area-8051/uni-stc

SDCC support + HAL + drivers for STC 8051 MCU

uni-stc's Issues

STC15W101 - isp bit to execute code in eeprom

I finally realized if I wrote in assembly I could mix in linker instructions to reposition function addresses.
But unfortunately I could not make code execute in eeprom space.

I will just close this issue but wanted to post the work in case an error is spotted:
https://gist.github.com/mightymos/f6ed05ac96b2b26f1a4394df43f241e8

But my conclusion for now is setting ISP bit only executes bootloader rom.

Error on make all

First I want to thank you for the great project you have put together. In using it I have come across the following behavior:

After running make clean and then running make all I get the following error:

/Users/mwood/Documents/DigiColony/uni-STC/makefiles/2-mcu-rules.mk:34: target build' given more than once in the same rule. sed: 1: "build/dependencies.mk": undefined label 'uild/dependencies.mk' make: *** No rule to make target build/dependencies.mk', needed by `all'. Stop.

If I run make all again it appears to work properly. Is there a way to prevent this requirement?

STC15W101 128 RAM, 1KB flash - limit code size?

I have a STC15W101 mounted to a circuit board (sonoff door sensor).
This chip apparently has 128 bytes of RAM, 1KB of code flash, and 4KB of EEPROM flash.

It appears that just gpio hal alone requires about 2KB of flash.

I did notice that gpio-hal.h defines the GPIO_HAL_H macro.
It is stated that this macro greatly helps reduce flash footprint.
However it appears to only reduce the flash size a few bytes.
(by comparing flash size reported by .mem files)

I'm really not sure what type of overhead to expect for HAL.

Is there anything I can do to shrink usage but allow use of HAL?
Or alternatively, with 8051 there's no keyword/macro to place functions in eeprom flash?