mirror of
https://github.com/No-Chicken/Power-Pico.git
synced 2026-04-03 13:02:36 +08:00
46 lines
940 B
C
46 lines
940 B
C
#include "key.h"
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#include "delay.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 : PA5 */
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GPIO_InitStruct.Pin = KEY1_PIN;
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GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
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GPIO_InitStruct.Pull = GPIO_PULLUP;
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HAL_GPIO_Init(KEY1_PORT, &GPIO_InitStruct);
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/*Configure GPIO pin : PA4 */
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GPIO_InitStruct.Pin = GPIO_PIN_4;
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GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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}
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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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uint8_t keyvalue=0;
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if(mode) key_up = 1;
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if( key_up && ((!KEY1) || KEY2))
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{
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delay_ms(3);//ensure the key is down
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if(!KEY1) keyvalue = 1;
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else if(KEY2) keyvalue = 2;
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if(keyvalue) key_up = 0;
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}
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else
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{
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delay_ms(3);//ensure the key is up
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if(KEY1 && (!KEY2))
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key_up = 1;
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}
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return keyvalue;
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}
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