大家好，

ESP32-C3 技术规格书 已更新，新增章节 “外设管脚分配” 。该章节系统地介绍了每个外设接口可以分配的管脚，并按优先级进行分类。

更新内容：
基于优先级的管脚分配：
优先级 1：通过 IO MUX 直接连接到外设信号的固定管脚。
优先级 2：没有限制的 GPIO 交换矩阵管脚。
优先级 3：具有关键功能的 GPIO 交换矩阵管脚（如 JTAG、UART、Strapping 管脚等）。
优先级 4：默认分配给 flash 的 GPIO 交换矩阵管脚。
说明哪些外设仅支持 IO MUX，哪些仅支持 GPIO Matrix，哪些两者都支持。
便于查阅的表格 ...

Hello everyone,

We’re excited to announce that the ESP32-C3 Datasheet has been updated with a brand-new section titled "Peripheral Pin Assignment" . This section has been introduced to provide a clear and structured overview of the pins that can be assigned to each peripheral interface, categorized ...

Hi esp_programmer,

Sorry for causing confusion by my silly typo :o
I'm still a little confused by this. The TRM actually states the EOF bit is set by hardware. I interpreted this to mean a peripheral (e.g. SPI) somehow signals the DMA controller when the bit needs to be written in the descriptor ...

Hi there,

Your basic understanding about receive descriptors is correct. The EOF bit in receive descriptors depends on the data to be received: If there is a EOF flag in the data to be received, the EOF bit in receive descriptors will be automatically written to 1 by software. Users can not ...

Hi there,

These parameters will be released in ESP32-C6 Datasheet v1.0 (the official release for the mass produced chip) hopefully at the end of this month.

For your reference, attached are some preliminary results:

Please note that these data might be different in the official release. Thank you!

Sorry for the late reply and thanks for asking!

RTC should not be reset when the chip is woken up by a GPIO from deep-sleep mode. This happens because there is a bug in ESP-IDF code. The bugfix has already merged to the master branch, and is to be backported to other release branches soon.

You may ...

Sorry that my previous explanation is wrong.

The length of stop bits can be 1, 1.5 or 2, configured by UART_STOP_BIT_NUM.
0: Invalid. No effect
1: 1 bits
2: 1.5 bits
3: 2 bits

In RS485 mode, you may add a turnaround delay of a bit before the start bit or after the stop bit, configured by UART_DL0 ...

Sorry that I just noticed your reply!
It seems that there is some inconsistency between hardware and software. I'm checking and will keep you updated.

Hi there, I'm sorry for the trouble caused by the unclear register descriptions.

UART_STOP_BIT_NUM, which is used to set the length of stop bits, has 4 valid values. 0: 1 bits; 1: 2 bits; 2: 1.5 bits; 3: 3 bits.
UART_DL1_EN and UART_DL0_EN are used to set the turnaround delay as required by the ...

Hi everybody,

We have released ESP32-C6 Datasheet and Technical Reference Manual for reference:

EN:

Datasheet - Specifications of the ESP32-C6 hardware
https://www.espressif.com/sites/default/files/documentation/esp32-c6_datasheet_en.pdf
Technical Reference Manual ...