Define both method styles in C. Alias methods aren't avaialble when top level including

Author: vickash

mrblib/gpio.rb

@@ -2,14 +2,6 @@ module ESP32
   module GPIO
     include Constants
 
-    class << self
-      alias :pinMode      :pin_mode      
-      alias :digitalWrite :digital_write 
-      alias :digitalRead  :digital_read  
-      alias :analogWrite  :analog_write  
-      alias :analogRead   :analog_read   
-    end  
-  
     class Pin
       PIN_MODE = {
         pullup:   ESP32::GPIO::INPUT_PULLUP,

src/gpio.c

@@ -102,11 +102,19 @@ mrb_mruby_esp32_gpio_gem_init(mrb_state* mrb)
   esp32 = mrb_define_module(mrb, "ESP32");
 
   gpio = mrb_define_module_under(mrb, esp32, "GPIO");
+  // Ruby-style snake case methods.
   mrb_define_module_function(mrb, gpio, "pin_mode", mrb_esp32_gpio_pin_mode, MRB_ARGS_REQ(2));
   mrb_define_module_function(mrb, gpio, "digital_write", mrb_esp32_gpio_digital_write, MRB_ARGS_REQ(2));
   mrb_define_module_function(mrb, gpio, "digital_read", mrb_esp32_gpio_digital_read, MRB_ARGS_REQ(1));
   mrb_define_module_function(mrb, gpio, "analog_write", mrb_esp32_gpio_analog_write, MRB_ARGS_REQ(2));
   mrb_define_module_function(mrb, gpio, "analog_read", mrb_esp32_gpio_analog_read, MRB_ARGS_REQ(1));
+
+  // Arduino-style camel case methods.
+  mrb_define_module_function(mrb, gpio, "pinMode", mrb_esp32_gpio_pin_mode, MRB_ARGS_REQ(2));
+  mrb_define_module_function(mrb, gpio, "digitalWrite", mrb_esp32_gpio_digital_write, MRB_ARGS_REQ(2));
+  mrb_define_module_function(mrb, gpio, "digitalRead", mrb_esp32_gpio_digital_write, MRB_ARGS_REQ(2));
+  mrb_define_module_function(mrb, gpio, "analogWrite", mrb_esp32_gpio_analog_write, MRB_ARGS_REQ(2));
+  mrb_define_module_function(mrb, gpio, "analogRead", mrb_esp32_gpio_analog_read, MRB_ARGS_REQ(1));
 
   adc1_config_width(ADC_BITWIDTH_12);