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HAL_Linux: AnalogIn_IIO add init_pins 

initializes all the available analog
sources and stores the corresponding file descriptors
in fd_analog_sources.
This commit is contained in:
Víctor Mayoral Vilches 2016-01-07 18:52:53 +01:00 committed by Lucas De Marchi
parent 546fbd1f25
commit da1b529415
2 changed files with 17 additions and 0 deletions
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15
libraries/AP_HAL_Linux/AnalogIn_IIO.cpp
View File

@ -33,6 +33,21 @@ IIOAnalogSource::IIOAnalogSource(int16_t pin, float initial_value) :
reopen_pin();
}
void IIOAnalogSource::init_pins(void)
{
char buf[100];
for (int i=0; i < IIO_ANALOG_IN_COUNT; i++) {
// Construct the path by appending strings
strncpy(buf, IIO_ANALOG_IN_DIR, sizeof(buf));
strncat(buf, IIOAnalogSource::analog_sources[i], sizeof(buf));
fd_analog_sources[i] = open(buf, O_RDONLY | O_NONBLOCK);
if (fd_analog_sources[i] == -1) {
::printf("Failed to open analog pin %s\n", buf);
}
}
}
void IIOAnalogSource::reopen_pin(void)
{
char buf[100];

2
libraries/AP_HAL_Linux/AnalogIn_IIO.h
View File

@ -44,8 +44,10 @@ private:
int _pin_fd;
void reopen_pin(void);
void init_pins(void);
static const char *analog_sources[IIO_ANALOG_IN_COUNT];
static int fd_analog_sources[IIO_ANALOG_IN_COUNT];
};
class IIOAnalogIn : public AP_HAL::AnalogIn {