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zephyr/dts/bindings/wifi/espressif,esp-at.yaml

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drivers: wifi: Add ESP8266 and ESP32 wifi modem driver This adds support for the Espressif ESP8266 and ESP32 devices to be used as peripherals on a UART. There are two main AT command versions that can be selected, 1.7 and 2.0. Since they behave a bit different it is important to select the one that matches the used in the firmware on your device. When downloading large amounts of data it is highly recommended to enable CONFIG_ESP_PASSIVE_TCP and flow control on the UART so that data is not lost due to UART speed or receive buffer size. Currently unsupported: - Changing UDP endpoint with a sendto() - Bind to a specific local port - Server socket operations, ie listen() and accept() Official AT firmware for ESP8266 and ESP32 can be found at: https://github.com/espressif/esp-at Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
2019-12-17 22:56:05 +08:00
# Copyright (c) 2019 Tobias Svehagen
# SPDX-License-Identifier: Apache-2.0
description: Espressif ESP8266/ESP32 WiFi modem (AT Commands)
drivers: wifi: esp_at: rename driver from esp Recently WiFi ESP32 driver (utilizing WiFi radio in ESP32 SoC) was introduced into drivers/wifi/esp32/ and it already caused confusion as there was existing drivers/wifi/esp/ directory for ESP-AT driver (utilizing external WiFi chip, by communicating using AT commands from any serial capable platform). So question has arisen whether it is good to merge both, while they are totally different drivers. Rename ESP-AT driver to be placed in drivers/wifi/esp_at/, so that it is easier to figure out difference between "esp32" and "esp_at" just by looking at driver name. Rename also DT compatible and all Kconfig options for the same reason. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2021-05-06 16:51:46 +08:00
compatible: "espressif,esp-at"
drivers: wifi: Add ESP8266 and ESP32 wifi modem driver This adds support for the Espressif ESP8266 and ESP32 devices to be used as peripherals on a UART. There are two main AT command versions that can be selected, 1.7 and 2.0. Since they behave a bit different it is important to select the one that matches the used in the firmware on your device. When downloading large amounts of data it is highly recommended to enable CONFIG_ESP_PASSIVE_TCP and flow control on the UART so that data is not lost due to UART speed or receive buffer size. Currently unsupported: - Changing UDP endpoint with a sendto() - Bind to a specific local port - Server socket operations, ie listen() and accept() Official AT firmware for ESP8266 and ESP32 can be found at: https://github.com/espressif/esp-at Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
2019-12-17 22:56:05 +08:00
include: uart-device.yaml
properties:
drivers: wifi: esp: support power-gpios to enable ESP module Add power-gpios device-tree binding property to power on module before communicating with it. This pin is called CHIP_PU in case of ESP32{,-S2} and CHIP_EN in case of ESP8266. Dedicated reset pin is available only on the latter, however Espressif recommends (in ESP8266 Hardware Design Guidelines) to use CHIP_EN instead. Follow those recommendations and use power-gpios to reset chip if that is provided over device-tree. Configure power-gpios and reset-gpios as inactive by default, so that chip becomes ready after executing esp_reset() function, either if one or both are provided over device-tree. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2020-09-29 08:31:23 +08:00
power-gpios:
type: phandle-array
required: false
drivers: wifi: esp: rename wifi-reset-gpios to reset-gpios Most DT bindings use reset-gpios name when there is a pin to reset whole chip. Rename wifi-reset-gpios to reset-gpios to be more consistent between various drivers. Additionally this prevents confusion, as somebody might think that this pin resets only WiFi, which is not true. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2020-09-29 07:41:29 +08:00
reset-gpios:
drivers: wifi: Add ESP8266 and ESP32 wifi modem driver This adds support for the Espressif ESP8266 and ESP32 devices to be used as peripherals on a UART. There are two main AT command versions that can be selected, 1.7 and 2.0. Since they behave a bit different it is important to select the one that matches the used in the firmware on your device. When downloading large amounts of data it is highly recommended to enable CONFIG_ESP_PASSIVE_TCP and flow control on the UART so that data is not lost due to UART speed or receive buffer size. Currently unsupported: - Changing UDP endpoint with a sendto() - Bind to a specific local port - Server socket operations, ie listen() and accept() Official AT firmware for ESP8266 and ESP32 can be found at: https://github.com/espressif/esp-at Signed-off-by: Tobias Svehagen <tobias.svehagen@gmail.com>
2019-12-17 22:56:05 +08:00
type: phandle-array
required: false
drivers: wifi: esp: support reconfiguration of UART baudrate Allow to reconfigure UART baudrate on ESP and on host MCU, so a non-default baudrate can be used for communication. This option helps for example to increase network bandwidth without touching ESP chip firmware. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
2020-09-25 16:58:18 +08:00
target-speed:
type: int
required: false
description:
UART baudrate which will be requested using AT commands and to which
UART interface will be reconfigured during initialization phase.