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lexus2k / ssd1306

Driver for SSD1306, SSD1331, SSD1351, IL9163, ILI9341, ST7735, PCD8544, Nokia 5110 displays running on Arduino/ESP32/Linux (Rasperry) platforms
MIT License
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AtTiny84 not working #95

Closed ghost closed 4 years ago

ghost commented 4 years ago

Hello,

First of all, thanks for this library, I really like it a lot.

I am trying to use the library for a project that uses an AtTiny84A and a 128x32 SSD1306 OLED. I'm using the I2C version.

The OLED stays completely black though, no matter what I do. I have tested the included Demo and it works with an AtTiny85 but the screen remains black with the AtTiny84A. I have also tried the code from issue #39 but the result is still the same.

I have tried both the ATTinyCore (with clockwise pin mapping) and the core by D. Amellis. I'm using the internal 8MHz clock and an Arduino Nano as ISP programmer. I have connected SDA to pin 7 and SCL to pin 9 (software pins 6 and 4 respectively).

lexus2k commented 4 years ago

Hi @programer786,

I'm looking into issue. Maybe, it relates to i2c timings. I will let you know, if I find something.

Best regards

lexus2k commented 4 years ago

Hi,

I've checked the code (i2c software implementation), and didn't find any problems. Do you have any logic analyzer to capture the data on 4 and 6 logic pins?

lexus2k commented 4 years ago

Hi,

Can you check 1.8_dev branch?

lexus2k commented 4 years ago

Did you have a chance to verify the fix?

lexus2k commented 4 years ago

Closing the issue due to inactivity.