Resuming development of libledmtx

It has been a bit hectic in the last few months (and consequently a bit quiet here too). Here is some news: after a long period without any functional changes, I’d like to announce that the addition of some new features in libledmtx is scheduled for the next few weeks. Such features are mostly required for p18-LEDcube, but also useful for a future p18clock firmware update.

Specifically, the planned features are:

• Support for double buffer. In this configuration, the driver reads from the frontbuffer, whereas the framebuffer manipulation routines act on the backbuffer. Once the backbuffer is ready, buffers can be swapped by using ledmtx_swapbuffers(). This in turn would enable viewports over the frontbuffer, i.e. having a frontbuffer larger than the actual display and only make a specific region visible.

• Minor optimizations, mainly affecting the r393c164 driver. Small memory savings in the access bank are also expected.

• Introduction of tests based on lit and the gpsim Microchip PIC simulator, enabling the validation of the library without relying on real hardware.

That’s all for now! Stay tuned!