Which models are referred to by subsequent chips? I know that ESP32-S2 and ESP32-S3 support standard USB functionality, but their packages are too large. I want a chip with a small package that supports USB Serial virtual COM port.

I accidentally enabled EFUSE_DIS_ICACHE in the efuse of ESP32-C3, and now the program keeps rebooting. Is there any solution? Also, does the USB Serial module of ESP32-C3 have an efuse bit to disable the function where operating the RTS pin causes the ESP32-C3 to reset?
ESP-ROM:esp32c3-api1 ...

我目前使用一片esp32s3做ap，另一片esp32c2需要做sta连接ap配对使用，esp32s3如果需要把自身的wifi名称和密码发送给未连接ap的esp32c2的话需要怎么操作？就像smartconfig一键配网一样

I want to use the USB serial peripheral of ESP32-C3 to receive data from the pc, but the RTS will be set when the serial port is operated on the pc, which will cause the ESP32-C3 to reset, is there a way to turn off the function of resetting the chip when operating the RTS of the USB virtual serial ...

我想将ESP32-C3的USB serial当作一个普通串口使用，但是有些串口工具在使用时会操作RTS,DTR，这样就会让ESP32-C3无法正常工作，数据手册中写到能通过烧写eFuse来禁用这个功能，但是我看C3的eFuse中只有关闭USB serial模块和禁止芯片强制进入下载模式的烧写位，没有看到关闭操作RTS使芯片复位的烧写位，请问有方法可以单独关闭操作RTS,DTR使芯片复位，进入下载模式吗？
另外，禁止强制芯片进入下载模式是不是意味着芯片永远无法进入下载模式？并且没有办法使用USB串口或者U0TXD/U0RXD烧写固件？

I am hoping to use the RMT module of the ESP32-S2 to send a fixed number of PWM waves and use the cyclic transmission mode of the RMT module. When the cyclic transmission mode is activated and the transmission starts, is it possible to get the number of cycles sent in real time from the program ...

You can check all these docs:
https://docs.espressif.com/projects/esp-idf/en/v4.3/esp32/api-reference/peripherals/rmt.html
https://github.com/husarnet/esp-idf/blob/master/components/driver/include/driver/rmt.h
https://github.com/ExploreEmbedded/ESP32_RMT/blob/master/rmt.h


Hello，I have reviewed ...

I hope to use the RMT module of ESP32-S2 to send a fixed number of PWM waves, and use the cyclic transmission mode of the RMT module. When the cyclic transmission mode is enabled and transmission begins, can the number of cycles that have been sent be obtained in real-time in the program?

我将ESP32-S2的efuse位EFUSE_UART_PRINT_CHANNEL置1后，将boot信息打印切换到UART1，现在无法使用UART0烧录程序，连接UART1有boot信息打印，但是也无法烧录程序

在ESP32-S2的技术参考手册的116页中说
使能 UART 安全下载模式（仅支持读写 flash）
但是在ESP-IDF编程指南中的安全指南部分介绍说
该模式将限制部分涉及更新 SPI 配置的命令，如更改波特率、基本的 flash 写入以及通过 get_security_info 返回当前启用的安全功能摘要。
实际测试后是无法将固件写入flash
D:\Espressif\frameworks>esptool.py --no-stub --chip esp32s2 -p com3 write_flash 0x1000 key_boot.bin --force
esptool.py v4 ...