Also modifies the PMIC UI code to be more intuitive

Florian Kargl authored 5 years ago and rahix committed 5 years ago

Modify PB callback interface to allow distinction between up/down
events.

Florian Kargl authored 5 years ago and rahix committed 5 years ago

- Add portexpander interrupt handling
- Prevent redundant interrupts between polling portexpander

It only has 27 characters, which as far as I can tell are useless for
actual chinese text.

Copying the list of characters in the same order of font24CN.c into
google trans gives out this almost meaningful message:

> Hello, Microsoft Yahei, the corresponding dot matrix for this font is
> Raspberry Pi Aabc Micro Snow Electronics

Lines have been one pixel too short.

I have no idea whether this is something the compiler wouldn't
automatically do, but it can't hurt to be explicit.

RTC_Init will turn off the RTC and readout will not be possible until
RTC_EnableRTCE is called.  The previous version worked because the
bootloader would call RTC_Init and Epicardium would then call
RTC_EnableRTCE.

This broke with the hardware-init changes in

    b76ac8fc

and lead to behavior where cold boot would not enable the RTC.  This
commit switches the order of the two calls in the bootloader so it is
always initialized correctly.  Because some older bootloaders are
already out in the field, this commit also introduces basic rtc init
into Epicardium so the new firmware can work correctly with older
bootloaders.

Signed-off-by: Rahix <rahix@rahix.de>

This reverts part of ffce77e1.

Signed-off-by: Rahix <rahix@rahix.de>

The bootloader will have initialized the display in all cases so we
don't need to repeat the same init code all over again.

Signed-off-by: Rahix <rahix@rahix.de>

Signed-off-by: Rahix <rahix@rahix.de>

pmic_init() uses the GPIO API internally to set up the PMIC
interrupt handler.  This does not work properly if called before
GPIO_Init() and will lead to the power-button never interrupting
Epicardium.

Fixes #83.

Signed-off-by: Rahix <rahix@rahix.de>

Mateusz Zalega authored 5 years ago and rahix committed 5 years ago

Signed-off-by: Mateusz Zalega <mateusz@appliedsourcery.com>

Mateusz Zalega authored 5 years ago and rahix committed 5 years ago

Signed-off-by: Mateusz Zalega <mateusz@appliedsourcery.com>