emi2c.h

来自「sigma_designs的tuner驱动」· C头文件 代码 · 共 45 行

/*
 * emi2c.h
 *
 * requires types.h before this
 */
 
//#ifndef EM_TYPES
//#error em_types.h must be included before emi2c.h
//#endif
 
 
/*---------configuration-----------------*/
typedef struct tagEMI2C_CONFIG {
	RMvoid* pGBus;
	RMuint32 RegBase;
	RMuint8 PIO_Clock;
	RMuint8 PIO_Data;
	
	RMuint32 AdditionalDelay;
	RMuint32 SclHiTimeout;
	RMuint32 uFlags;
} EMI2C_CONFIG;
#define DEFAULT_SCL_HI_TIMEOUT		25
/* 1 us = 27 loops
 * Adjusted Delay = (27 loops * DelayMultiplier) / DELAY_DIVIDER
 */
//#define DELAY_DIVIDER			0x10000
//#define EMI2C_FLAG_STOPONSTART		0x04

/*------------------API-------------------*/
RMstatus emi2c_start(EMI2C_CONFIG *pC);
RMstatus emi2c_stop(EMI2C_CONFIG *pC);
RMstatus emi2c_sendbyte(EMI2C_CONFIG *pC, RMuint8 uData, RMuint8 *pNack);

#define EMI2C_SEND_NACK			0x10000
#define EMI2C_SEND_NACK_IF_MISMATCH	0x20000
#define EMI2C_SEND_NACK_COMPARE_DATA	0x000FF
RMstatus emi2c_readbyte(EMI2C_CONFIG *pC, RMuint8* pData, RMuint32 nackConfiguration);

/*-------------High Level API-------------*/
RMstatus emi2c_write_subaddress(EMI2C_CONFIG* pC, RMuint8 uSlaveAddress, RMuint8 uSubAddress, RMuint8 *pData, RMuint32 uByteCount);
#define EMI2C_RD_SUB_STOPONRESTART	0x100000
#define EMI2C_RD_SUB_NONACKLASTBYTE	0x200000
RMstatus emi2c_read_subaddress(EMI2C_CONFIG* pC, RMuint8 uSlaveAddress, RMuint8 uSubAddress, RMuint8 *pData, RMuint32 *pByteCount, RMuint32 uFlags);