_paulc
Joined 13 years ago
Karma
208
Submissions
75
Member since
Nov 10
Recent submissions
Comment · 6 days ago
Comment · 3 months ago
I’d completely agree - the transition to and instability of esp-hal has been a complete nightmare and I’ve also given up on trying to keep up with this.
I have transitioned to using the Nordic NRF chips (nrf52840) for my hobby projects which are very well supported by embassy-nrf and have been a pleasure to use and have great (and stable) BLE support. You can also get really cheap boards from AliExpress (search for nrf-micro).
Comment · 7 months ago
Slightly strangely I did see that the .h export does contain temp / press registers (but not the trimming params) but they dont show up in the interactive display:
Comment · 7 months ago
It shows the 0xD0, 0xD0, 0xF3, 0xF4, 0xF5 registers but misses 0xF7-F9 (pressure) and 0xFA-FC (temp) - which are the actual measurement registers - plus all the trimming parameters (0x88-xA1) which you need to calibrate the readings.
Temp (4.3.7) & Press (4.3.6) literally have their own sections in the datasheet.
Comment · 7 months ago
This would be a good idea of it was reliable however browsing the parsed data for the BMP280 [1] (which in familiar with because I’ve written a driver for this) it looks like it misses a bunch of registers [2]
[1] https://regforge.dev/bmp280_xai_grok-4-1-fast-non-reasoning_... [2] https://www.bosch-sensortec.com/media/boschsensortec/downloa...
Comment · 1 year ago
If you need GPIO support on a mini-PC you can just use a cheap FT232H breakout [1] with either PyFTDI [2], which supports pretty much all the protocols you need (UART/GPIO/SPI/I2C), or alternatively use CircuitPython with Blinka [3] which gives you access to the CircuitPython drivers etc.
[1] https://www.adafruit.com/product/2264 [2] https://pypi.org/project/pyftdi/ [3] https://learn.adafruit.com/circuitpython-on-any-computer-wit...
Comment · 1 year ago
> FreeBSD has committed the original sin of UNIX by deliberately dropping support for all non-Intel architectures, intending to focus on optimising FreeBSD for the Intel ISA and platforms.
FreeBSD supports amd64 and aarch64 as Tier 1 platforms and a number of others (RiscV, PowerPC, Arm7) as Tier 2
Comment · 1 year ago
It looks like it is a Direct Conversion (Zero IF) rather than a Direct Sampling Receiver [0] - ie. it uses does a quadrature LO to down convert to baseband I/Q (in this case a Taylor QSD as a mixer). The RP2040 ADC bandwidth is only 250KHz.
[0] https://www.analog.com/en/resources/technical-articles/a-rev...
Comment · 2 years ago
As a long term FreeBSD user (since 2.0) and advocate, my view is that FreeBSD should focus on its niche as a rock-solid server operating system. For most developers buying a MacBook and SSH-ing into a server is probably the right answer (or running a VM if you really need something local). The level of effort to match the MacBook user experience feels like a lost cause (Linux has been trying to do this for decades with significantly more resources) and it would feel more useful to use this funding to focus on the server side.
Comment · 2 years ago
If you want to automate FreeBSD deployments on Hetzner Cloud you can try:
https://github.com/paulc/hcloud-freebsd
(Allows you to provision instances using either the hcloud utility/web uni with ssh key/user-data support)
Comment · 4 years ago
That's really useful (I was trying to work out how to do this without using a custom image) but I would just note that there actually is a FreeBSD 13.1 image available under Images -> Partner Images -> FreeBSD (from the FreeBSD Foundation).
Oracle Cloud have a very generous free-tier for the arm64 boxes and I'm running 2 x arm64 instances (2 CPU / 12GB RAM each) - been really reliable so far though I'm not doing that much on them.
Comment · 4 years ago
If you want a simple lightweight symmetric crypt CLI utility try ccrypt:
Comment · 4 years ago
The Colossus tape reader could read at c.5000 cps (with the tape running at 27mph [1]) - which is 2.5 x faster (and 20 years before). Worth seeing the replica Colossus at Bletchley if you get a chance.
Comment · 4 years ago
Keep trying apparatchik - we’re not all as weak and stupid as you think.
I didn’t see the ch32 firmware in the repository - the ch32v003 only has 1 i2c peripheral - assume you are bit-banging the others?
[1] https://www.youtube.com/@bitluni