K-Ability Dev Kit

This is the graphical interface I designed for the project.
It consists of primitive shapes and text using the TFT_eSPI library.
What do you think?

#include <Arduino.h>
#include <TFT_eSPI.h>
#include <SPI.h>
#include <Wire.h>
#include <Button2.h>
#include "esp_adc_cal.h"

//HID
#include <BleMouse.h>

#ifndef TFT_DISPOFF
#define TFT_DISPOFF 0x28
#endif

#ifndef TFT_SLPIN
#define TFT_SLPIN   0x10
#endif

#define TFT_MOSI            19
#define TFT_SCLK            18


#define TFT_BL          4  // Display backlight control pin
#define ADC_EN          14
#define ADC_PIN         34
#define BUTTON_1        35
#define BUTTON_2        0

TFT_eSPI tft = TFT_eSPI(TFT_HEIGHT, TFT_WIDTH); // Invoke custom library

//HID
BleMouse bleMouse;
boolean isConn = false;

int touch_sensor_value_T0 =0;
int touch_sensor_value_T1 =0;
int tsv_ENTER   =0;
int tsv_SELECT  =0;
int tsv_CANCEL  =0;
int tsv_LEFT    =0;
int touch_sensor_value_T6 =0;
int tsv_DOWN    =0;
int tsv_RIGHT   =0;
int touch_sensor_value_T9 =0;

//! Long time delay, it is recommended to use shallow sleep, which can effectively reduce the current consumption
void espDelay(int ms)
{   
    esp_sleep_enable_timer_wakeup(ms * 1000);
    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH,ESP_PD_OPTION_ON);
    esp_light_sleep_start();
}

void setup()
{
    Serial.begin(9600);
    Serial.println("Start");

    Serial.println("Starting BLE work!");
    bleMouse.begin();

    tft.init();
    tft.setRotation(2);
    tft.fillScreen(TFT_BLACK);
    tft.setTextSize(2);
    tft.setTextColor(TFT_WHITE);
    tft.setCursor(0, 0);
    tft.setTextDatum(TL_DATUM);
    tft.drawString("Not connected",  70 , tft.height() / 2 );

    if (TFT_BL > 0) { // TFT_BL has been set in the TFT_eSPI library in the User Setup file TTGO_T_Display.h
         pinMode(TFT_BL, OUTPUT); // Set backlight pin to output mode
         digitalWrite(TFT_BL, TFT_BACKLIGHT_ON); // Turn backlight on. TFT_BACKLIGHT_ON has been set in the TFT_eSPI library in the User Setup file TTGO_T_Display.h
    }


    espDelay(5000);

}

void loop()
{
    tsv_ENTER   = touchRead(T2);
    tsv_SELECT  = touchRead(T3);
    tsv_CANCEL  = touchRead(T4);
    tsv_LEFT    = touchRead(T5);
    tsv_DOWN    = touchRead(T7);
    tsv_RIGHT   = touchRead(T8);
    //manca up!!!

    if( bleMouse.isConnected() && !isConn) {
        isConn = true;
        tft.fillScreen(TFT_BLACK);
        tft.drawString("Connected",  70 , tft.height() / 2 );
    } else if(!bleMouse.isConnected() && isConn) {
        isConn = false;
        tft.fillScreen(TFT_BLACK);
        tft.drawString("Not connected",  70 , tft.height() / 2 );
    }

    if (isConn)
    {
        if(tsv_LEFT     > 5 && tsv_LEFT     < 30){bleMouse.move(-2, 0, 0);}
        if(tsv_RIGHT    > 5 && tsv_RIGHT    < 30){bleMouse.move( 2, 0, 0);}
        if(tsv_DOWN     > 5 && tsv_DOWN     < 30){bleMouse.move( 0, 2, 0);}
    }   

    delay(20);
}