RT-Thread-【开发板评测】NuvotonM487 Audio模块测试RT-Thread问答社区

【开发板评测】NuvotonM487 Audio模块测试

发布于 2022-04-16 23:44:58 浏览：771 订阅该版

[tocm]

# 1 开发板介绍
## 1.1 外设
![022762863823fa117320c2486215896.jpg](https://oss-club.rt-thread.org/uploads/20220409/b61b955d782c3a6577bedd2f8385484a.jpg.webp)
## 1.2 特性
![c69b6c6bca01e8a3e5946a1610d6bf5.jpg](https://oss-club.rt-thread.org/uploads/20220409/198761b10afb7d070b8dff644e239cd1.jpg.webp)
## 1.3 块表
![0edafe9d37ee414ffacaa6e6c232500.jpg](https://oss-club.rt-thread.org/uploads/20220409/e158e5b3d8d31a4c963a0edfb3034a1c.jpg.webp)
## 1.4 AUDIO硬件原理
![image.png](https://oss-club.rt-thread.org/uploads/20220410/e33389d2d1c39d525420b4dfb3b0083d.png.webp)
# 2 开发环境搭建(GCC方式)
PC环境：win10
[NuMaker-IoT-M487 上手指南](https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-standard/tutorial/quick-start/numaker-iot-m487/quick-start)
## 2.1 Env RT-Thread 开发辅助工具
[env_released_1.2.0.7z](https://download-sh-cmcc.rt-thread.org:9151/www/aozima/env_released_1.2.0.7z)
解压后即可打开env.bat或env.exe即可使用（注意解压路径里最好不能有中文和空格）
![image.png](https://oss-club.rt-thread.org/uploads/20220409/246b978d7d5ceca35f4229e93ddb8622.png.webp)

## 2.2 安装Nu-Linker驱动
[Nu-Link_IAR 驱动](https://www.nuvoton.com/resource-download.jsp?tp_GUID=SW1120200221180914)里有Nu-Link_USB_Driver 1.8.exe这个驱动安装文件。
装完驱动后，使用 USB 线连接开发板的 USB ICE Connector 到 PC 机，会检测到COM口，如下图：
![image.png](https://oss-club.rt-thread.org/uploads/20220409/553933a7153118c1b48736227e7e498d.png.webp)

## 2.3 源码获取
https://gitee.com/rtthread/rt-thread.git
```
Administrator@BKL85SWJMT1GA7J E:\NuMaker
> git clone https://gitee.com/rtthread/rt-thread.git
Cloning into 'rt-thread'...
remote: Enumerating objects: 187653, done.
remote: Counting objects: 100% (13282/13282), done.
remote: Compressing objects: 100% (6418/6418), done.
remote: Total 187653 (delta 8657), reused 9783 (delta 6665), pack-reused 174371
Receiving objects: 100% (187653/187653), 524.46 MiB | 3.55 MiB/s, done.
Resolving deltas: 100% (134067/134067), done.
Updating files: 100% (28432/28432), done.
```

## 2.4 下载项目(NuMaker-IoT-M487)相关套件
`cd bsp\nuvoton\numaker-iot-m487`: 切换到numaker-iot-m487的工作目录；
`menuconfig --generate`: 根据.config生成rtconfig.h文件；
`pkgs --update`: 从git repo上更新本地包和Env脚本(应该时根据.config文件)；
> menuconfig可以修改整个工程配置；
> pkgs --printenv也很有用，可以查看Env的环境变量；
```
Administrator@BKL85SWJMT1GA7J E:\NuMaker
> cd bsp\nuvoton\numaker-iot-m487\

Administrator@BKL85SWJMT1GA7J E:\NuMaker\rt-thread\bsp\nuvoton\numaker-iot-m487
> menuconfig --generate

Administrator@BKL85SWJMT1GA7J E:\NuMaker\rt-thread\bsp\nuvoton\numaker-iot-m487
> pkgs --update
Cloning into 'E:\NuMaker\rt-thread\bsp\nuvoton\numaker-iot-m487\packages\at_device-latest'...
remote: Enumerating objects: 1647, done.
remote: Counting objects: 100% (150/150), done.
remote: Compressing objects: 100% (138/138), done.
remote: Total 1647 (delta 80), reused 39 (delta 8), pack-reused 1497R
Receiving objects: 100% (1647/1647), 689.47 KiB | 222.00 KiB/s, done.
Resolving deltas: 100% (1050/1050), done.
==============================>  AT_DEVICE latest is downloaded successfully.

==============================>  at_device update done

Operation completed successfully.
```
## 2.5 GCC 编译项目
> Env RT-Thread环境中已有arm-none-eabi交叉编译链；
> scons进行自动构建，生成rtthread.bin

