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Serial.end() on ESP32-S2 resets the board #5429

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SuGlider opened this issue Jul 20, 2021 · 0 comments · Fixed by #5434 or #5549
Closed

Serial.end() on ESP32-S2 resets the board #5429

SuGlider opened this issue Jul 20, 2021 · 0 comments · Fixed by #5434 or #5549
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@SuGlider
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Chip: ESP32-S2 Issue is related to support of ESP32-S2 Chip Type: Bug 🐛 All bugs

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SuGlider commented Jul 20, 2021 •
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What you are trying to do?

Use Serial.end() after calling Serial.begin(115200) using UART and CDC

Hardware:

Board: Esp32-S2 Devkit-Saola-1
Core Installation version: 2.0.0 RC1
IDE name: Arduino IDE
Flash Frequency: 80Mhz
PSRAM enabled: no
Upload Speed: 115200
Computer OS: Windows 10

Description:

After initializing Serial UART port on ESP32-S2, when trying to end it, the board resets.

Sketch:

void setup() {
  Serial.begin(115200);
  Serial.println("Testing ... 1");
  Serial.end();
}

Debug Messages:

ESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0x7 (TG0WDT_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4008522c
SPIWP:0xee
mode:DIO, clock div:1
load:0x3ffe6100,len:0x4b0
load:0x4004c000,len:0xa6c
load:0x40050000,len:0x25c0
entry 0x4004c198
@SuGlider SuGlider self-assigned this Jul 20, 2021
@SuGlider SuGlider added Chip: ESP32-S2 Issue is related to support of ESP32-S2 Chip Type: Bug 🐛 All bugs labels Jul 20, 2021
@SuGlider SuGlider mentioned this issue Jul 21, 2021
Merged
me-no-dev pushed a commit that referenced this issue Jul 21, 2021
@SuGlider
Fixes Serial.end() hanging on ESP32-S2 (#5434)
5458df0 
Fixes: #5429
@SuGlider SuGlider mentioned this issue Aug 16, 2021
Merged
me-no-dev pushed a commit that referenced this issue Aug 23, 2021
@SuGlider
Implements UART SerialHardware Refactoring on top of IDF (#5549)
b1d072d 
## Summary
This PR is a complete reffactoring of UART Serial Hardware and respective HAL in order to use IDF instead of current Register manipulation approach. 

It  implements Arduino SerialEvent functionality. 

Fix #5287  
Fix #5273 
Fix #5519 
Fix #5247 
Fix #5403
Fix #5429
Fix #5047
Fix #5463
Fix #5362 
Fix #5112  
Fix #5443 

## Impact
It solves many reported issues related to UART.
It was tested and works fine for ESP32, ESP-S2 and ESP32-C3.
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Labels
Chip: ESP32-S2 Issue is related to support of ESP32-S2 Chip Type: Bug 🐛 All bugs
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Fixes Serial.end() hanging on ESP32-S2
Implements UART SerialHardware Refactoring on top of IDF
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@SuGlider