eive/fsfw
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fsfw
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meier/gpioOpenByLineName #19

Merged
muellerr merged 4 commits from meier/gpioOpenByLineName into eive/develop 2021-09-27 10:09:13 +02:00
Conversation 0 Commits 4 Files Changed 3 +106 -14
3 changed files with 106 additions and 14 deletions
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28
hal/src/fsfw_hal/common/gpio/gpioDefinitions.h
View File

@ -28,6 +28,7 @@ enum GpioTypes {
NONE,
GPIO_REGULAR_BY_CHIP,
GPIO_REGULAR_BY_LABEL,
GPIO_REGULAR_BY_LINE_NAME,
CALLBACK
};
@ -75,6 +76,12 @@ public:
int initValue, int lineNum): GpioBase(gpioType, consumer, direction, initValue),
lineNum(lineNum) {
}
// 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,
int initValue): GpioBase(gpioType, consumer, direction, initValue) {
}
int lineNum = 0;
struct gpiod_line* lineHandle = nullptr;
};
@ -120,6 +127,27 @@ public:
std::string label;
};
/**
* @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.
*/
class GpiodRegularByLineName: public GpiodRegularBase {
public:
GpiodRegularByLineName(std::string lineName_, std::string consumer_, gpio::Direction direction_,
int 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;
};
class GpioCallback: public GpioBase {
public:
GpioCallback(std::string consumer, gpio::Direction direction_, int initValue_,

79
hal/src/fsfw_hal/linux/gpio/LinuxLibgpioIF.cpp
View File

@ -66,6 +66,14 @@ ReturnValue_t LinuxLibgpioIF::configureGpios(GpioMap& mapToAdd) {
configureGpioByLabel(gpioConfig.first, *regularGpio);
break;
}
case(gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME):{
auto regularGpio = dynamic_cast<GpiodRegularByLineName*>(gpioConfig.second);
if(regularGpio == nullptr) {
return GPIO_INVALID_INSTANCE;
}
configureGpioByLineName(gpioConfig.first, *regularGpio);
break;
}
case(gpio::GpioTypes::CALLBACK): {
auto gpioCallback = dynamic_cast<GpioCallback*>(gpioConfig.second);
if(gpioCallback->callback == nullptr) {
@ -84,13 +92,13 @@ ReturnValue_t LinuxLibgpioIF::configureGpioByLabel(gpioId_t gpioId,
std::string& label = gpioByLabel.label;
struct gpiod_chip* chip = gpiod_chip_open_by_label(label.c_str());
if (chip == nullptr) {
sif::warning << "LinuxLibgpioIF::configureRegularGpio: Failed to open gpio from gpio "
sif::warning << "LinuxLibgpioIF::configureGpioByLabel: Failed to open gpio from gpio "
<< "group with label " << label << ". Gpio ID: " << gpioId << std::endl;
return RETURN_FAILED;
}
std::string failOutput = "label: " + label;
return configureRegularGpio(gpioId, gpioByLabel.gpioType, chip, gpioByLabel, failOutput);
return configureRegularGpio(gpioId, chip, gpioByLabel, failOutput);
}
ReturnValue_t LinuxLibgpioIF::configureGpioByChip(gpioId_t gpioId,
@ -98,16 +106,41 @@ ReturnValue_t LinuxLibgpioIF::configureGpioByChip(gpioId_t gpioId,
std::string& chipname = gpioByChip.chipname;
struct gpiod_chip* chip = gpiod_chip_open_by_name(chipname.c_str());
if (chip == nullptr) {
sif::warning << "LinuxLibgpioIF::configureRegularGpio: Failed to open chip "
sif::warning << "LinuxLibgpioIF::configureGpioByChip: Failed to open chip "
<< chipname << ". Gpio ID: " << gpioId << std::endl;
return RETURN_FAILED;
}
std::string failOutput = "chipname: " + chipname;
return configureRegularGpio(gpioId, gpioByChip.gpioType, chip, gpioByChip, failOutput);
return configureRegularGpio(gpioId, chip, gpioByChip, failOutput);
}
ReturnValue_t LinuxLibgpioIF::configureRegularGpio(gpioId_t gpioId, gpio::GpioTypes gpioType,
struct gpiod_chip* chip, GpiodRegularBase& regularGpio, std::string failOutput) {
ReturnValue_t LinuxLibgpioIF::configureGpioByLineName(gpioId_t gpioId,
GpiodRegularByLineName &gpioByLineName) {
std::string& lineName = gpioByLineName.lineName;
char chipname[MAX_CHIPNAME_LENGTH];
unsigned int lineOffset;
int result = gpiod_ctxless_find_line(lineName.c_str(), chipname, MAX_CHIPNAME_LENGTH,
&lineOffset);
if (result != LINE_FOUND) {
parseFindeLineResult(result, lineName);
return RETURN_FAILED;
}
gpioByLineName.lineNum = static_cast<int>(lineOffset);
struct gpiod_chip* chip = gpiod_chip_open_by_name(chipname);
if (chip == nullptr) {
sif::warning << "LinuxLibgpioIF::configureGpioByLineName: Failed to open chip "
<< chipname << ". <Gpio ID: " << gpioId << std::endl;
return RETURN_FAILED;
}
std::string failOutput = "line name: " + lineName;
return configureRegularGpio(gpioId, chip, gpioByLineName, failOutput);
}
ReturnValue_t LinuxLibgpioIF::configureRegularGpio(gpioId_t gpioId, struct gpiod_chip* chip,
GpiodRegularBase& regularGpio, std::string failOutput) {
unsigned int lineNum;
gpio::Direction direction;
std::string consumer;
@ -173,8 +206,9 @@ ReturnValue_t LinuxLibgpioIF::pullHigh(gpioId_t gpioId) {
}
auto gpioType = gpioMapIter->second->gpioType;
if(gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP or
gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL) {
if (gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME) {
auto regularGpio = dynamic_cast<GpiodRegularBase*>(gpioMapIter->second);
if(regularGpio == nullptr) {
return GPIO_TYPE_FAILURE;
@ -201,8 +235,9 @@ ReturnValue_t LinuxLibgpioIF::pullLow(gpioId_t gpioId) {
}
auto& gpioType = gpioMapIter->second->gpioType;
if(gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP or
gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL) {
if (gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME) {
auto regularGpio = dynamic_cast<GpiodRegularBase*>(gpioMapIter->second);
if(regularGpio == nullptr) {
return GPIO_TYPE_FAILURE;
@ -239,9 +274,11 @@ ReturnValue_t LinuxLibgpioIF::readGpio(gpioId_t gpioId, int* gpioState) {
sif::warning << "LinuxLibgpioIF::readGpio: Unknown GPIOD ID " << gpioId << std::endl;
return UNKNOWN_GPIO_ID;
}
auto gpioType = gpioMapIter->second->gpioType;
if(gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP or
gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL) {
if (gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_CHIP
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LABEL
or gpioType == gpio::GpioTypes::GPIO_REGULAR_BY_LINE_NAME) {
auto regularGpio = dynamic_cast<GpiodRegularBase*>(gpioMapIter->second);
if(regularGpio == nullptr) {
return GPIO_TYPE_FAILURE;
@ -342,3 +379,21 @@ ReturnValue_t LinuxLibgpioIF::checkForConflictsCallbackGpio(gpioId_t gpioIdToChe
}
return HasReturnvaluesIF::RETURN_OK;
}
void LinuxLibgpioIF::parseFindeLineResult(int result, std::string& lineName) {
switch (result) {
case LINE_NOT_EXISTS:
sif::warning << "LinuxLibgpioIF::parseFindeLineResult: Line with name " << lineName
<< " does not exist" << std::endl;
break;
case LINE_ERROR:
sif::warning << "LinuxLibgpioIF::parseFindeLineResult: " << "Line with name "
<< lineName << " does not exist" << std::endl;
break;
default:
sif::warning << "LinuxLibgpioIF::parseFindeLineResult: Unknown return code for line with "
<< "name " << lineName << std::endl;
break;
}
}

