---
meta:
id: asuphoenix
endian: be
doc: |
:field dest_callsign: ax25_frame.ax25_header.dest_callsign_raw.callsign_ror.callsign
:field dest_ssid: ax25_frame.ax25_header.dest_ssid_raw.ssid
:field src_callsign: ax25_frame.ax25_header.src_callsign_raw.callsign_ror.callsign
:field src_ssid: ax25_frame.ax25_header.src_ssid_raw.ssid
:field ctl: ax25_frame.ax25_header.ctl
:field pid: ax25_frame.payload.pid
:field priority: ax25_frame.payload.ax25_info.header.priority
:field source: ax25_frame.payload.ax25_info.header.source
:field destination: ax25_frame.payload.ax25_info.header.destination
:field destination_port: ax25_frame.payload.ax25_info.header.destination_port
:field source_port: ax25_frame.payload.ax25_info.header.source_port
:field reserved: ax25_frame.payload.ax25_info.header.reserved
:field hmac: ax25_frame.payload.ax25_info.header.hmac
:field xtea: ax25_frame.payload.ax25_info.header.xtea
:field rdp: ax25_frame.payload.ax25_info.header.rdp
:field crc: ax25_frame.payload.ax25_info.header.crc
:field comms_idx: ax25_frame.payload.ax25_info.healthbeacon_ascii.comms_idx_int
:field total_obc_resets: ax25_frame.payload.ax25_info.healthbeacon_ascii.total_obc_resets
:field current_bat_volt: ax25_frame.payload.ax25_info.healthbeacon_ascii.current_bat_volt_flt
:field obc_disk_space_used_mb: ax25_frame.payload.ax25_info.healthbeacon_ascii.obc_disk_space_used_str
:field obc_clock: ax25_frame.payload.ax25_info.healthbeacon_ascii.obc_clock
:field current_3v3: ax25_frame.payload.ax25_info.healthbeacon_ascii.current_3v3_flt
:field current_5v: ax25_frame.payload.ax25_info.healthbeacon_ascii.current_5v_flt
:field current_adcs: ax25_frame.payload.ax25_info.healthbeacon_ascii.current_adcs_flt
:field eps_charge_volt_bat: ax25_frame.payload.ax25_info.healthbeacon_ascii.eps_charge_volt_bat_flt
:field eps_charge_current_bat: ax25_frame.payload.ax25_info.healthbeacon_ascii.eps_charge_current_bat
:field eps_temp: ax25_frame.payload.ax25_info.healthbeacon_ascii.eps_temp
:field bat_temp: ax25_frame.payload.ax25_info.healthbeacon_ascii.bat_temp
:field brownouts: ax25_frame.payload.ax25_info.healthbeacon_ascii.brownouts
:field ax100_rssi: ax25_frame.payload.ax25_info.healthbeacon_ascii.ax100_rssi
:field ax100_board_temp: ax25_frame.payload.ax25_info.healthbeacon_ascii.ax100_board_temp
:field gps_sats_used: ax25_frame.payload.ax25_info.healthbeacon_ascii.gps_sats_used
:field ants_deployed: ax25_frame.payload.ax25_info.healthbeacon_ascii.ants_deployed
:field gpio_state: ax25_frame.payload.ax25_info.healthbeacon_ascii.gpio_state
Attention: `rpt_callsign` cannot be accessed because `rpt_instance` is an
array of unknown size at the beginning of the parsing process! Left an
example in here.
seq:
- id: ax25_frame
type: ax25_frame
doc-ref: 'https://www.tapr.org/pub_ax25.html'
types:
ax25_frame:
seq:
- id: ax25_header
type: ax25_header
- id: payload
type:
switch-on: ax25_header.ctl & 0x13
cases:
0x03: ui_frame
0x13: ui_frame
0x00: i_frame
0x02: i_frame
0x10: i_frame
0x12: i_frame
ax25_header:
seq:
- id: dest_callsign_raw
type: callsign_raw
- id: dest_ssid_raw
type: ssid_mask
- id: src_callsign_raw
type: callsign_raw
- id: src_ssid_raw
type: ssid_mask
# ASU Phoenix does not follow the AX.25 specs and produces corrupted headers.
# Thus the following unroll mechanism does not work!
# - id: repeater
# type: repeater
# if: (src_ssid_raw.ssid_mask & 0x01) == 0
# doc: 'Repeater flag is set!'
- id: ctl
type: u1
repeater:
seq:
- id: rpt_instance
type: repeaters
repeat: until
repeat-until: ((_.rpt_ssid_raw.ssid_mask & 0x1) == 0x1)
doc: 'Repeat until no repeater flag is set!'
