Arduino USB Host and Barcode Scanner

[faisalsumarna]

I try to make barcode scanner with Arduino, USB Host and Barcode Scanner, when I compiled and run the sketch that's run....but when I scan barcode there is nothing shown...

this is the code

/*
 * Barcode Scanner Arduino
 * Original code by: RadhiFadhillah (github) https://github.com/felis/USB_Host_Shield_2.0/issues/323
 * Modified by: Dirga Brajamusti (dirgabrajamusti::github)
 */
#include <usbhid.h>
#include <usbhub.h>
#include <hiduniversal.h>
#include <hidboot.h>
#include <SPI.h>
#include <Servo.h>

String hasil;


class MyParser : public HIDReportParser {
  public:
    MyParser();
    void Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
  protected:
    uint8_t KeyToAscii(bool upper, uint8_t mod, uint8_t key);
    virtual void OnKeyScanned(bool upper, uint8_t mod, uint8_t key);
    virtual void OnScanFinished();
};

MyParser::MyParser() {}

void MyParser::Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf) {
  // If error or empty, return
  if (buf[2] == 1 || buf[2] == 0) return;

  for (uint8_t i = 7; i >= 2; i--) {
    // If empty, skip
    if (buf[i] == 0) continue;

    // If enter signal emitted, scan finished
    if (buf[i] == UHS_HID_BOOT_KEY_ENTER) {
      OnScanFinished();
    }

    // If not, continue normally
    else {
      // If bit position not in 2, it's uppercase words
      OnKeyScanned(i > 2, buf, buf[i]);
    }

    return;
  }
}

uint8_t MyParser::KeyToAscii(bool upper, uint8_t mod, uint8_t key) {
  // Letters
  if (VALUE_WITHIN(key, 0x04, 0x1d)) {
    if (upper) return (key - 4 + 'A');
    else return (key - 4 + 'a');
  }

  // Numbers
  else if (VALUE_WITHIN(key, 0x1e, 0x27)) {
    return ((key == UHS_HID_BOOT_KEY_ZERO) ? '0' : key - 0x1e + '1');
  }

  return 0;
}

void MyParser::OnKeyScanned(bool upper, uint8_t mod, uint8_t key) {
  uint8_t ascii = KeyToAscii(upper, mod, key);
  hasil = hasil + (char)ascii;
}

void MyParser::OnScanFinished() {
  Serial.println(hasil);
  hasil = "";
}

USB          Usb;
//USBHub       Hub(&Usb);
HIDUniversal Hid(&Usb);
MyParser     Parser;

void setup() {
  Serial.begin(115200);
  Serial.println("Start");
  
  if (Usb.Init() == -1) {
    Serial.println("OSC did not start.");
  }

  delay(200);

  Hid.SetReportParser(0, &Parser);
}

void loop() {
  Usb.Task();
  //Serial.println(Serial.read());
}

I hope some body can help me...

Thank You

[pert]

I moved your topic to an appropriate forum category @faisalsumarna

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

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Thanks in advance for your cooperation.