SmartPDCode/truing_control/STS_FreeRTOS/HARDWARE/Key/Key.c

/*********************************************************************************************************
* Module   : key.c
* Abstract : key modules,key be used to determing modebus address and It content interfaces of scankey to read! 
* Version  : 1.0.0
* Author   : Leopul(COPYRIGHT 2025 - 2027 Leopul. All rights reserved.)
* Complete : 2025-02-16
* Content  : None
* Note     : None
*********************************************************************************************************/

#include "Key.h"
#include "gd32f30x_libopt.h"



#define KEY_NAME_MAX 	5

#define KEY_RCU   	RCU_GPIOE
#define KEY_IO			GPIOE


#define KEY_ON 0
#define KEY_OFF 1



#define KEY1 GPIO_PIN_2
#define KEY2 GPIO_PIN_3
#define KEY3 GPIO_PIN_4
#define KEY4 GPIO_PIN_5
#define KEY5 	GPIO_PIN_6


static  unsigned char  s_arrKeyDownLevel[KEY_NAME_MAX];     


static  void  ConfigKeyGPIO(void); 

static  void  ConfigKeyGPIO(void)
{
  rcu_periph_clock_enable(KEY_RCU); //ʹÄÜGPIOAµÄʱÖÓ
	gpio_init(KEY_IO,GPIO_MODE_IPU,GPIO_OSPEED_50MHZ,KEY1|KEY2|KEY3|KEY4|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_IO,KEY1);
	s_arrKeyDownLevel[1]=ScanKey(KEY_IO,KEY2);
	s_arrKeyDownLevel[2]=ScanKey(KEY_IO,KEY3);
	s_arrKeyDownLevel[3]=ScanKey(KEY_IO,KEY4);
	s_arrKeyDownLevel[4]=ScanKey(KEY_IO,KEY5);

	SlaveAddress=(~((s_arrKeyDownLevel[4]<<4)|(s_arrKeyDownLevel[3]<<3)|(s_arrKeyDownLevel[2]<<2)|(s_arrKeyDownLevel[1]<<1)|s_arrKeyDownLevel[0]))&0x1f;
	return SlaveAddress;
}