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[Other resource] TimerMode_PWM

Description: he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.-he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only two discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain time is of poiTnt proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering (eg RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 for example to control the speed of DC motors or the brightness of electric lighting.
Platform: | Size: 1141 | Author: 赵树斌 | Hits:

[Other resource] l298

Description: l298调 速 程 序 常规的接法是这样的，EnableA接PWM信号，Input1输入正反控制信号， Input2是Input1经过反相以后的信号。L298的电平是与TTL电路相兼容的，一般是超过2.5V就为高电平。假如Input1为高电平时电机正转，那么低电平时就是反转，PWM信号控制电机的转速。 _________________
Platform: | Size: 1367 | Author: xujin | Hits:

[Other resource] PWM

Description: 转速表采用的是测量编码盘的信号，用STC89C2052单片机进行处理，根据转速输出0-5V电压
Platform: | Size: 1408 | Author: 林必中 | Hits:

[Other] S3C44B0X中文技术文档

Description:

 

介    绍
三星的S3C44B0X 16/32位RISC处理器被设计来为手持设备等提供一个低成本高性能的方案。
S3C44B0X提供以下配置：2.5V ARM7TDMI 内核带有8Kcache ;可选的internal SRAM;LCD Controller(最大支持256色STN，使用LCD专用DMA)；2-ch UART with handshake(IrDA1.0, 16-byte FIFO) / 1-ch SIO； 2-ch general DMAs / 2-ch peripheral DMAs with external request pins； External memory controller (chip select logic, FP/ EDO/SDRAM controller)； 5-ch PWM timers & 1-ch internal timer；Watch Dog Timer；71 general purpose I/O ports / 8-ch external interrupt source； RTC with calendar function； 8-ch 10-bit ADC； 1-ch multi-master IIC-BUS controller； 1-ch IIS-BUS controller； Sync. SIO interface and On-chip clock generator with PLL.。
S3C44B0X采用一种新的三星ARM CPU嵌入总线结构-SAMBA2，最大达66MHZ。

Platform: | Size: 78690 | Author: ssunshine | Hits:

[Other Embeded program] TimerMode_PWM

Description: he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting.-he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only two discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain time is of poiTnt proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering (eg RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 for example to control the speed of DC motors or the brightness of electric lighting.
Platform: | Size: 1024 | Author: | Hits:

[SCM] l298

Description: l298调 速 程 序 常规的接法是这样的，EnableA接PWM信号，Input1输入正反控制信号， Input2是Input1经过反相以后的信号。L298的电平是与TTL电路相兼容的，一般是超过2.5V就为高电平。假如Input1为高电平时电机正转，那么低电平时就是反转，PWM信号控制电机的转速。 _________________ -l298 procedures conventional speed connection that is the case, EnableA then PWM signal, Input1 input positive and negative control signals, Input2 is Input1 through after RP signal. L298 level is compatible with TTL circuits, and is generally more than 2.5V for the high. If Input1 is high when the motor is transferred, then that is when low-level inversion, PWM signal to control motor speed. _________________
Platform: | Size: 1024 | Author: | Hits:

[SCM] PWM

Description: 转速表采用的是测量编码盘的信号，用STC89C2052单片机进行处理，根据转速输出0-5V电压-Tachometer is used in measuring the signal encoded disk with STC89C2052 single-chip processing, in accordance with speed 0-5V output voltage
Platform: | Size: 1024 | Author: 林必中 | Hits:

[SCM] pwm_main

Description: 一个51MCU.电压0~5V输入转PWM输出控制的原代码.-A 51MCU. Voltage 0 ~ 5V input to PWM output control of the original code.
Platform: | Size: 3072 | Author: 暗夜残魂 | Hits:

[SCM] a

Description: PWM经过RC滤波产生电压,经过XTR115产生4-20mA电流输出,要点是XTR115的电压输入问题,自身为两线制,+5V输出提供不了较大电流,需要用DCDC,RC滤波采用钽电容和4.7k-4.9k的低温漂电阻能得到较高线形度,PWM输出为AVR单片机16位,模式15,不分频-PWM voltage generated through RC filter, after XTR115 have 4-20mA current output, the key points of the voltage input XTR115 problems, their own two-wire system,+ 5V output can provide a larger current, need to DCDC, RC filter using tantalum capacitors and 4.7k-4.9k resistor at low temperature drift can be a higher degree of linear, PWM output for the AVR Singlechip 16, mode 15, regardless of the frequency
Platform: | Size: 4096 | Author: niucunfei | Hits:

[SCM] PWM

Description: pwm由PB.0输出 8M晶体 vcc：5v 仅使用一个八位定时器timer2 波形比较准确，用示波器和实测都已经通过。 分辨率为20微秒-pwm from PB.0 output 8M crystal vcc: 5v only eight timer Timer2 using a more accurate waveform, measured using oscilloscope and have already passed. A resolution of 20 microseconds
Platform: | Size: 932864 | Author: 李树峰 | Hits:

[SCM] PWM

Description: 这是一个单片机进行脉宽调制(PWM) 直流电机调速测试程序.UNL2003提供电机驱动电流.(<=500MA/5V)，使用六个按键实现六种不同速度 -This is a single chip for pulse width modulation (PWM) DC Motor Speed test procedure. UNL2003 to provide motor drive current. (< = 500MA/5V), using the six keys to achieve the speed of six different
Platform: | Size: 1024 | Author: qcmc | Hits:

[SCM] 915pwm07.17.02

Description: LPC932为例：创建一个脉宽调制信号的定时模式6 由Christian Kulig ，飞利浦半导体12/06/02 导言： 在LPC932可以用来创建一个脉宽调制PWM信号。 这是一个模拟信号，只有2离散水平，例如0V 和5V和恒定时期。目前的价值在这个信号 某一点的时间成正比其占空比。这是 高一期的时间除以时期。它也可以被 计算出的平均价值在某一特定时期。那个 意味着低通滤波后， （如RC电路）的信号变得 模拟，实际值所控制的微控制器。那个 脉宽调制功能使LPC932控制的速度，例如 直流电动机或电力照明亮度。 描述： 通用定时器表＃ t1的LPC932设置为PWM模式6 。 在此模式变成8位上升柜台特别8位 重载溢流。重载价值观的交替和代表 高级时间和减去一个时期的时候（ =低时间）的 PWM信号。每个溢出就中断或切换的 某端口引脚。 指定的端口引脚上T1是P0.7 。 例如交替的增加和减少的占空比的 PWM信号端口引脚P0.7介于0 ％和100 ％ 。 请注意，在Keil公司MCB900局此端口引脚不 连接到任何的发光二极管，然而的PWM可显示 与示波器。-LPC932 EXAMPLE: CREATING A PWM SIGNAL USING A TIMER IN MODE 6 by Christian Kulig, Philips Semiconductor 12/06/02 INTRODUCTION: The LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain point of time is proportional to its Duty Cycle. That s the High Time during one period divided by the period. It can also be calculated as the average value during a particular period. That means after low pass filtering, (e.g. RC circuit) the signal becomes analog, with an actual value controlled by the microcontroller. The PWM functionality enables the LPC932 to control for example the speed of DC motors or the brightness of electric lighting. DESCRIPTION: The general purpose timer T1 of the LPC932 is set up to PWM Mode 6. In this mode it becomes a 8 bit up-counter with a special 8 bit reload on overflow. The reload
Platform: | Size: 10240 | Author: your name | Hits:

[SCM] PWM

Description: PWM脉宽调制 这是一个单片机进行脉宽调制(PWM) 直流电机调速测试程序. UNL2003提供电机驱动电流.(<=500MA/5V) 使用六个按键实现六种不同速度-PWM脉宽调制 这是一个单片机进行脉宽调制(PWM) 直流电机调速测试程序. UNL2003提供电机驱动电流.(<=500MA/5V) 使用六个按键实现六种不同速度
Platform: | Size: 1024 | Author: wuboqi | Hits:

