12864液晶显示驱动程序：显示

单片机实现二进制数转换成ASCII码程序-MCU binary conversion into ASCII procedures

用一片ARM芯片，对电网中的谐波信号进行采集，然后通过GPRS发送给上位机，上位机对采集到的电网中的谐波信号进行分析。以确定电网中谐波的情况。-With an ARM chip, the harmonics of the grid signal acquisition, and then sent to the GPRS PC, PC to the power grid of the collection of harmonic signal analysis. To determine the grid in the case of harmonic.

收音模块TEA5767模块驱动程序及测试程序。-the driver of tea5767 module.

CF8051F040开发板的 timer_test程序-CF8051F040 development board

利用NRF905无线通信模块进行RS232通信-NRF905 use of wireless communication module RS232 communication

PCF8563驱动程序 PCF8563驱动程序-PCF8563 driver driver PCF8563

单片机点对点通信，分为主机部分和从机部分。-Single-chip point-to-point communications, the host is divided into parts and parts from the machine.

12864液晶中文字库。以及一些液晶的控制方法-12864 LCD English font

监控矩阵系统视频字符叠加,128路视频输入/32路视频输出.-Surveillance video characters superimposed matrix system, 128 video input/video output 32.

SPI是一个环形总线结构，由ss（cs）、sck、sdi、sdo构成，其时序其实很简单，主要是在sck的控制下，两个双向移位寄存器进行数据交换。 假设下面的8位寄存器装的是待发送的数据10101010，上升沿发送、下降沿接收、高位先发送。 那么第一个上升沿来的时候 数据将会是sdo=1；寄存器=0101010x。下降沿到来的时候，sdi上的电平将所存到寄存器中去，那么这时寄存器=0101010sdi，这样在8个时钟脉冲以后，两个寄存器的内容互相交换一次。这样就完成里一个spi时序。 -SPI bus is a ring structure, by ss (cs), sck, sdi, sdo composition, its timing is actually very simple, mainly under the control of the sck and two bi-directional shift register for data exchange. Assuming the following 8-bit register is loaded to send the data to be 10,101,010, rising to send, receive falling edge, high first sent. Well, the first rising edge to the time data will be sdo = 1 register = 0101010x. Falling edge comes, sdi on the level will be stored to the register, then register at this time = 0101010sdi, so 8 clock pulse later, the contents of two registers to exchange time. This will be completed in a spi timing.