hsSam

STM32 MacOS X Environment Setup

Table of Contents

• 1. Install JDK 8
• 2. Install Eclipse
  • Option 1: GNU MCU Eclipse IDE for C/C++ Developers
• 3. Cross Compile Toolchain (arm-none-eabi-*))
  • Option 1: GNU MCU Eclipse ARM Embedded GCC

• Option 2: GNU ARM Embedded Toolchain

hsSam

//container
Container(
  width: 200.0,
  height: 200.0,
  color: Colors.green,
  margin: EdgeInsets.symmetric(vertical: 20.0),
);

// Color 
Color _color = Colors.green;

hsSam

final random = Random();

// Generate a random width and height.
_width = random.nextInt(300).toDouble();
_height = random.nextInt(300).toDouble();

final r = random.nextInt(256);
final g = random.nextInt(256);
final b = random.nextInt(256);

hsSam

# 生成 dhparam.pem 文件, 在命令行执行任一方法:

# 方法1: 很慢
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

# 方法2: 较快
# 与方法1无明显区别. 2048位也足够用, 4096更强
openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 4096

hsSam

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048