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ESP32 boards support

MCU 2 PWM mode 4 PWM mode 3 PWM mode 6 PWM mode pwm frequency config MCPWM LEDC
esp32 ✔️ ✔️ ✔️ ✔️ ✔️ ✔️ ✔️
esp32-s2 ✔️ ✔️ ✔️ ✔️ (LEDC only) ✔️ ✔️
esp32-s3 ✔️ ✔️ ✔️ ✔️ ✔️ ✔️ ✔️
esp32-c3 ✔️ ✔️ ✔️ ✔️ (LEDC only) ✔️ ✔️

Esp32 devices are fully configurable using the SimpleFOClibrary and will work with all driver types.

PWM drivers

Esp32 mcus have two different low-level drivers for PWM generation: MCPWM and LEDC. The MCPWM driver (Motor Control PWM) is a more advanced driver that allows more control over the PWM signals and is used by default in the SimpleFOClibrary. The LEDC driver is a simpler driver that is by default intended for LED control but can also be used for motor control. The LEDC driver is a lot les flexible than the MCPWM driver but SimpleFOClibrary supports it as well. By default the MCPWM driver is used on all other esp32 devices if available, if not the LEDC driver is used (ex. esp32-s2 and esp32-c3 devices). If you are using an esp32 device that supports the MCPWM driver and you want to use the LEDC driver, you can force the use of the LEDC driver by defining the SIMPLEFOC_ESP32_USELEDC build flag.

RULE OF THUMB: MCPWM vs LEDC

If you are using an esp32 device that supports the MCPWM driver, it is recommended to use it. The MCPWM driver is more flexible and allows more control over the PWM signals. If you are using an esp32 device that does not support the MCPWM driver, the LEDC driver can be used as well.

BEWARE

From the SimpleFOClibrary version v2.3.4, the library requires the esp32 arduino package version v3.x

Some example esp32 based boards:

Board Name Specifications Link Price
ESP32 (ex. NodeMCU)
- 3,3V / 5V logic
- 16 PWMs
- all pins interrupts
- 240MHz
- Wifi + Bluetooth
Ebay 10€
ESP32 R32 D1 board - 3,3V / 5V logic
- 16 PWMs
- all pins interrupts
- 240MHz
- Wifi + Bluetooth
- Arduino headers
Amazon
Ebay
10€
FeatherS2 ESP32-S2 - 3,3V / 5V logic
- 8 PWMs
- 13 analog channels
- all pins interrupts
- 240MHz
- Wifi
Adafruit shop 20€
Metro ESP32-S2 - 3,3V / 5V logic
- 8 PWMs
- 1813 analog channels
- all pins interrupts
- 240MHz
- Wifi
Adafruit shop 15€

Arduino IDE support package

ESP32 boards are supported using arduino-esp32 package, it is open source software provided by the espressif. You can download the support package through the Arduino Board Manager by searching for esp32 or follow the instruction of their webpage package installation.

ESP8266 boards support

MCU 2 PWM mode 4PWM mode 3 PWM mode 6 PWM mode pwm frequency config
esp8266 ✔️ ✔️ ✔️ ✔️

Esp8266 devices are still in the initial support phase in the SimpleFOClibrary and have been tested with a set of different drivers. These boards have only 4 pwm pins so the 6PWM motor control cannot be implemented, as well as having only one analog input, the foc current control is not possible.

Board Name Specifications Link Price
NodeMCU ESP8266 - 3,3V logic
- 4 PWMs
- all pins interrupts
- 80-160MHz
- Wifi
Aliexpress 2-10€
ESP8266 ESP-12E D1 board - 3,3V logic
- 4 PWMs
- all pins interrupts
- 80-160MHz
- Wifi
- Arduino UNO R3 headers
Amazon
Aliexpress
3-10€

Arduino IDE support package

ESP8266 boards are supported using arduino-esp8266 package, it is open source software provided by the espressif. You can download the support package through the Arduino Board Manager by searching for esp8266 or follow the instruction of their webpage package installation.