Search found 24 matches

by Rocker
Sun Jun 10, 2018 7:24 pm
Forum: ESP-IDF
Topic: Problem with WiFi AP Mode and tablet
Replies: 5
Views: 2477

Re: Problem with WiFi AP Mode and tablet

Thanks. That's not quite it, but you could be on to something. I have a Dell laptop that does great using the ESP32 as an AP. But most tablets don't. However, I did a wireshark capture and saw many attempts by the tablet to use the ESP32 as a gateway for messages to internet destinations. I didn't s...
by Rocker
Thu Jun 07, 2018 11:56 pm
Forum: ESP-IDF
Topic: Problem with WiFi AP Mode and tablet
Replies: 5
Views: 2477

Re: Problem with WiFi AP Mode and tablet

I'm getting a lot of message drops (TCP/IP) going from the ESP to a tablet. I'm speculating that ties up all the ESP32 buffers waiting for ACKs to come back, resulting in send() blocking. Regardless, the destination does not receive the data unless the packet rate is very low. This doesn't only happ...
by Rocker
Tue Jun 05, 2018 2:21 pm
Forum: ESP-IDF
Topic: Problem with WiFi AP Mode and tablet
Replies: 5
Views: 2477

Re: Problem with WiFi AP Mode and tablet

I had a friend recommend looking at whether the tablet and laptop connected to the ESP in different modes. In fact, the tablet connects in 802.11g, while the laptop connects in 802.11n. Is there a way to force the ESP to only use 802.11n? I'm not sure that this even makes a difference, but it would ...
by Rocker
Sun Jun 03, 2018 6:34 pm
Forum: ESP-IDF
Topic: Problem with WiFi AP Mode and tablet
Replies: 5
Views: 2477

Re: Problem with WiFi AP Mode and tablet

I did test v3.0 of the IDF and had the same results in AP mode.
by Rocker
Sun Jun 03, 2018 4:20 pm
Forum: ESP-IDF
Topic: Problem with WiFi AP Mode and tablet
Replies: 5
Views: 2477

Problem with WiFi AP Mode and tablet

I'm using the 2.1 version of the IDF using the ESP32 WROOM module on a custom board. I have things set up to operate in AP mode or STA mode (AP mode when another router is not available). When in AP mode, I can connect and talk to my laptop just fine. I'm sending a number of small data packets (arou...
by Rocker
Sun Apr 22, 2018 9:32 pm
Forum: ESP-IDF
Topic: Can't get IP (intermittent)
Replies: 3
Views: 2186

Re: Can't get IP (intermittent)

Kolban,
Things did work fine on another network. On the original network on a different computer, I received a "multiple computers having the same IP address" message. I cleaned out some of the DHCP entries on my router, then it worked fine. Thanks for the help!
by Rocker
Tue Mar 27, 2018 7:56 pm
Forum: ESP-IDF
Topic: Can't get IP (intermittent)
Replies: 3
Views: 2186

Can't get IP (intermittent)

I am running a fairly vanilla setup where I try to connect to my home router (SilverShark). A lot of the time, I will get a valid IP address very quickly. However, sometimes I don't. I had the following console dump on one of these occasions. It looks like everything is fine. The wifi module said it...
by Rocker
Sat Oct 21, 2017 9:46 pm
Forum: General Discussion
Topic: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects
Replies: 7
Views: 5564

Re: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects

I talked with the sales engineer from my distributor. He said that there is one radio. Therefore, you can not do both simultaneously, though you might be able to switch back and forth between them fairly quickly. That doesn't work for my application. Can someone from espressif confirm/deny that ther...
by Rocker
Thu Oct 19, 2017 11:47 pm
Forum: General Discussion
Topic: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects
Replies: 7
Views: 5564

Re: Simultaneous WiFi and Bluetooth: Paket loss and WiFi disconnects

I'm seeing something very similar. When I tried to start classic BT and WiFi at startup, I wouldn't get a WiFi address. If I pulled the BT out, I would. If I delayed initializing BT, the WiFi would connect. However, as soon as BT started, I received: Wifi: bcn_timout,ap_probe_send_start then, wifi: ...
by Rocker
Fri Sep 29, 2017 2:43 pm
Forum: ESP-IDF
Topic: i2s interface confusion / i2s_write_bytes
Replies: 2
Views: 2079

Re: i2s interface confusion / i2s_write_bytes

As a follow-on to this, how is the driver user supposed to know when the transmit buffer needs more data. I see the interrupt handler in i2s.c which has an underrun case, but I don't know how that is supposed to get relayed on to the driver's user so that the application can send more data buffers t...

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