The-NIOSII-detailed-tutorial

说明：  PID控制pwm风扇，可吹小球，附带激光测距，可通过LCD显示(PID control PWM fan, can blow small ball, with laser ranging, can be displayed by LCD)

说明：  在STM32开发板上实现用光敏电阻控制LCD屏幕的亮度。(The brightness of LCD screen is controlled by photoresist on STM32 development board.)

基于STM32单片机，通过W5500以太网芯片下载APP的IAP程序，实测正常使用。(Based on the STM32 microcontroller, download the APP IAP program through the W5500 Ethernet chip, and measure the normal usage.)

stm32f103c8t6上面实现uart3的Irda功能接受红外字符，控制TIM4上面4个通道的pwm输出占空比(stm32f103c8t6 functions to achieve the above uart3 acceptance of Irda Infrared character, control TIM4 above 4 channel pwm output duty)

红外遥控解码，基于51单片机的例程，简单实用，我在学习单片机的时候用到的(Infrared remote control decoding, based on 51 MCU routine, simple and practical, I used the time to learn microcontroller)

MSP430F5529单片机的基本片内外设（包涵常用的 IO口、系统时钟、定时器、ADC、串口）的初始化和使用方法 以及经典的单总线温度传感器DS18b20进行温度检测 (The initializer for MSP430F5529 temperature data collection ，DS18b20)

说明：  高级例程-基于MINI板的 呼吸灯效果 采用TIM1的PWM实现；基本例程-USART收发；基于STM32的USB程序开发笔记(Advanced routine - the effect of breathing lamp based on mini board is realized by TIM1 PWM)

实现1.8寸tft彩屏的驱动，能够显示字符，汉字，以及图片。(Achieve 1.8-inch tft color screen driver, can display characters, characters, and images.)

其原理很简单，就是MSP430F14x系列单片机Timer A模块有一个比较/匹配功能，利用这一功能可以输出任意频率、任意占空比的方波，把这些方波输给蜂鸣器就可以播放了。当然要让蜂鸣器播放《最炫民族风》，最大的挑战是写C语言版的“乐谱”。所幸小时候学过五六年的小提琴，再加上物理竞赛的背景，因而对于乐谱、乐理、音频、节奏等等关键概念都略懂一二。废话不多说了，直接上源代码： (The principle is very simple, is MSP430F14x Series MCU Timer A module has a compare/match function, the use of this feature can be output at any frequency, arbitrary duty cycle square wave, square wave lost these can play a buzzer. Of course, to make the buzzer play " the most unusual national wind" , the biggest challenge is to write C-language version of " music." Fortunately, the child learned the violin in 2056, coupled with the physical contest background, and thus for sheet music, music theory, audio, rhythm, etc. have little knowledge of twelve key concepts. Ado, directly on the source code:)

RC522 SPI接口的51单片机程序例程(RC522 SPI)