[SCM] Timer1_pwm

Description: 利用AVR单片机的定时器1分别从PB1（OC1A）和PB2（OC1B）两引脚输出PWM波形。为了演示PWM的功率调节功能，我们在PB1和PB2引脚分别接了发光二极管，用10K电位器模块从PC0引脚接入0 - 5V电压。程序中，主循环内不断采集ADC端口0（PC0引脚）的电压值，根据变化改变OCR1A和OCR1B两个输出比较寄存器的值。PB1和PB2引脚上的PWM波形也随之发生改变，从而调节了送给发光二极管的电压，控制发光二极管的明暗。实验时，调节电位器的电阻值改变电压，会看到两个发光二极管明暗变化，但变化的方向相反，即一个越来越亮，一个越来越暗，反过来一样。这是因为OC1A和OC1B两个引脚输出的波形不一样，一个是升序计数，一个降序计数，连个波形是相互取反的-利用AVR单片机的定时器1分别从PB1（OC1A）和PB2（OC1B）两引脚输出PWM波形。为了演示PWM的功率调节功能，我们在PB1和PB2引脚分别接了发光二极管，用10K电位器模块从PC0引脚接入0- 5V电压。程序中，主循环内不断采集ADC端口0（PC0引脚）的电压值，根据变化改变OCR1A和OCR1B两个输出比较寄存器的值。PB1和PB2引脚上的PWM波形也随之发生改变，从而调节了送给发光二极管的电压，控制发光二极管的明暗。实验时，调节电位器的电阻值改变电压，会看到两个发光二极管明暗变化，但变化的方向相反，即一个越来越亮，一个越来越暗，反过来一样。这是因为OC1A和OC1B两个引脚输出的波形不一样，一个是升序计数，一个降序计数，连个波形是相互取反的
Platform: | Size: 130048 | Author: kevin cheng | Hits:

[Embeded-SCM Develop] STC12C5204ADPPWMPP3^7Puart

Description: STC12C5204AD单片机PWM输出程序，利用自带的PWM输出，即P3.7口输出PWM波，PWm频率为3.6K，可以通过串口来修改PWM波的占空比，PWM输出0-5V，精度为0.1V，在实验板上验证通过。-STC12C5204AD microcontroller PWM output procedures, the use of built-in PWM output, PWM output is P3.7 mouth, PWm frequency is 3.6K, through the serial port to modify the duty cycle of PWM wave, PWM output 0-5V, 0.1V precision , verified by the experimental board.
Platform: | Size: 24576 | Author: | Hits:

[DSP program] PWM

Description: 恒速运行 请将直流电机线接在+5V P12对应的端子上(步进马达接口出)-Constant speed DC set connected to the+5 V P12 line of the corresponding terminals (stepper motor interface out)
Platform: | Size: 1024 | Author: zhou | Hits:

[Other Embeded program] pwm

Description: msp430g2553// Description: A single sample is made on A10 with reference to internal // 1.5V Vref. Software sets ADC10SC to start sample and conversion - ADC10SC // automatically cleared at EOC. ADC10 internal oscillator/4 times sample // (64x) and conversion. In Mainloop MSP430 waits in LPM0 to save power until // ADC10 conversion complete, ADC10_ISR will force exit from any LPMx in // Mainloop on reti. Temperaure in oC stored in IntDegC, oF in IntDegF. // Uncalibrated temperature measured from device to device will vary with // slope and offset - please see datasheet. // ACLK = n/a, MCLK = SMCLK = default DCO ~1.2MHz, ADC10CLK = ADC10OSC/4 -msp430g2553// Description: A single sample is made on A10 with reference to internal // 1.5V Vref. Software sets ADC10SC to start sample and conversion- ADC10SC // automatically cleared at EOC. ADC10 internal oscillator/4 times sample // (64x) and conversion. In Mainloop MSP430 waits in LPM0 to save power until // ADC10 conversion complete, ADC10_ISR will force exit from any LPMx in // Mainloop on reti. Temperaure in oC stored in IntDegC, oF in IntDegF. // Uncalibrated temperature measured from device to device will vary with // slope and offset- please see datasheet. // ACLK = n/a, MCLK = SMCLK = default DCO ~1.2MHz, ADC10CLK = ADC10OSC/4
Platform: | Size: 1024 | Author: sc | Hits:

[SCM] zhi-liu-dian-ji-L298-PWM

Description: stc12c5a60s2产生PWM经过L298控制5V直流电机-stc12c5a60s2 generate PWM control 5V DC motor through L298
Platform: | Size: 20480 | Author: 学生 | Hits:

[Embeded-SCM Develop] PWM（恒速运行）

Description: PWM恒速运行 通过本例程了解pwm的基本原理 请将直流电机线接在+5v p12对应的端子上（步进马达接口出）(PWM constant speed operation Understand the basic principles of PWM by this routine Please connect the DC motor to the terminal of the +5v p12 (step motor interface).)
Platform: | Size: 20480 | Author: WiZthsueil | Hits:

[Embeded-SCM Develop] 汇编

Description: pwm脉冲输出，占空比可调，汇编程序附电路，仿真调试压缩包。5V挂载18V电压(PWM pulse output ,PWM pulse output, adjustable duty ratio, the assembler of circuit simulation and debugging, compressed package. 5V mount 18V voltage.)
Platform: | Size: 7168 | Author: 杰诉 | Hits:
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