#include <Arduino.h>
#include <SPI.h>      //for screen
#include <U8g2lib.h>  //for screen
#include <stdlib.h>
#define ADC_PIN 26

int adcVal = 0;
float xLocation = 0;

//screen setup
U8G2_SH1106_128X64_NONAME_F_4W_HW_SPI u8g2(U8G2_R2, 17, 20, 21);
//uint8_t *buf;
char outString[99];

void setup() {
  //setup screen
  u8g2.begin();
  u8g2.setFont(u8g2_font_ncenB14_tr);
  //setup ADC
  analogReadResolution(10);
  digitalWriteFast(23, 1);
}

void loop() {
  adcVal = analogRead(ADC_PIN);
  xLocation = (((float)adcVal/1024)*100);
  u8g2.clearBuffer();
  sprintf(outString, "helloworld");
  u8g2.drawStr(xLocation, 35, outString);
  u8g2.sendBuffer();
}