pt2258

简易数字电压表设计,日常生活可能需要用到，看看(Simple digital voltage meter, daily life may need to use)

说明：  ADS131A02与DAC8552驱动代码(ADS131A02 and DAC8552 Driver Code)

秒表程序，从0-60秒，有3个按键，启动，暂停，复位 带仿真和c51源码(second count program.It has three buttons.there are start pause,reset program. proteus and c51)

一个测距小车的设计，其中包含程序，proteus，pcb，论文，非常全面！( 1 Ranging car design, which includes program, proteus, pcb, papers, very comprehensive!)

说明：  称取食物热量，可以预设单位重量热量值。通过扫描压力传感器信号，实时显示重量及热量(a 51 MCU process weight food calorie)

使用stm32驱动SG90舵机 实现正反转 程序不是特别难 一看就能看懂(Using the STM32 driver SG90 actuator to achieve positive inversion procedure is not particularly difficult to see to understand)

RX8025T 时钟芯片，高精度，精度每天0.5秒 时间通过串口发送(RX8025T clock chip, high precision, accuracy of 0.5 seconds every time sent through the serial port)

MSP430按键程序，用于检测按键的触发跳出睡眠模式(MSP430 key procedures for the detection of the trigger out of sleep mode button)

stm32f4 adc 的代码，双通道，用DMA保存数据。(stm32f4 family c code, adc This example provides a short description of how to use the ADC peripheral to convert a regular channel in Dual interleaved mode using DMA in mode 3 with 5Msps. DMA mode 3 is used in interleaved mode in 6-bit and 8-bit resolutions. The Dual interleaved delay is configured 6 ADC clk cycles. On each DMA request (two data items are available) two bytes representing two ADC-converted data items are transferred as a half word. The data transfer order is similar to that of the DMA mode 2. A DMA request is generated each time 2 data items are available 1st request: ADC_CDR[15:0] = (ADC2_DR[7:0] << 8) | ADC1_DR[7:0] 2nd request: ADC_CDR[15:0] = (ADC2_DR[7:0] << 8) | ADC1_DR[7:0] The ADC1 and ADC2 are configured to convert ADC Channel 12, with conversion triggered by software. By this way, ADC channel 12 is converted each 6 cycles. In this example, the system clock is 168MHz, APB2 =84MHz and ADC clock = APB2 /2. Since ADCCLK=)

本程序基于单片机实现RTC实时时钟，简单易懂(The program is based MCU RTC real time clock, easy to understand)