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hardware timestamps

A collection of 9 posts

teensy

Teensy 4.1 ethernet

I'm a fan of the Teensy line of microcontrollers. I have a whole pile of them for various projects. When I saw that 4.1 was combining a 600MHz processor, 1MB ram, 8MB

  • Dan Drown
3 min read
ntp

Embedded NTP Server

Now that I got the results I wanted from my embedded NTP client, I wanted to convert it to an NTP server.  I also wanted it to support interleaved NTP mode, so it

  • Dan Drown
3 min read
ntp

Embedded NTP client/NTP interleaved mode, part 5

I'll test what happens when I plug my embedded NTP client directly into my NTP servers, bypassing the Ethernet switch.  This ends my long running embedded NTP client series. The systems involvedEmbedded NTP

  • Dan Drown
3 min read
ntp

Embedded NTP client/NTP interleaved mode, part 3

Previous posts: part 1, part 2 In this post, I wrap up my embedded NTP client and use it to measure the difference between my other two NTP servers with hardware timestamps. Goal

  • Dan Drown
5 min read
stm32

Debian for STM32MP1

I bought a STM32MP1 dev board because it has a gigabit NIC with 1588 PTP timestamps as well as hardware timers that can timestamp PPS events without interrupt latency and jitter.  I am

  • Dan Drown
2 min read
ntp

Embedded NTP client/NTP interleaved mode, part 2

Hardware transmit timestamps added to NTP client.

  • Dan Drown
2 min read
ntp

Embedded NTP client/NTP interleaved mode

NTP client with hardware timestamps

  • Dan Drown
4 min read
ntp

APU2 NTP server

I bought an apu2c0. I believe it will make a better NTP server than my other NTP servers.

  • Dan Drown
3 min read
gps

Beaglebone Black timer capture driver

More info on: Hardware, Kernel Driver software The Beaglebone Black has a hardware timer capture. This means it can save the couter value at the time an input edge happens. Since it has

  • Dan Drown
2 min read
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