/*******************************************************************************
* Include files
******************************************************************************/
#include "hc32_ddl.h"
/*******************************************************************************
* Local type definitions ('typedef')
******************************************************************************/
/*******************************************************************************
* Local pre-processor symbols/macros ('#define')
******************************************************************************/
/* KEYOUT port, pin definition */
#define KEYOUT_PORT (PortA)
#define KEYOUT0_PIN (Pin04)
#define KEYOUT1_PIN (Pin05)
#define KEYOUT2_PIN (Pin06)
/* KEYIN port, pin definition */
#define KEYIN_PORT (PortD)
#define KEYIN0_PIN (Pin12)
#define KEYIN1_PIN (Pin13)
#define KEYIN2_PIN (Pin14)
/* LED0 Port/Pin definition */
#define LED0_PORT (PortE)
#define LED0_PIN (Pin06)
/* LED1 Port/Pin definition */
#define LED1_PORT (PortA)
#define LED1_PIN (Pin07)
/* LED2 Port/Pin definition */
#define LED2_PORT (PortB)
#define LED2_PIN (Pin05)
/* LED3 Port/Pin definition */
#define LED3_PORT (PortB)
#define LED3_PIN (Pin09)
/* LED0~3 toggle definition */
#define LED0_TOGGLE() (PORT_Toggle(LED0_PORT, LED0_PIN))
#define LED1_TOGGLE() (PORT_Toggle(LED1_PORT, LED1_PIN))
#define LED2_TOGGLE() (PORT_Toggle(LED2_PORT, LED2_PIN))
#define LED3_TOGGLE() (PORT_Toggle(LED3_PORT, LED3_PIN))
/* uncomment this line if wants to print information to Terminal I/O window */
#define __PRINT_TO_TERMINAL
/*******************************************************************************
* Global variable definitions (declared in header file with 'extern')
******************************************************************************/
/*******************************************************************************
* Local function prototypes ('static')
******************************************************************************/
/*******************************************************************************
* Local variable definitions ('static')
******************************************************************************/
/*******************************************************************************
* Function implementation - global ('extern') and local ('static')
******************************************************************************/
/**
*******************************************************************************
** \brief ExtInt12 as key row 0 callback function
**
** \param None
**
** \retval None
**
******************************************************************************/
unsigned int keynum;
/**
*******************************************************************************
** \brief ExtInt13 as key row 1 callback function
**
** \param None
**
** \retval None
**
******************************************************************************/
void delay_ms(unsigned int k)
{
unsigned int i,j;
for(i=0;i<k;i++)
for(j=0;j<300;j++);
}
/**
*******************************************************************************
** \brief LED 0~3 init function
**
** \param None
**
** \retval None
**
******************************************************************************/
void Led_Init(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_Out;
/* LED0 Port/Pin initialization */
PORT_Init(LED0_PORT, LED0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(LED1_PORT, LED1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(LED2_PORT, LED2_PIN, &stcPortInit);
/* LED3 Port/Pin initialization */
PORT_Init(LED3_PORT, LED3_PIN, &stcPortInit);
}
void Key_Init(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_Out;
/* LED0 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT2_PIN, &stcPortInit);
stcPortInit.enPinMode = Pin_Mode_In;
/* enable internal pull-up */
stcPortInit.enPullUp = Enable;
/* LED0 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN2_PIN, &stcPortInit);
}
void Hang_Output(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_Out;
/* LED0 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN2_PIN, &stcPortInit);
}
void Hang_Input(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_In;
/* enable internal pull-up */
stcPortInit.enPullUp = Enable;
/* LED0 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYIN_PORT, KEYIN2_PIN, &stcPortInit);
}
void Lie_Output(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_Out;
/* LED0 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT2_PIN, &stcPortInit);
}
void Lie_Input(void)
{
stc_port_init_t stcPortInit;
/* configuration structure initialization */
MEM_ZERO_STRUCT(stcPortInit);
stcPortInit.enPinMode = Pin_Mode_In;
/* enable internal pull-up */
stcPortInit.enPullUp = Enable;
/* LED0 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT0_PIN, &stcPortInit);
/* LED1 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT1_PIN, &stcPortInit);
/* LED2 Port/Pin initialization */
PORT_Init(KEYOUT_PORT, KEYOUT2_PIN, &stcPortInit);
}
unsigned int GetKey(void)
{
unsigned int keyvalue = 0;
uint16_t hangvalue=0,lievalue;
// 第1回合第1步
PORT_ResetBits(KEYOUT_PORT, KEYOUT0_PIN);
PORT_ResetBits(KEYOUT_PORT, KEYOUT1_PIN);
PORT_ResetBits(KEYOUT_PORT, KEYOUT2_PIN);
hangvalue=((PORT_GetData(KEYIN_PORT)&0x7000)>>12);
if (hangvalue != 0x07)// 从IO口输入，读IO口
{
// 读出的不是0x0f说明有按键被按下
// 第1回合第2步：读出端口从读出值来判断是哪一行
delay_ms(10);
Hang_Output();
Lie_Input();
// 第一回合中算出行号
switch (hangvalue)
{
case 0x3:
PORT_ResetBits(KEYIN_PORT, KEYIN0_PIN);
lievalue=((PORT_GetData(KEYOUT_PORT)&0x70)>>4);
switch(lievalue)
{
case 0x03:
keyvalue=1;
break;
case 0x05:
keyvalue=2;
break;
case 0x06:
keyvalue=3;
break;
}
break;
case 0x5:
PORT_ResetBits(KEYIN_PORT, KEYIN1_PIN);
lievalue=((PORT_GetData(KEYOUT_PORT)&0x70)>>4);
switch(lievalue)
{
case 0x03:
keyvalue=4;
break;
case 0x05:
keyvalue=5;
break;
case 0x06:
keyvalue=6;
break;
}
break;
case 0x6:
PORT_ResetBits(KEYIN_PORT, KEYIN2_PIN);
lievalue=((PORT_GetData(KEYOUT_PORT)&0x70)>>4);
switch(lievalue)
{
case 0x03:
keyvalue=7;
break;
case 0x05:
keyvalue=8;
break;
case 0x06:
keyvalue=9;
break;
}
break;
default: break;
}
Hang_Input();
Lie_Output();
PORT_ResetBits(KEYOUT_PORT, KEYOUT0_PIN);
PORT_ResetBits(KEYOUT_PORT, KEYOUT1_PIN);
PORT_ResetBits(KEYOUT_PORT, KEYOUT2_PIN);
hangvalue=((PORT_GetData(KEYIN_PORT)&0x7000)>>12);
while (hangvalue != 0x07)
{
hangvalue=((PORT_GetData(KEYIN_PORT)&0x7000)>>12);
}
return keyvalue;
}
return 0;
}
/**
*******************************************************************************
** \brief main function for KEYSCAN function
**
** \param None
**
** \return int32_t Return value, if needed
**
******************************************************************************/
int32_t main(void)
{
/* LED init */
Led_Init();
#ifdef __PRINT_TO_TERMINAL
/* Uart printf port initialize */
Ddl_UartInit();
#endif
Key_Init();
while(1)
{
keynum=GetKey();
if(keynum!=0)
printf("Key %d is pressed.\n", keynum);
}
}
/*******************************************************************************
* EOF (not truncated)
******************************************************************************/
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