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Add a test for PWM drivers

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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4202 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo
2011-12-19 23:06:41 +00:00
parent c0424dae99
commit b7edb56d6f
23 changed files with 937 additions and 134 deletions
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nuttx/include/nuttx/pwm.h
+5 -5
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@@ -36,17 +36,17 @@
#ifndef __INCLUDE_NUTTX_PWM_H
#define __INCLUDE_NUTTX_PWM_H
/* For the purposes of this driver, a PWM device is any devices and generates
* periodic outputs of controlled frequency and pulse width. Such is device
* might be use, for example, to perform pulse-width modulated output or
/* For the purposes of this driver, a PWM device is any device that generates
* periodic output pulses s of controlled frequency and pulse width. Such a
* device might be used, for example, to perform pulse-width modulated output or
* frequency/pulse-count modulated output (such as might be needed to control
* a stepper motor.
* a stepper motor).
*
* The PWM driver is split into two parts:
*
* 1) An "upper half", generic driver that provides the comman PWM interface
* to application level code, and
* 2) An "lower half" platform-specific driver that implements the low-level
* 2) A "lower half", platform-specific driver that implements the low-level
* timer controls to implement the PWM functionality.
*/