My code returns uint8_t format when is cast to char and Display on LCD it works fine but I want to get that scanned code for further processing. not only to display on LCD 16x2 , but it returns some strange symbols. Any Idea?
#include <LiquidCrystal.h>
#include <avr/pgmspace.h>
#include <hid.h>
#include <hiduniversal.h>
#include <usbhub.h>
#include <Usb.h>
#include <usbhub.h>
#include <avr/pgmspace.h>
#include <hidboot.h>
#include <SPI.h>
LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
USB Usb;
USBHub Hub(&Usb);
HIDUniversal Hid(&Usb);
HIDBoot<HID_PROTOCOL_KEYBOARD> Keyboard(&Usb);
class KbdRptParser : public KeyboardReportParser
{
void PrintKey(uint8_t mod, uint8_t key);
protected:
virtual void OnKeyDown (uint8_t mod, uint8_t key);
virtual void OnKeyPressed(uint8_t key);
};
void KbdRptParser::OnKeyDown(uint8_t mod, uint8_t key)
{
uint8_t c = OemToAscii(mod, key);
if (c)
OnKeyPressed(c);
}
/* what to do when symbol arrives */
void KbdRptParser::OnKeyPressed(uint8_t key)
{
static uint32_t next_time = 0; //watchdog
static uint8_t current_cursor = 0; //tracks current cursor position
if( millis() > next_time ) {
lcd.clear();
current_cursor = 0;
delay( 5 ); //LCD-specific
lcd.setCursor( 0,0 );
}//if( millis() > next_time ...
next_time = millis() + 200; //reset watchdog
if( current_cursor++ == ( DISPLAY_WIDTH + 1 )) { //switch to second line if cursor outside the screen
lcd.setCursor( 0,1 );
}
char keys=(char) key;
Serial.println(keys);
// char add =keys.indexOf(5)+keys.indexOf(6)+keys.indexOf(7)+keys.indexOf(8);
Serial.println(keys);
lcd.print(keys);
};
KbdRptParser Prs;
void setup()
{
Serial.begin( 115200 );
Serial.println("Start");
if (Usb.Init() == -1) {
Serial.println("OSC did not start.");
}
delay( 200 );
Hid.SetReportParser(0, (HIDReportParser*)&Prs);
// set up the LCD's number of columns and rows:
lcd.begin(DISPLAY_WIDTH, 2);
lcd.clear();
lcd.noAutoscroll();
lcd.print("Scan Your Code");
delay( 200 );
}
void loop()
{
Usb.Task();
}