jsokol805/stc15clock

replacement software for cheap chinese DIY led clock based on STC15W404AS MCU

stc15clock

Replacement software for cheap chinese DIY led clock based on STC15W404AS MCU

Building

Compiler of choice is sdcc, avaliable on virually every platform. As my development envirnoment is based on Linux, this is the only OS currently tested.

Simply go into src directory, run make and you should get stc15clock.hex ready to be flashed onto MCU.

Configuration

There are currently two hardware revisions supported, but further compile-time configuration has to be made in src\stc15_display.h. For display to function correctly you need to specify how common display pin should be driven (LOW or HIGH state).

• rev.A - integrated 4 digit display, without transistors for driving the display - COMMON_PIN_ACTIVE_STATE = 1
• rev.B - 4 single digits displays, with transistors present - COMMON_PIN_ACTIVE_STATE = 0

Schematics for both revisions are avaliable in docs folder.

Flashing

I'm using stcgal (https://github.com/grigorig/stcgal) for uploading code to the device

stc15clock's Issues

make use of more components on board

currently unused:

• thermistor
• buzzer

led display blinks

separate activation/deactivation levels seems to not work as intended

P3 bit Configuration not correct in _digit()?

hello, I like your project and also have a DIY Clock with the STC15W404AS. Flashed your program on mine and the digits are not shown correctly. After changing two lines in _digit() method to
P3 |= 0x3C;
P3 &= ~(4 << (3 - pos));
the digits are now shown correctly. Do you have the same issue?

add schematics for clock

improve code documentation

Get rid of L42 in stc15_buttons

This is horribly unreadable and will result in many unhappy readers (including future-me)

Need HEX file please

I want HEX file that I can upload to MCU. I have STC15F204EA Chip in the pcb. Pl send as I do not have knowledge to use compilers

I want main.hex and eeprom.hex file

Hello.
I want main.hex and eeprom.hex file that I can upload to MCU.
I have STC15W404AS Chip in the pcb. I do not have knowledge to use compilers.
I use the STC-ISP program v6.86U
Thanks.

improve dimming routine

• store thresholds in DS1307 ram

Add setting indicators (so you can tell if you're setting activation or deactivation threshold)

We have one digit that's unused - it would be perfect for this.

low display brightness

orginal software had much more brightness, even in low-light mode

ds1302_increase_minute shouldn't affect hours