I2C LCD: code inside

[rdixey]

@DVE Hey Dmitrii ...... I see your 128X64 OLED has a SPI CS Pin but when I look at your code it appears that you do not connect it to a GPIO Pin. The Adafruit ssd1306 lib sequences the OLED CS signal high to low to do write operations. How did you eliminate having to do that with your configuration? I ask because I have tried your code using your default pin config (no connection to OLED CS) but it will not turn on for me. On my OLED pcb the CS pin is high (3.3V) by default, did you pull it low all the time on your OLED pcb?

[rdixey]

@rdixey Dmitri.....I went ahead and tied my 128X64 OLED CS Pin to ground, and now the code you provided is working for me as SPI Master. I'm now able to write text to the display. Nice Job :) Many Thanks!

[DVE]

Cool :) I didn't connect CS pin at all, maybe ground is really better.

[leelive]

I tried this code on the i2c 128x64 version of this oled. All the characters are missing the top and bottom pixels. They're the correct characters, but are clipped. Example: The capital 'L' in LoPy is just 3 vertical pixels, and the lower case 'o' is just 2 vertical pixels on for each side. Been messing with it all day and haven't found an obvious problem in the code. I don't have another display to try, but don't think the displays the problem. Any ideas?

[DVE]

Finaly I got 128x64 I2C screen from Ebay. No visible problems, all works nice on standard firmware.

And I don't see any cropping, btw.

@leelive, did you try the last version from my library?

[Jiemde]

@DVE I have the same result when the WiPy2 have the right main.py, but in my case it's the transfert of the main.py by Pymakr or by FTP who don't work !

[daniel]

@Jiemde have you tried with the latest firmware (1.5.0.b2)? We have increased the memory available which was the main reason syncing with Pymakr was not working...

[Jiemde]

@daniel Yes it's with that release! but it's also the same with FTP there is modification of the original file like I explain in an other post like "bytearray" who became "dytearray" and some part of the code who are missing
Jiemde

[daniel]

@Jiemde have you tried formatting the file system?

import os
os.mkfs('/flash')

[Jiemde]

@daniel Just do it, but nothing change!
Changed the WiPy with an other and the result is the same!

[livius]

@daniel
if you look at my post
https://forum.pycom.io/post/3254
it looks same as @Jiemde problem
i have also malformed files - look for line oryginal file in my post