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newiodelay();//delay
newiodelay();//delay
outportb(SMBUS_PORT + 2, 0x48);//
SMB_BASE + 2. 0x48 means starting byte data transmission
newiodelay();//delay
newiodelay();//delay
for (i = 0; i <= 0x100; i++)
{
newiodelay();//longer delay
}
chk_smbus_ready();//Whether SMBUS is ready
return(inportb(SMBUS_PORT + 5));// Byte value read from SMB_BASE + 5
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
void
smbus_write_byte(BYTE addr, BYTE offset, BYTE value)
// Write SMBUS Register byte value. Write one byte value each time. addr is slave
address (such as 0x40), and offset is register offset.
{
int
i;
outportb(SMBUS_PORT + 4, addr);// Write slave address to SMB_BASE +
4 (When writing, slave address bit 0 should be set as 0)
moredelay();//longer delay
moredelay();//longer delay
chk_smbus_ready();//Whether SMBUS is ready
outportb(SMBUS_PORT + 3, offset);// Write register offset to SMB_BASE +
3
moredelay();//longer delay
moredelay();//longer delay
outportb(SMBUS_PORT + 5, value);//Write data value to SMB_BASE + 5
moredelay();//longer delay
moredelay();//longer delay
outportb(SMBUS_PORT + 2, 0x48);//
SMB_BASE + 2.. 0x48 means starting byte data transmission.
moredelay();//longer delay
moredelay();//longer delay
for (i = 0; i <= 0x100; i++)
Write
SMBUS
Write
SMBUS
55
command
to
command
to
ITA-3630 User Manual
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