LCD hangs at initialization

[ghost]

Hello! First of all, many thanks for your effort in bringing the LCD to us.

I am using Zerynth and its flavor of Python. I took your GpioLcd.py, and LcdApi.py, and went through them to change the machine.py references to the HAL of Zerynth. Eventually I got all the changes done and I got your test file to compile fine.

But there seems to be an issue with the

lcd = GpioLcd(rs_pin=2,
enable_pin=14,
d4_pin=17,
d5_pin=18,
d6_pin=21,
d7_pin=22,
num_lines=2, num_columns=16)

part. If I comment this out, execution goes on, but with this in, the execution hangs at this line.

I have wired everything as per your instructions, except the Enable to G11, as I don't see one on the ESP32 NodeMCU which I run. Therefore I have it on G14. I have also adjusted for my LCD1602 with just two lines and 16 columns. I see the 16 rectangles on the first line, when I connect the wires, so it's working technically, and I have tested in on an Arduino Nano, and got it running.

Another little change is that since I don't have a pot handy, I connected the V0 pin on the 1602 to ground on the ESP32.

I have a nagging feeling I am asking something terribly obvious, but I hope you have time to consider this question.

Many thanks!