📄 csl_i2c.h
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/******************************************************************************\* Copyright (C) 1999-2000 Texas Instruments Incorporated.* All Rights Reserved*------------------------------------------------------------------------------* FILENAME...... csl_i2c.h* DATE CREATED.. 06/11/1999 * LAST MODIFIED. 13/03/2002 - added I2C_outOfReset()\******************************************************************************/#ifndef _CSL_I2C_H_#define _CSL_I2C_H_#include <csl_chip.h>#include <csl_irq.h>#include <csl_i2chal.h>#if (I2C_SUPPORT)/******************************************************************************\* scope and inline control macros\******************************************************************************/#ifdef __cplusplus#define CSLAPI extern "C" far#else#define CSLAPI extern far#endif#undef USEDEFS#undef IDECL#undef IDEF#ifdef _I2C_MOD_ #define IDECL CSLAPI #define USEDEFS #define IDEF#else #ifdef _INLINE #define IDECL static inline #define USEDEFS #define IDEF static inline #else #define IDECL CSLAPI #endif#endif/******************************************************************************\* global macro declarations\******************************************************************************//* I2C_open() flags */#define I2C_OPEN_RESET (0x00000001)/* device identifiers for I2C_open() */#if (CHIP_6713 || CHIP_DA610)#define I2C_DEV0 (0)#define I2C_DEV1 (1)#endif#if (CHIP_DM642 | CHIP_6412)#define I2C_DEV0 (0)#endif/* device identifiers for I2C_open() */#if (CHIP_6713 || CHIP_DA610)#define I2C_PORT0 I2C_DEV0#define I2C_PORT1 I2C_DEV1#endif#if (CHIP_DM642 | CHIP_6412)#define I2C_PORT0 I2C_DEV0#endif/* error codes */#define I2C_ERR_ALLOC (0x00000000) #define I2C_ERR_INVALID_HANDLE (0x00000001) #define I2C_EVT_AL 0x01 // Arbitration win/lose#define I2C_EVT_NACK 0x02 // No acknowledgement #define I2C_EVT_ARDY 0x03 // register access ready#define I2C_EVT_ICRRDY 0x04 // receive data ready#define I2C_EVT_ICXRDY 0x05 // transmit data ready/******************************************************************************\* global typedef declarations\******************************************************************************//* device handle object */typedef struct { Uint32 allocated; Uint32 eventId; volatile Uint32 *baseAddr; Uint32 i2cdrrAddr; Uint32 i2cdxrAddr;} I2C_Obj, *I2C_Handle;/* device configuration structure */typedef struct { Uint32 i2coar; Uint32 i2cimr; Uint32 i2cclkl; Uint32 i2cclkh; Uint32 i2ccnt; Uint32 i2csar; Uint32 i2cmdr; Uint32 i2cpsc;} I2C_Config;typedef struct { Uint32 addrmode; /* 7 or 10 bit address mode */ Uint32 ownaddr; /* don't care if master */ Uint32 sysinclock; /* clkout value (Mhz) */ Uint32 rate; /* a number between 10 and 400 in kbps*/ Uint32 bitbyte; /* number of bits/byte to be received or transmitted */ Uint32 dlb; /* digital loopback mode */ Uint32 free; /* free mode */} I2C_Init;/******************************************************************************\* global variable declarations\******************************************************************************/static Uint32 I2C_isrDispatchTable[6];/******************************************************************************\* global function declarations\******************************************************************************/CSLAPI void I2C_reset(I2C_Handle hI2c);CSLAPI void I2C_resetAll();CSLAPI I2C_Handle