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  1. stm8ef stm8ef Public

    STM8 eForth - a user friendly Forth for simple µCs with docs

    Assembly 307 65

  2. W1209 W1209 Public

    W1209 data logging thermostat with an STM8 eForth interactive console

    Forth 31 12

  3. stm8ef-modbus stm8ef-modbus Public

    A lightweight framework for MODBUS RTU nodes in STM8 eForth that can do more than just I/O

    C++ 30 12

  4. stm8s001rs485 stm8s001rs485 Public

    A narrow KiCad made PCB with STM8S001J3, RS485 driver and DS1621S Thermometer, e.g., for STM8EF-MODBUS

    18 5

  5. IR Remote Control for an RGBW LED Bu... IR Remote Control for an RGBW LED Bulb with STM8 eForth
    1 
    # STM8 eForth: IR Remote Control for an RGBW LED Bulb
    2 
    These days IR remote control is still the cheapest option for consumer electronics.
    3 
    I've long had the idea that Forth is ideal for scripting IR remote-controlled devices and I used the light bulb at my desk to learn how to do that with STM8 eForth.
    4 
    LED lamps of relatively high quality with a combination of white LED and RGB LEDs have a remarkable low price tag: the set below [costs no more](https://www.aliexpress.com/item/32884777814.html) than a regular white LED lamp.
    5 
    In my experience service life is much better (maybe due to a switched mode power supply with constant DC voltage and µC PWM control). The option for occassional colorful illumination is a bonus.
  6. STM8L051F3: low-power Forth console ... STM8L051F3: low-power Forth console experiments
    1 
    # STM8L051F3: a low power Forth console
    2 
    In the stopped state the STM8L needs just a few µA - but in this state the console can't wake up the device:
    3 
    the USART gets no clock. Only GPIO interrupts and peripherals that are clocked from the LSI or the LSE will work!
    4 
    A possible solution is a pin-change interrupt on RxD for waking the core - and the USART - up.
    5 
    In "Active-Halt" mode RTC and WUT peripherals run on 38kHz LSI or 32.768kHz LSE clock (see [here](https://gist.github.com/TG9541/0a71928f36e29ba92af34ec4312f2b25)). This means that it's possible to have a background task without keeping the core busy.