Search found 53 matches

by thethinker
Sat Jan 26, 2019 7:48 pm
Forum: Hardware
Topic: PICO-D4 SMA Antenna Matching
Replies: 7
Views: 1526

Re: PICO-D4 SMA Antenna Matching

Hi Guys, Thank you very much for the reply. I think I'm not perfectly describing the question. I do have plenty of stitching and pi network in place and I'm not getting rid of them. My actual question is not about whether or not have them, it's about the actual tuning process. How could one go after...
by thethinker
Wed Jan 23, 2019 11:58 pm
Forum: Hardware
Topic: PICO-D4 SMA Antenna Matching
Replies: 7
Views: 1526

Re: PICO-D4 SMA Antenna Matching

If you want maximum RF performance then a matching network will always help you achieve this. One option is to contact sales and ask for advice from an RF engineer, as Sprite suggests. However, a good place to start first is the ESP32-PICO-KIT reference design which you can find on the espressif.co...
by thethinker
Tue Jan 22, 2019 3:40 am
Forum: Hardware
Topic: PICO-D4 SMA Antenna Matching
Replies: 7
Views: 1526

Re: PICO-D4 SMA Antenna Matching

Please Help
by thethinker
Tue Jan 22, 2019 3:35 am
Forum: ESP32 IDF
Topic: Hardware Interrupt For Flash Protection
Replies: 0
Views: 350

Hardware Interrupt For Flash Protection

Hi, In order to prevent flash corruption, I have been taking extra precautions to minimize flash writes. But when it's time for firmware upgrades (OTA), then there is nothing I can do. However I have a power management IC and a super cap which can let me know about a second before power completely d...
by thethinker
Tue Jan 15, 2019 2:48 am
Forum: Hardware
Topic: PICO-D4 SMA Antenna Matching
Replies: 7
Views: 1526

PICO-D4 SMA Antenna Matching

I'm designing a board with PICO-D4 and SMA connector. I'm also having the PCB fabricated with 50 ohm impedence control on the RF line and my RF line is only 7mm long. Do I need a pi matching network for this? I Would like to mention I'm using this device as a sniffer so I would like to get as accura...
by thethinker
Sun Jan 13, 2019 7:51 pm
Forum: ESP32 IDF
Topic: (Solved) OTA encrypted flash transmission.
Replies: 5
Views: 1243

Re: OTA transmission encryption flash.

I believe there are multiple functions for writing to the Flash. According to: https://demo-dijiudu.readthedocs.io/en/latest/security/flash-encryption.html It says: The ROM function esp_rom_spiflash_write_encrypted will write encrypted data to flash, the ROM function SPIWrite will write unencrypted ...
by thethinker
Sun Jan 13, 2019 12:40 am
Forum: ESP32 IDF
Topic: Details Regarding "Received packet radio metadata header"
Replies: 13
Views: 2769

Re: Details Regarding "Received packet radio metadata header"

I'm still trying to find out how to read this clock. That's the only way I can think of which lets me find the offset between the HW clock and real clock. Please help!!
by thethinker
Sat Jan 12, 2019 11:48 pm
Forum: ESP32 IDF
Topic: esp_eth_disable() crash
Replies: 4
Views: 906

Re: esp_eth_disable() crash

Hmm,
Really ? None of the ESP guys are willing to help?
by thethinker
Sun Jan 06, 2019 10:02 pm
Forum: ESP32 IDF
Topic: esp_eth_disable() crash
Replies: 4
Views: 906

Re: esp_eth_disable() crash

Okay,
I believe here is the bug that no one really ever fixed:
https://github.com/espressif/esp-idf/issues/1246
by thethinker
Sun Jan 06, 2019 8:22 pm
Forum: ESP32 IDF
Topic: esp_eth_disable() crash
Replies: 4
Views: 906

Re: esp_eth_disable() crash

Okay, so turns out the issue was an open UDP socket which is used by "esp_log_set_vprintf()" function (I'm sending logs to a server using udp socket). I believe this is a bug? stopping dhcp client for that socket does the same crash. I solved it by closing the socket first but this should be handled...