void fs20_send(uint8_t fht, uint16_t housecode, uint8_t address, uint8_t command, uint8_t command2)
{
for (uint8_t i = 0; i < 3; i++)
{
fs20_send_sync();
/* magic constant 6 from fs20 protocol definition, 0x0c from fht protocol definition... */
uint8_t sum = fht ? 0x0C : 0x06;
fs20_send_byte(HI8(housecode));
sum += HI8(housecode);
fs20_send_byte(LO8(housecode));
sum += LO8(housecode);
fs20_send_byte(address);
sum += address;
fs20_send_byte(command);
sum += command;
if ( command & 0x20 )
{
fs20_send_byte(command2);
sum += command2;
}
fs20_send_byte(sum);
fs20_send_zero();
_delay_loop_2(FS20_DELAY_CMD);
}
}
void fs20_send_bit(uint8_t bit)
{
if (bit > 0)
fs20_send_one();
else
fs20_send_zero();
}
void fs20_send_sync(void)
{
for (uint8_t i = 0; i < 12; i++)
fs20_send_zero();
fs20_send_one();
}
void fs20_send(uint16_t housecode, uint8_t address, uint8_t command)
{
for (uint8_t i = 0; i < 3; i++) {
fs20_send_sync();
uint8_t sum = 6; /* magic constant 6 from fs20 protocol definition... */
fs20_send_byte(HI8(housecode));
sum += HI8(housecode);
fs20_send_byte(LO8(housecode));
sum += LO8(housecode);
fs20_send_byte(address);
sum += address;
fs20_send_byte(command);
sum += command;
fs20_send_byte(sum);
fs20_send_zero();
_delay_loop_2(FS20_DELAY_CMD);
}
}