Sunday, December 13, 2020

Trying to test a "ten cent" tiny ARM-M0 MCU

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  A few months ago, while browsing LCSC , I found a surprisingly cheap ARM M0 MCU .  At the time it was 16.6c in single-unit quantities, wit...
Monday, December 7, 2020

STM32 Starting Small

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  For software development, I often prefer to work close to the hardware.  Libraries that abstract away the hardware not only use up limited...
2 comments:
Monday, October 5, 2020

LGT8F328P EDMINI board

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Earlier this year I purchased a EDMINI board from Electrodragon .  It uses a LGT8F328P chip, which supports the AVR instruction set.  The in...
4 comments:
Thursday, September 17, 2020

Recording the Reset Pin

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  The AVR reset pin has many functions.  In addition to being used as an external reset signal, it can be used for debugWire , and it is use...
Sunday, September 6, 2020

Flashing AVRs at high speed

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  I've written a few bootloaders for AVR MCUs, which necessarily need to modify the flash while running.  The typical 4ms to write or ...
Thursday, August 27, 2020

Hacker's Intro to USB hardware

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  Low-speed 1.5Mbps and full-speed 12Mbps USB, while more complicated than a UART , are still hacker-friendly.  As the standard approaches 2...
Thursday, July 2, 2020

Getting started with the WCH CH551 and CH552

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When I first read about the CH554 series of MCUs , I thought it would be interesting to test out some day.  Part of the attraction is that...
14 comments: