base.cpp

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#include <WiFiClientSecure.h>
#include "base.h"
 
int8_t PaperdinkDeviceBaseClass::begin()
{
    pinMode(EPD_EN, OUTPUT);
    pinMode(EPD_RST, OUTPUT);
    pinMode(SD_EN, OUTPUT);
    pinMode(BATT_EN, OUTPUT);
    pinMode(PCF_INT, INPUT); // Required to lower power consumption
 
    pinMode(BUTTON_1_PIN, INPUT_PULLUP);
    pinMode(BUTTON_2_PIN, INPUT_PULLUP);
    pinMode(BUTTON_3_PIN, INPUT_PULLUP);
    pinMode(BUTTON_4_PIN, INPUT_PULLUP);
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::enable_display()
{
    // Power up EPD
    digitalWrite(EPD_EN, LOW);
    digitalWrite(EPD_RST, LOW);
    delay(50);
    digitalWrite(EPD_RST, HIGH);
    delay(50);
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::disable_display()
{
    digitalWrite(EPD_EN, HIGH);
    digitalWrite(EPD_RST, LOW);
    delay(50);
    digitalWrite(EPD_RST, HIGH);
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::enable_sd()
{
    // Power up SD
    digitalWrite(SD_EN, LOW);
    if (!SD.begin(SD_CS)) {
        Serial.println("SD failed!");
        return -1;
    }
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::disable_sd()
{
    // Power down SD
    digitalWrite(SD_EN, HIGH);
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::disable_everything()
{
    disable_display();
    disable_sd();
    // TODO: Add disable functions for Batt
    digitalWrite(BATT_EN, HIGH);
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::deep_sleep_timer_wakeup(uint64_t sleep_time_us)
{
    // Turn off everything
    disable_everything();
 
    esp_sleep_enable_timer_wakeup(sleep_time_us);
    Serial.printf("Timer wakeup after %lld microseconds...", sleep_time_us);
 
    // Go to sleep
    esp_deep_sleep_start();
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::deep_sleep_button_wakeup(uint8_t gpio_num)
{
    // Turn off everything
    disable_everything();
 
    esp_sleep_enable_ext0_wakeup((gpio_num_t)gpio_num, 0); //1 = High, 0 = Low
    Serial.printf("Button wakeup on pin %d", gpio_num);
    // Go to sleep
    esp_deep_sleep_start();
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::deep_sleep_timer_button_wakeup(uint64_t sleep_time_us, uint8_t gpio_num)
{
    // Turn off everything
    disable_everything();
 
    esp_sleep_enable_timer_wakeup(sleep_time_us);
    esp_sleep_enable_ext0_wakeup((gpio_num_t)gpio_num, 0); //1 = High, 0 = Low
    Serial.printf("Timer wakeup after %lld us or button on pin %d", sleep_time_us, gpio_num);
    // Go to sleep
    esp_deep_sleep_start();
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::connect_wifi(const char *ssid, const char *password, uint8_t attempts)
{
    WiFi.begin(ssid, password);
 
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
        if (!attempts--)
            return -1;
    }
    Serial.println("Connected");
 
    return 0;
}
 
int8_t PaperdinkDeviceBaseClass::connect_wifi(const char *ssid, const char *password)
{
    return connect_wifi(ssid, password, 40);
}