Improve compass calibration dialog: The previous calibration dialog showed some "magic" numbers and a 60 second count down. The new version is trying to guide the user through the calibration process: first rotate pitch, then roll and at last yaw angle. A step to the next angle is taken when enough data per angle is collected (change from red to green). To enable the yaw visualization a simple calibration is done while rotating the axis. The function behind the calibration was not modified => the suggested process can be ignored and the same handling as the with old dialog may be applied. With the new process the dialog may be left early. Anyhow it will still be left after 60 seconds and the fine calibration is performed in the same way as before.

#! openocd -f
# Define the prob used:
source [find interface/stlink-v2.cfg]
set WORKAREASIZE 0x8000
transport select hla_swd

# Reset options
set ENABLE_LOW_POWER 1
set STOP_WATCHDOG 1
reset_config srst_only srst_nogate connect_assert_srst

# Seelct the right chip
set CHIPNAME stm32f411RETx
set CONNECT_UNDER_RESET 1
source [find target/stm32f4x.cfg]

# Allow to continue execution after a connection:
init_reset run

#puts "Flash banks:"
#flash banks

#puts "Reading..."
#flash dump_image CPU2-RTE-dump.hex 0x00000000 0x8000

#puts "Done."
#exit