40 lines
915 B
C
40 lines
915 B
C
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#ifndef _TWI_IO_H
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#define _TWI_IO_H
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//#define TWI_IO_OPERATE
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#ifdef TWI_IO_OPERATE
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//Define For I2C Driver
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#define AFE_CHIP_ID (0x1B<<1) //AFE_ID
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#define TRY_TIMES 5
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#define RTC_REG_STATUS 0x07
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#define SDA_BIT 0x10
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#define SCL_BIT 0x20
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#define SDA P0_4
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#define SCL P0_5
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#define TWI_CLK_OUT P0CR |= SCL_BIT;
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#define TWI_CLK_IN P0CR &= ~SCL_BIT;
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#define TWI_CLK_HIGH TWI_CLK_IN; SCL = 1;
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#define TWI_CLK_LOW TWI_CLK_OUT; SCL = 0;
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#define TWI_DAT_OUT P0CR |= SDA_BIT;
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#define TWI_DAT_IN P0CR &= ~SDA_BIT;
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#define TWI_DAT_HIGH TWI_DAT_IN; SDA = 1;
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#define TWI_DAT_LOW TWI_DAT_OUT; SDA = 0;
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#define TWI_RD_DAT SDA
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#define TWI_RD_CLK SCL
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extern void TwiInit(void);
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extern BOOL TwiRead(U8 SlaveID, U16 RdAddr, U8 Length, U8 xdata *RdBuf);
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extern BOOL TwiWrite(U8 SlaveID, U16 WrAddr, U8 Length, U8 xdata *WrBuf);
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extern U8 CRC8cal(U8 *p, U8 counter);
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#endif
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#endif
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