ESP-IDF Components library

Components for Espressif ESP32 ESP-IDF framework and ESP8266 RTOS SDK.

Part of them ported from esp-open-rtos.

Supported versions of frameworks and devices

Chip	Framework	Versions
ESP32	ESP-IDF	master, v4.x, v.3.3.5
ESP32-S2 [1]	ESP-IDF	master, v4.x, v.3.3.5
ESP32-C3 [1]	ESP-IDF	master, v4.x, v.3.3.5
ESP8266 [2]	ESP8266 RTOS SDK	master, v3.3

[1] Use "idf.py set-target esp32s2" or "idf.py set-target esp32c3" before "idf.py menuconfig" to change the chip type.

[2] Due to the incompatibility of ESP8266 drivers and hardware, some libraries are not supported on ESP8266 (see "ESP8266" column in the tables).

How to use

ESP32

Clone this repository somewhere, e.g.:

cd ~/myprojects/esp
git clone https://github.com/UncleRus/esp-idf-lib.git

Add path to components in your project makefile, e.g:

PROJECT_NAME := my-esp-project
EXTRA_COMPONENT_DIRS := /home/user/myprojects/esp/esp-idf-lib/components
include $(IDF_PATH)/make/project.mk

or in CMakeLists.txt:

cmake_minimum_required(VERSION 3.5)
set(EXTRA_COMPONENT_DIRS /home/user/myprojects/esp/esp-idf-lib/components)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(my-esp-project)

or with CMake FetchContent

cmake_minimum_required(VERSION 3.11)
include(FetchContent)
FetchContent_Declare(
  espidflib
  GIT_REPOSITORY https://github.com/UncleRus/esp-idf-lib.git
)
FetchContent_MakeAvailable(espidflib)
set(EXTRA_COMPONENT_DIRS ${espidflib_SOURCE_DIR}/components)
include($ENV{IDF_PATH}/tools/cmake/project.cmake)
project(my-esp-project)

ESP8266 RTOS SDK

Clone this repository somewhere, e.g.:

cd ~/myprojects/esp
git clone https://github.com/UncleRus/esp-idf-lib.git

Add path to components in your project makefile, e.g:

PROJECT_NAME := my-esp-project
EXTRA_COMPONENT_DIRS := /home/user/myprojects/esp/esp-idf-lib/components
EXCLUDE_COMPONENTS := max7219 mcp23x17 led_strip max31865
include $(IDF_PATH)/make/project.mk

See GitHub examples or GitLab examples.

Documentation

• Documentation
• Frequently asked questions

Components

Common libraries

Component	Description	License	ESP8266	Thread safety
i2cdev	I2C utilites	MIT	Yes	Yes
onewire	Bit-banging 1-Wire driver	MIT *	Yes	No
lib8tion	Math functions specifically designed for LED programming	MIT	Yes	-
color	Common library for RGB and HSV colors	MIT	Yes	-
noise	Noise generation functions	MIT	Yes	-
framebuffer	RGB framebuffer component	MIT	Yes	-

Real-time clocks

Component	Description	License	ESP8266	Thread safety
ds1302	Driver for DS1302 RTC module	BSD	Yes	No
ds1307	Driver for DS1307 RTC module	BSD	Yes	Yes
ds3231	Driver for DS1337 RTC and DS3231 high precision RTC module	MIT	Yes	Yes
pcf8563	Driver for PCF8563 real-time clock/calendar	BSD	Yes	Yes

Humidity & temperature sensors

Component	Description	License	ESP8266	Thread safety
dht	Driver for DHT11, AM2301 (DHT21, DHT22, AM2302, AM2321), Itead Si7021	BSD	Yes	No
sht3x	Driver for Sensirion SHT3x digital temperature and humidity sensor	BSD	Yes	Yes
sht4x	Driver for Sensirion SHT4x digital temperature and humidity sensor	BSD	Yes	Yes
si7021	Driver for Si7013/Si7020/Si7021/HTU21D/SHT2x and compatible	BSD	Yes	Yes
ds18x20	Driver for DS18B20/DS18S20 families of 1-Wire temperature sensor ICs	BSD	Yes	No
max31725	Driver for MAX31725/MAX31726 temperature sensors	BSD	Yes	Yes
lm75	Driver for LM75, a digital temperature sensor and thermal watchdog	ISC	Yes	Yes
mcp9808	Driver for MCP9808, precision digital temperature sensor	BSD	Yes	Yes
mcp960x	Driver for MCP9600/MCP9601, thermocouple EMF to temperature converter	BSD	Yes	Yes
tsys01	Driver for precision digital temperature sensor TSYS01	BSD	Yes	Yes
aht	Driver for AHT10/AHT15/AHT20 temperature and humidity sensor	BSD	Yes	Yes
max31865	Driver for MAX31865, resistance converter for platinum RTDs	BSD	No	Yes

Pressure sensors

Component	Description	License	ESP8266	Thread safety
bmp180	Driver for BMP180 digital pressure sensor	MIT	Yes	Yes
bmp280	Driver for BMP280/BME280 digital pressure sensor	MIT	Yes	Yes
bme680	Driver for BME680 digital environmental sensor	BSD	Yes	Yes
ms5611	Driver for barometic pressure sensor MS5611-01BA03	BSD	Yes	Yes

Air quality/Gas sensors

Component	Description	License	ESP8266	Thread safety
sgp40	SGP40 Indoor Air Quality Sensor for VOC Measurements	BSD	Yes	Yes
ccs811	Driver for AMS CCS811 digital gas sensor	BSD	Yes	Yes
mhz19b	Driver for MH-Z19B NDIR CO₂ sensor	BSD	Yes	No
scd4x	Driver for SCD40/SCD41 miniature CO₂ sensor	BSD	Yes	Yes
scd30	Driver for SCD30 CO₂ sensor	BSD	Yes	Yes

