RPi3B multiple SPI SSD1306 displays about luma.oled HOT 5 CLOSED

So I got it to work as I wanted, this how I solved it

import atexit, time
from luma.core.render import canvas
from luma.core.interface.serial import spi, gpio_cs_spi
from luma.oled.device import ssd1306
import RPi.GPIO as GPIO


cs_pins = [16, 26, 19, 13, 12]
serials = [gpio_cs_spi(device=0, port=0, gpio_CS=cs) for cs in cs_pins]
devices = [ssd1306(serials[i], height=32, rotate=0) for i, _ in enumerate(cs_pins)]

def cleanup():
  for device in devices:
    device.clear()
  GPIO.cleanup()

atexit.register(cleanup)

for i, device in enumerate(devices, start=1):
  with canvas(device) as draw:
    draw.rectangle(device.bounding_box, outline="white", fill="black")
    draw.text((10, 10), f"DISPLAY {i}", fill="white")

while True:
  time.sleep(0.1)

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Why do you use GPIO.output(pin, GPIO.LOW if j == i else GPIO.HIGH)?

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@thijstriemstra Without that all the displays are looping "Display 1", "Display 2" etc all the time (they are all showing the same text)... But without it I get text on the first four displays after a restart of the program...

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I wouldn't 'manually' try to change the gpio pins that luma.oled manages, unless there's a really good reason (e.g bugfix). This sounds to me like it's a coding issue (I want to show X) rather than an issue with luma.oled?

But without it I get text on the first four displays after a restart of the program...

Maybe do the cleear of the screens in the cleanup instead, e.g.

def cleanup():
  for device in devices:
    device.clear()
  GPIO.cleanup()

atexit.register(cleanup)

Or do a cleanup of the CS pins manually instead of using GPIO.cleanup()?

Also: try different/default SPI bus speeds..

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I agree, I'm pretty sure the problem is my code. The change to the cleanup fixed the restart issue. Removed the bus_speed but still have same text on all displays (or actually only on four out of five).

I have also experimented with code from here #311 but didn't get the gpio_cs_spi to work

All help is greatly appreciated

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