Search found 18 matches

by zjustin
Thu Mar 21, 2024 3:29 am
Forum: ESP-IDF
Topic: ESP32S3 FOTA using GSM Module
Replies: 10
Views: 3063

Re: ESP32S3 FOTA using GSM Module

I am keen to explore this too,
May I know if there was some success to this since the last update ?
by zjustin
Tue Feb 14, 2023 2:21 am
Forum: ESP-IDF 中文讨论版
Topic: 低功耗文档编写意见收集
Replies: 7
Views: 3985

Re: 低功耗文档编写意见收集

这个文档出来了吗?
by zjustin
Tue Feb 14, 2023 2:18 am
Forum: ESP-IDF 中文讨论版
Topic: ESP32-C3 light-sleep 模式功耗问题
Replies: 8
Views: 7859

Re: ESP32-C3 light-sleep 模式功耗问题

"hi, 在保持连接的情况下 可以增大连接间隔 降低 ble功耗,我们有测过在连接间隔为1000 ms 时,C3的平均电流在 800 uA左右,这个数据 仅作为一个参考。 连接间隔可以继续增大,这样会使 平均电流继续降低" 请问这个800µA 的实验, 是用BLE 的 periodic advertising ? 我尝试使用以下 sample,并把delay(2000), 改成light sleep, 但是功耗还是在10+mA, 而且在light sleep 时候 NRF scanner app 是显示时断时连的 https://github.com/espressif/arduino-esp...
by zjustin
Sat Feb 11, 2023 2:23 pm
Forum: ESP32 Arduino
Topic: unable to disable wake up source after enable via esp_deep_sleep_enable_gpio_wakeup (ESP32C3)
Replies: 2
Views: 1736

unable to disable wake up source after enable via esp_deep_sleep_enable_gpio_wakeup (ESP32C3)

I encounter a rather strange problem, not sure how do I resolve this I have 2 GPIO pins used to wake up my ESP32C3. GPIO 2: wake up device when active HIGH. GPIO 3: wake up device when active LOW. when I use the following code to and set ESP32C3 to sleep, I can wake up via both source properly. but ...
by zjustin
Mon Jan 30, 2023 2:35 pm
Forum: ESP32 Arduino
Topic: ESP32C3 keep resetting and not able to be successfully flashed via USB CDC
Replies: 1
Views: 1570

ESP32C3 keep resetting and not able to be successfully flashed via USB CDC

I am using ESP32C3, my whole board is working fine. Now I am trying to switch to USB CDC for most of the development and flashing . While, it is perfectly okay via normal serial connection. the USB CDC seems to be less reliable. below is one of the issue I notice a couple of times. USB CDC flashing ...
by zjustin
Mon Dec 05, 2022 9:45 am
Forum: Hardware
Topic: ESP32C3: Serial output garbage characters ( but firmware flashing is okay)
Replies: 3
Views: 1624

Re: ESP32C3: Serial output garbage characters ( but firmware flashing is okay)

just to share the knowledge,
the problem was due to incorrect assembly of the external crystal
by zjustin
Mon Dec 05, 2022 9:41 am
Forum: ESP-IDF
Topic: Wake up via timer, but wake up source says via EXT (interrupt)
Replies: 0
Views: 489

Wake up via timer, but wake up source says via EXT (interrupt)

Hi Gurus I encounter something really strange, my device (ESP32) goes deep sleep and wake up at fix interval, it can also be wake up via a button press. My code has been working well, but recently I encounter a very strange problem with a new battery (trying to test a 2nd source battery). the proble...
by zjustin
Wed Oct 19, 2022 6:00 am
Forum: ESP-IDF
Topic: update ESP firmware (OTA) via connected LTE modem
Replies: 1
Views: 1061

update ESP firmware (OTA) via connected LTE modem

Hi Experts

anyone has tried to perform OTA via an LTE modem (like Quectel/SIMCOMM LTE modems) ?

I can only see ways to trigger OTA via WIFI+HTTP, but not seen anything on OTA via modem+http ?

thanks in advance

Justin
by zjustin
Wed Oct 19, 2022 5:59 am
Forum: ESP32 Arduino
Topic: update ESP firmware (OTA) via connected LTE modem
Replies: 0
Views: 693

update ESP firmware (OTA) via connected LTE modem

Hi Experts

anyone has tried to perform OTA via an LTE modem (like Quectel/SIMCOMM LTE modems) ?

I can only see ways to trigger OTA via WIFI+HTTP, but not seen anything on OTA via modem+http ?

thanks in advance

Justin
by zjustin
Wed Sep 14, 2022 1:30 am
Forum: Hardware
Topic: ESP32C3: Serial output garbage characters ( but firmware flashing is okay)
Replies: 3
Views: 1624

Re: ESP32C3: Serial output garbage characters ( but firmware flashing is okay)

thanks, see answer below: - which port are you using for logging : UART0 - is it arduino or esp-idf code? Arudion - if arduino, what is the Serial.begin() baudrate : tried various, from 9600 - 115200 - what is baudrate of the UART console, assuming you are using UART for logging : used the matching ...