ST9 datasheet(105/146 Pages) STMICROELECTRONICS

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ST9 USER GUIDE

The port used for this application is:

– T0OUTA

Table 6.

APPLI2\MFT.C Functions

4.8.2.2.3 MFT files with DMA in Swap Mode

The MFT function file is <mft\appli3\mft.c> and contains 6 functions that are initialized for gen-

erating a PWM signal using the MFT and a DMA channel working in Swap mode.

The port used for this application is:

– T0OUTA

Function

Description and Comments

void INIT_MFT(void);

MFT initialization.

It initializes the value loaded into the prescaler and into the counter.

void START_MFT(void);

Start the MFT.

void STOP_MFT (void);

Stop the MFT.

void

INIT_MFT_ITDMA(void);

This function configures the IT and the DMA for the MFT.

void Enable_MFTCP0_DMA

(unsigned int * CompBuffer,

unsigned int Count);

Enable Compare0 DMA.

void

INTMFT_CompEOB(void);

Interrupt subroutine which occurs after a compare0 DMA end of block.

The DMA is not re-initialized so only one block is transferred.

Same vector as compare0 interrupt.

void INTMFT_OUF(void);

Interrupt subroutine which occurs after an underflow.

It stops the timer when the whole PWM signal has been generated.

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