i2c_readbyte
data = i2c_readbyte(0);
id = i2c_readbyte(si->ps.tv_encoder.bus, true);
buf[cnt] = i2c_readbyte(BusNR, buf[cnt]);
uint8 i2c_readbyte(uint8 BusNR, bool Ack);
unsigned char i2c_readbyte(int ack_required);
data = i2c_readbyte(0);
unsigned char i2c_readbyte(int ack_required);
data = i2c_readbyte(0);
if (i2c_readbyte(bus, bytes) != B_OK) { // timeout
static status_t i2c_readbyte(i2c_bus *bus, uint8 *pbyte);