Search found 11 matches

by crackwitz
Thu Apr 11, 2024 7:15 am
Forum: General Discussion
Topic: [IoT] ESP Product Selector IoT Espressif
Replies: 3
Views: 5073

Re: [IoT] ESP Product Selector IoT Espressif

My colleagues are interested in RISC-V. Unfortunately, the product selector doesn't appear to let you filter for the CPU type (Xtensa or RISC-V). Could that please be added to the product selector? We're also interested in integrated Ethernet MAC. So far, that's only on the ESP32 classic (says the p...
by crackwitz
Mon Dec 11, 2023 4:56 pm
Forum: ESP-IDF
Topic: ethernet: need to configure two PHYs over internal MAC, but send no data
Replies: 5
Views: 30180

Re: ethernet: need to configure two PHYs over internal MAC, but send no data

We're talking about SMI here. That's for control, getting/setting registers in the PHYs. It's not for sending data. If you want to send data, you'd want to use the regular Ethernet stack, which sends data to and from the PHY via some MII. PHYs can talk about 2.5 MBit/s or even 25 Mbit/s on SMI. With...
by crackwitz
Sun Dec 03, 2023 10:26 pm
Forum: General Discussion
Topic: LLVM for Xtensa
Replies: 11
Views: 56855

Re: LLVM for Xtensa

You know what would thrill me? Running a Julia REPL on an ESP32. Julia uses LLVM to compile inputs to the REPL. That would probably need LLVM to run on the ESP32 itself.

Just a thought ;)
by crackwitz
Thu Oct 26, 2023 2:04 pm
Forum: General Discussion
Topic: slow UART write
Replies: 3
Views: 3152

Re: slow UART write

Yes, how did you?
by crackwitz
Fri Sep 15, 2023 5:43 pm
Forum: ESP-IDF
Topic: custom transport to carry MQTT over CAN/TWAI
Replies: 2
Views: 3779

Re: custom transport to carry MQTT over CAN/TWAI

Thanks for the brainstorming. abstraction API on top of MQTT That sounds reasonable and would happen entirely in user code. I think I'll follow your suggestion. Anything that would require me to change esp-idf would be near impossible to keep straight. I have upstreamed minor changes to esp-idf befo...
by crackwitz
Thu Sep 14, 2023 9:15 pm
Forum: ESP-IDF
Topic: custom transport to carry MQTT over CAN/TWAI
Replies: 2
Views: 3779

custom transport to carry MQTT over CAN/TWAI

Hi! In short: I'll need a custom transport to carry MQTT, which is not TCP-based. Is that doable? If yes, how could I do that, in broad strokes? I have a work project that uses MQTT in an ESP32. That works well over Ethernet. They now need the MQTT to be carried over CAN Bus. The "other side" has no...
by crackwitz
Fri Oct 14, 2022 1:22 pm
Forum: ESP-IDF
Topic: ethernet: need to configure two PHYs over internal MAC, but send no data
Replies: 5
Views: 30180

Re: ethernet: need to configure two PHYs over internal MAC, but send no data

Thanks!

I've got it working. Not as clean as I'd hoped, and a bit of an adventure in the innards of IDF/HAL/LL, but simple in the end :)
by crackwitz
Fri Sep 30, 2022 3:21 pm
Forum: ESP-IDF
Topic: ethernet: need to configure two PHYs over internal MAC, but send no data
Replies: 5
Views: 30180

ethernet: need to configure two PHYs over internal MAC, but send no data

Hi. I'm planning to connect an ESP32 to two Ethernet PHYs, but only the SMI (MDC+MDIO) and reset pins, not the data plane ( see docs ). For the data plane, both PHYs are cross-connected. I don't need the `netif` parts of esp-idf for this. I need to configure those PHYs, i.e. read and write registers...
by crackwitz
Thu Nov 18, 2021 11:54 am
Forum: ESP-IDF
Topic: Wifi FTM and external APs
Replies: 2
Views: 3039

Re: Wifi FTM and external APs

According to https://people.csail.mit.edu/bkph/ftmrtt_aps Google WiFi only does FTM on the 5 GHz band, not the 2.4 GHz one. ESP32 currently only do 2.4 GHz WiFi.
by crackwitz
Fri Oct 22, 2021 11:26 am
Forum: ESP-IDF
Topic: Fail test Wi-Fi FTM RTT with ESP32-S2 and Android Smartphone (over 9)
Replies: 6
Views: 5888

Re: Fail test Wi-Fi FTM RTT with ESP32-S2 and Android Smartphone (over 9)

I'm trying this on v4.3.1 and it still doesn't work right.

The app says "Requesting...".

I can only get it to show any values when my phone tries to connect to the ESP32-S2 running the ftm example.

I've experienced some kind of rate limit even between ESP32. Maybe it's that.