Silicon Laboratories Stepper Machine Instrukcja Użytkownika Pobierz pdf (Strona 26)

AN428

26 Rev. 0.6

}

//copy FCAL values

I2C_ByteWrite(45, I2C_ByteRead(235));

I2C_ByteWrite(46, I2C_ByteRead(236));

// clear bits 0 and 1 from 47 and

// combine with bits 0 and 1 from 237

reg = (I2C_ByteRead(47) & 0xFC) | (I2C_ByteRead(237) & 3);

I2C_ByteWrite(47, reg);

I2C_ByteWrite(49, I2C_ByteRead(49) | 0x80); // FCAL_OVRD_EN = 1

I2C_ByteWrite(230, 0x00); // OEB_ALL = 0

//------------------------------------------------------------

// wait forever

while(1); //comment this out if the power-down option is used below

// power down the MCU

while(SMB_BUSY); // wait until the I2C transactions are complete

EA = 0; // turn off interrupts

SMB0CF &= ~0x80; // turn off SMBus

RSTSRC = 0x00; // turn off the MCD reset source

PCON = 0x02; // stop the MCU - only a reset will wake it up

}

//-----------------------------------------------------------------------------

// Initialization Routines

//-----------------------------------------------------------------------------

// SMBus_Init

//-----------------------------------------------------------------------------

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Silicon Laboratories Stepper Machine Instrukcja Użytkownika Strona 26