Search found 5 matches

by grumpyEngineer12
Wed Feb 02, 2022 3:23 am
Forum: Hardware
Topic: ESP32­WROOM­32E QSPI max flash speed
Replies: 3
Views: 2734

Re: ESP32­WROOM­32E QSPI max flash speed

Sorry, I mean the internal QSPI memory (4MB,8MB,16MB) not PSRAM.

Thanks.
by grumpyEngineer12
Tue Feb 01, 2022 9:42 pm
Forum: Hardware
Topic: ESP32­WROOM­32E QSPI max flash speed
Replies: 3
Views: 2734

ESP32­WROOM­32E QSPI max flash speed

Sorry for the dumb question, but I can't find this information anywhere.

What is the maximum supported speed for the QSPI flash memory inside the ESP32­WROOM­32E?

I'm trying to (and successfully) running at 80Mhz,

Just want to make sure that this is not a fluke.

Thanks!
by grumpyEngineer12
Wed Jan 19, 2022 7:55 am
Forum: ESP-IDF
Topic: Calling esp_spp_write outside of bluedriod callbacks
Replies: 0
Views: 1801

Calling esp_spp_write outside of bluedriod callbacks

Hi Everyone, I'm sorry if this has been answered previously - but I just want to verify some code I wrote today. I am extending the SPP acceptor demo (Classic bluetooth) and I need to trigger writes to the BLE client (on a phone) from a different task. What I did was save a reference to the handle i...
by grumpyEngineer12
Sun Jan 16, 2022 9:32 am
Forum: ESP-IDF
Topic: SNTP accuracy
Replies: 3
Views: 2804

Re: SNTP accuracy

Thank you, mouse is a pretty good idea, creative thinking for sure :) Another idea I had (in-case anyone ever is in the same spot as me) is to put the NTP server on a raspberry pi since then then it's possible to have close to single CPU cycle (well, close enough) of GPIOs. I have enough to go and g...
by grumpyEngineer12
Sun Jan 16, 2022 12:22 am
Forum: ESP-IDF
Topic: SNTP accuracy
Replies: 3
Views: 2804

SNTP accuracy

Hi everyone, excuse the noob question, but I'm trying to analytically determine the largest error possible using the standard LWIP implementation of SNTP which is included. For my use-case I will be running an NTP sever on a local machine on a local network. For me it's very important that the delta...