Larry Bank
I wasn't planning on buying any more BLE thermal printers, so the answer is probable no :(
I wrote this on an OPIZ & OPI1 and didn't see this issue (on Armbian). Can you describe in detail your setup? OS? Video configuration? Software you're running with BB-CP?
I'll test it here. How do I configure the modern kernel (4.x) Armbian for a 16-bit display?
It's possible that the SPI driver is having some internal issue after using it for a while. The BB-CP code doesn't allocate or free memory in each loop. It just...
There shouldn't be any race condition possible because there's no resource contention. The framebuffer is just shared memory. The only thing that would make the screen freeze is if something...
Please re-test with the latest code
Are you running the code on an ESP32 or ESP32-S3? If the S3, then it looks like a memory alignment issue with the output buffer.
Thanks for narrowing it down; I'll investigate.
Fixed the NEON code. Please confirm.
I can fix that issue here too. I'll get to it today.