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ds
DS1302 说明以及驱动程序 资料翻译
单片机学习必看(DS1302 instruction)
- 2013-05-07 16:41:43下载
- 积分:1
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readFLASH-writeLCD
单片机利用SPI总线从flash读取图像数据并通过SPI写入液晶屏。(Microcontroller using SPI bus to read image data from the flash and write into the LCD screen via the SPI interface.)
- 2021-04-24 11:08:47下载
- 积分:1
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CM240128-7
240*128 带中文字库的LCD模块的驱动
平台:ARM linux (240* 128 with a Chinese font LCD module driven platforms : ARM Linux)
- 2007-03-23 13:12:47下载
- 积分:1
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ADXL345-Manual-Chinese
ADXL345 加速度计 用户手册 中文资料(ADXL345 accelerometer User Manual Chinese data)
- 2013-11-05 22:52:14下载
- 积分:1
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anchuanG5A4015
安川G5A4015开关电源电路,请大家学习参考
。欢迎下载学习(Yaskawa G5A4015 switching power supply circuit, learning reference. Welcome to download learning)
- 2013-04-06 15:52:18下载
- 积分:1
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electronic-calendar-program
用C51编写的电子万年历时钟,并亲测好用(C51 prepared electronic calendar, and pro-test useful)
- 2014-05-10 07:44:15下载
- 积分:1
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200711-0054-05
TMS28335初始化完成之后,
1、 先DDS产生73.35hz的方波。(问流量管固定频率)
2、 乘法器的另一个数字端输入乘数直接给一个固定值(按照5v),系数是固定的就是对应PID输出的那个接口,串行十二位信号输出(需要先定好一个GPIO接口)。
3、 再延迟一定的时间0.1s或其他时间之后,开始ad采集信号,分别采两路AD信号,此时不稳定(为什么要等到一定的幅值才开始采集AD信号)
4、 选择250点估计一个频率,频率估计的方法采用计算峰值次数的方法或者过零点,总之是为了保证精度采用时域估计的算法,这一块主要是一个扫频子程序,计算频率共振点。
5、 之后改变DDS的输出频率,循环对512点的数据进行扫频的处理
6、 频率控制完成之后,就可以缓慢降低PID控制输出的参数,此时暂时不计算频率,通过不断调整系数使AB的幅度保持在1 的范围内。
7、 测试幅度控制稳定之后a、采用幅度和频率同时控制b。采集数据进入频率估计和相位差估计的后续程序的大循环
8、 注意:采样和控制是同时进行的,所以要设置中断,以及看懂AD的程序,以及内部存储以及数据处理资源的分配。
(TMS28335 initialization is complete,
1, the first DDS generated square wave of 73.35hz. (Q flow tube fixed frequency)
2, another digital side of the multiplier input multiplier directly to a fixed value (in accordance with 5v), the coefficient is fixed corresponding PID output interface, serial twelve signal output (need to be a good one GPIO interface).
3, and then after a certain time delay 0.1s or other time, ad signal acquisition were collected two AD signal instability (Why wait until a certain amplitude began collecting AD signal)
4, 250 point estimate a frequency, frequency estimation method using the method of calculation of the number of peak or zero crossing, in short, in order to ensure the accuracy of time-domain estimation algorithm, this piece is a sweep subroutine to calculate the frequency resonance point.
5, after the change of the output frequency of the DDS data of 512 points, the loop processing Sweep
6, after the completion of the frequency control, it can sl)
- 2013-04-07 15:03:14下载
- 积分:1
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kcsjj
Acquisition and Processing of the speech signal, digital signal processing class-based, Combined with PCA scale invariant feature transform (SIFT) algorithm, Including stochastic gradient algorithm, the relative gradient algorithm.
- 2017-11-14 13:24:23下载
- 积分:1
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dq_transform
dq变换法程序,用于电能质量的监测和有功电流或无功电流的计算等。(dq transform procedures for power quality monitoring and active current or reactive current calculation.)
- 2007-10-01 20:09:50下载
- 积分:1
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UARTqq
增强型单片机c8051f230与2.4G射频芯片所组成的无线通信系统,通过串口进行无线通信。文件内为汇编源程序。(C8051f230 with enhanced single-chip 2.4G RF chip which consists of wireless communication systems, through the serial port for wireless communications. Source file for compilation.)
- 2009-03-20 21:42:57下载
- 积分:1