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feat: first commit

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不吃油炸鸡
2025-08-02 19:53:22 +08:00
commit db264d34e1
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45
bootloader/BSP/KEY/key.c Normal file
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#include "key.h"
#include "delay.h"
void Key_Port_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin : PA5 */
GPIO_InitStruct.Pin = KEY1_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(KEY1_PORT, &GPIO_InitStruct);
/*Configure GPIO pin : PA4 */
GPIO_InitStruct.Pin = GPIO_PIN_4;
GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}
uint8_t KeyScan(uint8_t mode)
{
static uint8_t key_up = 1;
uint8_t keyvalue=0;
if(mode) key_up = 1;
if( key_up && ((!KEY1) || KEY2))
{
delay_ms(3);//ensure the key is down
if(!KEY1) keyvalue = 1;
else if(KEY2) keyvalue = 2;
if(keyvalue) key_up = 0;
}
else
{
delay_ms(3);//ensure the key is up
if(KEY1 && (!KEY2))
key_up = 1;
}
return keyvalue;
}