39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
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#include "key.h"
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/**************************************************************************
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Function: Key initialization
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Input : none
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Output : none
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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**************************************************************************/
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void KEY_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); // ʹ<><CAB9>PA<50>˿<EFBFBD>ʱ<EFBFBD><CAB1>
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5; // <20>˿<EFBFBD><CBBF><EFBFBD><EFBFBD><EFBFBD>
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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GPIO_Init(GPIOA, &GPIO_InitStructure); // <20><><EFBFBD><EFBFBD><EFBFBD>趨<EFBFBD><E8B6A8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>GPIOA
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}
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/**************************************************************************
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Function: Key scan
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Input : none
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Output : 0<EFBFBD><EFBFBD>No action<EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>click<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɨ<EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD> ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬ 0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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**************************************************************************/
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u8 click(void)
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{
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static u8 flag_key = 1; // <20><><EFBFBD><EFBFBD><EFBFBD>ɿ<EFBFBD><C9BF><EFBFBD>־
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if (flag_key && KEY == 0) // <20><><EFBFBD><EFBFBD><E2B5BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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{
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flag_key = 0;
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return 1; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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else if (1 == KEY)
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flag_key = 1;
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return 0; // <20>ް<EFBFBD><DEB0><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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}
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