BPI:bit Webduino简介与基础功能测试

Author： HulkW
发布时间：February 7, 2018
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Categories： ESP32学习

**BPI:bit Webduino是BPI与Webduino合作出品的一块主打STEAM创客教育的一款产品。**

github地址：[https://github.com/yelvlab/BPI-bit_Webduino](https://github.com/yelvlab/BPI-bit_Webduino)

开发板[详细信息](http://forum.banana-pi.org/t/bpi-webduino-bit-board-for-steam-education/4854)

![interface](https://forum.banana-pi.org.cn/uploads/default/optimized/2X/9/94a8e546b835ab912a72c8624531442200670550_1_690x389.JPG)

<p>具体硬件不做多介绍，下面开始说关于基础功能测试部分。</p>

## 软件环境：

Atom+PlatformIO/VS Code+PlatformIO（两个都可以，我也两个都安装了，各有长处，唯一的缺点就是都需要科学上网）

扩展包：ESP32平台包&amp;NeoPixelBus库

## 测试内容：

1. WS2812可编程全色彩LED测试循环三次（显示颜色顺序：Red、Blue、Green、white、Black）

2. ADC采样三次（通道：ADC1_CH0(LUM0)/ADC1_CH3(LUM1)/ADC1_CH6(TEMP)）

3. Wi-Fi扫描一次（扫描可用Wi-Fi信号以及信号强度）

4. 蜂鸣器测试三次（采用占空比渐变的方式循环测试三次）

状态监控：通过串口查看测试状态（串口配置：115200-8-N-1）

测试视频：[Banana pi BPI-webduino:bit function demo](https://www.youtube.com/watch?v=auTURJdbIYE&amp;feature=youtu.be)(视频来自油管)
</ul>
## 测试代码
	//BIT NEW
	//BPI - BIT test code
	#include <Arduino.h>
	#include <NeoPixelBus.h>
	#include "WiFi.h"

#define LEDC_CHANNEL_0 0
	#define LEDC_TIMER_13_BIT 13
	#define LEDC_BASE_FREQ 4500

const char *ssid = "SSID";
	const char *password = "PASSWD";

const uint16_t PixelCount = 25;
	const uint8_t PixelPin = 4;

#define colorSaturation 64
	#define delay_ms 500

#define bout 3

NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount, PixelPin);

RgbColor red(colorSaturation, 0, 0);
	RgbColor green(0, colorSaturation, 0);
	RgbColor blue(0, 0, colorSaturation);
	RgbColor white(colorSaturation);
	RgbColor black(0);

HslColor hslRed(red);
	HslColor hslGreen(green);
	HslColor hslBlue(blue);
	HslColor hslWhite(white);
	HslColor hslBlack(black);

#define LUM0 36 //ADC1_CH0
	#define LUM1 39 //ADC1_CH3
	#define Temp 34 
	#define Buzzer 25

#define BottomA 35
	#define BottomB 27

int LUM_Value0 = 0;
	int LUM_Value1 = 0;
	int Temp_value = 0;

int adTestFreq = 0;
	int wifiTestFreq = 0;
	int ledTestFreq = 0;
	int BuzzerTestFreq = 0;

int brightness = 0;
	int fadeAmount = 5;

void ledcAnalogWrite(uint8_t channel, uint32_t value)
	{
		// calculate duty, 8191 from 2 ^ 13 - 1 (2 ^ LEDC_TIMER_13_BIT - 1)
		//value_MAX = 255
		uint32_t duty = (8191 / 255) * value;
		// write duty to LEDC
		ledcWrite(channel, duty);
	}

void setup()
	{
		Serial.begin(115200); //Serial Port Config 115200-8-N-1
		while (!Serial)
			; // wait for serial attach

Serial.println();
		Serial.println("Initializing...");
		Serial.flush();

// this resets all the neopixels to an off state
		strip.Begin();
		strip.Show();

Serial.println();
		Serial.println("BPI-BIT Function Test Demo");
		Serial.println("Running...");
		Serial.println();

ledcSetup(LEDC_CHANNEL_0, LEDC_BASE_FREQ, LEDC_TIMER_13_BIT);
		ledcAttachPin(Buzzer, LEDC_CHANNEL_0);
	}

void loop()
	{
		/**************************************************************
		 **************************************************************
		 ***Board:BPI-Webduino:BIT                                  ***
		 ***Function:LED(WS2812) Test                               ***
		 **************************************************************
		 *************************************************************/
		Serial.println();
		Serial.println("LED test!!!");
		Serial.println();
		for (ledTestFreq = 0; ledTestFreq < bout; ledTestFreq++)
		{
			int i;
			delay(delay_ms);
			Serial.println("Colors R");
			for (i = 0; i <= PixelCount - 1; i++)
			{
				strip.SetPixelColor(i, hslRed);
				strip.Show();
			}

