ardupilot/libraries/AP_IOMCU/iofirmware/ioprotocol.h

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/*
common protocol definitions between AP_IOMCU and iofirmware
*/
#define PKT_MAX_REGS 32
#define IOMCU_MAX_CHANNELS 16
//#define IOMCU_DEBUG
struct PACKED IOPacket {
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uint8_t count:6;
uint8_t code:2;
uint8_t crc;
uint8_t page;
uint8_t offset;
uint16_t regs[PKT_MAX_REGS];
// get packet size in bytes
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uint8_t get_size(void) const
{
return count*2 + 4;
}
};
/*
values for pkt.code
*/
enum iocode {
// read types
CODE_READ = 0,
CODE_WRITE = 1,
// reply codes
CODE_SUCCESS = 0,
CODE_CORRUPT = 1,
CODE_ERROR = 2
};
// IO pages
enum iopage {
PAGE_CONFIG = 0,
PAGE_STATUS = 1,
PAGE_ACTUATORS = 2,
PAGE_SERVOS = 3,
PAGE_RAW_RCIN = 4,
PAGE_RCIN = 5,
PAGE_RAW_ADC = 6,
PAGE_PWM_INFO = 7,
PAGE_SETUP = 50,
PAGE_DIRECT_PWM = 54,
PAGE_FAILSAFE_PWM = 55,
PAGE_SAFETY_PWM = 108,
PAGE_MIXING = 200,
};
// setup page registers
#define PAGE_REG_SETUP_FEATURES 0
#define P_SETUP_FEATURES_SBUS1_OUT 1
#define P_SETUP_FEATURES_SBUS2_OUT 2
#define P_SETUP_FEATURES_PWM_RSSI 4
#define P_SETUP_FEATURES_ADC_RSSI 8
#define P_SETUP_FEATURES_ONESHOT 16
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#define P_SETUP_FEATURES_BRUSHED 32
#define PAGE_REG_SETUP_ARMING 1
#define P_SETUP_ARMING_IO_ARM_OK (1<<0)
#define P_SETUP_ARMING_FMU_ARMED (1<<1)
#define P_SETUP_ARMING_RC_HANDLING_DISABLED (1<<6)
#define P_SETUP_ARMING_SAFETY_DISABLE_ON (1 << 11) // disable use of safety button for safety off->on
#define P_SETUP_ARMING_SAFETY_DISABLE_OFF (1 << 12) // disable use of safety button for safety on->off
#define PAGE_REG_SETUP_PWM_RATE_MASK 2
#define PAGE_REG_SETUP_DEFAULTRATE 3
#define PAGE_REG_SETUP_ALTRATE 4
#define PAGE_REG_SETUP_REBOOT_BL 10
#define PAGE_REG_SETUP_CRC 11
#define PAGE_REG_SETUP_SBUS_RATE 19
#define PAGE_REG_SETUP_IGNORE_SAFETY 20 /* bitmask of surfaces to ignore the safety status */
#define PAGE_REG_SETUP_HEATER_DUTY_CYCLE 21
// config page registers
#define PAGE_CONFIG_PROTOCOL_VERSION 0
#define IOMCU_PROTOCOL_VERSION 10
// magic value for rebooting to bootloader
#define REBOOT_BL_MAGIC 14662
#define PAGE_REG_SETUP_FORCE_SAFETY_OFF 12
#define PAGE_REG_SETUP_FORCE_SAFETY_ON 14
#define FORCE_SAFETY_MAGIC 22027
struct PACKED page_config {
uint16_t protocol_version;
};
struct PACKED page_reg_status {
uint16_t freemem;
uint16_t cpuload;
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// status flags
uint16_t flag_outputs_armed:1;
uint16_t flag_override:1;
uint16_t flag_rc_ok:1;
uint16_t flag_rc_ppm:1;
uint16_t flag_rc_dsm:1;
uint16_t flag_rc_sbus:1;
uint16_t flag_fmu_ok:1;
uint16_t flag_raw_pwm:1;
uint16_t flag_mixer_ok:1;
uint16_t flag_arm_sync:1;
uint16_t flag_init_ok:1;
uint16_t flag_failsafe:1;
uint16_t flag_safety_off:1;
uint16_t flag_fmu_initialised:1;
uint16_t flag_rc_st24:1;
uint16_t flag_rc_sumd_srxl:1;
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uint16_t alarms;
uint16_t vbatt;
uint16_t ibatt;
uint16_t vservo;
uint16_t vrssi;
uint16_t prssi;
};
struct PACKED page_rc_input {
uint16_t count;
uint16_t flags_frame_drop:1;
uint16_t flags_failsafe:1;
uint16_t flags_dsm11:1;
uint16_t flags_mapping_ok:1;
uint16_t flags_rc_ok:1;
uint16_t flags_unused:11;
uint16_t nrssi;
uint16_t data;
uint16_t frame_count;
uint16_t lost_frame_count;
uint16_t pwm[IOMCU_MAX_CHANNELS];
uint16_t last_frame_count;
uint32_t last_input_us;
};
/*
data for mixing on FMU failsafe
*/
struct PACKED page_mixing {
uint16_t servo_min[IOMCU_MAX_CHANNELS];
uint16_t servo_max[IOMCU_MAX_CHANNELS];
uint16_t servo_trim[IOMCU_MAX_CHANNELS];
uint8_t servo_function[IOMCU_MAX_CHANNELS];
uint8_t servo_reversed[IOMCU_MAX_CHANNELS];
// RC input arrays are in AETR order
uint16_t rc_min[4];
uint16_t rc_max[4];
uint16_t rc_trim[4];
uint8_t rc_reversed[IOMCU_MAX_CHANNELS];
uint8_t rc_channel[4];
// gain for elevon and vtail mixing, x1000
uint16_t mixing_gain;
// channel which when high forces mixer
int8_t rc_chan_override;
// is the throttle an angle input?
uint8_t throttle_is_angle;
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// mask of channels which are pure manual in override
uint16_t manual_rc_mask;
// enabled needs to be 1 to enable mixing
uint8_t enabled;
uint8_t pad; // pad to even size
};