### 2.5.1 检测交叉编译链工具
```
env_released_1.2.0\env
> arm-none-eabi-
arm-none-eabi-addr2line.exe   arm-none-eabi-gcc-nm.exe      arm-none-eabi-nm.exe
arm-none-eabi-ar.exe          arm-none-eabi-gcc-ranlib.exe  arm-none-eabi-objcopy.exe
arm-none-eabi-as.exe          arm-none-eabi-gcc.exe         arm-none-eabi-objdump.exe
arm-none-eabi-c++.exe         arm-none-eabi-gcov-tool.exe   arm-none-eabi-ranlib.exe
arm-none-eabi-c++filt.exe     arm-none-eabi-gcov.exe        arm-none-eabi-readelf.exe
arm-none-eabi-cpp.exe         arm-none-eabi-gdb-py.exe      arm-none-eabi-size.exe
arm-none-eabi-elfedit.exe     arm-none-eabi-gdb.exe         arm-none-eabi-strings.exe
arm-none-eabi-g++.exe         arm-none-eabi-gprof.exe       arm-none-eabi-strip.exe
arm-none-eabi-gcc-5.4.1.exe   arm-none-eabi-ld.bfd.exe
arm-none-eabi-gcc-ar.exe      arm-none-eabi-ld.exe
```
### 2.5.2 scons构建
注意：一定要切到项目下构建（rt-thread\\bsp\\nuvoton\\numaker-iot-m487）
```
> scons
scons: Reading SConscript files ...
Newlib version:2.4.0
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build
CC build\applications\main.o
CC build\applications\mnt.o
CC build\board\board_dev.o
CC build\board\NuClockConfig\nutool_modclkcfg.o
CC build\board\NuPinConfig\nutool_pincfg.o
此处打印太多省略
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\AudioCodec\audio_test.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\AudioCodec\acodec_nau88l25.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\BMX055\libraries\BMG160_driver\bmg160.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\BMX055\libraries\BMA2x2_driver\bma2x2.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\BMX055\sensor_bmx055.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\BMX055\libraries\BMM050_driver\bmm050.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\Demo\usbd_cdc_vcom_echo.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\Demo\slcd_show_tick.o
CC E:\NuMaker\rt-thread\bsp\nuvoton\libraries\nu_packages\Demo\usbd_hid_dance_mouse.o
LINK rtthread.elf
arm-none-eabi-objcopy -O binary rtthread.elf rtthread.bin
arm-none-eabi-size rtthread.elf
   text    data     bss     dec     hex filename
 277116    5080   57760  339956   52ff4 rtthread.elf
scons: done building targets.
```
# 3 开发板烧录
主要烧录方式两种：
1. NuMicro MCU 虚拟磁盘；
2. RT-Thread Studio工具烧录。
> 这里用的是NuMicro MCU 虚拟磁盘方式，区别是要将NuMaker-IoT-M487 上的 ISW1四个开关都拨到 ‘ON’ 的位置;而RT-Thread Studio工具烧录则是ISW1前三个开关拨到 ‘ON’，第四个开关要拨到 ‘OFF’。
NuMicro MCU 虚拟磁盘的ISW1四个开关状态如下图：

![image.png](https://oss-club.rt-thread.org/uploads/20220410/56b605f91ee28821921940b02cc4b1e0.png.webp)

