dac_spi

待检测pcb板和标准pcb对比，然后对待测pcb腐蚀及膨胀处理，进行缺陷标注显示图像并输出焊盘缺失数，导线缺失数，短路数等。所以源图像均有，并再次测试无误，可以直接运行。(To be detected and the standard pcb board pcb contrast, then treat corrosion test pcb and the expansion process, defect labeling displays images and outputs missing number pad, missing a few wires, short circuit and number. So were the source image, and test again correctly, you can run directly.)

jtt　cc1101　的接收与发送的ｃ语言程序(Receiving and sending JTT cc1101 C language program)

PT100采温，485传输，基于AVR平台，C语音，单片机ATmega168(PT100 temperature taken, 485, based on the AVR platform, C language, microcontroller ATmega168)

51的4乘4键盘锁液晶时钟程序 带键值锁定(51 4 x 4 keypad lock with a key lock LCD clock program)

XPT2046 四线触摸屏控制芯片,优化、代码规范注释清晰。共同分享。(XPT2046 4 LINE touch screen controller driver code。)

STM32F429示波器源代码，实测可用。(STM32F429 oscilloscope source code, the actual measurement is available.)

说明：  stm32f103vet6实现printf重载(printf function about stm32f103vet6)

使用DS18b20温度传感器采集温度的数据，感兴趣的可以尝试一下啊(Using DS18b20 temperature sensor to collect temperature data, interested can try it.)

基于乐鑫的SDK的按键触发一键配网smartConfig模式上云端代码。(The key of SDK based on Lexin triggers the cloud code on smartConfig mode of one key distribution network.)

KS0108液晶显示驱动控制器，可以画点，直线和框51程序(KS0108 LCD controller driver, you can draw points, lines and boxes of 51 procedures)