Define methods in C as snake case instead of camel case

Author: vickash

mrblib/gpio.rb

@@ -3,11 +3,11 @@ module GPIO
     include Constants
 
     class << self
-      alias :digital_write :digitalWrite   
-      alias :digital_read  :digitalRead
-      alias :analog_write  :analogWrite   
-      alias :analog_read   :analogRead    
-      alias :pin_mode      :pinMode 
+      alias :pinMode      :pin_mode      
+      alias :digitalWrite :digital_write 
+      alias :digitalRead  :digital_read  
+      alias :analogWrite  :analog_write  
+      alias :analogRead   :analog_read   
     end  
 
     class Pin

src/gpio.c

@@ -102,11 +102,11 @@ mrb_mruby_esp32_gpio_gem_init(mrb_state* mrb)
   esp32 = mrb_define_module(mrb, "ESP32");
 
   gpio = mrb_define_module_under(mrb, esp32, "GPIO");
-  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_read, MRB_ARGS_REQ(1));
-  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));
+  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));
 
   adc1_config_width(ADC_BITWIDTH_12);