Fill the progress bar at the end and code optimizations

Firmware/ultralcd.cpp

@@ -8786,6 +8786,7 @@ static bool check_file(const char* filename) {
 	const uint32_t filesize = card.getFileSize();
 	uint32_t startPos = 0;
 	const uint16_t bytesToCheck = min(END_FILE_SECTION, filesize);
+	uint8_t blocksPrinted = 0;
 	if (filesize > END_FILE_SECTION) {
 		startPos = filesize - END_FILE_SECTION;
 		card.setIndex(startPos);
@@ -8793,23 +8794,23 @@ static bool check_file(const char* filename) {
 
 	lcd_clear();
 	lcd_puts_at_P(0, 1, _i("Checking file"));////c=20 r=1
+	lcd_set_cursor(0, 2);
 	printf_P(PSTR("startPos=%lu\n"), startPos);
 	while (!card.eof() && !result) {
-		lcd_set_cursor(0, 2);
-		for (int column = 0; column < 20; column++) {
-			const int8_t percent = ((card.get_sdpos() - startPos) * 100) / bytesToCheck;
-			if (column < (percent / 5))
-			{
-				lcd_set_cursor(column, 2);
-				lcd_print('\xFF'); //simple progress bar
-			}
-		}
+		for (; blocksPrinted < (((card.get_sdpos() - startPos) * LCD_WIDTH) / bytesToCheck); blocksPrinted++)
+			lcd_print('\xFF'); //simple progress bar
 
 		card.sdprinting = true;
 		get_command();
 		result = check_commands();
 	}
+
+	for (; blocksPrinted < LCD_WIDTH; blocksPrinted++)
+		lcd_print('\xFF'); //simple progress bar
+	_delay(100); //for the user to see the end of the progress bar.
+
 	card.printingHasFinished();
+
 	strncpy_P(lcd_status_message, _T(WELCOME_MSG), LCD_WIDTH);
 	lcd_finishstatus();
 	return result;