ESP32-S2 UART_PRINT_CONTROL eFuse 的不同值有哪些？

ESP32-S2 的 UART_PRINT_CONTROL eFuse 控制 ROM 启动阶段 UART 打印输出的行为。根据 GitHub 上的 ESP-IDF，它由两位组成：

00：启用
01：复位时 GPIO46 为低电平时启用
10：复位时 GPIO46 为高电平时启用
11：禁用

烧写后无法撤销，但如果你确实需要这样做，以下是将它烧写为 0b11 的示例：

burn_uart_print_control.sh

espefuse.py burn_efuse UART_PRINT_CONTROL 0b11

espefuse.py burn_efuse UART_PRINT_CONTROL 0b11

在执行烧写操作之前，它会要求你确认。

espefuse_burn_example.txt

espefuse.py v4.9.0
Connecting...
Device PID identification is only supported on COM and /dev/ serial ports.
.
Detecting chip type... Unsupported detection protocol, switching and trying again...
Detecting chip type... ESP32-S2

=== Run "burn_efuse" command ===
The efuses to burn:
  from BLOCK0
     - UART_PRINT_CONTROL

Burning efuses:

    - 'UART_PRINT_CONTROL' (Set the default UART boot message output mode) 0b00 -> 0b11


Check all blocks for burn...
idx, BLOCK_NAME,          Conclusion
[00] BLOCK0               is empty, will burn the new value
.
This is an irreversible operation!
Type 'BURN' (all capitals) to continue.

espefuse.py v4.9.0
Connecting...
Device PID identification is only supported on COM and /dev/ serial ports.
.
Detecting chip type... Unsupported detection protocol, switching and trying again...
Detecting chip type... ESP32-S2

=== Run "burn_efuse" command ===
The efuses to burn:
  from BLOCK0
     - UART_PRINT_CONTROL

Burning efuses:

    - 'UART_PRINT_CONTROL' (Set the default UART boot message output mode) 0b00 -> 0b11


Check all blocks for burn...
idx, BLOCK_NAME,          Conclusion
[00] BLOCK0               is empty, will burn the new value
.
This is an irreversible operation!
Type 'BURN' (all capitals) to continue.

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