mykhailozhyhariev / esc

Description

An electronic speed control or ESC is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking. Miniature electronic speed controls are used in electrically powered radio controlled models. Full-size electric vehicles also have systems to control the speed of their drive motors.

Here is a small ESC library for control brushless motor (BLDC).

Initialize and usage

To initialize, you must use the ESC_Init.

You can get start motor position use the ESC_getEnginePosition.

Custom variable type

Library use stdint.h variable types.

#include <stdint.h>

// Signed custom variables types
typedef int8_t      s8;
typedef int16_t     s16;
typedef int32_t     s32;

// Unsigned custom variables types
typedef uint8_t     u8;
typedef uint16_t    u16;
typedef uint32_t    u32;

Interrupts

Library use three interrupts:

1. 8-bit timer/counter overflow OVF interrupt. It used to zero point detection.

2. 16-bit timer/counter compare COMPA interrupt. It used to switch commutation state.

3. 16-bit timer/counter compare COMPB interrupt. It used to switch on COMPA timer/counter interrupt.

When motor speed rotates change, OVF interrupt switch on and interrupts cycle start again.