68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
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#include <drv_gpio.h>
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#include <rtdevice.h>
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#include <rtthread.h>
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#define LOG_TAG "pin.irq"
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#define LOG_LVL LOG_LVL_DBG
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#include <ulog.h>
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#include <rtatomic.h>
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#include "my_func.h"
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#define KEY_UP GET_PIN(C, 5)
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#define KEY_DOWN GET_PIN(C, 1)
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#define KEY_LEFT GET_PIN(C, 0)
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#define KEY_RIGHT GET_PIN(C, 4)
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extern rt_atomic_t now_direction ;
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extern rt_atomic_t snake_pressed ;
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extern int snake_max;
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void key_up_callback(void *args)
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{
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rt_atomic_store(&snake_pressed, snake_max+1);
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if(rt_atomic_load(&now_direction) != 2) rt_atomic_store(&now_direction, 0);
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int value = rt_pin_read(KEY_UP);
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LOG_I("key up value: %d\n", value);
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}
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void key_down_callback(void *args)
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{
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rt_atomic_store(&snake_pressed, snake_max+1);
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int value = rt_pin_read(KEY_DOWN);
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if(rt_atomic_load(&now_direction) != 0) rt_atomic_store(&now_direction, 2);
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LOG_I("key down value: %d\n", value);
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}
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void key_left_callback(void *args)
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{
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rt_atomic_store(&snake_pressed, snake_max+1);
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if(rt_atomic_load(&now_direction) != 3) rt_atomic_store(&now_direction, 1);
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int value = rt_pin_read(KEY_LEFT);
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LOG_I("key left value: %d\n", value);
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}
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void key_right_callback(void *args)
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{
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rt_atomic_store(&snake_pressed, snake_max+1);
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if(rt_atomic_load(&now_direction) != 1) rt_atomic_store(&now_direction, 3);
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int value = rt_pin_read(KEY_RIGHT);
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LOG_I("key right value: %d\n", value);
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}
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static int rt_pin_irq_example(void)
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{
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rt_pin_mode(KEY_UP, PIN_MODE_INPUT_PULLUP);
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rt_pin_mode(KEY_DOWN, PIN_MODE_INPUT_PULLUP);
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rt_pin_mode(KEY_LEFT, PIN_MODE_INPUT_PULLUP);
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rt_pin_mode(KEY_RIGHT, PIN_MODE_INPUT_PULLUP);
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rt_pin_attach_irq(KEY_UP, PIN_IRQ_MODE_FALLING, key_up_callback, RT_NULL);
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rt_pin_attach_irq(KEY_DOWN, PIN_IRQ_MODE_FALLING, key_down_callback, RT_NULL);
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rt_pin_attach_irq(KEY_LEFT, PIN_IRQ_MODE_FALLING, key_left_callback, RT_NULL);
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rt_pin_attach_irq(KEY_RIGHT, PIN_IRQ_MODE_FALLING, key_right_callback, RT_NULL);
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rt_pin_irq_enable(KEY_UP,PIN_IRQ_ENABLE);
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rt_pin_irq_enable(KEY_DOWN,PIN_IRQ_ENABLE);
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rt_pin_irq_enable(KEY_LEFT,PIN_IRQ_ENABLE);
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rt_pin_irq_enable(KEY_RIGHT,PIN_IRQ_ENABLE);
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return RT_EOK;
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}
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MSH_CMD_EXPORT_ALIAS(rt_pin_irq_example,irq, pin_irq_example);
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