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gpio: Add support for push-pull/open-drain output mode

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This attribute is not part of gpio standard attributes
so it's necessary to implement a custom version of this function

Signed-off-by: Nicola Ponte <nicola.ponte@u-blox.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Nicola Ponte
2017-06-30 17:01:37 +02:00
committed by Brendan Le Foll
parent be9fcf2b2d
commit 7d6164c136
4 changed files with 54 additions and 0 deletions
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17
api/mraa/gpio.h
View File

@@ -92,6 +92,15 @@ typedef enum {
MRAA_GPIO_ACTIVE_LOW = 1, /**< Resistive Low */
} mraa_gpio_input_mode_t;
/**
* Gpio output driver modes
*/
typedef enum {
MRAA_GPIO_OPEN_DRAIN = 0, /**< Open Drain Configuration */
MRAA_GPIO_PUSH_PULL = 1, /**< Push Pull Configuration */
} mraa_gpio_out_driver_mode_t;
/**
* Initialise gpio_context, based on board number
*
@@ -235,6 +244,14 @@ int mraa_gpio_get_pin_raw(mraa_gpio_context dev);
*/
mraa_result_t mraa_gpio_input_mode(mraa_gpio_context dev, mraa_gpio_input_mode_t);
/**
* Set Gpio output driver mode. This is not a standard feature, it needs custom implementation for each board
*
* @param dev The Gpio context
* @param mode Set output driver mode
* @return Result of operation
*/
mraa_result_t mraa_gpio_out_driver_mode(mraa_gpio_context dev, mraa_gpio_out_driver_mode_t mode);
#ifdef __cplusplus
}

19
api/mraa/gpio.hpp
View File

@@ -77,6 +77,14 @@ typedef enum {
MODE_IN_ACTIVE_LOW = 1, /**< Resistive Low */
} InputMode;
/**
* Gpio output driver modes
*/
typedef enum {
MODE_OUT_OPEN_DRAIN = 0, /**< Open Drain Configuration */
MODE_OUT_PUSH_PULL = 1, /**< Push Pull Configuration */
} OutputMode;
/**
* @brief API to General Purpose IO
*
@@ -336,6 +344,17 @@ class Gpio
return (Result )mraa_gpio_input_mode(m_gpio, (mraa_gpio_input_mode_t) mode);
}
/**
* Change Gpio output driver mode
*
* @param mode @param mode Set output driver mode
* @return Result of operation
*/
Result
outputMode(OutputMode mode)
{
return (Result) mraa_gpio_out_driver_mode(m_gpio, (mraa_gpio_out_driver_mode_t) mode);
}
private:
mraa_gpio_context m_gpio;