[Beetle ESP32 C6 Mini Development Board] ADC and Bluetooth First Experience

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[Beetle ESP32 C6 Mini Development Board] ADC and Bluetooth First Experience [Copy link]

<div class='showpostmsg'>#【Beetle ESP32 C6 Mini Development Board】ADC and Bluetooth First Experience## One ADC chip has only one 12-bit ADC channel, which leads to three channels 4 5 6 as shown in the figure below <ignore_js_op> <img style="cursor:pointer;" id="aimg_811568" aid="811568" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231045jf3z3dtxttxhyk18.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231045jf3z3dtxttxhyk18.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811568_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>51ab86bba659126748111cb59bb4b12a.png</strong> <em class="xg1">(302.56 KB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811568" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811568&handlekey=savephoto_811568">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> The joystick needs to continuously sample two ADC channels. The sampling xy coordinate wiring is shown in the figure <ignore_js_op> <img style="cursor:pointer;" id="aimg_811564" aid="811564" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231043n1ppzp4rorepozee.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231043n1ppzp4rorepozee.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811564_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>image-20240526225339076.png</strong> <em class="xg1">(1.28 MB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811564" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811564&handlekey=savephoto_811564">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> The demo is in the sdk's `examples/ble_handle/main/continuous_read_main.c`. Slightly modify the sampling rate of channels 4 and 5 to reduce the length of each READ and improve real-time performance. The modified parts are as follows``` #define EXAMPLE_READ_LEN 16 static adc_channel_t channel[2] = {ADC_CHANNEL_4, ADC_CHANNEL_5}; adc_continuous_handle_cfg_t adc_config = { .max_store_buf_size = 256, .conv_frame_size = EXAMPLE_READ_LEN, }; ESP_ERROR_CHECK(adc_continuous_new_handle(&adc_config, &handle)); adc_continuous_config_t dig_cfg = { .sample_freq_hz = 1 * 1000, .conv_mode = EXAMPLE_ADC_CONV_MODE, .format = EXAMPLE_ADC_OUTPUT_TYPE, }; ``` Then you can get the sample value in time <ignore_js_op> <img style="cursor:pointer;" id="aimg_811565" aid="811565" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044b8a75tmqtqg4zgte.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044b8a75tmqtqg4zgte.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811565_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>image-20240526225227681.png</strong> <em class="xg1">(187.38 KB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811565" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811565&handlekey=savephoto_811565">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> ## Second Bluetooth If you want to use the development board as a Bluetooth device, you can refer to `examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c` The default example uses the Bluedroid protocol HID. Compile and run on the phone. Connecting the device will alternately set the sound addition and subtraction at intervals <ignore_js_op> <img style="cursor:pointer;" id="aimg_811567" aid="811567" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044f6ms6fcs8gds2fii.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044f6ms6fcs8gds2fii.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811567_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>image-20240516221728708.png</strong> <em class="xg1">(168.49 KB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811567" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811567&handlekey=savephoto_811567">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> To simulate other devices such as mouse devices, in this example, macro control is always used to configure menuconfig according to EXAMPLE_MOUSE ``` CONFIG_PARTITION_TABLE_SINGLE_APP_LARGE=y CONFIG_EXAMPLE_MOUSE_ENABLE=y CONFIG_BT_ENABLED=y CONFIG_BT_NIMBLE_ENABLED=y CONFIG_BT_CONTROLLER_DISABLED=y ``` Then compile and run <ignore_js_op> <img style="cursor:pointer;" id="aimg_811566" aid="811566" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044d9kn4hjn9al5x9nr.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231044d9kn4hjn9al5x9nr.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811566_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>image-20240522222354271.png</strong> <em class="xg1">(179.46 KB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811566" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811566&handlekey=savephoto_811566">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> Match the ESP device on the mobile phone and enter the pairing code 123456 to connect <ignore_js_op> <img style="cursor:pointer;" id="aimg_811563" aid="811563" src="/bbs/static/image/common/none.gif" onclick="zoom(this, this.getAttribute('zoomfile'), 0, 0, '0')" zoomfile="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231041tcj7qiyd3qqiq333.png" file="//bbs.eeworld.com.cn/data/attachment/forum/202405/26/231041tcj7qiyd3qqiq333.png" inpost="1" onmouseover="showMenu({'ctrlid':this.id,'pos':'12'})" /> <div class="tip tip_4 aimg_tip" id="aimg_811563_menu" style="position: absolute; display: none" disautofocus="true"> <div class="xs0"> <p><strong>image-20240526230517256.png</strong> <em class="xg1">(400.93 KB, downloads: 0)</em></p> <p> <a href="javascript:;" class="loginf" >download attach</a> <a href="javascript:;" onclick="showWindow(this.id, this.getAttribute('url'), 'get', 0);" id="savephoto_811563" url="home.php?mod=spacecp&ac=album&op=saveforumphoto&aid=811563&handlekey=savephoto_811563">save to album</a> </p> <p class="xg1 y">2024-5-26 23:10 上传</p> </div> <div class="tip_horn"></div> </div> </ignore_js_op> There are many demos related to Bluetooth and network. The demos provided are also very comprehensive and excellent SDK~~</div><script> var loginstr = '<div class="locked">To view all the contents of the post, please <a href="/bbs/member.php?mod=logging&action=login" style="color:#e60000" class="loginf">log in</a> or <a href="/bbs/member.php?mod=register_eeworld.php&action=wechat" style="color:#e60000" target="_blank">register</a></div>'; if(parseInt(discuz_uid)==0){ } </script><script type="text/javascript">(function(d,c){var a=d.createElement("script"),m=d.getElementsByTagName("script")[0],eewurl="//counter.eeworld.com.cn/pv/count/";a.src=eewurl+c;m.parentNode.insertBefore(a,m)})(document,523)</script>

Jacktang

The development board supports continuous ADC sampling, and the sampling rate and reading length can be adjusted by modifying the sample code in the SDK, which is an advantage.