repeaters:
seq:
- id: rpt_callsign_raw
type: callsign_raw
- id: rpt_ssid_raw
type: ssid_mask
callsign_raw:
seq:
- id: callsign_ror
process: ror(0)
size: 6
type: callsign
callsign:
seq:
- id: callsign
type: str
encoding: ASCII
size: 6
ssid_mask:
seq:
- id: ssid_mask
type: u1
instances:
ssid:
value: (ssid_mask & 0x0f) >> 1
i_frame:
seq:
- id: pid
type: u1
- id: ax25_info
type: ax25_info_data
size-eos: true
ui_frame:
seq:
- id: pid
type: u1
- id: ax25_info
type: ax25_info_data
size-eos: true
ax25_info_data:
seq:
- id: header
type: csp_header
- id: healthbeacon_ascii
type: health_beacon_t
csp_header:
seq:
- id: raw_csp_header
type: u4be
instances:
priority:
value: '(raw_csp_header >> 30)'
source:
value: '((raw_csp_header >> 25) & 0x1F)'
destination:
value: '((raw_csp_header >> 20) & 0x1F)'
destination_port:
value: '((raw_csp_header >> 14) & 0x3F)'
source_port:
value: '((raw_csp_header >> 8) & 0x3F)'
reserved:
value: '((raw_csp_header >> 4) & 0x0F)'
hmac:
value: '((raw_csp_header & 0x08) >> 3)'
xtea:
value: '((raw_csp_header & 0x04) >> 2)'
rdp:
value: '((raw_csp_header & 0x02) >> 1)'
crc:
value: '(raw_csp_header & 0x01)'
health_beacon_t:
doc-ref: http://phxcubesat.asu.edu/content/amateur-operations
seq:
- id: beacon_type_magic
contents: [0x68, 0x6b, 0x3a]
doc: |
Health Beacon indication = 'hk:'
- id: int_comms_idx_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Internal Communications Index
- id: total_obc_resets_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Number of total OBC resets
- id: current_bat_volt_int_str
type: str
terminator: 0x2e
encoding: utf-8
doc: |
Current Battery Voltage
- id: current_bat_volt_frac_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current Battery Voltage
- id: obc_disk_space_used_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Amount of disk space currently used on the OBC
- id: obc_clock_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current time of the OBC clock. It is formatted as an RTC (Unix)
timestamp, which is the number of seconds since Jan 01, 1970
Keep in mind that this time is 7 hours ahead of the current time in
AZ. Therefore, this should be taken into account before assessing
clock drift
- id: current_3v3_int_str
type: str
terminator: 0x2e
encoding: utf-8
doc: |
Current draw from everything getting 3.3V (in mA)
(Note: This is the nominal voltage draw when the GPS, OBC, and AX100
are all getting power)
- id: current_3v3_frac_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current draw from everything getting 3.3V (in mA)
(Note: This is the nominal voltage draw when the GPS, OBC, and AX100
are all getting power)
- id: current_5v_int_str
type: str
terminator: 0x2e
encoding: utf-8
doc: |
Current draw from everything getting 5V (in mA)
- id: current_5v_frac_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current draw from everything getting 5V (in mA)
- id: current_adcs_int_str
type: str
terminator: 0x2e
encoding: utf-8
doc: |
Current draw from power switch 7, the switch to the ADCS
- id: current_adcs_frac_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current draw from power switch 7, the switch to the ADCS
- id: eps_charge_volt_bat_int_str
type: str
terminator: 0x2e
encoding: utf-8
doc: |
Voltage the battery is being charged at via the EPS
- id: eps_charge_volt_bat_frac_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Voltage the battery is being charged at via the EPS
- id: eps_charge_current_bat_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Current the battery is being charged with (in mA)
- id: eps_temp_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
EPS temperature (in K)
- id: bat_temp_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Battery temperature (in K)
- id: brownouts_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Number of Brownouts
- id: ax100_rssi_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
AX-100 Received Signal Strength Index (RSSI)
- id: ax100_board_temp_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
AX-100 board temperature
- id: gps_sats_used_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Number of satellites used in the last GPS solution
- id: ants_deployed_str
type: str
terminator: 0x2c
encoding: utf-8
doc: |
Number of deployed antennas. This will return a value if I2C
communication with the antenna is working and deploys the antenna)
- id: gpio_state_str
type: str
size: 1
encoding: utf-8
doc: |
GPIO State (0 = switch is on the ADCS, 1 = switch is on the FLIR camera)
instances:
comms_idx_int:
value: int_comms_idx_str.to_i
total_obc_resets:
value: total_obc_resets_str.to_i
current_bat_volt_flt:
value: current_bat_volt_int_str.to_i + (((current_bat_volt_int_str.to_i < 0).to_i)*(-2)+1) * current_bat_volt_frac_str.to_i / 100.0
obc_clock:
value: obc_clock_str.to_i
current_3v3_flt:
value: current_3v3_int_str.to_i + (((current_3v3_int_str.to_i < 0).to_i)*(-2)+1) * current_3v3_frac_str.to_i / 1000.0
current_5v_flt:
value: current_5v_int_str.to_i + (((current_5v_int_str.to_i < 0).to_i)*(-2)+1) * current_5v_frac_str.to_i / 1000.0
current_adcs_flt:
value: current_adcs_int_str.to_i + (((current_adcs_int_str.to_i < 0).to_i)*(-2)+1) * current_adcs_frac_str.to_i / 1000.0
eps_charge_volt_bat_flt:
value: eps_charge_volt_bat_int_str.to_i + (((eps_charge_volt_bat_int_str.to_i < 0).to_i)*(-2)+1) * eps_charge_volt_bat_frac_str.to_i / 100.0
eps_charge_current_bat:
value: eps_charge_current_bat_str.to_i
eps_temp:
value: eps_temp_str.to_i
bat_temp:
value: bat_temp_str.to_i
brownouts:
value: brownouts_str.to_i
ax100_rssi:
value: ax100_rssi_str.to_i
ax100_board_temp:
value: ax100_board_temp_str.to_i
gps_sats_used:
value: gps_sats_used_str.to_i
ants_deployed:
value: ants_deployed_str.to_i
gpio_state:
value: gpio_state_str.to_i
