#include "Key.h"
#include "gd32e23x_rcu.h"


static unsigned char  s_arrKeyDownLevel[KEY_NAME_MAX] = {0};      

static  void  ConfigKeyGPIO(void);


static  void  ConfigKeyGPIO(void)
{
  rcu_periph_clock_enable(KEY_A_RCU); 
	rcu_periph_clock_enable(KEY_B_RCU);
	
  
  gpio_mode_set(KEY_B_IO, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, KEY1);   
  gpio_mode_set(KEY_B_IO, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, KEY2);   
  gpio_mode_set(KEY_B_IO, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, KEY3);  
	gpio_mode_set(KEY_B_IO, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, KEY4);   
	gpio_mode_set(KEY_A_IO, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, KEY5);	
	
}


void InitKey(void)
{
  ConfigKeyGPIO();                                                      
}


unsigned char ScanKey(unsigned int gpio_periph,unsigned int pin)
{
	if(gpio_input_bit_get(gpio_periph,pin)==0)
		return KEY_ON;
	else 
		return KEY_OFF;
}

unsigned char ReadKeyValue(void)
{
	static unsigned char  SlaveAddress;
	s_arrKeyDownLevel[0] = ScanKey(KEY_B_IO,KEY1);
	s_arrKeyDownLevel[1] = ScanKey(KEY_B_IO,KEY2);
	s_arrKeyDownLevel[2] = ScanKey(KEY_B_IO,KEY3);
	s_arrKeyDownLevel[3] = ScanKey(KEY_B_IO,KEY4);
	s_arrKeyDownLevel[4] = ScanKey(KEY_A_IO,KEY5);
	SlaveAddress=(~((s_arrKeyDownLevel[0]<<0)|(s_arrKeyDownLevel[1]<<1)|(s_arrKeyDownLevel[2]<<2)|(s_arrKeyDownLevel[3]<<3)|(s_arrKeyDownLevel[4]<<4)))& 0x1f;
	
	return SlaveAddress;
}