Search found 9 matches

by tosemusername
Thu Jul 02, 2020 10:33 pm
Forum: ESP-IDF
Topic: Static IP with ESP-NETIF
Replies: 0
Views: 247

Static IP with ESP-NETIF

How to properly do it? Like many parts of IDF, the documentation is lacking, and the only thing I know is that I have to call `esp_netif_set_ip_info` with the DHCP client not running. Is there no way to kickstart the netif library with this information loaded already, or do I really have to start it...
by tosemusername
Wed Jul 01, 2020 2:10 pm
Forum: ESP-IDF
Topic: Ethernet reception delays and unwanted behaviours
Replies: 3
Views: 441

Re: Ethernet reception delays and unwanted behaviours

I'll risk a guess and say it's something related to the OS scheduler plus the fact that `spi_device_queue_trans`, as implied by the name, queues interrupt transactions providing non-blocking transactions, at the expense of time to service the interrupt when the transactions are done. Also, your pre ...
by tosemusername
Wed Mar 18, 2020 2:40 pm
Forum: Documentation
Topic: Clarification on standard python prerequisites
Replies: 0
Views: 4427

Clarification on standard python prerequisites

https://docs.espressif.com/projects/esp-idf/en/latest/get-started/linux-setup.html#install-prerequisites 1- Is the different lists of dependencies per distro due to some of them being already pre-installed on that distro or what? 2- What is the bare minimum? By minimum I mean enough to run 'menucon...
by tosemusername
Mon Sep 30, 2019 7:31 pm
Forum: ESP-IDF
Topic: Timer divider and frequency
Replies: 5
Views: 1710

Re: Timer divider and frequency

Bumping...
by tosemusername
Tue Sep 24, 2019 10:00 pm
Forum: ESP-IDF
Topic: Timer divider and frequency
Replies: 5
Views: 1710

Re: Timer divider and frequency

Awesome. A couple more questions... https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/timer.html#interrupts When handling an interrupt within an interrupt serivce routine (ISR) I don't really get the wording here. Interrupts are handled inside ISRs, right? Since that's ...
by tosemusername
Tue Sep 17, 2019 5:24 pm
Forum: ESP-IDF
Topic: Timer divider and frequency
Replies: 5
Views: 1710

Re: Timer divider and frequency

Oh well, I just posted another closely related question on the forums and I can't find it due to it being submitted to approval, because I thought this one had not been posted and I didn't see any notification until after I did it. I would like the discussion to continue on the other thread, as I go...
by tosemusername
Tue Sep 17, 2019 5:01 pm
Forum: General Discussion
Topic: ESP32 timer
Replies: 1
Views: 602

ESP32 timer

1. What is the point of a prescaler anyway? From what I understand, it scales down the clock count, which basically reduces the resolution of the counter. 2. Why would that be good or intended? There must be a very good reason why hardware makers would put that in a CPU, and why is that? Moving on t...
by tosemusername
Mon Sep 09, 2019 5:50 pm
Forum: ESP-IDF
Topic: Timer divider and frequency
Replies: 5
Views: 1710

Timer divider and frequency

https://docs.espressif.com/projects/esp-idf/en/latest/api-reference/peripherals/timer.html#introduction The ESP32 chip contains two hardware timer groups. Each group has two general-purpose hardware timers. They are all 64-bit generic timers based on 16-bit prescalers and 64-bit up / down counters ...
by tosemusername
Mon Feb 25, 2019 5:52 pm
Forum: ESP-IDF 中文讨论版
Topic: ESP_ERR_NVS_NEW_VERSION_FOUND 错误如何解决
Replies: 4
Views: 3216

Re: ESP_ERR_NVS_NEW_VERSION_FOUND 错误如何解决

If newer firmware (v3.2) sees the NVS partition produced by older firmware, it will automatically update the format of the partition.
What exactly performs this action? And when is it performed?
Is it one of the python scripts at building time, or automatically at boot time? Or what?

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