Search found 115 matches

by blubb
Thu May 21, 2020 3:03 pm
Forum: ESP8266 SDK
Topic: exception at 4000df2f (memcmp)
Replies: 7
Views: 6450

Re: exception at 4000df2f (memcmp)

Is that the original code? I cannot use libmbedtls with this lwip version.
by blubb
Sat May 16, 2020 10:08 pm
Forum: ESP8266 SDK
Topic: esp-now: How can I find out if a message is encrypted or not?
Replies: 0
Views: 2145

esp-now: How can I find out if a message is encrypted or not?

My project switches devices on and off and is not necessarily logged onto a WiFi. So I thought esp-now is worth a try. For security reasons I need encryption so that no unauthorized sender can switch on/off my device. My understanding is that I need to register the possible receivers using esp_now_a...
by blubb
Tue Mar 24, 2020 3:15 am
Forum: ESP8266 SDK
Topic: exception at 4000df2f (memcmp)
Replies: 7
Views: 6450

Re: exception at 4000df2f (memcmp)

It happens only after calling system_upgrade_reboot() but just BEFORE the actual reset. The reason in my case seems to be a timer which can fire during this short moment. I check for WiFi disconnection regularly and since system_upgrade_reboot() disconnects, the timer then tries to reconnect... Root...
by blubb
Thu Mar 19, 2020 10:08 pm
Forum: ESP8266 SDK
Topic: exception at 4000df2f (memcmp)
Replies: 7
Views: 6450

Re: exception at 4000df2f (memcmp)

Any news on this exception? I keep getting it, too, sometimes when rebooting after an OTA update. Is there a way to find out what is at address 0x33? I noticed other people having the same issues, e.g. https://bbs.espressif.com/viewtopic.php?t=2934 https://bbs.espressif.com/viewtopic.php?t=5784 http...
by blubb
Fri Nov 16, 2018 10:22 pm
Forum: ESP8266 SDK
Topic: wifi_set_listen_interval is counter-productive
Replies: 3
Views: 1744

Re: wifi_set_listen_interval is counter-productive

I recommend posting this kind of problem as an issue in github:
https://github.com/espressif/ESP8266_NONOS_SDK

The forum is not as active as it used to be... :(
by blubb
Fri Oct 19, 2018 6:06 am
Forum: ESP8266 SDK
Topic: Firmware upgrade
Replies: 6
Views: 2932

Re: Firmware upgrade

Then use system_upgrade_userbin_check().
by blubb
Tue Oct 16, 2018 4:24 am
Forum: ESP8266 SDK
Topic: Firmware upgrade
Replies: 6
Views: 2932

Re: Firmware upgrade

system_get_userbin_addr()
by blubb
Wed Sep 26, 2018 1:37 am
Forum: ESP8266 SDK
Topic: Disconnect Callback not triggered
Replies: 3
Views: 2487

Re: Disconnect Callback not triggered

You need to put "Connection: close\r\n" in your request.
by blubb
Wed Aug 15, 2018 8:11 am
Forum: ESP8266 SDK
Topic: LoadStoreErrorCause help
Replies: 5
Views: 3954

Re: LoadStoreErrorCause help

You have to read 4 bytes at once always. If you try to read only 1 or 2, a crash is normal behavior.
by blubb
Wed Aug 08, 2018 6:51 pm
Forum: ESP8266 SDK
Topic: Measuring Battery Life
Replies: 7
Views: 4077

Re: Measuring Battery Life

Then just write

system_get_vdd33() * 1000L / 1024

Same result (because 1 << 10 == 2 ^ 10 == 1024)

Go to advanced search