GPIO HAL¶
The GPIO HAL definitions are in dev_gpio.h, it provides interfaces for gpio
driver to implement. Here is a diagram for the gpio interface.
Definitions¶
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group
DEVICE_HAL_GPIO_DEVSTRUCT contains definitions of gpio device structure.
This structure will be used in user implemented code, which was called Device Driver Implement Layer for gpio to use in implementation code. Application developer should use the GPIO API provided here to access to GPIO devices. BSP developer should follow the API definition to implement GPIO device drivers.
Defines
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DEV_GPIO_INFO_SET_EXTRA_OBJECT(gpio_info_ptr, extra_info)¶ Set extra information pointer of gpio info
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DEV_GPIO_INFO_GET_EXTRA_OBJECT(gpio_info_ptr)¶ Get extra information pointer of gpio info
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DEV_GPIO_BITS_MTHD_POLL¶ Method of all gpio bits set to poll
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DEV_GPIO_BITS_MTHD_INTERRUPT¶ Method of all gpio bits set to interrupt
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DEV_GPIO_BITS_MTHD_DEFAULT¶ Default method of all gpio bits should be poll for first open
Typedefs
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typedef struct dev_gpio_info
DEV_GPIO_INFO¶ gpio information struct definition
Informations about gpio open count, working status gpio registers and control block, gpio io direction and interrupt/poll for each bit of gpio
Note
Only available for gpio with max 32bits
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typedef struct dev_gpio_info *
DEV_GPIO_INFO_PTR¶
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struct
dev_gpio_info¶ - #include <dev_gpio.h>
gpio information struct definition
Informations about gpio open count, working status gpio registers and control block, gpio io direction and interrupt/poll for each bit of gpio
Note
Only available for gpio with max 32bits
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struct
dev_gpio¶ - #include <dev_gpio.h>
gpio device interface definition
Define gpio device interface, like gpio information structure, fuctions to open/close/control gpio, write or read data via gpio
Note
All this details are implemented by user in user porting code
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