Hello!
I have custom board with ESP32wroom32 module.
Application uses UART0 for logging and UART1 for configuration.
I left device on test bench for a week. It measured temperature and sent to my backend every minute and reported about it to Raspberry Pi using UART0.
UART0 has been connected with USB to SERIAL adapter CP2102. The levels were 3.3V.
After a week (just now) I have seen that CP2102 adapter TXD LED is constantly light up.
So this mean UART0 RX pin is constantly LOW.
As a result - I can't connect to internal bootloader to flash the module.
BTW UART1 was not connected at all, and it stopped working too. There is constant LOW level on RX pin.
Before I left device on test bench - I have reconfigure it using UART1. So I am pretty sure it was working.
UART1 is connecting to the PC using on-board USB to UART adapter CH340G set up for 3.3V levels.
On first time I have launched this board CH340G was set up for 5V and TX pin on UART1 was stopped working (so I wired it to other GPIO)
I think it can be latch up event or something like that.
I would appreciate any assistance can help to find a reason of this issue.
UART GPIO repeately dies
Jump to
- English Forum
- Explore
- News
- General Discussion
- FAQ
- Documentation
- Documentation
- Sample Code
- Discussion Forum
- Hardware
- ESP-IDF
- ESP-BOX
- ESP-ADF
- ESP-MDF
- ESP-WHO
- ESP-SkaiNet
- ESP32 Arduino
- IDEs for ESP-IDF
- ESP-AT
- ESP IoT Solution
- ESP RainMaker
- Rust
- ESP8266
- Report Bugs
- Showcase
- Chinese Forum 中文社区
- 活动区
- 乐鑫活动专区
- 讨论区
- 全国大学生物联网设计竞赛乐鑫答疑专区
- ESP-IDF 中文讨论版
- 《ESP32-C3 物联网工程开发实战》书籍讨论版
- 中文文档讨论版
- ESP-AT 中文讨论版
- ESP-BOX 中文讨论版
- ESP IoT Solution 中文讨论版
- ESP-ADF 中文讨论版
- ESP Mesh 中文讨论版
- ESP Cloud 中文讨论版
- ESP-WHO 中文讨论版
- ESP-SkaiNet 中文讨论版
- ESP 生产支持讨论版
- 硬件问题讨论
- 项目展示
Who is online
Users browsing this forum: No registered users and 39 guests
- All times are UTC
- Top
- Delete cookies
About Us
Espressif Systems is a fabless semiconductor company providing cutting-edge low power WiFi SoCs and wireless solutions for wireless communications and Internet of Things applications. ESP8266EX and ESP32 are some of our products.