Loading diff locks up F411 when dshot_bidir = ON is present in the diff at profile 0

[haslinghuis]

Loading diff locks up F411 when dshot_bidir = ON is present in the diff at profile 0

# diff all defaults

# version
# Betaflight / STM32F411 (S411) 4.5.0 Jun  5 2023 / 11:36:47 (d73092992) MSP API: 1.46
# config rev: c433987

# start the command batch
batch start

# reset configuration to default settings
defaults nosave

# feature
feature -AIRMODE
feature SOFTSERIAL
feature TELEMETRY
feature LED_STRIP
feature OSD

# serial
serial 30 2048 115200 57600 0 115200

# aux
aux 0 0 0 1600 2100 0 0
aux 1 1 1 900 1300 0 0
aux 2 2 1 1325 1700 0 0
aux 3 13 3 1700 2100 0 0
aux 4 35 2 1550 2100 0 0

# vtxtable
vtxtable bands 5
vtxtable channels 8
vtxtable band 1 BOSCAM_A A FACTORY 5865 5845 5825 5805 5785 5765 5745 5725
vtxtable band 2 BOSCAM_B B FACTORY 5733 5752 5771 5790 5809 5828 5847 5866
vtxtable band 3 BOSCAM_E E FACTORY 5705 5685 5665 5645 5885 5905 5925 5945
vtxtable band 4 FATSHARK F FACTORY 5740 5760 5780 5800 5820 5840 5860 5880
vtxtable band 5 RACEBAND R FACTORY 5658 5695 5732 5769 5806 5843 5880 5917
vtxtable powerlevels 4
vtxtable powervalues 0 1 2 3
vtxtable powerlabels 25 100 200 350

# master
set dyn_notch_count = 1
set dyn_notch_q = 500
set acc_calibration = 20,0,56,1
set max_check = 2000
set dshot_idle_value = 400
set dshot_bidir = ON
set motor_poles = 12
set yaw_motors_reversed = ON
set small_angle = 180
set osd_vbat_pos = 2391
set osd_rssi_pos = 2276
set osd_link_quality_pos = 2244
set osd_rssi_dbm_pos = 2212
set osd_tim_2_pos = 2403
set osd_flymode_pos = 2371
set osd_crosshairs_pos = 2253
set osd_current_pos = 2422
set osd_craft_name_pos = 2410
set osd_core_temp_pos = 182
set osd_canvas_height = 13
set vtx_band = 4
set vtx_channel = 4
set vtx_power = 3
set vtx_low_power_disarm = ON
set vtx_freq = 5800

profile 0

# profile 0
set i_pitch = 99
set d_pitch = 35
set f_pitch = 105
set i_roll = 96
set d_roll = 34
set f_roll = 99
set p_yaw = 48
set i_yaw = 99
set f_yaw = 99
set d_min_roll = 0
set d_min_pitch = 0
set tpa_rate = 60

profile 1

profile 2

profile 3

# restore original profile selection
profile 0

rateprofile 0

# rateprofile 0
set rates_type = BETAFLIGHT
set roll_rc_rate = 127
set pitch_rc_rate = 127
set yaw_rc_rate = 100
set roll_expo = 40
set pitch_expo = 40
set roll_srate = 72
set pitch_srate = 72
set yaw_srate = 75

rateprofile 1

rateprofile 2

rateprofile 3

# restore original rateprofile selection
rateprofile 0

# save configuration
save

Scope

Tested with NOX F411, CRAZYBEEF4SX1280 and BETAFPVF4SX1280

Workaround

Moving set dshot_bidir = ON to the end of the diff solves the issue

[haslinghuis]

@ctzsnooze was experiencing this issue - so I tried to narrow it done.

@ledvinap @SteveCEvans any idea why this could happen? Did not check flashing further back then 4.5.0 RC1.

Note moving set dshot_bidir = ON to the end of the diff solves the issue

[ledvinap]

@haslinghuis : Can you test status if pasting manually? Maybe delay before save is important

[haslinghuis]

@ledvinap

• It does not reach save
• After moving dshot_bidir = ON just before save in the diff - operation is successful.
• Status after manually applying lines up to profile 0, then I typed profile 0 and flight controller locks up.

MCU F411 Clock=108MHz (PLLP-HSE), Vref=3.30V, Core temp=61degC
Stack size: 2048, Stack address: 0x2001fff0
Configuration: UNCONFIGURED, size: 3779, max available: 16384
Devices detected: SPI:1, I2C:0
Gyros detected: locked dma
GYRO=ICM42688P, ACC=ICM42688P
OSD: MAX7456 (30 x 13)
BUILD KEY: a53ecdf05462f8a9118ffe647edad54b (4.5.0-dev)
System Uptime: 137 seconds, Current Time: 2024-04-26T14:10:19.037+00:00
CPU:63%, cycle time: 124, GYRO rate: 8064, RX rate: 15, System rate: 9
Voltage: 0 * 0.01V (0S battery - INIT)
I2C Errors: 0
GPS: NOT ENABLED
Arming disable flags: RXLOSS ANGLE LOAD CLI MSP DSHOT_TELEM

# profile 0
profile 0

[ledvinap]

Please try moving dshot_bidir = ON just before save, but entering it manually - create delay before save

[haslinghuis]

save seems not be the issue - as manual applying the diff still hangs firmware at profile 0 - operation is successful when moving dshot_bidir = on to the end before save in the diff - without delay.

[ledvinap]

So no crash when dshot_bidir = on is after profile 0 ? Even when save is delayed?

save reboots the board - maybe the board is rebooted before dshot_bidir = on can crash it. From you reply, it is not obvious if only order is important, not time.

[haslinghuis]

Order is important. Not timing (as we don't reach save)