配置完成后，将开发板使用 Micro USB 连接线连接计算机，我的计算机将出现一个 NuMicro MCU 虚拟磁盘。
![image.png](https://oss-club.rt-thread.org/uploads/20220410/2e40e45d2cc56d28341e55a0927ffd3b.png.webp)
将上一步编译出的rtthread.bin拷贝到该虚拟磁盘根目录，然后NuMaker M487会自动检测、升级和重启。
```
- RT -     Thread Operating System
 / | \     4.1.0 build Apr  7 2022 22:24:56
 2006 - 2022 Copyright by RT-Thread team
This chip does not support TRNG!
[I/I2C] I2C bus [i2c0] registered
[I/I2C] I2C bus [i2c1] registered
[I/I2C] I2C bus [i2c2] registered
[W/drv.qspi] qspi0 clock max frequency is 48000000Hz (!= 50000000Hz)

[I/SFUD] Find a Winbond flash chip. Size is 4194304 bytes.
[I/SFUD] flash0 flash device is initialize success.
[I/SFUD] Probe SPI flash flash0 by SPI device qspi01 success.
[I/sal.skt] Socket Abstraction Layer initialize success.
[I/utest] utest is initialize success.
[I/utest] total utest testcase num: (0)
Failed to mount elm on /.
Try to execute 'mkfs -t elm flash0' first, then reboot.
[I/at.clnt] AT client(V1.3.1) on device uart1 initialize success.
[I/sensor] rt_sensor[mag_bmx055] init success
[I/sensor] rt_sensor[acce_bmx055] init success
[I/sensor] rt_sensor[gyro_bmx055] init success
[D/FAL] (fal_flash_init:49) Flash device |             OnChip_APROM | addr: 0x00000000 | len: 0x00080000 | blk_size: 0x00001000 |initialized finish.
[D/FAL] (fal_flash_init:49) Flash device |             OnChip_LDROM | addr: 0x00100000 | len: 0x00101000 | blk_size: 0x00001000 |initialized finish.
[I/FAL] ==================== FAL partition table ====================
[I/FAL] | name  | flash_dev    |   offset   |    length  |
[I/FAL] -------------------------------------------------------------
[I/FAL] | ldrom | OnChip_LDROM | 0x00000000 | 0x00001000 |
[I/FAL] | aprom | OnChip_APROM | 0x00060000 | 0x00020000 |
[I/FAL] =============================================================
[I/FAL] RT-Thread Flash Abstraction Layer initialize success.
[I/dancemouse] Ready.

msh />[I/at.dev.esp] esp0 device wifi is disconnect.

msh />[E/at.clnt] execute command (AT+CWJAP="NT_ZY_BUFFALO","12345678") failed!
[W/at.dev.esp] esp0 device wifi connect failed, check ssid(NT_ZY_BUFFALO) and password(12345678).
[I/at.dev.esp] esp0 device network initialize successfully.
```
> [E/at.clnt] execute command (AT+CWJAP="NT_ZY_BUFFALO","12345678") failed!表示wifi的ssid和密码不对！

