电子门铃

vany5921

一个利用BLE通讯的门铃应用。
M5Atom Lite/Matrix发送BLE广播，在M5Atom echo中检测到相应的广播包后，播放声音。
m5atom_lite_bcast.ino在按下按钮后在BLE上发送广播
m5atom_echo_chime进行扫描，当检测到匹配设备名的广播包时，从扬声器发出铃音。

声音文件 chime.h.zip (57.59 KB, 下载次数: 0)

2020-8-30 14:06 上传

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1. #include <M5Atom.h>
   
2. #include <BLEDevice.h>
   
3. #include <BLEUtils.h>
   
4. #include <BLEScan.h>
   
5. #include <BLEAdvertisedDevice.h>
   
6. #include <driver/i2s.h>
   
7. #include "chime.h"  //wav file
   
8. 
   
9. /* LED */
   
10. #define LED_COLOR_INACTIVE  0xF00000
    
11. #define LED_COLOR_ACTIVE    0x00F000
    
12. 
    
13. /* BLE */
    
14. BLEScan* pBLEScan;
    
15. #define TARGET_DEVNAME  "M5Atom-chime"
    
16. #define SCAN_TIME 1 //In seconds
    
17. #define DELAY_AFTERCHIME 2000 //In miliseconds
    
18. 
    
19. /* I2S */
    
20. #define CONFIG_I2S_BCK_PIN      19
    
21. #define CONFIG_I2S_LRCK_PIN     33
    
22. #define CONFIG_I2S_DATA_PIN     22
    
23. #define CONFIG_I2S_DATA_IN_PIN  23
    
24. #define SPEAKER_I2S_NUMBER      I2S_NUM_0
    
25. #define MODE_MIC                0
    
26. #define MODE_SPK                1
    
27. 
    
28. bool scanChimeDevice()
    
29. {
    
30.   bool found = false;
    
31.   int devcount;
    
32. 
    
33.   BLEScanResults foundDevices = pBLEScan->start(SCAN_TIME, false);
    
34.   devcount = foundDevices.getCount();
    
35.   for(int i=0; i<devcount; i++)
    
36.   {
    
37.       BLEAdvertisedDevice d = foundDevices.getDevice(i);
    
38.       if(d.haveName())
    
39.       {
    
40.         if(d.getName() == TARGET_DEVNAME)
    
41.         {
    
42.           found = true;
    
43.           break;
    
44.         }
    
45.       }
    
46.   }
    
47. 
    
48.   // delete results fromBLEScan buffer to release memory
    
49.   pBLEScan->clearResults();
    
50. 
    
51.   return found;
    
52. }
    
53. 
    
54. void InitI2SSpeakerOrMic(int mode)
    
55. {
    
56.   esp_err_t err = ESP_OK;
    
57. 
    
58.   i2s_driver_uninstall(SPEAKER_I2S_NUMBER);
    
59.   i2s_config_t i2s_config = {
    
60.     .mode                 = (i2s_mode_t)(I2S_MODE_MASTER),
    
61.     .sample_rate          = 16000,
    
62.     .bits_per_sample      = I2S_BITS_PER_SAMPLE_16BIT,
    
63.     .channel_format       = I2S_CHANNEL_FMT_ALL_RIGHT,
    
64.     .communication_format = I2S_COMM_FORMAT_I2S,
    
65.     .intr_alloc_flags     = ESP_INTR_FLAG_LEVEL1,
    
66.     .dma_buf_count        = 6,
    
67.     .dma_buf_len          = 60,
    
68.     .use_apll             = false,
    
69.     .tx_desc_auto_clear   = true,
    
70.     .fixed_mclk           = 0
    
71.   };
    
72.   if (mode == MODE_MIC)
    
73.   {
    
74.     i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_RX | I2S_MODE_PDM);
    
75.   }
    
76.   else
    
77.   {
    
78.     i2s_config.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX);
    
79.   }
    
80. 
    
81.   err += i2s_driver_install(SPEAKER_I2S_NUMBER, &i2s_config, 0, NULL);
    
82. 
    
83.   i2s_pin_config_t tx_pin_config = {
    
84.     .bck_io_num           = CONFIG_I2S_BCK_PIN,
    
85.     .ws_io_num            = CONFIG_I2S_LRCK_PIN,
    
86.     .data_out_num         = CONFIG_I2S_DATA_PIN,
    
87.     .data_in_num          = CONFIG_I2S_DATA_IN_PIN,
    
88.   };
    
89.   err += i2s_set_pin(SPEAKER_I2S_NUMBER, &tx_pin_config);
    
90. 
    
91.   if (mode != MODE_MIC) {
    
92.     err += i2s_set_clk(SPEAKER_I2S_NUMBER, 16000, I2S_BITS_PER_SAMPLE_16BIT, I2S_CHANNEL_MONO);
    
93.   }
    
94. 
    