delay(delay_ms);
			Serial.println("Colors B");
			for (i = 0; i <= PixelCount - 1; i++)
			{
				strip.SetPixelColor(i, hslBlue);
				strip.Show();
			}

delay(delay_ms);
			Serial.println("Colors G");
			for (i = 0; i <= PixelCount - 1; i++)
			{
				strip.SetPixelColor(i, hslGreen);
				strip.Show();
			}

delay(delay_ms);
			Serial.println("Colors W");
			for (i = 0; i <= PixelCount - 1; i++)
			{
				strip.SetPixelColor(i, hslWhite);
				strip.Show();
			}

delay(delay_ms);
			Serial.println("Turn Off");
			for (i = 0; i <= PixelCount - 1; i++)
			{
				strip.SetPixelColor(i, hslBlack);
				strip.Show();
			}

Serial.println();
		}

Serial.println("--Over--");

/**************************************************************
		 **************************************************************
		 ***Board:BPI-Webduino:BIT                                  ***
		 ***Function:ADC Test                                       ***
		 **************************************************************
		 *************************************************************/
		Serial.println();
		Serial.println("ADC test!!!");
		Serial.println();
		for (adTestFreq = 0; adTestFreq < bout; adTestFreq++)
		{
			// turn the LED on (HIGH is the voltage level)
			LUM_Value0 = analogRead(LUM0);
			LUM_Value1 = analogRead(LUM1);
			Temp_value = analogRead(Temp);

Serial.println();
			Serial.println("----LUM&Temp Test(AD Test)----");

//LUM0--ADC1_CH0-Pin:IO36
			Serial.print("LUM0:");
			Serial.print(LUM_Value0);
			Serial.println();

//LUM1--ADC1_CH3-Pin:IO39
			Serial.print("LUM1:");
			Serial.print(LUM_Value1);
			Serial.println();

//Temp--ADC2_CH7-Pin:IO27
			Serial.print("TEMP:");
			Serial.print(Temp_value);
			Serial.println();

delay(delay_ms);
			Serial.println();
		}

Serial.println("--Over--");

// //Wi-Fi connect
		// Serial.print("Connecting to ");
		// Serial.println(ssid);
		// WiFi.begin(ssid, password);
		// while (WiFi.status() != WL_CONNECTED)
		// {
		//     delay(500);
		//     Serial.print(".");
		// }
		// Serial.println("WiFi connected");
		// Serial.println("IP address: ");
		// Serial.println(WiFi.localIP());
		// Serial.println("Setup done");
		// Serial.println("");
		// WiFi.disconnect();

for (wifiTestFreq = 0; wifiTestFreq < 1; wifiTestFreq++)
		{
			Serial.println("scan start");

// WiFi.scanNetworks will return the number of networks found
			int n = WiFi.scanNetworks();
			Serial.println("scan done");
			if (n == 0)
			{
				Serial.println("no networks found");
			}
			else
			{
				Serial.print(n);
				Serial.println(" networks found");
				for (int j = 0; j < n; ++j)
				{
					// Print SSID and RSSI for each network found
					Serial.print(j + 1);
					Serial.print(": ");
					Serial.print(WiFi.SSID(j));
					Serial.print(" (");
					Serial.print(WiFi.RSSI(j));
					Serial.print(")");
					Serial.println((WiFi.encryptionType(j) == WIFI_AUTH_OPEN) ? " " : "*");
					delay(10);
				}
			}
			Serial.println("");

// Wait a bit before scanning again
			delay(2000);
		}

Serial.println("--Over--");

Serial.println("Buzzer is fading");
		for (BuzzerTestFreq = 0; BuzzerTestFreq < bout; BuzzerTestFreq++)
		{
			for (brightness = 0; brightness < 255; brightness++)
			{
				Serial.print(".");
				// set the brightness on LEDC channel 0
				ledcAnalogWrite(LEDC_CHANNEL_0, brightness);

// change the brightness for next time through the loop:
				brightness = brightness + fadeAmount;

// reverse the direction of the fading at the ends of the fade:
				if (brightness <= 0 || brightness >= 255)
				{
					fadeAmount = -fadeAmount;
				}
				// wait for 30 milliseconds to see the dimming effect
				delay(30);
			}

Serial.println();
			ledcAnalogWrite(LEDC_CHANNEL_0, 0);
		}
		Serial.println("--Over--");
		
		Serial.println("---------Test Over !!!---------");
	}

Last modification：March 26, 2018

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BPI:bit Webduino简介与基础功能测试

HulkW • 2018 年 02 月 07 日