Скачать или смотреть Simple AD9833 DDS based signal generator

This is a simple AD9833 DDS based signal generator I made as a weekend project.

It uses an STC15W404 as the microcontroller, an 8 digit serial 7-seg LED module, a Rotary encoder, and a Buck regulator for power.

PlatformIO was used as the build system using the intel_mcs51 platform.
This uses SDCC as the C compiler. The STC chips have a built-in ISP
and only need a TTL serial connection to program them from the ISP tool
that PlatformIO uses (stcgal). No other ISP adaptor or programmer needed.

No extra libraries are needed to compile it.

Parts:
MCU: STC15W404AS SSOP20
Max 7219 serial LED driver - 8 digit module
Keyes Rotary encoder module
Buck regulator set to 5v

Code can be found here: https://pastebin.com/hYZgf4wX
Schematics found here: https://pasteboard.co/JLsTEh2.png