# 4 AUDIO测试
## 4.1 wavpayer组件
进入menuconfig界面，选择wavpayer组件
```
.config - RT-Thread Configuration  
→ RT-Thread online packages 
→ multimedia packages 
→ WavPlayer: Minimal music player for wav file play and record ─   
┌──────────────────────────────────────────────────┐ 
│   --- WavPlayer: Minimal music player for wav file play and record                        │ 
│       [*]   Enable support for play (NEW)                                                                  │   
│      (sound0) The play device name (NEW)                                                            │ 
│      [*]   Enable support for record                                                                           │
│      (sound0) The record device name (NEW)                                                        │
│       Version (latest)  --->                                                                                         │
└──────────────────────────────────────────────────┘ 
├──────────────────────────────────────────────────┤   
│                          <Select>    < Exit >    < Help >    < Save >    < Load >                 │
└──────────────────────────────────────────────────┘ 
```
更新组件到本地
```
pkgs --update
```
重新编译，生成rtthread.bin
```
scons
```
将生成的rtthread.bin用虚拟磁盘方式烧录进去，可以看到有wavplay和wavrecord命令：
```
msh />wavplay -h
usage: wavplay [option] [target] ...

usage options:
  -h,     --help                     Print defined help message.
  -s URI, --start=URI                Play wav music with URI(local files).
  -t,     --stop                     Stop playing music.
  -p,     --pause                    Pause the music.
  -r,     --resume                   Resume the music.
  -v lvl, --volume=lvl               Change the volume(0~99).
  -d,     --dump                     Dump play relevant information.

msh />wavrecord -h
usage: wavrecord [option] [target] ...

usage options:
  -h,     --help                        Print defined help message.
  -s file --start=file  <samplerate> <channels> <samplebits> 
                                        record wav music to filesystem.
  -t,     --stop                        Stop record.
```
## 4.2 挂载elm文件系统
wavrecord录制wav文件到文件系统上，elm是fatfs文件系统。
```
msh />mkfs -t elm flash0 
msh />mount flash0 / elm
mount device flash0(elm) onto / ... succeed!
msh />mount
filesystem  device  mountpoint
----------  ------  ----------
devfs       (NULL)  /dev
elm         flash0  /
```
`mkfs -t elm flash0 `: 对设备flash0制作elm文件系统
`mount flash0 / elm`: 挂载设备flash0到/节点上，该设备是elm文件系统
## 4.3 录音测试
`wavrecord -s /test.wav 8000 2 16`: 开始录音，PCM格式为采样率8K/双通道/16bit精度，封装格式为WAV。
`wavrecord -t`：停止录音
演示：
```
msh />wavrecord -s /test.wav 8000 2 16
[I/i2s] Stop record.
[I/i2s] Close I2S.
[I/acodec.nau88l25] Software Reset.
[I/acodec.nau88l25] Initialized done.
[I/i2s] Open I2S.
[W/i2s] Real sample rate: 46875 Hz != preferred sample rate: 48000 Hz
[I/i2s] Start record.
Information:
samplerate 8000
channels 2
[I/i2s] Stop record.
[I/i2s] Close I2S.
[I/acodec.nau88l25] Software Reset.
[I/acodec.nau88l25] Initialized done.
[I/i2s] Open I2S.
[W/i2s] Real sample rate: 8152 Hz != preferred sample rate: 8000 Hz
[I/i2s] Start record.

msh />
msh />wavrecord -t
[I/i2s] Stop record.
[I/i2s] Close I2S.
msh />ls 
Directory /:
test.wav            442412 
```
通过ls命令查看到test.wav文件。
## 4.4 播放测试
播放录音文件test.wav
`wavplay -s /test.wav`: 开始播放test.wav文件，wav封装头中有音频的采样率/通道/精度，不用再指定这些参数；
演示：
```
msh />wavplay -s /test.wav
[I/WAV_PLAYER] play start, uri=/test.wav
[I/i2s] Stop replay.
[I/i2s] Close I2S.
[I/acodec.nau88l25] Software Reset.
[I/acodec.nau88l25] Initialized done.
[I/i2s] Open I2S.
[W/i2s] Real sample rate: 8152 Hz != preferred sample rate: 8000 Hz
[I/i2s] Start replay.
[I/i2s] Stop replay.
[I/i2s] Close I2S.
[I/WAV_PLAYER] play end
```
这里可以手动在发命令结束播放，也可以等待播放完毕。
`wavplay -t`: 结束播放；
演示：
```
msh />wavplay -s /test.wav
[I/WAV_PLAYER] play start, uri=/test.wav
[I/i2s] Stop replay.
[I/i2s] Close I2S.
[I/acodec.nau88l25] Software Reset.
[I/acodec.nau88l25] Initialized done.
[I/i2s] Open I2S.
[W/i2s] Real sample rate: 8152 Hz != preferred sample rate: 8000 Hz
[I/i2s] Start replay.

msh />wavplay -t          
[I/i2s] Stop replay.
[I/i2s] Close I2S.
[I/WAV_PLAYER] play end
```
`wavplay -v 70`: 在正在播放时，可以调节音量，比如70
```
msh />wavplay -v 70
[I/WAV_PLAYER] set volume = 70
```
> 这里有"[I/WAV_PLAYER] set volume = 70"这句打印需要修改wavplayer.c中wavplayer_volume_set里的打印LOG_D为LOG_I。