UM0324 datasheet(72/105 Pages) STMICROELECTRONICS

72 / 105 page

Library functions

UM0324

72/105

For information on selecting the PWM switching frequency, you will find advice in

Section A.2 on page 98. To determine the max modulation index corresponding to the PWM

switching frequency, refer to Table 2 on page 51.

4.6

Encoder feedback processing: 75x_encoder.c module

4.6.1

List of available functions and interrupt service routines

The following is a list of available functions as listed in the 75x_ encoder .h header file:

●

ENC_Init on page 72

●

ENC_GetPosition on page 73

●

ENC_Get_Electrical_Angle on page 73

●

ENC_Get_Mechanical_Angle on page 73

●

ENC_ResetEncoder on page 74

●

ENC_Clear_Speed_Buffer on page 74

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ENC_Get_Speed on page 74

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ENC_Get_Average_Speed on page 75

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TIMx_UP_IRQHandler - interrupt routine on page 75

ENC_Init

Synopsis

void ENC_Init(void)

Description

The purpose of this function is to initialize the encoder timer. The

peripheral clock, input pins and update interrupt are enabled. The

peripheral is configured in 4X mode, which means that the counter is

incremented/decremented on the rising/falling edges of both timer

input 1 and 2 (TIMx_TI0 and TIMx_TI1 pins).

Functions called

MRCC_PeripheralClockConfig

GPIO_Init

EIC_IRQInit

TIM_StructInit, TIM_Init, TIM_ClearFlag, TIM_ITConfig,

TIM_ResetCounter, Tim_Cmd

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