Hello ,
Finally ,I could make LCD (JHD162A) work with Arduino-Uno through RIOT OS
I removed lcd initialization from setup and added below two lines in main
function ….and it worked !
if (hd44780_init(&dev,&hd44780_params[0])!=0)
{
puts("failed");
}
But I don’t understand the logic in context of &hd44780_params[0].
I understand that we are checking the successful initialisation of lcd by using
if loop but what are we checking when we pass &hd44780_params[0]
Why can’t we just initialize the lcd as I did in my below e-mail?
Thanks in advance for help!
Best Regards,
Sangeeta PATIL
CATIA Systems R&D QA Engineer
Office: +91 20 6793 8171
[email protected]<mailto:[email protected]>
[3DS Logo]
3DS.COM/CATIA<http://www.3ds.com/CATIA>
3D PLM Software | 3dplm Software Solutions Ltd., Plot No.15/B, Pune Infotech
Park, M.I.D.C, Hinjewdi | 411057 Pune | India
From: users <[email protected]> On Behalf Of PATIL Sangeeta
Sent: Wednesday, October 23, 2019 6:46 PM
To: RIOT OS users list <[email protected]>
Subject: [riot-users] HD44780 LCD with Arduino Uno
Hello,
I am trying to interface HD44780 LCD with Arduino Uno.
All the connections are done as per
https://github.com/RIOT-OS/RIOT/tree/master/tests/driver_hd44780
Below is my code:
The code is compiled successfully but does not work as expected on flashing to
Arduino Uno i.e I could not see cursor blinking
//#include "hd44780_params.h"
#include "hd44780.h"
hd44780_t *a;
hd44780_params_t *b;
void setup(void)
{
hd44780_init(a,b);
}
void loop(void)
{
//hd44780_print(a,"hi");
hd44780_blink(a,HD44780_ON);
delay(100);
}
Best Regards,
Sangeeta
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