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include/nuttx/timers/pwm.h: Correct some typos. arch/arm/src/stm32f0l0g0: Add PWM support.

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This commit is contained in:
Daniel Pereira Volpato
2019-10-17 12:00:57 -06:00
committed by Gregory Nutt
parent 2a271a5d62
commit ca52e33ba9
5 changed files with 3405 additions and 23 deletions
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include/nuttx/timers/pwm.h
+6 -4
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@@ -44,7 +44,7 @@
*
* The PWM driver is split into two parts:
*
* 1) An "upper half", generic driver that provides the comman PWM interface
* 1) An "upper half", generic driver that provides the common PWM interface
* to application level code, and
* 2) A "lower half", platform-specific driver that implements the low-level
* timer controls to implement the PWM functionality.
@@ -66,6 +66,7 @@
****************************************************************************/
/* Configuration ************************************************************/
/* CONFIG_PWM - Enables because PWM driver support
* CONFIG_PWM_PULSECOUNT - Some hardware will support generation of a fixed
* number of pulses. This might be used, for example to support a stepper
@@ -79,10 +80,11 @@
*/
/* IOCTL Commands ***********************************************************/
/* The PWM module uses a standard character driver framework. However, since
* the PWM driver is a device control interface and not a data transfer
* interface, the majority of the functionality is implemented in driver
* ioctl calls. The PWM ioctl commands are lised below:
* ioctl calls. The PWM ioctl commands are listed below:
*
* PWMIOC_SETCHARACTERISTICS - Set the characteristics of the next pulsed
* output. This command will neither start nor stop the pulsed output.
@@ -97,7 +99,7 @@
* PWMIOC_GETCHARACTERISTICS - Get the currently selected characteristics of
* the pulsed output (independent of whether the output is start or stopped).
*
* ioctl argument: A reference to struct pwm_info_s to recevie the
* ioctl argument: A reference to struct pwm_info_s to receive the
* characteristics of the pulsed output.
*
* PWMIOC_START - Start the pulsed output. The PWMIOC_SETCHARACTERISTICS
@@ -285,7 +287,7 @@ int pwm_register(FAR const char *path, FAR struct pwm_lowerhalf_s *dev);
* 1. The upper half driver calls the start method, providing the lower
* half driver with the pulse train characteristics. If a fixed
* number of pulses is required, the 'count' value will be nonzero.
* 2. The lower half driver's start() methoc must verify that it can
* 2. The lower half driver's start() method must verify that it can
* support the request pulse train (frequency, duty, AND pulse count).
* It it cannot, it should return an error. If the pulse count is
* non-zero, it should set up the hardware for that number of pulses