New board has common anode LED display

mister-grumbler / w1209-firmware

The functional eqivalent to the original firmware of "Digital Thermostat Module Model XH-W1209".

GNU General Public License v3.0

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New board has common anode LED display #19

Open zcsahok opened 6 years ago

zcsahok commented 6 years ago

I have recently purchased a board on Ali and uploading your firmware produced a randomly garbled display.

I turns out that my board has a common anode (CA) LED display (p.n. TUSO-02803-U) as opposed to the common cathode (CC) display on the earlier boards.

The assignment of following pins was changed

Pin	Original (CC)	New (CA)
SEG_B	PA.2	PB.5
SEG_F	PA.1	PB.4
DIGIT_1	PB.4	PA.2
DIGIT_2	PB.5	PA.1

For the CA display the segments are active low and the digits are active high.

With the above changes firmware works as expected, thanks for sharing it.

mister-grumbler commented 5 years ago

Thank you for the report. And sorry for such a big delay. Could you please attach pictures (both sides) of your board? I wish to put them on WiKi with appropriate comments. If it possible, put the board over white paper when taking a picture. Thank you in advance for that!

Regarding code modifications: I will make appropriate changes and place them within #ifdef macros. So it will be possible to choose the type of LED display during compilation.

zcsahok commented 5 years ago

Please check this wiki summarizing the variants: https://github.com/TG9541/stm8ef/wiki/W1209-Identifying-'compliant'-boards

mister-grumbler commented 5 years ago

Thank you very much for your participation!