95.   i2s_zero_dma_buffer(SPEAKER_I2S_NUMBER);
    
96. }
    
97. 
    
98. void setup() {
    
99.   M5.begin(true, false, true);
    
100.   delay(50);
     
101.   M5.dis.drawpix(0,LED_COLOR_INACTIVE);
     
102. 
     
103.   //Speaker,Mic Initialize(Mic Mode)
     
104.   InitI2SSpeakerOrMic(MODE_MIC);
     
105. 
     
106.   //Create BLE Device
     
107.   BLEDevice::init("");
     
108. 
     
109.   //BLE Scan Initialize
     
110.   pBLEScan = BLEDevice::getScan();
     
111.   pBLEScan->setActiveScan(false); //Passive Scan
     
112.   
     
113.   delay(100);
     
114. }
     
115. 
     
116. void loop() {
     
117.   if(scanChimeDevice())
     
118.   {
     
119.     size_t bytes_written;
     
120. 
     
121.     M5.dis.drawpix(0,LED_COLOR_ACTIVE);
     
122.    
     
123.     //Set Speaker Mode
     
124.     InitI2SSpeakerOrMic(MODE_SPK);  
     
125.     //Write Speaker
     
126.     i2s_write(SPEAKER_I2S_NUMBER, chime_wav, sizeof(chime_wav), &bytes_written, portMAX_DELAY);
     
127.     i2s_zero_dma_buffer(SPEAKER_I2S_NUMBER);
     
128.     //Set Mic Mode
     
129.     InitI2SSpeakerOrMic(MODE_MIC);
     
130.    
     
131.     delay(DELAY_AFTERCHIME);
     
132.     M5.dis.drawpix(0,LED_COLOR_INACTIVE);
     
133.   }
     
134. 
     
135.   delay(100);
     
136.   M5.update();
     
137. }

复制代码

1. #include <M5Atom.h>
   
2. #include <BLEDevice.h>
   
3. #include <BLEUtils.h>
   
4. 
   
5. /* LED */
   
6. #define LED_COLOR_INACTIVE  0xF00000
   
7. #define LED_COLOR_ACTIVE    0x00F000
   
8. 
   
9. /* BLE */
   
10. BLEAdvertising *pAdv;
    
11. #define DEVICE_NAME "M5Atom-chime"
    
12. #define ADVERTISING_TIME 3000 //In miliseconds
    
13. 
    
14. void setAdvertisementData(BLEAdvertising *pAdvertising) {
    
15.   std::string strData = "";
    
16.   BLEAdvertisementData oAdvertisementData = BLEAdvertisementData();
    
17. 
    
18.   //Device Name
    
19.   oAdvertisementData.setName(DEVICE_NAME);
    
20. 
    
21.   //Flags
    
22.   oAdvertisementData.setFlags(0x01|0x04); // LE Limited Discoverable Mode | BR_EDR_NOT_SUPPORTED
    
23. 
    
24.   //Data
    
25.   strData += (char)0xff;                      //Type :Manufacture Specific
    
26.   strData += (char)0xff;                      //Company ID(L)
    
27.   strData += (char)0xff;                      //Company ID(H) :for Test(0xffff)
    
28.   strData += (char)0xff;                      //dmy Data
    
29.   strData = (char)strData.length() + strData; //Length
    
30.   oAdvertisementData.addData(strData);
    
31.   pAdvertising->setAdvertisementData(oAdvertisementData);
    
32. 
    
33.   //AdvertisementType
    
34.   pAdvertising->setAdvertisementType(ADV_TYPE_NONCONN_IND);
    
35. }
    
36. 
    
37. void setup() {
    
38.   M5.begin(true, false, true);
    
39.   delay(50);
    
40.   M5.dis.drawpix(0,LED_COLOR_INACTIVE);
    
41.   
    
42.    //Create BLE Device
    
43.   BLEDevice::init("");
    
44.    
    
45.   //Set AdvertisementData
    
46.   pAdv = BLEDevice::getAdvertising();
    
47.   setAdvertisementData(pAdv);
    
48.   
    
49.   delay(100);
    
50. }
    
51. 
    
52. void loop() {
    
53.   if (M5.Btn.isPressed())
    
54.   {
    
55.     M5.dis.drawpix(0,LED_COLOR_ACTIVE);
    
56.     pAdv->start();  //Start advertising
    
57.     delay(ADVERTISING_TIME);
    
58.     pAdv->stop();   //Stop advertising
    
59.     M5.dis.drawpix(0,LED_COLOR_INACTIVE);
    
60.   }
    
61.   
    
62.   delay(100);
    
63.   M5.update();
    
64. }

复制代码