MKR1000 and HX711

Hello,

I try to publish the result from a HX711 on a web page.

If I play with the X711 and the serial monitor it’s OK
If I publish the analog result on a web server it’s also OK

BUT when I try to combine both it’s blocked.
I add some Serial.println to better understand and it’s blocked at scale.tare() in the main function;

Please help I don’t understand why this is bloking :wink:

Many thanks,
Thierry

This is my code:

#include <SPI.h>
#include <WiFi101.h>
#include “HX711.h”
#include “arduino_secrets.h”

// HX711 circuit wiring
const int LOADCELL_DOUT_PIN = 2;
const int LOADCELL_SCK_PIN = 3;

///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid = SECRET_SSID; // your network SSID (name)
char pass = SECRET_PASS; // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0; // your network key Index number (needed only for WEP)

int status = WL_IDLE_STATUS;

WiFiServer server(80);

HX711 scale;

float calibration_factor = 50; // this calibration factor is adjusted according to my load cell
float units;
float ounces;

void setup() {

//Initialize serial and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}

// check for the presence of the shield:
if (WiFi.status() == WL_NO_SHIELD) {
Serial.println(“WiFi shield not present”);
// don’t continue:
while (true);
}

// attempt to connect to WiFi network:
while (status != WL_CONNECTED) {
Serial.print("Attempting to connect to SSID: ");
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
status = WiFi.begin(ssid, pass);

// wait 10 seconds for connection:
delay(10000);
}
server.begin();
// you’re connected now, so print out the status:
printWiFiStatus();

scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
Serial.println(“HX711 calibration sketch”);

scale.set_scale();
Serial.println(“scale.set_scale()”);
scale.tare(); //Reset the scale to 0
Serial.println(“scale.tare()”);

long zero_factor = scale.read_average(); //Get a baseline reading
Serial.print("Zero factor: "); //This can be used to remove the need to tare the scale. Useful in permanent scale projects.
Serial.println(zero_factor);

scale.set_scale(calibration_factor); //Adjust to this calibration factor
}

void loop() {
Serial.println(“loop”);

// listen for incoming clients
WiFiClient client = server.available();
if (client) {
Serial.println(“new client”);
// an http request ends with a blank line
bool currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
Serial.write(c);
// if you’ve gotten to the end of the line (received a newline
// character) and the line is blank, the http request has ended,
// so you can send a reply
if (c == ‘\n’ && currentLineIsBlank) {
// send a standard http response header
client.println(“HTTP/1.1 200 OK”);
client.println(“Content-Type: text/html”);
client.println(“Connection: close”); // the connection will be closed after completion of the response
client.println(“Refresh: 5”); // refresh the page automatically every 5 sec
client.println();
client.println("");
client.println("");
// output the value of HX711

client.print(“Reading: “);
units = scale.get_units(), 10;
if (units < 0)
{
units = 0.00;
}
ounces = units * 0.035274;
client.print(units);
client.print(” grams”);
client.print(" calibration_factor: ");
client.print(calibration_factor);
client.println();

client.println("");
break;
}
if (c == ‘\n’) {
// you’re starting a new line
currentLineIsBlank = true;
}
else if (c != ‘\r’) {
// you’ve gotten a character on the current line
currentLineIsBlank = false;
}
}
}
// give the web browser time to receive the data
delay(1);

// close the connection:
client.stop();
Serial.println(“client disconnected”);
}
}

void printWiFiStatus() {
// print the SSID of the network you’re attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());

// print your WiFi shield’s IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);

// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print(“signal strength (RSSI):”);
Serial.print(rssi);
Serial.println(" dBm");
}

I must apologie... it's working I just mixed analog and digital pinout.
Shame on me :wink: