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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [drivers/] [LuminaryMicro/] [i2c.h] - Rev 867
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//***************************************************************************** // // i2c.h - Prototypes for the I2C Driver. // // Copyright (c) 2005-2008 Luminary Micro, Inc. All rights reserved. // // Software License Agreement // // Luminary Micro, Inc. (LMI) is supplying this software for use solely and // exclusively on LMI's microcontroller products. // // The software is owned by LMI and/or its suppliers, and is protected under // applicable copyright laws. All rights are reserved. You may not combine // this software with "viral" open-source software in order to form a larger // program. Any use in violation of the foregoing restrictions may subject // the user to criminal sanctions under applicable laws, as well as to civil // liability for the breach of the terms and conditions of this license. // // THIS SOFTWARE IS PROVIDED "AS IS". NO WARRANTIES, WHETHER EXPRESS, IMPLIED // OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. // LMI SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR // CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER. // // This is part of revision 2523 of the Stellaris Peripheral Driver Library. // //***************************************************************************** #ifndef __I2C_H__ #define __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_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 0x00000005 //***************************************************************************** // // 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 //***************************************************************************** // // 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 //***************************************************************************** // // Miscellaneous I2C driver definitions. // //***************************************************************************** #define I2C_MASTER_MAX_RETRIES 1000 // Number of retries //***************************************************************************** // // Prototypes for the APIs. // //***************************************************************************** extern void I2CIntRegister(unsigned long ulBase, void(fnHandler)(void)); extern void I2CIntUnregister(unsigned long ulBase); extern tBoolean I2CMasterBusBusy(unsigned long ulBase); extern tBoolean I2CMasterBusy(unsigned long ulBase); extern void I2CMasterControl(unsigned long ulBase, unsigned long ulCmd); extern unsigned long I2CMasterDataGet(unsigned long ulBase); extern void I2CMasterDataPut(unsigned long ulBase, unsigned char ucData); extern void I2CMasterDisable(unsigned long ulBase); extern void I2CMasterEnable(unsigned long ulBase); extern unsigned long I2CMasterErr(unsigned long ulBase); extern void I2CMasterInitExpClk(unsigned long ulBase, unsigned long ulI2CClk, tBoolean bFast); extern void I2CMasterIntClear(unsigned long ulBase); extern void I2CMasterIntDisable(unsigned long ulBase); extern void I2CMasterIntEnable(unsigned long ulBase); extern tBoolean I2CMasterIntStatus(unsigned long ulBase, tBoolean bMasked); extern void I2CMasterSlaveAddrSet(unsigned long ulBase, unsigned char ucSlaveAddr, tBoolean bReceive); extern unsigned long I2CSlaveDataGet(unsigned long ulBase); extern void I2CSlaveDataPut(unsigned long ulBase, unsigned char ucData); extern void I2CSlaveDisable(unsigned long ulBase); extern void I2CSlaveEnable(unsigned long ulBase); extern void I2CSlaveInit(unsigned long ulBase, unsigned char ucSlaveAddr); extern void I2CSlaveIntClear(unsigned long ulBase); extern void I2CSlaveIntDisable(unsigned long ulBase); extern void I2CSlaveIntEnable(unsigned long ulBase); extern tBoolean I2CSlaveIntStatus(unsigned long ulBase, tBoolean bMasked); extern unsigned long I2CSlaveStatus(unsigned long ulBase); //***************************************************************************** // // Several I2C APIs have been renamed, with the original function name being // deprecated. These defines provide backward compatibility. // //***************************************************************************** #ifndef DEPRECATED #include "sysctl.h" #define I2CMasterInit(a, b) \ I2CMasterInitExpClk(a, SysCtlClockGet(), b) #endif //***************************************************************************** // // Mark the end of the C bindings section for C++ compilers. // //***************************************************************************** #ifdef __cplusplus } #endif #endif // __I2C_H__
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