znanev / atc_mithermometer Goto Github PK

In work mode the EPD does not need to repeat all commands.
After performing register initialization and 'update', the controller are not reset.

Then enough commands:

1. Power on
2. Transmitting new segment data
3. Waiting for display sequence update to complete
4. Switch to sleep

The nominal CLK frequency on the EPD controller bus is 1.5 + 1.5 μs.
The information update rate is set in the PLL_CONTROL command. The E-Ink used works well with a value of 0x07, which gives a refresh cycle of about 600ms. But for 'initialization' and 'refresh' a lower value is used. There are problems with the "refresh" cycle. It is not optimized and far from normative. Too long and has the longest known sequence...

The data were obtained based on the analysis of similar, but already optimized EPDs in other original firmware of similar sensors. And tested on MHO-C401.

Original firmware while updating display:

(take y-value/10 for mA)

Custom firmware with cpu_stall_wakeup_by_timer0()

(one time unit = 500ms)

This part comes up only while updating display with new value, any idea what can be different here?
(100ms <-> 1.5sec)

Release 0.5.0. does not work here, tried several times. Flashed back to 0.4.0 and everything is ok again.