I2C_open(int devNum, Uint32 flags);CSLAPI void I2C_close(I2C_Handle hI2c);//CSLAPI void I2C_init(I2C_Init *init);/******************************************************************************\* inline function declarations\******************************************************************************/IDECL Uint32 I2C_getXmtAddr(I2C_Handle hI2c);IDECL Uint32 I2C_getRcvAddr(I2C_Handle hI2c);IDECL Uint32 I2C_getEventId(I2C_Handle hI2c);IDECL Uint32 I2C_rfull(I2C_Handle hI2c);IDECL Uint32 I2C_rrdy(I2C_Handle hI2c);IDECL Uint32 I2C_xempty(I2C_Handle hI2c);IDECL Uint32 I2C_xrdy(I2C_Handle hI2c);IDECL Uint32 I2C_bb(I2C_Handle hI2c);IDECL void I2C_writeByte(I2C_Handle hI2c, Uint8 val);IDECL Uint8 I2C_readByte(I2C_Handle hI2c);IDECL void I2C_sendStop(I2C_Handle hI2c);IDECL void I2C_start(I2C_Handle hI2c);IDECL void I2C_outOfReset(I2C_Handle hI2c);IDECL Uint32 I2C_intClear(I2C_Handle hI2c);IDECL void I2C_intClearAll(I2C_Handle hI2c);IDECL void I2C_intEvtEnable(I2C_Handle hI2c,Uint32 maskFlag);IDECL void I2C_intEvtDisable(I2C_Handle hI2c,Uint32 unmaskFlag);IDECL void I2C_config(I2C_Handle hI2c,I2C_Config *config);IDECL void I2C_configArgs(I2C_Handle hI2c,Uint32 i2coar,Uint32 i2cimr, Uint32 i2cclkl,Uint32 i2cclkh,Uint32 i2ccnt, Uint32 i2csar,Uint32 i2cmdr,Uint32 i2cpsc);IDECL void I2C_getConfig(I2C_Handle hI2c,I2C_Config *config);/******************************************************************************\* inline function definitions\******************************************************************************/#ifdef USEDEFS/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_getXmtAddr(I2C_Handle hI2c) { return (Uint32)(hI2c->i2cdxrAddr);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_getRcvAddr(I2C_Handle hI2c) { return (Uint32)(hI2c->i2cdrrAddr);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_getEventId(I2C_Handle hI2c) { return (hI2c->eventId);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_rfull(I2C_Handle hI2c){ return I2C_FGETH(hI2c,I2CSTR,RSFULL);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_rrdy(I2C_Handle hI2c){ return I2C_FGETH(hI2c,I2CSTR,ICRRDY);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_xempty(I2C_Handle hI2c){ return I2C_FGETH(hI2c,I2CSTR,XSMT);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_xrdy(I2C_Handle hI2c){ return I2C_FGETH(hI2c,I2CSTR,ICXRDY);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_bb(I2C_Handle hI2c){ return I2C_FGETH(hI2c,I2CSTR,BB);}/*----------------------------------------------------------------------------*/IDEF Uint8 I2C_readByte(I2C_Handle hI2c) { return (*(volatile Uint8 *)(hI2c->i2cdrrAddr));}/*----------------------------------------------------------------------------*/IDEF void I2C_writeByte(I2C_Handle hI2c, Uint8 val) { (*(volatile Uint8 *)(hI2c->i2cdxrAddr)) = val;}/*----------------------------------------------------------------------------*/IDEF void I2C_sendStop(I2C_Handle hI2c){ I2C_FSETSH(hI2c,I2CMDR,STP,STOP);}/*----------------------------------------------------------------------------*/IDEF void I2C_start(I2C_Handle hI2c){ I2C_FSETSH(hI2c,I2CMDR,STT,START);}/*----------------------------------------------------------------------------*/IDEF void I2C_outOfReset(I2C_Handle hI2c){ I2C_FSETSH(hI2c,I2CMDR,IRS,NRST);}/*----------------------------------------------------------------------------*/IDEF Uint32 I2C_intClear(I2C_Handle hI2c){ return I2C_RGETH(hI2c,I2CIVR);}/*----------------------------------------------------------------------------*/IDEF