app_tasks.c File Reference

Application tasks for signal processing, metal detecting, and LVGL GUI updates. More...

#include "app_tasks.h"
#include "signal.h"
#include "lvgl.h"
#include "ui.h"
#include "app_signal.h"
#include "metal_detecting.h"
#include "main.h"

Functions
void	ProduceAudioTask (void *argument)
	Task to produce audio when metal is detected.
void	SignalProcessingTask (void *argument)
	Task to process signals and detect metal.
void	LvHandlerTask (void *argument)
	Task to handle LVGL GUI updates.

Variables
static MD_DetectStatus_t	md_flag = NO_TARGET
static int16_t	phase_diff = 0
static uint16_t	magnitude = 0

Detailed Description

Application tasks for signal processing, metal detecting, and LVGL GUI updates.

This file contains the implementation of various tasks:

• ProduceAudioTask: Manages audio output for detected targets.
• SignalProcessingTask: Handles signal acquisition, processing, and metal detection.
• LvHandlerTask: Manages updates to the LVGL user interface based on signal processing results.

Created on: Jul 21, 2024 Author: Viktor

Function Documentation

LvHandlerTask()

void LvHandlerTask

(

void *

argument

)

Task to handle LVGL GUI updates.

This task updates the LVGL user interface with signal processing results, including depth bar, phase arc, and charts for time and frequency domains.

Parameters

argument

Task argument (unused).

ProduceAudioTask()

void ProduceAudioTask

(

void *

argument

)

Task to produce audio when metal is detected.

This task waits for the AudioSemaphoreHandle to be released, then enables the audio amplifier for a specified duration to produce an audio signal.

Parameters

argument

Task argument (unused).

SignalProcessingTask()

void SignalProcessingTask

(

void *

argument

)

Task to process signals and detect metal.

This task waits for a flag from the input queue, processes the signal to perform FFT and detect metal, and updates detection status and phase difference.

Parameters

argument

Task argument (unused).

Variable Documentation

magnitude

uint16_t magnitude = 0

static

Magnitude of the received signal

md_flag

MD_DetectStatus_t md_flag = NO_TARGET

static

Metal detection flag

phase_diff

int16_t phase_diff = 0

static

Phase difference between signals