fsfw/hal/src/fsfw_hal/common/gpio/gpioDefinitions.h

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#ifndef COMMON_GPIO_GPIODEFINITIONS_H_
#define COMMON_GPIO_GPIODEFINITIONS_H_
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#include <map>
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#include <string>
#include <unordered_map>
using gpioId_t = uint16_t;
namespace gpio {
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enum Levels : uint8_t { LOW = 0, HIGH = 1, NONE = 99 };
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enum Direction : uint8_t { IN = 0, OUT = 1 };
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enum GpioOperation { READ, WRITE };
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enum class GpioTypes {
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NONE,
GPIO_REGULAR_BY_CHIP,
GPIO_REGULAR_BY_LABEL,
GPIO_REGULAR_BY_LINE_NAME,
CALLBACK
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};
static constexpr gpioId_t NO_GPIO = -1;
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using gpio_cb_t = void (*)(gpioId_t gpioId, gpio::GpioOperation gpioOp, gpio::Levels value,
void* args);
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} // namespace gpio
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/**
* @brief Struct containing information about the GPIO to use. This is
* required by the libgpiod to access and drive a GPIO.
* @param chipname String of the chipname specifying the group which contains the GPIO to
* access. E.g. gpiochip0. To detect names of GPIO groups run gpiodetect on
* the linux command line.
* @param lineNum The offset of the GPIO within the GPIO group.
* @param consumer Name of the consumer. Simply a description of the GPIO configuration.
* @param direction Specifies whether the GPIO should be used as in- or output.
* @param initValue Defines the initial state of the GPIO when configured as output.
* Only required for output GPIOs.
* @param lineHandle The handle returned by gpiod_chip_get_line will be later written to this
* pointer.
*/
class GpioBase {
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public:
GpioBase() = default;
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GpioBase(gpio::GpioTypes gpioType, std::string consumer, gpio::Direction direction,
gpio::Levels initValue)
: gpioType(gpioType), consumer(consumer), direction(direction), initValue(initValue) {}
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virtual ~GpioBase(){};
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// Can be used to cast GpioBase to a concrete child implementation
gpio::GpioTypes gpioType = gpio::GpioTypes::NONE;
std::string consumer;
gpio::Direction direction = gpio::Direction::IN;
gpio::Levels initValue = gpio::Levels::NONE;
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};
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class GpiodRegularBase : public GpioBase {
public:
GpiodRegularBase(gpio::GpioTypes gpioType, std::string consumer, gpio::Direction direction,
gpio::Levels initValue, int lineNum)
: GpioBase(gpioType, consumer, direction, initValue), lineNum(lineNum) {}
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// line number will be configured at a later point for the open by line name configuration
GpiodRegularBase(gpio::GpioTypes gpioType, std::string consumer, gpio::Direction direction,
gpio::Levels initValue)
: GpioBase(gpioType, consumer, direction, initValue) {}
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int lineNum = 0;
struct gpiod_line* lineHandle = nullptr;
};
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class GpiodRegularByChip : public GpiodRegularBase {
public:
GpiodRegularByChip()
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_CHIP, std::string(), gpio::Direction::IN,
gpio::LOW, 0) {}
GpiodRegularByChip(std::string chipname_, int lineNum_, std::string consumer_,
gpio::Direction direction_, gpio::Levels initValue_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_CHIP, consumer_, direction_, initValue_,
lineNum_),
chipname(chipname_) {}
GpiodRegularByChip(std::string chipname_, int lineNum_, std::string consumer_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_CHIP, consumer_, gpio::Direction::IN,
gpio::LOW, lineNum_),
chipname(chipname_) {}
std::string chipname;
};
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class GpiodRegularByLabel : public GpiodRegularBase {
public:
GpiodRegularByLabel(std::string label_, int lineNum_, std::string consumer_,
gpio::Direction direction_, gpio::Levels initValue_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_LABEL, consumer_, direction_, initValue_,
lineNum_),
label(label_) {}
GpiodRegularByLabel(std::string label_, int lineNum_, std::string consumer_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_LABEL, consumer_, gpio::Direction::IN,
gpio::LOW, lineNum_),
label(label_) {}
std::string label;
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};
/**
* @brief Passing this GPIO configuration to the GPIO IF object will try to open the GPIO by its
* line name. This line name can be set in the device tree and must be unique. Otherwise
* the driver will open the first line with the given name.
*/
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class GpiodRegularByLineName : public GpiodRegularBase {
public:
GpiodRegularByLineName(std::string lineName_, std::string consumer_, gpio::Direction direction_,
gpio::Levels initValue_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME, consumer_, direction_,
initValue_),
lineName(lineName_) {}
GpiodRegularByLineName(std::string lineName_, std::string consumer_)
: GpiodRegularBase(gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME, consumer_, gpio::Direction::IN,
gpio::LOW),
lineName(lineName_) {}
std::string lineName;
};
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class GpioCallback : public GpioBase {
public:
GpioCallback(std::string consumer, gpio::Direction direction_, gpio::Levels initValue_,
gpio::gpio_cb_t callback, void* callbackArgs)
: GpioBase(gpio::GpioTypes::CALLBACK, consumer, direction_, initValue_),
callback(callback),
callbackArgs(callbackArgs) {}
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gpio::gpio_cb_t callback = nullptr;
void* callbackArgs = nullptr;
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};
using GpioMap = std::map<gpioId_t, GpioBase*>;
using GpioUnorderedMap = std::unordered_map<gpioId_t, GpioBase*>;
using GpioMapIter = GpioMap::iterator;
using GpioUnorderedMapIter = GpioUnorderedMap::iterator;
#endif /* LINUX_GPIO_GPIODEFINITIONS_H_ */