F Malpartida  committed 0c4449f

Added larger initialization delay on base LCD class.

Added some comments for the LiquidCrystal_SR_LCD3.

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  • Parent commits 8a9145e
  • Branches V 1.2.0 preparation

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    // before sending commands. Arduino can turn on way before 4.5V so we'll wait 
    // 50
    // ---------------------------------------------------------------------------
-   delayMicroseconds(50000); 
+   delayMicroseconds(100000); 
    //put the LCD into 4 bit or 8 bit mode
    // -------------------------------------

File LiquidCrystal_SR_LCD3.cpp

 // Extendable: Yes
 // @file LiquidCrystal_SR_LCD3.h
 //  Connects an LCD using 3 pins from the Arduino, via an 8-bit 
 //  ShiftRegister (SR from now on).
+//  The original port source for this module is
+//  The 'FastIO' merge has madethis code 4 times faster.
 // @brief 
 // This is a port of the ShiftRegLCD library from raron and ported to the
 // Shiftregister connection description:
 // MC14094 input:  Arduino digital pin 2=Clock, pin 3=Data, pin 4=Strobe
 // MC14094 output: Q8=DB4, Q7=DB5, Q6=DB6, Q5=DB7, Q4=E, Q3=RW, Q2=RS, Q1=None
 //   +--------------------------------------------+
 //   |    Arduino (ATMega 168 or 328)             |
 // - The pinout used here is same saner (the 4 bits for the LCD are all in one 
 //   nibble of the shift register, not spread across 2 like in the
 //   LiquidCrystal_SR pinout)
+// Note however that LiquidCrystal_SR while a bit more complex wiring and code
+// wise, supports non latching shift registers and it a few percent faster than
+// this code since it can address the LCD enable pin without having to send 
+// a pulse through the shift register like the LCD3Wires setup requires.
 // This code makes sure to properly follow the specifications when talking
 // to the LCD while using minimal delays (it's faster than the LCD3wire and aiko

File LiquidCrystal_SR_LCD3.h

 // Copyright 2011 - Under creative commons license 3.0:
 //        Attribution-ShareAlike CC BY-SA
-// This module is by Marc MERLIN <marc_soft<at>>
+// This module is a port by Marc MERLIN <marc_soft<at>>
 // See .cpp file for hardware details.
 // ---------------------------------------------------------------------------