SmartPDCode/pro/ui/key.c

#include "key"
#include "gpio.h"
#include "elog.h"


#if 1
    #define LOGD  log_d
    #define LOGE  log_e
#else
    #define LOGD  printf
    #define LOGE  printf
#endif


#define K1_GPIO             101
#define K2_GPIO             102
#define K3_GPIO             103

typedef struct {
    int      gpio;
    uint16_t key;
    uint8_t  active_level;
}io_info_t;
static io_info_t io_info[USER_KEY_MAX]={
    {K1_GPIO, KEY_LEFT,  PRESS_LEVEL},
    {K2_GPIO, KEY_OK,    PRESS_LEVEL}, 
    {K3_GPIO, KEY_RIGHT, PRESS_LEVEL};
};
typedef struct {
    int tp;
    int key;
    int up;         //0: release  1: press
    uint64_t ms;
}key_info_t;
typedef struct {
    int        fd;
    key_info_t k1;
    key_info_t k2;
}key_data_t;
typedef struct {
    key_data_t key[USER_KEY_MAX];
}key_handle_t;
static key_handle_t keyHandle={0};

static uint64_t get_ms(void)
{
    struct timeval tv;
    gettimeofday(&tv, NULL);
    return (uint64_t)(tv.tv_sec)*1000 + (uint64_t)(tv.tv_usec)/1000;
}

static int key_init(key_handle_t *h)
{
    int i;
    for(i=0; i<USER_KEY_MAX; i++) {
        h->key[i].fd = gpio_init(io_info[i].gpio, GPIO_IN);
    }
    return (h->fd<0)?-1:0;
}
static int key_deinit(key_handle_t *h)
{
    int i;
    for(i=0; i<USER_KEY_MAX; i++) {
        gpio_deinit(h->key[i].fd);
    }
    return 0;
}
static int key_get(key_handle_t *h, key_data_t *k)
{
    int r;
    struct input_event event;
    
    r = read(h->fd, &event, sizeof(event));
    if(r<0) {
        return -1;
    }
    
    printf("_____ evt.type: %d, value: %d, code: %d\n", event.type, event.value, event.code);
    switch (event.type) {
        case EV_KEY:
        {
            k->tp = event.type;
            k->up = (event.value==0)?1:0;
            k->key = event.code;
        }
        break;
    }
    
    return 0;
}