void I2C_intClearAll(I2C_Handle hI2c){ Uint32 x=I2C_RGETH(hI2c,I2CIVR); while(x != 0) { x=I2C_RGETH(hI2c,I2CIVR); }}/*----------------------------------------------------------------------------*/IDEF void I2C_intEvtEnable(I2C_Handle hI2c,Uint32 maskFlag){ Uint32 newMask; newMask = I2C_RGETH(hI2c,I2CIMR) | maskFlag; I2C_RSETH(hI2c,I2CIMR,newMask); IRQ_enable(hI2c->eventId);}/*----------------------------------------------------------------------------*/IDEF void I2C_intEvtDisable(I2C_Handle hI2c,Uint32 unmaskFlag){ Uint32 newMask; newMask = I2C_RGETH(hI2c,I2CIMR) & unmaskFlag; I2C_RSETH(hI2c,I2CIMR,newMask); if(!(I2C_RGETH(hI2c,I2CIMR) & 0x0000001F)) IRQ_disable(hI2c->eventId);}/*----------------------------------------------------------------------------*/IDEF void I2C_config(I2C_Handle hI2c, I2C_Config *config) { Uint32 gie; volatile Uint32 *base = (volatile Uint32 *)(hI2c->baseAddr); register int x0,x1,x2,x3,x4,x5,x6,x7; gie = IRQ_globalDisable(); /* the compiler generates more efficient code if the loads */ /* and stores are grouped together rather than intermixed */ x0 = config->i2coar; x1 = config->i2cimr; x2 = config->i2cclkl; x3 = config->i2cclkh; x4 = config->i2ccnt; x5 = config->i2csar; x6 = config->i2cpsc; x7 = config->i2cmdr; base[_I2C_I2COAR_OFFSET] = x0; base[_I2C_I2CIMR_OFFSET] = x1; base[_I2C_I2CCLKL_OFFSET] = x2; base[_I2C_I2CCLKH_OFFSET] = x3; base[_I2C_I2CCNT_OFFSET] = x4; base[_I2C_I2CSAR_OFFSET] = x5; base[_I2C_I2CPSC_OFFSET] = x6; base[_I2C_I2CMDR_OFFSET] = x7; IRQ_globalRestore(gie);}/*----------------------------------------------------------------------------*/IDEF void I2C_configArgs(I2C_Handle hI2c,Uint32 i2coar,Uint32 i2cimr,Uint32 i2cclkl,Uint32 i2cclkh,Uint32 i2ccnt,Uint32 i2csar,Uint32 i2cmdr,Uint32 i2cpsc){ Uint32 gie; volatile Uint32 *base = (volatile Uint32 *)(hI2c->baseAddr); gie = IRQ_globalDisable(); base[_I2C_I2COAR_OFFSET] = i2coar; base[_I2C_I2CIMR_OFFSET] = i2cimr; base[_I2C_I2CCLKL_OFFSET] = i2cclkl; base[_I2C_I2CCLKH_OFFSET] = i2cclkh; base[_I2C_I2CCNT_OFFSET] = i2ccnt; base[_I2C_I2CSAR_OFFSET] = i2csar; base[_I2C_I2CPSC_OFFSET] = i2cpsc; base[_I2C_I2CMDR_OFFSET] = i2cmdr; IRQ_globalRestore(gie);}/*----------------------------------------------------------------------------*/IDEF void I2C_getConfig(I2C_Handle hI2c, I2C_Config *config) { Uint32 gie; volatile Uint32 *base = (volatile Uint32 *)(hI2c->baseAddr); register int x0,x1,x2,x3,x4,x5,x6,x7; gie = IRQ_globalDisable(); /* the compiler generates more efficient code if the loads */ /* and stores are grouped together rather than intermixed */ x0 = base[_I2C_I2COAR_OFFSET]; x1 = base[_I2C_I2CIMR_OFFSET]; x2 = base[_I2C_I2CCLKL_OFFSET]; x3 = base[_I2C_I2CCLKH_OFFSET]; x4 = base[_I2C_I2CCNT_OFFSET]; x5 = base[_I2C_I2CSAR_OFFSET]; x6 = base[_I2C_I2CMDR_OFFSET]; x7 = base[_I2C_I2CPSC_OFFSET]; config->i2coar = x0; config->i2cimr = x1; config->i2cclkl = x2; config->i2cclkh = x3; config->i2ccnt = x4; config->i2csar = x5; config->i2cmdr = x6; config->i2cpsc = x7; IRQ_globalRestore(gie);}/*----------------------------------------------------------------------------*/#endif /* USEDEFS */#endif /* I2C_SUPPORT */#endif /* _CSL_I2C_H_ *//******************************************************************************\* End of csl_i2c.h\******************************************************************************/
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