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#include "badge/gpio.h"
#include "badge/config.h"
#include <Arduino.h>
#define BUTTON_PIN 0
#if UVOK_EPAP_BOARD == BOARD_ESP32_CROWPANEL
// Elecrow
#define EXIT_KEY 1
#define HOME_KEY 2
#define NEXT_KEY 4
#define OK_KEY 5
#define PRV_KEY 6
#endif
static unsigned long pressedTime = 0;
static unsigned long releasedTime = 0;
static void gpio_loop(void *);
typedef uint32_t pin_notification_t;
#define GPIO_STACK 2048
#define GPIO_QUEUE_LEN 4
static StaticTask_t gpio_task;
static StackType_t gpio_stack[GPIO_STACK / sizeof(StackType_t)];
static StaticQueue_t gpio_queue_storage;
static uint8_t gpio_queue_content[GPIO_QUEUE_LEN * sizeof(pin_notification_t)];
static QueueHandle_t gpio_q;
static ARDUINO_ISR_ATTR void gpio_pin_irq(void *);
void de::uvok::badge::gpio_init(void)
{
xTaskCreateStatic(gpio_loop, "gpio", GPIO_STACK, NULL, configMAX_PRIORITIES - 1, gpio_stack, &gpio_task);
gpio_q = xQueueCreateStatic(4, sizeof(pin_notification_t), &(gpio_queue_content[0]), &gpio_queue_storage);
#if UVOK_EPAP_BOARD == BOARD_ESP32_CROWPANEL
uint8_t inPins[] = {EXIT_KEY, HOME_KEY, NEXT_KEY, OK_KEY, PRV_KEY};
for (uint8_t p : inPins)
{
pinMode(p, GPIO_MODE_INPUT);
// simply use pin number as arg
attachInterruptArg(p, gpio_pin_irq, (void *)(ptrdiff_t)p, CHANGE);
}
#endif
}
long de::uvok::badge::gpio_poll(void)
{
int x = 0;
static int lastState = HIGH;
int buttonState = digitalRead(BUTTON_PIN);
long pressDuration = 0;
if (lastState == HIGH && buttonState == LOW)
{
Serial.println("``\\__");
pressedTime = millis();
lastState = LOW;
}
else if (lastState == LOW && buttonState == HIGH)
{
lastState = HIGH;
Serial.println("__/``");
releasedTime = millis();
pressDuration = releasedTime - pressedTime;
};
return pressDuration;
}
static void gpio_loop(void *ctx)
{
Serial.println("Starting GPIO loop");
while (1)
{
pin_notification_t received;
if (xQueueReceive(gpio_q, &received, portMAX_DELAY) == pdTRUE)
{
const int level = (received & 0x100) ? HIGH : LOW;
const bool pressed = !level;
const int pin = received & 0xff;
Serial.printf("Pin %d was %s\n", pin, pressed ? "pressed" : "released");
}
}
}
static ARDUINO_ISR_ATTR void gpio_pin_irq(void *arg)
{
uint8_t pin_no = (uint8_t)(ptrdiff_t)arg;
int pinLevel = digitalRead(pin_no);
pin_notification_t send = (pinLevel << 8) | (pin_no);
BaseType_t wakeup = false;
xQueueSendFromISR(gpio_q, &send, &wakeup);
if (wakeup)
{
portYIELD_FROM_ISR();
}
}
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