The life I desired

最近在练听力,此为摘录,翻译地很漂亮!
That must be the story of innumerable couples,and the pattern of life it offers has a homely grace.It reminds you of a placid rivulet,meandering smoothly through green pastures and shaded by pleasant trees,till at last it falls into the vasty sea;but the sea is so calm,so silent,so indifferent,that you are troubled suddently by a vague uneasiness.Perhaps it is only by a kink in my nature,strong in me even in those days,that I felt in such an existence,the share of the great majority,something amiss.I recognized its social value.I saw its ordered happiness,but a fever in my blood asked for a wilder course.There seemed to me something alarming in such easy delights.In my heart was desire to live more dangerously.I was not unprepared for jagged rocks and treacherous shoals,if I could only have change----change and the exicitement of unforeseen.

  这一定是世间无数对夫妻的生活写照,这种生活模式给人一种天伦之美。它使人想起一条平静的溪流,蜿蜒畅游过绿茵的草场,浓荫遮蔽,最后注入烟波浩渺的汪洋大海;但是大海太过平静,太过沉默,太过不动声色,你会突然感到莫名的不安。也许这只是我自己的一种怪诞想法,在那样的时代,这想法对我影响很深:我觉得这像大多数人一样的生活,似乎欠缺了一点儿什么。我承认这种生活有社会价值,我也看到了它那井然有序的幸福,但我血液里的冲动却渴望一种更桀骜不驯的旅程.这样的安逸中好像有一种叫我惊惧不安的东西.我的心渴望一种更加惊险的生活。只要生活中还能有变迁———以及不可知的刺激,我愿意踏上怪石嶙峋的山崖,奔赴暗礁满布的海滩。

转载于:https://www.cnblogs.com/coolar/archive/2006/12/07/585862.html

### Cubmax PWM Configuration and Usage In the context of motor control or embedded systems, configuring Pulse Width Modulation (PWM) with Cubmax involves setting up specific registers that dictate how the signal behaves. For devices like accelerometers which use addresses such as `ACCEL_ADDR_WRITE` defined as `0xA6`, it's important to note that these definitions pertain more directly to I2C communication rather than PWM setup[^1]. However, when discussing PWM within an embedded system framework similar to what might be used alongside sensors configured via I2C commands: #### Register Setup for PWM Control The configuration typically requires defining parameters including frequency, duty cycle, polarity, and mode of operation. In some platforms, especially those requiring hardware-specific configurations mentioned elsewhere[^2], this could involve writing to dedicated PWM control registers. For demonstration purposes, consider a simplified example using pseudo-code relevant to initializing a PWM channel intended for controlling motors: ```c // Initialize PWM module void init_pwm(void){ // Enable clock source for PWM peripheral SYSCTL_RCGCPWM |= 0x01; // Wait until the PWM module is ready while((SYSCTL_PRPWM & 0x01) == 0); // Configure PWM generator settings PWMGenConfigSet(PWM_BASE, GENERATOR_0, PWM_GEN_MODE_DOWN | PWM_GEN_MODE_NO_SYNC); // Set period value corresponding to desired frequency PWMPulseWidthSet(PWM_BASE, PWM_OUT_0, LOAD_VALUE * DUTY_CYCLE / 100); // Load counter values into generator PWMGenPeriodSet(PWM_BASE, GENERATOR_0, LOAD_VALUE); } // Start PWM output on selected pin(s) void start_pwm_output(){ // Enable specified PWM outputs PWMOutputState(PWM_BASE, OUTPUTS_ENABLE_MASK, true); } ``` This code snippet illustrates basic initialization steps necessary before generating a PWM waveform suitable for driving actuators or other loads. Note that actual register names (`SYSCTL_RCGCPWM`, etc.) depend heavily upon the microcontroller being utilized and should refer closely to manufacturer documentation. #### Practical Application Example When applying PWM specifically towards motor speed regulation, adjusting the duty cycle allows precise modulation over rotational velocity without altering supply voltage levels significantly. This approach can also extend battery life by reducing power consumption during periods of lower demand. --related questions-- 1. How does changing the PWM frequency impact motor performance? 2. What considerations must one take into account when selecting appropriate load resistors for PWM-driven circuits? 3. Can you provide examples of common pitfalls encountered while implementing PWM in real-world applications? 4. Is there any difference between software-based versus hardware-assisted PWM generation methods?
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