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10 years, 2 months ago.
KS0108B display and Nucleo F401RE
Hi, I've been trying to use this library
Import libraryDisplay
128x64 grafical display with KS0107B and KS0108B controller
Last commit 07 Sep 2010 by 
Anders Hörnfeldt
with a Nucleo F401RE and this display https://www.sparkfun.com/products/710
This is my test code:
main.cpp
#include "mbed.h"
#include "KS0108.h"
#include "Arial12.h"
#include "Arial14.h"
#include "Comic24.h"
#include "vivaldi16.h"
// (_RST,_DI, _RW, _E, _CS2, _CS1, DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7)
//KS0108 display (PB_13, PB_14, PB_15, PA_3, PA_2, PC_4, PC_3, PC_2, PH_1, PH_0, PA_10, PB_3, PB_5, PB_4);
KS0108 display (A2, A4, A3, A5, A0, A1, D7, D6, D5, D4, D3, D2, D1, D0);
int main() {
while(1){
display.ClearScreen();
display.GotoXY(5,0);
display.SelectFont(Arial12,BLACK,ReadData);
display.PrintNumber(1);
display.PrintChar('m');
display.GotoXY(5,16);
display.PrintString("arial Font test");
wait_ms(3000);
display.GotoXY(2,32);
display.SelectFont(vivaldi16,BLACK,ReadData);
display.PrintString("Vivaldi font");
wait_ms(3000);
}
}
this is a picture of the wiring:
and this is a picture of the result:
What could I be doing wrong?
Question relating to:
2 Answers
10 years, 2 months ago.
First thing is to check the wiring (and then check again and maybe once more...). You may also want to look at D0, D1. Default these pins are not connected on the nucleo since they are used for the serial port between the F401 and the STLink interface part. You should replace these by other pins unless you have modified the related solderbridges on the nucleo board.
Still there is something wrong about the order it is showing the content...
10 years, 2 months ago.
this LCD work with 5V
Use output with Open Drain (i am make custom library to resolve similar problem with 5v quadrature encoder chip)
check tensions with oscilloscope
Sorry, I linked the wrong library, this is the one I am using: http://developer.mbed.org/users/DimiterK/code/KS0108/
posted by Giacomo Graziosi 08 Oct 2014