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/*
*******************************************************************************
* Copyright (c) 2021 by M5Stack
* Equipped with M5Tough sample source code
* 配套 M5Tough 示例源代码
* Visit the website for more information:https://docs.m5stack.com/en/core/gray
* 获取更多资料请访问:https://docs.m5stack.com/zh_CN/core/gray
*
* describe:Speaker example. 喇叭示例
* date:2022/3/12
*******************************************************************************
*/
#include <M5Tough.h>
#include <driver/i2s.h>
extern const unsigned char previewR[120264]; // Referring to external data (Dingdong audio files are
// stored inside).
// 引用外部数据(dingdong音频文件存储在内)
#define CONFIG_I2S_BCK_PIN 12 // 定义I2S相关端口
#define CONFIG_I2S_LRCK_PIN 0
#define CONFIG_I2S_DATA_PIN 2
#define CONFIG_I2S_DATA_IN_PIN 34
#define Speak_I2S_NUMBER I2S_NUM_0 // 定义扬声器端口
#define MODE_MIC 0 // 定义工作模式
#define MODE_SPK 1
#define DATA_SIZE 1024
bool InitI2SSpeakOrMic(int mode) { // Init I2S. 初始化I2S
esp_err_t err = ESP_OK;
i2s_driver_uninstall(Speak_I2S_NUMBER); // Uninstall the I2S driver. 卸载I2S驱动
i2s_config_t i2s_config = {
.mode = (i2s_mode_t)(I2S_MODE_MASTER), // Set the I2S operating mode.
// 设置I2S工作模式
.sample_rate = 44100, // Set the I2S sampling rate. 设置I2S采样率
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, // Fixed 12-bit stereo MSB.
// 固定为12位立体声MSB
.channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT, // Set the channel format. 设置频道格式
#if ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(4, 1, 0)
.communication_format = I2S_COMM_FORMAT_STAND_I2S, // Set the format of the communication.
#else // 设置通讯格式
.communication_format = I2S_COMM_FORMAT_I2S,
#endif
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, // Set the interrupt flag. 设置中断的标志
.dma_buf_count = 2, // DMA buffer count. DMA缓冲区计数
.dma_buf_len = 128, // DMA buffer length. DMA缓冲区长度
};
if (mode == MODE_MIC) {
i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_PDM);
} else {
i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX);
i2s_config.use_apll = false; // I2S clock setup. I2S时钟设置
i2s_config.tx_desc_auto_clear = true; // Enables auto-cleanup descriptors for understreams.
// 开启欠流自动清除描述符
}
// Install and drive I2S. 安装并驱动I2S
err += i2s_driver_install(Speak_I2S_NUMBER, &i2s_config, 0, NULL);
i2s_pin_config_t tx_pin_config;
#if (ESP_IDF_VERSION > ESP_IDF_VERSION_VAL(4, 3, 0))
tx_pin_config.mck_io_num = I2S_PIN_NO_CHANGE;
#endif
tx_pin_config.bck_io_num = CONFIG_I2S_BCK_PIN; // Link the BCK to the CONFIG_I2S_BCK_PIN pin.
// 将BCK链接至CONFIG_I2S_BCK_PIN引脚
tx_pin_config.ws_io_num = CONFIG_I2S_LRCK_PIN; // ...
tx_pin_config.data_out_num = CONFIG_I2S_DATA_PIN; // ...
tx_pin_config.data_in_num = CONFIG_I2S_DATA_IN_PIN; // ...
err += i2s_set_pin(Speak_I2S_NUMBER,
&tx_pin_config); // Set the I2S pin number. 设置I2S引脚编号
err += i2s_set_clk(Speak_I2S_NUMBER, 44100, I2S_BITS_PER_SAMPLE_16BIT,
I2S_CHANNEL_MONO); // Set the clock and bitwidth used by I2S Rx and Tx.
// 设置I2S RX、Tx使用的时钟和位宽
return true;
}
void DisplayInit(void) { // Initialize the display. 显示屏初始化
M5.Lcd.fillScreen(WHITE); // Set the screen background color to white.
// 设置屏幕背景色为白色
M5.Lcd.setTextColor(BLACK); // Set the text color to black. 设置文字颜色为黑色
M5.Lcd.setTextSize(2); // Set font size to 2. 设置字体大小为2
}
void SpeakInit(void) { // 初始化扬声器
M5.Axp.SetSpkEnable(true); // 启用扬声器电源
InitI2SSpeakOrMic(MODE_SPK);
}
void DingDong(void) {
size_t bytes_written = 0;
i2s_write(Speak_I2S_NUMBER, previewR, 120264, &bytes_written, portMAX_DELAY);
}
// 在 M5Core
// 启动或者复位后,即会开始执行setup()函数中的程序,该部分只会执行一次。
void setup() {
delay(1000);
M5.begin(true, true, true, true); // Init M5Tough. 初始化 M5Tough
DisplayInit();
M5.Lcd.setTextColor(RED);
M5.Lcd.setCursor(10,
10); // Set the cursor at (10,10). 将光标设在(10,10)处
M5.Lcd.printf("Speak Test!"); // The screen prints the formatted string and
// wraps it. 屏幕打印格式化字符串并换行
M5.Lcd.setTextColor(BLACK);
M5.Lcd.setCursor(10, 26);
M5.Lcd.printf("Press Left Button to listen DingDong!");
M5.Lcd.fillRect(0, 210, 320, 30, GREEN);
SpeakInit();
DingDong();
delay(100);
}
/* After the program in setup() runs, it runs the program in loop()
The loop() function is an infinite loop in which the program runs repeatedly
在setup()函数中的程序执行完后,会接着执行loop()函数中的程序
loop()函数是一个死循环,其中的程序会不断的重复运行 */
void loop() {
TouchPoint_t pos = M5.Touch.getPressPoint(); // Stores the touch coordinates in pos.
// 将触摸坐标存储在pos.内
Serial.println(pos);
if (pos.y > 210) {
delay(100);
DingDong();
}
delay(10);
}
The example Speak, when compiled and loaded into the M5Tough, plays the "dingdong" sound on setup and does nothing further. There are no buttons displayed on the touch screen, and touching the lower left or anywhere else on the screen does nothing. I am trying to get any sound to play more than once when triggered, and thought I could use this example as a template. I really like the M5 platform and products, though!