extern uint32_t I2CSlaveStatus(uint32_t ui32Base);
//*****************************************************************************
//
// Mark the end of the C bindings section for C++ compilers.
//
//*****************************************************************************
#ifdef __cplusplus
}
#endif
#endif // __DRIVERLIB_I2C_H__
|
