Search found 11 matches

by bienvenu
Mon Dec 05, 2016 1:50 am
Forum: General Discussion
Topic: FCC ID 2AC7Z-ESP32
Replies: 2
Views: 1533

Re: FCC ID 2AC7Z-ESP32

Figure 2-1 of 'ESP32_Certification_and_Test_Guide__EN.pdf' shows no antenna connection as the correct test setup for certification - that seems unlikely!
Capture.PNG
Capture.PNG (12.13 KiB) Viewed 633 times
by bienvenu
Fri Dec 02, 2016 7:46 am
Forum: General Discussion
Topic: Usable flash size / maximum partition size
Replies: 0
Views: 204

Usable flash size / maximum partition size

Hi, I'm wondering whether we need a 32mbit flash, or if a 16mbit flash will suffice. For my application, I shouldn't need to store large chunks of data, just two OTA partitions. I see I need to set aside the first 64KB for the bootloader/partition table etc, and that app partitions need to be 64KB a...
by bienvenu
Tue Dec 29, 2015 2:57 pm
Forum: Report Bugs
Topic: Sporadic boot failure, >400mA draw
Replies: 2
Views: 1533

Re: Sporadic boot failure, >400mA draw

I wasn't able to reproduce this issue today (without your patch), so I can't confirm the fix. Not sure what's changed.

I'll make sure to try the fix out when it crops up again.
by bienvenu
Wed Dec 23, 2015 2:41 pm
Forum: Report Bugs
Topic: Sporadic boot failure, >400mA draw
Replies: 2
Views: 1533

Sporadic boot failure, >400mA draw

Occasionally (maybe one in 10~20 boots) I see the ESP31 fail to boot and draw a very high amount of current - I've seen between 450mA and 550mA (different for different occurrences). Repro: power cycle the module and look at the input current. I guess it's getting stuck in the PA calibration process...
by bienvenu
Sat Dec 19, 2015 12:46 am
Forum: General Discussion
Topic: Station mode instability - bcn_timout,ap_probe_send_start
Replies: 9
Views: 2520

Re: Station mode instability - bcn_timout,ap_probe_send_start

I'm using an external AP - an Apple Airport Express. Laptop isn't sleeping.
by bienvenu
Sat Dec 19, 2015 12:46 am
Forum: General Discussion
Topic: Flash Tool
Replies: 25
Views: 6891

Re: Flash Tool

rudi ;-) wrote:btw, read in, test yours and let me know.
viewtopic.php?f=14&t=62

but i think yours is running now?
best wishes
rudi ;-)


After you mentioned hot air, I gave the ESP31 IC a quick reflow and it has worked since. Thanks for the tip :)
by bienvenu
Fri Dec 18, 2015 7:54 am
Forum: General Discussion
Topic: Station mode instability - bcn_timout,ap_probe_send_start
Replies: 9
Views: 2520

Station mode instability - bcn_timout,ap_probe_send_start

I have a simple station mode app, and a laptop pinging the ESP31. I frequently see the ESP31 failing to maintain AP connection, with logs like this: dhcp client start... ip:192.168.1.103,mask:255.255.255.0,gw:192.168.1.1 <some time later> bcn_timout,ap_probe_send_start <a short time later> ap_probe_...
by bienvenu
Thu Dec 17, 2015 6:01 am
Forum: General Discussion
Topic: Flash Tool
Replies: 25
Views: 6891

Re: Flash Tool

rudi ;-) wrote:first time, the esptool have no response,
after little tests and patching then MAC is response:

@bienvenue
try to deconnect the TX/RX to the USB if you reconnect the modul


What did you do to get it to work, specifically? (The "little test and patching".)
by bienvenu
Thu Dec 17, 2015 2:19 am
Forum: General Discussion
Topic: Flash Tool
Replies: 25
Views: 6891

Re: Flash Tool

It sounds like rudi has the same issue as me - the ESP32 (ESP31B?) acts deaf in flash download mode. EDIT: Update - I see continuity between breakout pin 34 and ESP31 pin 37, which is listed in the specifications as U0RXD (page 13, "Figure 2-2. ESP31 (Beta Version) Pin Layout"). Pad 37 see...
by bienvenu
Wed Dec 16, 2015 2:55 pm
Forum: General Discussion
Topic: Flash Tool
Replies: 25
Views: 6891

Re: Flash Tool

Thanks rojer9. $ ./esptool32.py --port /dev/tty.usbserial-FTH159YK read_mac Connecting... Traceback (most recent call last): File "./esptool32.py", line 557, in <module> esp.connect() File "./esptool32.py", line 171, in connect raise Exception('Failed to connect') Exception: Fail...