Add support for second SD card on SPI bus for Duet WiFi including
implementation of M21 and M22
New temperature monitoring
Increased PWM resolution
When uploading files to wifi module, skip empty blocks
Revised TMC driver in preparation for standstill current reduction
Fixed PrintMonitor bug when the slicer comment includes a '\' character
Further optimisation of step generation ISR
Don't allow more than half the capacity of the DDA queue to be frozen
Duet WiFi: print additional info from WiFi module
- Fix for uncommanded stepper motor movement on some systems following a
software reset
- When multiple motors are due to step, generate all the step pulses
simultaneously
- Added support for multiple drivers for a single axis (M584)
- Added support for extended step pulse width when using external
drivers (T parameter on M569 command)
- Removed XYZE params from M569 (use M584 instead)
- Added M913 command (set motor % of normal current)
- Added Z probe type 5, which is a normally-closed switch or active-high
probe connected to the Z probe connector
- Duet WiFi default Z probe threshold is now 500
- Duet WiFi defaults to using a low end homing switch on the X axis
Changes to use new pin modes in CoreNG
Initialise TMC2660 step/dir/CS pins as early as possible
Allow emergency stop in simulation mode
Disable drives and heaters when doing a software reset
Support 10th drive and 8th heater on Duet WiFi
TMC2660 driver support is now only in Duet WiFi firmware build
Fixed thermostatic fan bug introduced in version 1.13
Added MCU temperature monitoring
Duet WiFi only: added voltage monitoring, and disable TMC2660 drivers if
the voltage is too low or too high. Not tested as at time of this
checkin,
Temporary fix for RTD temperature spikes causing failed prints
Added 'only if printing a file' condition in M581 command
Fixed M117 for PanelDue
Don't print extruder positions in M114 because they are always zero
Process M0 and M1 when in simulation mode
Allow setting of fan PWM from 50% upwards when a fan is in thermostatic
mode
Reduced default extruder heater PWM frequency
Axes are no longer homes when microstepping is changed
SD card interface speed is included in M122 output
