mirror of
https://github.com/No-Chicken/Power-Pico.git
synced 2026-04-03 13:02:36 +08:00
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
#include "key.h"
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#include "cmsis_os.h"
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void Key_Port_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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/*Configure GPIO pin : PA0 */
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GPIO_InitStruct.Pin = KEYB_PIN | KEYY_PIN | KEYL_PIN | KEYR_PIN | KEYN_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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HAL_GPIO_Init(KEYB_PORT, &GPIO_InitStruct);
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}
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// mode: 0 - sigle press, 1 - long press
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// return: 0 - no key press, 1 - KEYB, 2 - KEYY, 3 - KEYL, 4 - KEYR, 5 - KEYN
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uint8_t KeyScan(uint8_t mode)
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{
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static uint8_t key_up = 1;
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static uint8_t key_down = 0;
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uint8_t keyvalue = 0;
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if(mode)
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{
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key_up = 1;
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key_down = 0;
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}
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if( key_up && (!KEYB || !KEYY || !KEYL || !KEYR || !KEYN) )
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{
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osDelay(3); // ensure the key pressed
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if(!KEYB)
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key_down = KEYB_NUM;
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else if(!KEYY)
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key_down = KEYY_NUM;
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else if(!KEYL)
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key_down = KEYL_NUM;
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else if(!KEYR)
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key_down = KEYR_NUM;
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else if(!KEYN)
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key_down = KEYN_NUM;
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if(key_down)
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key_up = 0;
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}
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// 松开才有效
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if ( key_down && KEYB && KEYY && KEYL && KEYR && KEYN )
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{
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osDelay(3); // ensure the key
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if(KEYB && KEYY && KEYL && KEYR && KEYN)
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{
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key_up = 1;
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keyvalue = key_down;
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key_down = 0;
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}
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}
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return keyvalue;
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}
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