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# Px4ioStatus (UORB message)

**TOPICS:** px4io_status

## Fields

| Назва                                                                                     | Тип          | Unit [Frame] | Range/Enum | Опис                                                      |
| ----------------------------------------------------------------------------------------- | ------------ | ---------------------------------------------------------------- | ---------- | --------------------------------------------------------- |
| timestamp                                                                                 | `uint64`     |                                                                  |            | time since system start (microseconds) |
| free_memory_bytes                               | `uint16`     |                                                                  |            |                                                           |
| voltage_v                                                            | `float32`    |                                                                  |            | Servo rail voltage in volts                               |
| rssi_v                                                               | `float32`    |                                                                  |            | RSSI pin voltage in volts                                 |
| status_arm_sync                                 | `bool`       |                                                                  |            |                                                           |
| status_failsafe                                                      | `bool`       |                                                                  |            |                                                           |
| status_fmu_initialized                          | `bool`       |                                                                  |            |                                                           |
| status_fmu_ok                                   | `bool`       |                                                                  |            |                                                           |
| status_init_ok                                  | `bool`       |                                                                  |            |                                                           |
| status_outputs_armed                            | `bool`       |                                                                  |            |                                                           |
| status_raw_pwm                                  | `bool`       |                                                                  |            |                                                           |
| status_rc_ok                                    | `bool`       |                                                                  |            |                                                           |
| status_rc_dsm                                   | `bool`       |                                                                  |            |                                                           |
| status_rc_ppm                                   | `bool`       |                                                                  |            |                                                           |
| status_rc_sbus                                  | `bool`       |                                                                  |            |                                                           |
| status_rc_st24                                  | `bool`       |                                                                  |            |                                                           |
| status_rc_sumd                                  | `bool`       |                                                                  |            |                                                           |
| status_safety_button_event | `bool`       |                                                                  |            | px4io safety button was pressed for longer than 1 second  |
| alarm_pwm_error                                 | `bool`       |                                                                  |            |                                                           |
| alarm_rc_lost                                   | `bool`       |                                                                  |            |                                                           |
| arming_failsafe_custom                          | `bool`       |                                                                  |            |                                                           |
| arming_fmu_armed                                | `bool`       |                                                                  |            |                                                           |
| arming_fmu_prearmed                             | `bool`       |                                                                  |            |                                                           |
| arming_termination                                                   | `bool`       |                                                                  |            |                                                           |
| arming_io_arm_ok           | `bool`       |                                                                  |            |                                                           |
| arming_lockdown                                                      | `bool`       |                                                                  |            |                                                           |
| arming_termination_failsafe                     | `bool`       |                                                                  |            |                                                           |
| pwm                                                                                       | `uint16[8]`  |                                                                  |            |                                                           |
| pwm_disarmed                                                         | `uint16[8]`  |                                                                  |            |                                                           |
| pwm_failsafe                                                         | `uint16[8]`  |                                                                  |            |                                                           |
| pwm_rate_hz                                     | `uint16[8]`  |                                                                  |            |                                                           |
| raw_inputs                                                           | `uint16[18]` |                                                                  |            |                                                           |

## Source Message

[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/Px4ioStatus.msg)

:::details
Click here to see original file

```c
uint64 timestamp		# time since system start (microseconds)

uint16 free_memory_bytes

float32 voltage_v		# Servo rail voltage in volts
float32 rssi_v			# RSSI pin voltage in volts

# PX4IO status flags (PX4IO_P_STATUS_FLAGS)
bool status_arm_sync
bool status_failsafe
bool status_fmu_initialized
bool status_fmu_ok
bool status_init_ok
bool status_outputs_armed
bool status_raw_pwm
bool status_rc_ok
bool status_rc_dsm
bool status_rc_ppm
bool status_rc_sbus
bool status_rc_st24
bool status_rc_sumd
bool status_safety_button_event # px4io safety button was pressed for longer than 1 second

# PX4IO alarms (PX4IO_P_STATUS_ALARMS)
bool alarm_pwm_error
bool alarm_rc_lost

# PX4IO arming (PX4IO_P_SETUP_ARMING)
bool arming_failsafe_custom
bool arming_fmu_armed
bool arming_fmu_prearmed
bool arming_termination
bool arming_io_arm_ok
bool arming_lockdown
bool arming_termination_failsafe

uint16[8] pwm
uint16[8] pwm_disarmed
uint16[8] pwm_failsafe

uint16[8] pwm_rate_hz

uint16[18] raw_inputs
```

:::