Search found 6 matches

by ille111
Tue Jul 21, 2020 10:18 am
Forum: ESP-IDF
Topic: Interrupt duration and WiFi
Replies: 3
Views: 3765

Re: Interrupt duration and WiFi

Does anyone have an idea? Without insight into the NIC and its driver it is very hard to find an answer to this question. Is there any possibility of checking weather the expected number of interrupts even occurs?
by ille111
Thu Jul 16, 2020 11:50 am
Forum: ESP-IDF
Topic: Interrupt duration and WiFi
Replies: 3
Views: 3765

Re: Interrupt duration and WiFi

That is not the case, I get the same result wehen running everything on the same core.
by ille111
Wed Jul 15, 2020 9:32 am
Forum: ESP-IDF
Topic: Interrupt duration and WiFi
Replies: 3
Views: 3765

Interrupt duration and WiFi

I am doing some tests to measure the maximum timing impact on my real-time application through wifi-packets. For this I wrote a monitoring task that regularly prints out the lateness of my task (that is the time it takes longer than it should to run). When I prioritize my observed task lower than th...
by ille111
Tue May 05, 2020 2:01 pm
Forum: ESP-IDF
Topic: What ISR is called upon packet receive over WiFi?
Replies: 1
Views: 2614

What ISR is called upon packet receive over WiFi?

Hey everyone, I was wandering if it is possible to see the code that is executed when a network packet is received by a NIC. I want to reconstruct the "way" a packet takes through the kernel until its payload is used by a user task. In the reference manuals I was only able to find programming models...
by ille111
Mon Feb 10, 2020 10:53 am
Forum: Hardware
Topic: Specification of ESP32 NIC
Replies: 3
Views: 4271

Re: Specification of ESP32 NIC

Hi, thanks for the responses so far. Yes, it has to do with interrupts that are generated by the NIC. I want to estimate the maximum "load" of interrupts the NIC produces under a very large number of incoming packets per second. It would be interesting to know if in fact a ring buffer is used and ho...
by ille111
Thu Feb 06, 2020 1:21 pm
Forum: Hardware
Topic: Specification of ESP32 NIC
Replies: 3
Views: 4271

Specification of ESP32 NIC

Hi everyone, I am currently looking into NIC-generated interrupts at the ESP32. Unfortunately, I can't find any specific information about the wifi chip or its firmware. I am interested in information about the throwing of interrupts when packages arrive at the NIC. Are there interrupt moderation te...