參數(shù)資料
型號(hào)： VMX1C1020
廠商： Electronic Theatre Controls, Inc.
英文描述： Versa Mix 8051 Mixed-Signal MCU
中文描述： 反之亦然混合8051混合信號(hào)微控制器
文件頁數(shù)： 56/80頁
文件大小： 3605K
代理商： VMX1C1020
VMX51C1020
_________________________________________________________________________________________________
www.ramtron.com
page 56 of 80
I2CCONFIG = 0x03;
//I2C MASTER MODE NO INTERRUPT
I2CRXTX = 0xA8;
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
I2CRXTX = adrsh;
//SEND 24LC64 ADRSH
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
I2CRXTX = adrsl;
//SEND 24LC64 ADRSL
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
USERFLAGS = 0x00;
//SEND 24LC64 ADRS + write COMMAND
//wait for I2C interface to be idle
while(!I2C_IS_IDLE){USERFLAGS = I2CIRQSTAT;}
I2CCONFIG &= 0xFD;
//set Master Rx Stop, only 1 byte to receive
I2CCONFIG |= 0x02;
I2CRXTX = 0xA9;
//----------------------------------------------------------------//
// EEWRITE - EEPROM Random WRITE //
//----------------------------------------------------------------//
void eewrite(idata unsigned char adrsh, idata unsigned char adrsl, unsigned char
eedata)
{
idata unsigned char x;
I2CCONFIG = 0x01;
//I2C MASTER MODE NO INTERRUPT
I2CRXTX = 0xA8;
//SEND EEPROM ADRS + READ
//COMMAND
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
I2CRXTX = adrsh;
//SEND ADRSH
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
I2CRXTX = adrsl;
//SEND ADRSL
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
I2CRXTX = eedata;
//SEND 24LC64 DATA and wait
//for I2C bus IDLE
USERFLAGS = 0x00;
while(!I2C_IS_IDLE){USERFLAGS = I2CIRQSTAT;}
///--Wait Write operation to end
I2CCONFIG = 0x01;
//I2C Master Mode no Interrupt
do{
I2CRXTX = 0xA8;
//Send 24LC64 Adrs +read Command
USERFLAGS = 0x00;
while(!I2C_TX_EMPTY){USERFLAGS = I2CIRQSTAT;}
USERFLAGS = I2CIRQSTAT;
}while(I2C_NO_ACK);
delay1ms(5);
//5ms delay for EEPROM write
}// End of EEPROM Write
// Chip ID read
USERFLAGS = 0x00;
while(!I2C_RX_AVAIL){USERFLAGS = I2CIRQSTAT;}
readvalue = I2CRXTX;
USERFLAGS = 0x00;
while(!I2C_IS_IDLE){USERFLAGS = I2CIRQSTAT;}
//Wait for I2C IDLE
return
readvalue;
}//End of EEREAD
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