硬件型号：M5Core2
代码框架：Ardunio
问题：
我在TF卡中准备了一个wav格式的文件，想通过M5.Speaker类进行播放，但在配置Speaker后无法正常播放音频
// 我的代码
void playSpeak(File* file) {
auto config = M5.Speaker.config();
config.pin_data_out = 2;
config.pin_ws = 0;
config.sample_rate = 16000;
config.dma_buf_len = 1024;
config.dma_buf_count = 2;
// config.buzzer = true;
config.i2s_port = I2S_NUM_0;
M5.Speaker.config(config);
M5.Speaker.begin();
// M5.Speaker.tone(661, 1000);
M5.Speaker.setAllChannelVolume(255);
M5.Speaker.setVolume(64);
M5.Speaker.setChannelVolume(0, 255);
// bool status = M5.Speaker.tone(2000, 1000);
uint8_t* dataBuf = (uint8_t*)malloc(file->size());
file->read(dataBuf, file->size());
Serial.printf("File Content: %d", file->size());
bool status = M5.Speaker.playWav(dataBuf, file->size(), 1, 1, true);
if (!status) {
Serial.println("Failed to play");
}
free(dataBuf);
file->close();
M5.Speaker.end();
i2s_driver_uninstall(I2S_NUM_0);
}
我开放了Speaker类中源官方测试代码，用来打印wav文件信息，端口打印内容如下：
Speech Start
File Content: 957804[ 14851][D][Speaker_Class.cpp:772] playWav(): [wav] RIFF : RIFF
[ 14851][D][Speaker_Class.cpp:773] playWav(): [wav] chunk_size : 957796
[ 14855][D][Speaker_Class.cpp:774] playWav(): [wav] WAVEfmt : WAVEfmt
[ 14862][D][Speaker_Class.cpp:775] playWav(): [wav] fmt_chunk_size : 16
[ 14868][D][Speaker_Class.cpp:776] playWav(): [wav] audiofmt : 1
[ 14874][D][Speaker_Class.cpp:777] playWav(): [wav] channel : 1
[ 14880][D][Speaker_Class.cpp:778] playWav(): [wav] sample_rate : 16000
[ 14887][D][Speaker_Class.cpp:779] playWav(): [wav] byte_per_sec : 32000
[ 14894][D][Speaker_Class.cpp:780] playWav(): [wav] block_size : 2
[ 14900][D][Speaker_Class.cpp:781] playWav(): [wav] bit_per_sample : 16
Speech end
为解决该问题，我做了如下尝试：
- 测试硬件功放是否可用，我通过官方tone函数测试功放可以正常发出声音
- 阅读学习I2S相关知识，了解了基础原理
- 在网上查阅了ESP32 I2S相关使用指引
但我并没有解决我的问题，希望有人可以帮我看看是哪里的问题？非常感谢！