/*
* BigClown - Humidity, Temperature, Lux Meter and Pressure Module
* 
* https://chiptron.cz
* https://time4ee.com
* 
* The example code is based on https://www.bigclown.com/
* 
* 2018
*/

#include "application.h"

#define BLACK true
// sht20 instance
bc_sht20_t sht20;
// lux meter instance
bc_opt3001_t lux;
// presure instance
bc_mpl3115a2_t pressure;

void sht20_module_event_handler(bc_sht20_t *self, bc_sht20_event_t event, void *event_param) 
{
    (void) event_param;
    char bufferTemp[13];
    char bufferHum[13];
    float temperature = 0.0;
    float humidity = 0.0;

    if (event == BC_SHT20_EVENT_UPDATE) 
    {
        bc_sht20_get_temperature_celsius(self, &temperature);
        bc_sht20_get_humidity_percentage(self, &humidity);

        sprintf(bufferTemp, "%05.2f", temperature);
        bufferTemp[12] = '\0';

        sprintf(bufferHum, "%05.2f", humidity);
        bufferHum[12] = '\0';

        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 30, &bufferTemp[0], BLACK);
        bc_module_lcd_draw_string(100, 30, "°C", BLACK);

        bc_module_lcd_draw_string(5, 55, &bufferHum[0], BLACK);
        bc_module_lcd_draw_string(100, 55, "%", BLACK);
        
        // Don't forget to update
        bc_module_lcd_update();
    } 
    else 
    {
        temperature = 0.0;
        humidity = 0.0;
        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 30, &bufferTemp[0], BLACK);
        bc_module_lcd_draw_string(100, 30, "°C", BLACK);

        bc_module_lcd_draw_string(5, 55, &bufferHum[0], BLACK);
        bc_module_lcd_draw_string(100, 55, "%", BLACK);

        // Don't forget to update
        bc_module_lcd_update();
    }
}

void lux_module_event_handler(bc_opt3001_t *self, bc_opt3001_event_t event, void *event_param) 
{
    (void) event_param;
    char bufferLx[13];
    float illumination = 0.0;

    if (event == BC_OPT3001_EVENT_UPDATE) {
        bc_opt3001_get_illuminance_lux(self, &illumination);

        sprintf(bufferLx, "%06.2f", illumination);
        bufferLx[12] = '\0';

        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 80, &bufferLx[0], BLACK);
        bc_module_lcd_draw_string(100, 80, "lx", BLACK);

        // Don't forget to update
        bc_module_lcd_update();
    } 
    else 
    {
        illumination = 0.0;
        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 80, "0.0", BLACK);

        // Don't forget to update
        bc_module_lcd_update();
    }
}

void pressure_module_event_handler(bc_mpl3115a2_t *self, bc_mpl3115a2_event_t event, void *event_param) 
{
    (void) event_param;
    char bufferPressure[13];
    float press = 0.0;

    if (event == BC_MPL3115A2_EVENT_UPDATE) {
        bc_mpl3115a2_get_pressure_pascal(self, &press);

        sprintf(bufferPressure, "%06.0f", press);
        bufferPressure[12] = '\0';

        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 105, &bufferPressure[0], BLACK);
        bc_module_lcd_draw_string(100, 105, "Pa", BLACK);

        // Don't forget to update
        bc_module_lcd_update();
    } 
    else 
    {
        press = 0.0;
        // Use big font
        bc_module_lcd_set_font(&bc_font_ubuntu_24);

        bc_module_lcd_draw_string(5, 105, "0.0", BLACK);

        // Don't forget to update
        bc_module_lcd_update();
    }
}

void application_init(void)
{
    /* LCD init */
    // The parameter is internal buffer in SDK, no need to define it
    bc_module_lcd_init(&_bc_module_lcd_framebuffer);

    bc_module_lcd_clear();
    bc_module_lcd_update();

    /* SH20 init (temperature/humidity) */
    bc_sht20_init(&sht20, BC_I2C_I2C0, 0x40);

    // set update interval
    bc_sht20_set_update_interval(&sht20, 1000);

    // set evend handler (what to do when tag update is triggered)
    bc_sht20_set_event_handler(&sht20, sht20_module_event_handler, NULL);

    /* OPT3001 init */
    bc_opt3001_init(&lux, BC_I2C_I2C0, 0x44);

    // set update interval
    bc_opt3001_set_update_interval(&lux, 1000);

    // set evend handler (what to do when tag update is triggered)
    bc_opt3001_set_event_handler(&lux, lux_module_event_handler, NULL);

    /* MPL3115A2 init */
    bc_mpl3115a2_init(&pressure, BC_I2C_I2C0, 0x60);

    // set update interval
    bc_mpl3115a2_set_update_interval(&pressure, 1000);

    // set evend handler (what to do when tag update is triggered)
    bc_mpl3115a2_set_event_handler(&pressure, pressure_module_event_handler, NULL);

    // Init default font, this is necessary
    // See other fonts in sdk/bcl/inc/bc_font_common.h
    bc_module_lcd_set_font(&bc_font_ubuntu_15);

    // Draw string at X, Y location
    bc_module_lcd_draw_string(10, 5, "chiptron.cz", BLACK);

    bc_module_lcd_draw_line(5, 20, 115, 20, BLACK);
    
     // Don't forget to update
    bc_module_lcd_update();
}