int main(void) {
// Create IP connection
IPConnection ipcon;
ipcon_create(&ipcon);
// Create device object
LCD20x4 lcd;
lcd_20x4_create(&lcd, UID, &ipcon);
// Connect to brickd
if(ipcon_connect(&ipcon, HOST, PORT) < 0) {
fprintf(stderr, "Could not connect\n");
return 1;
}
// Don't use device before ipcon is connected
// Turn backlight on
lcd_20x4_backlight_on(&lcd);
// Write "Hello World"
lcd_20x4_write_line(&lcd, 0, 0, "Hello World");
printf("Press key to exit\n");
getchar();
lcd_20x4_destroy(&lcd);
ipcon_destroy(&ipcon); // Calls ipcon_disconnect internally
return 0;
}
static int tinker_lcd20x4_backlight_on(lua_State* L) {
struct tinker_lcd20x4 *tlcd = luaL_checkudata(L, 1, TINKER_LCD20x4_META);
lcd_20x4_backlight_on(&tlcd->lcd);
return 0;
}