ADC/DAC

Component	Description	License	ESP8266	Thread safety
ads111x	Driver for ADS1113/ADS1114/ADS1115 and ADS1013/ADS1014/ADS1015 I2C ADC	BSD	Yes	Yes
hx711	Driver for HX711 24-bit ADC for weigh scales	BSD	Yes	No
mcp4725	Driver for 12-bit DAC MCP4725	BSD	Yes	Yes
pcf8591	Driver for 8-bit ADC and an 8-bit DAC PCF8591	BSD	Yes	Yes
mcp342x	Driver for 18-Bit, delta-sigma ADC MCP3426/MCP3427/MCP3428	BSD	Yes	Yes

Power/Current monitors

Component	Description	License	ESP8266	Thread safety
ina3221	Driver for INA3221 shunt and bus voltage monitor	MIT	Yes	Yes
ina219	Driver for INA219/INA220 bidirectional current/power monitor	BSD	Yes	Yes
ina260	Driver for INA260 precision digital current and power monitor	BSD	Yes	Yes

Magnetic sensors

Component	Description	License	ESP8266	Thread safety
hmc5883l	Driver for HMC5883L 3-axis digital compass	BSD	Yes	Yes
qmc5883l	Driver for QMC5883L 3-axis magnetic sensor	BSD	Yes	Yes

Light sensors

Component	Description	License	ESP8266	Thread safety
bh1750	Driver for BH1750 light sensor	BSD	Yes	Yes
tsl2561	Driver for light-to-digital converter TSL2561	BSD	Yes	Yes
tsl4531	Driver for digital ambient light sensor TSL4531	BSD	Yes	Yes
tsl2591	Driver for light-to-digital converter TSL2591	MIT	Yes	Yes

GPIO expanders

Component	Description	License	ESP8266	Thread safety
pcf8574	Driver for PCF8574 remote 8-bit I/O expander for I2C-bus	MIT	Yes	Yes
pcf8575	Driver for PCF8575 remote 16-bit I/O expander for I2C-bus	MIT	Yes	Yes
tca95x5	Driver for TCA9535/TCA9555 remote 16-bit I/O expanders for I2C-bus	BSD	Yes	Yes
mcp23008	Driver for 8-bit I2C GPIO expander MCP23008	BSD	Yes	Yes
mcp23x17	Driver for I2C/SPI 16 bit GPIO expanders MCP23017/MCP23S17	BSD	No	Yes
pca9557	Driver for PCA9537/PCA9557 remote 4/8-bit I/O expanders for I2C-bus	BSD	Yes	Yes

Addressable LEDs

Component	Description	License	ESP8266	Thread safety
led_strip	RMT-based driver for WS2812B/SK6812/APA106 LED strips	MIT	No	Yes
led_strip_spi	SPI-based driver for SK9822/APA102 LED strips	MIT	Yes	Yes

Input controls

Component	Description	License	ESP8266	Thread safety
button	HW timer-based driver for GPIO buttons	BSD	Yes	Yes
encoder	HW timer-based driver for incremental rotary encoders	BSD	Yes	Yes

Other

Component	Description	License	ESP8266	Thread safety
ultrasonic	Driver for ultrasonic range meters, e.g. HC-SR04, HY-SRF05	BSD	Yes	No
hd44780	Universal driver for HD44780 LCD display	BSD	Yes	No
pca9685	Driver for 16-channel, 12-bit PWM PCA9685	BSD	Yes	Yes
max7219	Driver for 8-Digit LED display drivers, MAX7219/MAX7221	BSD	No	Yes
tda74xx	Driver for TDA7439/TDA7439DS/TDA7440D audioprocessors	MIT	Yes	Yes
tca9548	Driver for TCA9548A/PCA9548A low-voltage 8-channel I2C switch	BSD	Yes	Yes
rda5807m	Driver for single-chip broadcast FM radio tuner RDA5807M	BSD	Yes	Yes
ds3502	Driver for nonvolatile digital potentiometer DS3502	MIT	Yes	Yes
wiegand	Wiegand protocol receiver	BSD	Yes	No

Library maintainers

• Ruslan V. Uss
• Tomoyuki Sakurai

Credits

• Tomoyuki Sakurai, developer of the LM75 and SK9822/APA102 drivers, author of the RTOS SDK ESP82666 support, master CI
• Gunar Schorcht, developer of SHT3x, BME680 and CCS811 drivers
• Brian Schwind, developer of TS2561 and TSL4531 drivers
• Andrej Krutak, developer of BH1750 driver
• Frank Bargstedt, developer of BMP180 driver
• sheinz, developer of BMP280 driver
• Jonathan Hartsuiker, developer of DHT driver
• Grzegorz Hetman, developer of DS18B20 driver
• Alex Stewart, developer of DS18B20 driver
• Richard A Burton, developer of DS3231 driver
• Bhuvanchandra DV, developer of DS3231 driver
• Zaltora, developer of INA3231 driver
• Bernhard Guillon, developer of MS5611-01BA03 driver
• Pham Ngoc Thanh, developer of PCF8591 driver
• Lucio Tarantino, developer of ADS111x driver
• Julian Dörner, developer of TSL2591 driver
• FastLED community, developers of lib8tion, color and noise libraries
• Erriez, developer of MH-Z19B driver
• David Douard, developer of MH-Z19B driver
• Nate Usher, developer of SCD30 driver