du19901c

## adc_example.c
/* A simple ADC example that checks the analog reading on ADC0 and turns
 * an LED on if the reading is higher than a threshold value and turns if
 * off if it is under that value. */
#include <avr/io.h>
#include <stdint.h>

/* Which analog pin we want to read from.  The pins are labeled "ADC0"
 * "ADC1" etc on the pinout in the data sheet.  In this case ADC_PIN
 * being 0 means we want to use ADC0.  On the ATmega328P this is also
 * the same as pin PC0 */

## arduino-modbus-rtu.ino
#include <ArduinoModbus.h>

// How often (in milliseconds) the sensors will be read.
const unsigned long REPORT_INTERVAL = 1000;

void setup() {
  Serial.begin(9600);
  while(!Serial);

  if (!ModbusRTUClient.begin(9600)) {
	/* A simple ADC example that checks the analog reading on ADC0 and turns
	* an LED on if the reading is higher than a threshold value and turns if
	* off if it is under that value. */
	#include <avr/io.h>
	#include <stdint.h>

	/* Which analog pin we want to read from. The pins are labeled "ADC0"
	* "ADC1" etc on the pinout in the data sheet. In this case ADC_PIN
	* being 0 means we want to use ADC0. On the ATmega328P this is also
	* the same as pin PC0 */
	#include <ArduinoModbus.h>

	// How often (in milliseconds) the sensors will be read.
	const unsigned long REPORT_INTERVAL = 1000;

	void setup() {
	Serial.begin(9600);
	while(!Serial);

	if (!ModbusRTUClient.begin(9600)) {