slyt277

好的声文同步程序，值得学习，适合于初学者，给大家共同分享(Good sound text synchronization process, it is worth learning, suitable for beginners, for everyone to share)

profibus dp 从站 软件通信协议的实现(profibus dp)

NXP LPC11xx 系列单片机IAP在线升级的研究。经过长时间的摸索，研究LPC1114 IAP在线升级，因此写下文档记录方便以后查阅，同时也给需要IAP在线升级的同仁提供参考。文档内容是实践过的，经过多次反复测试(NXP LPC11xx series MCU IAP online upgrade. LPC1114 IAP online upgrade after a long period of exploration, research, write a convenient documented after inspection, but also to the need to IAP online upgrade colleagues to provide a reference. Document content is practice, after repeated testing)

Led based voltage meter use pic16f676

说明：  通过光明电阻检测实现对光源的自动追踪，并在LCD12864显示对应光照强度。(The light source is automatically tracked by light resistance detection, and the corresponding illumination intensity is displayed on LCD12864.)

AVR汇编示例子程序集合，初学者可以 参考的源代码，上传供大学参考学习。(AVR compile a collection of the sample subroutine, beginners can refer to the source code, upload the University of reference for the study.)

Empty activity, not needed for this test.

说明：  modbus仿真设计，充当服务器的功能，在测试中具有很重要作用(Modbus simulation designed to serve as a server.It plays an important role in testing.)

实现函数发生，基于51单片机的汇编语言，可以实现正弦波，方波，三角波，锯齿波，频率可调(Realization function generator, based on 51 single-chip assembly language, you can achieve sine, square, triangle, ramp, adjustable frequency)

STM32F4系列串口接收函数,，程序已测试通过。(void USART1_IRQHandler(void) //串口1中断服务程序 { u8 Res #ifdef OS_TICKS_PER_SEC //如果时钟节拍数定义了,说明要使用ucosII了. OSIntEnter() #endif if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) //接收中断(接收到的数据必须是0x0d 0x0a结尾) { Res =USART_ReceiveData(USART1) //(USART1->DR) //读取接收到的数据 if((USART_RX_STA&0x8000)==0)//接收未完成 { if(USART_RX_STA&0x4000)//接收到了0x0d { if(Res!=0x0a) USART_RX_STA=0 //接收错误,重新开始 else USART_RX_STA|=0x8000 //接收完成了 } else //还没收到0X0D { if(Res==0x0d)USART_RX_STA|=0x4000 else { USART_RX_BUF[USART_RX_STA&0X3FFF]=Res USART_RX_STA++ if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0 //接收数据错误,重新开始接收 } } } } #ifdef OS_TICKS_PER_SEC //如果时钟节拍数定义了,说明要使用ucosII了. OSIntExit() #endif } )