void ds18x20_init()
{
//only for DS18B20 (not for DS18S20)
ow_command(COMMAND_WRITE_SP,NULL); // write
ow_byte_write(0x00); //Th
ow_byte_write(0x00); //Tl
ow_byte_write(0x7F); //config
}
u8 ow_2760_copy_data(u8 addr)
{
u8 ret;
ret = ow_reset();
if (ret)
{
return ret;
}
ow_byte_write(OW_CMD_SKIP_ROM);
ow_byte_write(OW_2760_COPY_DATA);
ow_byte_write(addr);
return 0;
}
u8 ow_2760_recall_data(u8 addr)
{
u8 ret;
ret = ow_reset();
if (ret)
{
return ret;
}
ow_byte_write(OW_CMD_SKIP_ROM);
ow_byte_write(OW_2760_RECALL_DATA);
ow_byte_write(addr);
return 0;
}
u8 ow_2760_read_reg(u8 reg, u8 *buf, u8 len)
{
u8 ret;
ret = ow_reset();
if (ret)
{
return ret;
}
ow_byte_write(OW_CMD_SKIP_ROM);
ow_byte_write(OW_2760_READ_REG);
ow_byte_write(reg);
while(len--)
{
*buf++ = ow_byte_write(0xFF);
}
return 0;
}
u8 ow_read_rom(u8 *rombuf)
{
u8 ret;
ret = ow_reset();
if (ret)
{
return ret;
}
ow_byte_write(OW_CMD_READ_ROM);
{
u8 i;
for(i=0; i<8; i++)
{
rombuf[i] = ow_byte_write(0xFF);
}
}
return 0;
}
u8 ow_2760_write_reg(u8 reg, u8 val)
{
u8 ret;
ret = ow_reset();
if (!ret)
{
ow_byte_write(OW_CMD_SKIP_ROM);
ow_byte_write(OW_2760_WRITE_REG);
ow_byte_write(reg);
ow_byte_write(val);
}
#if 0
{
u8 msg[] = {reg, val, ret};
send_msg(BROADCAST_NODE_ID, 0xCA, 3, &msg, 0);
}
#endif
return ret;
}
