【RTT大赛作品连载】AB32VG1评估板 音乐播放器-ai赛事

之前，记录了从新建项目到点灯，按钮控制彩灯测试！接下来看看在如何AB32VG1评估板实现音乐播放器！

硬件如图：

要用到TF卡，和美标3.2mm耳机

在RT-ThreadStudio的音乐播放器项目到对应开发配置！！！整体配置：

详细配置如下：

内核设置如图（注意不要多选，或者少选！！！）

组件如图：

软件包如图：

硬件设置如图：

以上就是在RT-ThreadStudio的设置，这是我验证过的设置！！！其他的设置是否可用存在很大问题！！！我自己试过选择MP3格式，结果异常一大堆！！！所以建议在设置项目的时候尽量要注意！！！我也希望用截图这种直观的方式，快速记录项目设置的每个细节！尽量保证照着这个记录重新建类似的项目一次成功！！！

下面就是软件实现！有了前两次的AB32VG1评估板项目调试经验！这次相对就顺利多了！

软件逻辑是初始化后先获取对应目录下的.wav格式文件列表！在自动播放第一首歌！效果如图！

接下来就是通过按键实现各种操作！如图：

增加了两个关联变量，控制声音，及播放完毕

配合以下源码：

/* Copyright (c) 2006-2021, RT-Thread Development Team

*

* SPDX-License-Identifier: Apache-2.0

*

* Change Logs:

* Date Author Notes

* 2021-11-12 panshi90 the first version

*/

#include

#include

#include “board.h”

#include

#include “wavplayer.h”

#include

#include

#include

#include

//S3

#define BUTTON_PIN_0 rt_pin_get(“PF.0”)

//S2

#define BUTTON_PIN_1 rt_pin_get(“PF.1”)

//#define NUM_OF_SONGS (1000u)

static struct button btn_0;

static struct button btn_1;

uint8_t cur_volume = 50;

int stopstate = 0;

rt_mutex_t mutex1;

int EndState = 0;

static uint32_t cnt_0 = 0;

//static uint32_t cnt_1 = 0;

uint16_t currentSong = 0;

static uint32_t NUM_OF_SONGS = 0;

char table[200];

static struct dfs_fd fd1;

static struct dirent dirent1;

void readFileListos()

{

struct stat stat;

int length, fd;

char* fullpath, * path;

fullpath = RT_NULL;

NUM_OF_SONGS = 1;

//system(“cd .”);

rt_thread_mdelay(10);

rm(“wav.txt”);

rt_thread_mdelay(50);

fd = open(“wav.txt”, O_WRONLY | O_CREAT | O_APPEND);

path = rt_strdup(“/WAV”);

if (dfs_file_open(&fd1, path, O_DIRECTORY) == 0)

{

//rt_kprintf(“Directory %s:\n”, path);

do

{

memset(&dirent1, 0, sizeof(dirent1));

length = dfs_file_getdents(&fd1, &dirent1, sizeof(dirent1));

if (length > 0)

{

memset(&stat, 0, sizeof(struct stat));

// build full path for each file

fullpath = dfs_normalize_path(path, dirent1.d_name);

if (fullpath == RT_NULL)

break;

if (dfs_file_stat(fullpath, &stat) == 0)

{

char songPath[200] = “WAV/”;

strcat(songPath, dirent1.d_name);

strcat(songPath, “\n”);

write(fd, songPath, sizeof(songPath));

//rt_kprintf(“%s\n”, songPath);

if (S_ISDIR(stat.st_mode))

{

rt_kprintf(“%-25s\n”, ”

while (read(fd, songPath, sizeof(songPath)) > 0)

{

if (i == currentSong) {

int32_t len = strlen(songPath);

songPath[len – 1] = \0;

strcpy(table, songPath);

}

i++;

}

}

close(fd);

}

void saia_channels_set(uint8_t channels);

void saia_volume_set(rt_uint8_t volume);

uint8_t saia_volume_get(void);

static uint8_t button_read_pin_0(void)

{

return rt_pin_read(BUTTON_PIN_0);

}

static uint8_t button_read_pin_1(void)

{

return rt_pin_read(BUTTON_PIN_1);

}

static void button_S3_callback(void* btn)

{

uint32_t btn_event_val;

btn_event_val = get_button_event((struct button*)btn);

switch (btn_event_val)

{

case SINGLE_CLICK:

cnt_0++;

cur_volume = cnt_0 * 10;

if (cnt_0 == 10)

{

cnt_0 = 1;

}

saia_volume_set(cur_volume);

rt_kprintf(“vol=%d\n”, saia_volume_get());

rt_kprintf(“button S3 single click\n”);

break;

case DOUBLE_CLICK:

if (cnt_0 > 1)

