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GPIO driver: Add an IOCTL command to get the pin type

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This commit is contained in:
Gregory Nutt
2016-08-01 12:09:00 -06:00
parent d0f6a23a32
commit 0f9fb09a53
2 changed files with 21 additions and 1 deletions
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include/nuttx/ioexpander/gpio.h
+6 -1
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@@ -60,6 +60,10 @@
* Argument: A pointer to an bool value to receive the result:
* false=low value; true=high value.
*
* Command: GPIOC_PINTYPE
* Description: Return the GPIO pin type.
* Argument: A pointer to an instance of type enum gpio_pintype_e
*
* Command: GPIOC_REGISTER
* Description: Register to receive a signal whenever there an interrupt
* is received on an input gpio pin. This feature, of course,
@@ -70,7 +74,8 @@
#define GPIOC_WRITE _GPIOC(1)
#define GPIOC_READ _GPIOC(2)
#define GPIOC_REGISTER _GPIOC(3)
#define GPIOC_PINTYPE _GPIOC(3)
#define GPIOC_REGISTER _GPIOC(4)
/****************************************************************************
* Public Types