#include <SoftwareSerial.h>
void setup() {
  Serial.begin(115200);
  Serial1.begin(115200); // Serial1 is connected to the custom chip
  Serial1.print(100);
  Serial.println("Data received from UART chip:");
}

void loop() {
  Serial1.print(100);
  while (Serial1.available()) {
    Serial.print((char)Serial1.read());    
  }
  delay(1000);
}