int main() {
struct ev_loop *loop;
ev_io ss_watcher;
int ss;
ss = setup_ss();
loop = ev_default_loop(EVBACKEND_EPOLL);
ev_io_init(&ss_watcher, ss_cb, ss, EV_READ);
ev_io_start(loop, &ss_watcher);
ev_loop(loop, 0);
if (close(ss) < 0) die("close");
return 0;
}
MCP23S17::MCP23S17(uint8_t slave_select_pin, byte aaa_hw_addr)
{
// Set the aaa hardware address for this chip by tying the
// MCP23S17's pins (A0, A1, and A2) to either 5v or GND.
setup_ss(slave_select_pin);
// We enable HAEN on all connected devices before we can address them individually
setup_device(0x00);
write_addr(IOCON, read_addr(IOCON)|HAEN);
// Remember the hardware address for this chip
setup_device(aaa_hw_addr);
}
MCP23S17::MCP23S17(uint8_t slave_select_pin)
{
setup_ss(slave_select_pin);
setup_device(0x00);
}
MCP4261::MCP4261(uint8_t slave_select_pin, float rAB_ohms, float rW_ohms)
{
setup_ss(slave_select_pin);
setup_resistance(rAB_ohms, rW_ohms);
}