13
hal/src/fsfw_hal/linux/gpio/LinuxLibgpioIF.h
View File

@ -38,6 +38,12 @@ public:
ReturnValue_t readGpio(gpioId_t gpioId, int* gpioState) override;
private:
static const size_t MAX_CHIPNAME_LENGTH = 11;
static const int LINE_NOT_EXISTS = 0;
static const int LINE_ERROR = -1;
static const int LINE_FOUND = 1;
/* Holds the information and configuration of all used GPIOs */
GpioUnorderedMap gpioMap;
GpioUnorderedMapIter gpioMapIter;
@ -53,8 +59,10 @@ private:
ReturnValue_t configureGpioByLabel(gpioId_t gpioId, GpiodRegularByLabel& gpioByLabel);
ReturnValue_t configureGpioByChip(gpioId_t gpioId, GpiodRegularByChip& gpioByChip);
ReturnValue_t configureRegularGpio(gpioId_t gpioId, gpio::GpioTypes gpioType,
struct gpiod_chip* chip, GpiodRegularBase& regularGpio, std::string failOutput);
ReturnValue_t configureGpioByLineName(gpioId_t gpioId,
GpiodRegularByLineName &gpioByLineName);
ReturnValue_t configureRegularGpio(gpioId_t gpioId, struct gpiod_chip* chip,
GpiodRegularBase& regularGpio, std::string failOutput);
/**
* @brief This function checks if GPIOs are already registered and whether
@ -77,6 +85,7 @@ private:
*/
ReturnValue_t configureGpios(GpioMap& mapToAdd);
void parseFindeLineResult(int result, std::string& lineName);
};
#endif /* LINUX_GPIO_LINUXLIBGPIOIF_H_ */