ardupilot/libraries/AP_HAL_Linux/RCOutput_qflight.h

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#pragma once
#include <AP_HAL/AP_HAL.h>
#include "AP_HAL_Linux.h"
#if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_QFLIGHT
namespace Linux {
class RCOutput_QFLIGHT : public AP_HAL::RCOutput {
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public:
void init();
void set_freq(uint32_t chmask, uint16_t freq_hz);
uint16_t get_freq(uint8_t ch);
void enable_ch(uint8_t ch);
void disable_ch(uint8_t ch);
void write(uint8_t ch, uint16_t period_us);
uint16_t read(uint8_t ch);
void read(uint16_t *period_us, uint8_t len);
void set_device_path(const char *device);
private:
const char *device = nullptr;
const uint32_t baudrate = 115200;
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static const uint8_t channel_count = 4;
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int32_t fd = -1;
uint16_t enable_mask;
uint16_t period[channel_count];
volatile bool need_write;
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void timer_update(void);
void check_rc_in(void);
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uint32_t last_read_check_ms;
struct PACKED rcin_frame {
uint8_t magic;
uint16_t rcin[8];
uint16_t crc;
};
union {
struct rcin_frame rcin;
uint8_t bytes[19];
} rcu;
uint8_t nrcin_bytes;
};
}
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#endif // CONFIG_HAL_BOARD_SUBTYPE