Good Morning,
I am trying to read the barcodes using Honeywell’s quantumt ms3580 scanner https://www.honeywellaidc.com/es-es/products/barcode-scanners/hands-free/quantumt-3580 an arduino mega 2560 and a USB host shield 2.0.
I have followed the example https://www.circuitsathome.com/connecting-barcode-scanner-to-arduino-using-usb-host-shield/
the parameters of my scanner are:
Intf. Class: 03
Intf. Subclass: 01
Intf. Protocol: 01
But I still can’t get the scanner to power up, and therefore read the barcodes. I connect it to my PC and if it feeds and reads the barcodes correctly.
I leave you my code:
#include <usbhid.h>
#include <usbhub.h>
#include <hiduniversal.h>
#include <hidboot.h>
#include <SPI.h>
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);
Serial.print((char)ascii);
}
void MyParser::OnScanFinished() {
Serial.println(" - Lectura Correcta!!");
}
USB Usb;
USBHub Hub(&Usb);
HIDUniversal Hid(&Usb);
MyParser Parser;
void setup() {
Serial.begin( 115200 );
Serial.println("Escaner Iniciado Correctamente!");
if (Usb.Init() == -1) {
Serial.println("OSC did not start.");
}
delay( 200 );
Hid.SetReportParser(0, &Parser);
}
void loop() {
Usb.Task();
}
I hope your help to see if it is possible to know where I am failing and if it is possible to find a solution.
Thank you very much in advance.
