As discussed in a previous port, I’m working on some RFID library. As mentioned, it started out with some code I’ve used for a project years ago. That code capable of reading the UID of a card, but it’s rather rough. For example, it can only handle 4 byte UID cards, and won’t cascades to…
Introducing BlaatSchaap RFID
As I’ve mentioned in a previous post, I’ve looked through my collection of electronics and found some RFID readers. And I’ve decided to write yet another library to read those. There are plenty of Arduino libraries out there, but I’m not an Arduino guy. Most of the libraries out there are Arduino. Some others are…
More random ramblings, displays and rfid.
Some more random ramblings from me. What’s been going on? I’ve been working on this job for a customer involving a ST7735 based TFT display. As for controlling this display, I went with ucglib, as it seemed suitable. It supports many types of displays, and it’s under a BSD license, so the license doesn’t pose…
Some random ramblings about Blue Pills and stuff.
Hello there, these will be some random ramblings about Blue Pills and stuff. Not a fully written article or so. But well… when I was searching for Blue Pills on eBay and AliExpress the other day, I found that the price of Blue Pills on eBay has risen, but is still low on AliExpress. On…
I’ve released the magic smoke
I’ve released the magic smoke. What happened here? These are the remains of an MT2492. This is a step-down converter. This chip was located on a breakout board, taking 12 Volt input, and outputting 5 Volt. I’ve designed this board last year. Unfortunately, I’ve lost the KiCad files in a hard disk crash. Nevertheless, it’s…
Adding pages
Just a quick update: I’ve started adding pages to this site. The pages are still a work in progress, and more information will be added. I have made some pages about various boards, such as the Blue Pill, Black pill, etc. Furthermore, I’ve started some pages about peripherals, such as screens and sensors. I’ll be…
32F103 Comparison (part 4)
This is a quick post about the *32F103 comparison. When talking about my comparison on IRC, I was asked if I could run the Blinky test from the Greaseweazle project. It looks like an interesting project I’ll need to check out in the future. Looking at the description of that test, it’s gonna toggle PC13…
ROMTABLE Addresses
I’ve been mentioning the ROMTABLE in a previous post. So, what is going on with the ROMTABLE? At first I looked at the ARM Debug Interface Architecture Specifications, where it stated in the MEM-AP, the BASE register contains a pointer to the ROMTABLE. As this is only available to the debugger and not from within…
32F103 Comparison (part 3)
Update 2020-06-14: Added HK32 Hello there. This is a follow up on the comparison for the *32F103 parts. We’ve got the STM32F103C8T6, GD32F103C8T6, HK32F103CBT6, CS32F103C8T6 and APM32F103C8T6. As seen in part 2, there are some differences in how they identify themselves to the debugger. Now I’ll have a look at the ROMTABLE. I can query…
DMA driver for WS2812-compatible LEDs
A few years ago I discussed WS2812-compatible (ws2812, sk6812, pd9823, …) LEDs https://andre.blaatschaap.be/2017/03/led-there-be-light-part-1/ https://andre.blaatschaap.be/2017/07/led-there-be-light-part-2/ https://andre.blaatschaap.be/2017/07/led-there-be-light-part-3/ https://andre.blaatschaap.be/2017/07/led-there-be-light-part-4/ Back in the days, I’ve discussed a few code snippets, but I’ve never came around on releasing the firmware I’ve wrote back in the days. Now I’ve uploaded the old code from back in those days to https://github.com/BlaatSchaapArchive/LEDcontroller. This…
Radio BlaatSchaap
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