Search found 9 matches
- Wed Dec 14, 2022 4:50 am
- Forum: General Discussion
- Topic: If we can create a "Gatway I2C" to extend i2c protocol wireless ! ?
- Replies: 4
- Views: 2523
Re: If we can create a "Gatway I2C" to extend i2c protocol wireless ! ?
Very unlikely. I2C is a transactional protocol with very specific hardware timing requirements. For example, if an I2C master attempts to read from an I2C slave, it expects a response on a very specific set of SCL clock edges. It would not be practical to relay such a message wirelessly, query a rem...
- Wed Dec 14, 2022 4:32 am
- Forum: General Discussion
- Topic: ESP32 MAC address does not match AP MAC address
- Replies: 1
- Views: 1857
ESP32 MAC address does not match AP MAC address
Greetings, We are using the ESP32-WROVER-B with esp-idf v3.3.6 and have noticed an issue we can't explain: When we read the MAC address from the ESP32 WiFi interface in STA mode using the esp_wifi_get_mac() function, the value returned does not match the MAC address reported by the AP point it is co...
- Sat Dec 12, 2020 4:21 am
- Forum: ESP-IDF
- Topic: Failure to connect to SSID with spaces in them
- Replies: 10
- Views: 18716
Re: Failure to connect to SSID with spaces in them
I just want to know that how it is problem with one access point. can you please clarify for the same? To clarify, we had a specific 3rd party access point (not an ESP32) that was causing problems and preventing our ESP32 STA from connecting. The SSID on this AP had a special character that was cau...
- Wed Nov 18, 2020 4:45 am
- Forum: ESP-IDF
- Topic: Failure to connect to SSID with spaces in them
- Replies: 10
- Views: 18716
Re: Failure to connect to SSID with spaces in them
After further testing, this does not appear to be an issue with esp-idf but rather a problem with one access point.
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- Sat Nov 14, 2020 10:49 pm
- Forum: ESP-IDF
- Topic: Failure to connect to SSID with spaces in them
- Replies: 10
- Views: 18716
Re: Failure to connect to SSID with spaces in them
Hello All, Apologies for the necropost here, but I'm facing a similar issue: It seems that my ESP32 devices cannot connect when the SSID contains both a space and a period (.) in the SSID: Failing SSID example: MY 2.4 GHZ Working SSID example: MY2.4GHZ Working SSID example: MY 24 GHZ This is easily ...
- Fri Jan 17, 2020 4:05 am
- Forum: ESP-IDF
- Topic: HTTP Authentication fails when using config with username, password entry
- Replies: 8
- Views: 15121
Re: HTTP Authentication fails when using config with username, password entry
Folks: I had the exact same issue as the original post. Good news: your can ignore all the workarounds in this thread - it's been fixed in esp-idf release v3.3.1: https://github.com/espressif/esp-idf/releases/tag/v3.3.1 From the HTTP Client release notes: Fixed issue where calling esp_http_client_se...
- Tue Sep 24, 2019 1:30 am
- Forum: Hardware
- Topic: ESP32 Flash SPI Speed Issues
- Replies: 4
- Views: 6022
[solved[ Re: ESP32 Flash SPI Speed Issues
ESP_Sprite:
You're right on the money: I had an I2C device hanging off of GPIO21 and 22 which also happen to be used by SPI flash on the ESP32-WROVER. This was causing my SPI Flash to be very flaky.
Removing my device from those two GPIOs cleared everything up.
Thanks for the pro-tip!
-AD
You're right on the money: I had an I2C device hanging off of GPIO21 and 22 which also happen to be used by SPI flash on the ESP32-WROVER. This was causing my SPI Flash to be very flaky.
Removing my device from those two GPIOs cleared everything up.
Thanks for the pro-tip!
-AD
- Sat Sep 21, 2019 9:15 pm
- Forum: Hardware
- Topic: Entering automatic bootloader with esp32_devkitc (without using usb)
- Replies: 3
- Views: 5733
Re: Entering automatic bootloader with esp32_devkitc (without using usb)
Ignoring flashing for a moment, do you see anything on your USB-Serial adapter? You should see some form of debug output when you power up the device. If not, then you'll want to verify your TX/RX connections aren't swapped, UART is configured to the correct baud rate (e.g. 115200 8-N-1), etc. When ...
- Sat Sep 21, 2019 5:50 am
- Forum: Hardware
- Topic: ESP32 Flash SPI Speed Issues
- Replies: 4
- Views: 6022
ESP32 Flash SPI Speed Issues
Hey everyone, I have an ESP32-WROVER-B on multiple custom PCBs with an issue I can't explain: - If I set the menuconfig -> Serial flasher config -> Flash SPI speed to 26, 40, or 80MHz I can flash an image successfully but I will receive a checksum error when the device reboots - If I set the menucon...