{

cnt_0–;

}

cur_volume = cnt_0 * 10;

wavplayer_volume_set(cur_volume);

rt_kprintf(“button S3 double click\n”);

break;

case LONG_PRESS_START:

rt_kprintf(“button S3 long press start\n”);

break;

case LONG_PRESS_HOLD:

rt_kprintf(“button S3 long press hold\n”);

break;

}

}

static void button_S2_callback(void* btn)

{

uint32_t btn_event_val;

int state = 0;

EndState = 1;

btn_event_val = get_button_event((struct button*)btn);

switch (btn_event_val)

{

case SINGLE_CLICK:

if (currentSong == NUM_OF_SONGS) {

currentSong = 0;

}

GetCurrentPath();

stopstate = 0;

wavplayer_play(table);

currentSong++;

rt_kprintf(“button S2 single click\n”);

break;

case DOUBLE_CLICK:

state = wavplayer_state_get();

switch (state)

{

case PLAYER_STATE_PLAYING:

wavplayer_pause();

break;

case PLAYER_STATE_PAUSED:

wavplayer_resume();

break;

case PLAYER_STATE_STOPED:

GetCurrentPath();

wavplayer_play(table);

rt_kprintf(“button S2 double click\n”);

break;

default:

break;

}

default:

break;

}

stopstate = 0;

EndState = 0;

}

static void btn_thread_entry(void* p)

{

while (1)

{

rt_thread_delay(RT_TICK_PER_SECOND / 500);

rt_err_t result = rt_mutex_take(mutex1, 2);

if (result == RT_EOK) {

button_ticks();

rt_mutex_release(mutex1);

}

}

}

static void endCheck_thread_entry(void* p)

{

while (1)

{

rt_thread_mdelay(2500);

rt_err_t result = rt_mutex_take(mutex1, 2);

int state = wavplayer_state_get();

if (result == RT_EOK) {

if ((state == PLAYER_STATE_STOPED) && (EndState == 0)) {

if ((stopstate == 1)) {

stopstate = 0;

if (currentSong == NUM_OF_SONGS) {

currentSong = 0;

}

GetCurrentPath();

wavplayer_play(table);

currentSong++;

}

}

rt_mutex_release(mutex1);

}

}

}

static int multi_button_test(void)

{

rt_thread_t thread = RT_NULL, thread1 = RT_NULL;

mutex1 = rt_mutex_create(“xx”, RT_IPC_FLAG_PRIO);

//Create background ticks thread

rt_thread_mdelay(2000);

readFileListos();

GetCurrentPath();

saia_volume_set(cur_volume);

wavplayer_play(table);

currentSong++;

thread = rt_thread_create(“btn”, btn_thread_entry, RT_NULL, 2048, 10, 10);

thread1 = rt_thread_create(“endCHeck”, endCheck_thread_entry, RT_NULL, 2000, 11, 10);

if (thread == RT_NULL)

{

return RT_ERROR;

}

rt_thread_startup(thread);

if (thread1 == RT_NULL)

{

return RT_ERROR;

}

rt_thread_startup(thread1);

// low level drive

rt_pin_mode(BUTTON_PIN_0, PIN_MODE_INPUT_PULLUP);

button_init(&btn_0, button_read_pin_0, PIN_LOW);

button_attach(&btn_0, SINGLE_CLICK, button_S3_callback);

button_attach(&btn_0, DOUBLE_CLICK, button_S3_callback);

button_attach(&btn_0, LONG_PRESS_START, button_S3_callback);

button_attach(&btn_0, LONG_PRESS_HOLD, button_S3_callback);

button_start(&btn_0);

rt_pin_mode(BUTTON_PIN_1, PIN_MODE_INPUT_PULLUP);

button_init(&btn_1, button_read_pin_1, PIN_LOW);

button_attach(&btn_1, SINGLE_CLICK, button_S2_callback);

button_attach(&btn_1, DOUBLE_CLICK, button_S2_callback);

button_attach(&btn_1, LONG_PRESS_START, button_S2_callback);

button_attach(&btn_1, LONG_PRESS_HOLD, button_S2_callback);

button_start(&btn_1);

return RT_EOK;

}

INIT_APP_EXPORT(multi_button_test);

即可实现AB32VG1评估板 音乐播放器！

目前只支持.WAV格式，其实一个好的播放器应该支持多种音频文件格式!如：MP3,AIFF!有兴趣的爱好者可以在此基础上实现更多或者自己更喜欢的方式！！！

欢迎留言点赞！