Ensure ADC conversion is complete before reading (#11336)
The current Marlin implementation relies on a timer interrupt to start the ADC conversion and read it. However in some circumstances the interrupt can be delayed resulting in insufficient time being available for the ADC conversion. This results in a bad reading and false temperature fluctuations. These changes make sure that the conversion is complete (by checking the ADC hardware via the HAL) before reading a value.
See: https://github.com/MarlinFirmware/Marlin/issues/11323
[2.0.x] Small assorted collection of fixes and improvements (#10911)
* Misc fixes and improvements
- Get rid of most critical sections on the Serial port drivers for AVR and DUE. Proper usage of FIFOs should allow interrupts to stay enabled without harm to queuing and dequeuing.
Also, with 8-bit indices (for AVR) and up to 32-bit indices (for ARM), there is no need to protect reads and writes to those indices.
- Simplify the XON/XOFF logic quite a bit. Much cleaner now (both for AVR and ARM)
- Prevent a race condition (edge case) that could happen when estimating the proper value for the stepper timer (by reading it) and writing the calculated value for the time to the next ISR by disabling interrupts in those critical and small sections of the code - The problem could lead to lost steps.
- Fix dual endstops not properly homing bug (maybe).
* Set position immediately when possible
- Watchdog reset during SD Card initialization.
- Move `DebugMonitor` to `DebugMonitor_Due.cpp`.
- Since the watchdog is enabled on boot do extra resets during init.
- Have `thermalManager` do watchdog reset before its ISR starts to prevent reset.
- Ensure that timers are stopped before reprogramming them to address tone issues.
- Improve SAM3XE reset when reflashed through the native port.
added device & comm drivers for shared SPI LCDs
mistyped some updates in ultralcd_impl_DOGM.h
remove unwanted changes in onfiguration.h
still can't type
Update HAL_LCD_class_defines.h
include USB mass storage & misc
Adding USB MSD implementation to the HAL: Now, when you plug the Native USB port of the Arduino DUE to your PC, it will be detected as a composite USB device: One of the devices is a USB CDC (Serial port over USB) with native USB handshake (no more overflows!!) (set SERIAL_PORT to -1 to use it as main serial port) and also, a MSD (USB Mass Storage Device) will be detected, and the SD card present on the socket will be reflected as a Removable disk on your PC)
Fixes for the Arduino DUE HAL (Serial Port, Graphics Display, EEPROM emulation) (#8651)
* Fixing the DUE serial port assignments: Now -1 means the SAM3x USB Device emulating a serial port, and 0 means the USB to serial adapter included as a programming port
* Improving the Fast IO port access implementation on Arduino DUE
* Implemented EEPROM emulation on Due by storing data on the internal FLASH (with wear leveling)
* Implemented a Software SPI for the ST7920 graphics display for the Arduino RAMPS for DUE, as the default one in u8glib is clocking data too fast on ARM, and the display does not understand it.
* Fixing the case where the serial port selected is the USB device
* Adding configuration for the Makerparts 3D printer (www.makerparts.net)
* Tuned MakerParts acceleration on X and Y axis so it never loses steps. Also adjusted pulses per mm to match default hw configuration
* Fine tuned Maximum acceleration for MakerParts printer
* Style cleanup
* Style cleanup (2)
* Style fixes (3)
* Fixing the DUE serial port assignments: Now -1 means the SAM3x USB Device emulating a serial port, and 0 means the USB to serial adapter included as a programming port
* Improving the Fast IO port access implementation on Arduino DUE
* Implemented EEPROM emulation on Due by storing data on the internal FLASH (with wear leveling)
* Implemented a Software SPI for the ST7920 graphics display for the Arduino RAMPS for DUE, as the default one in u8glib is clocking data too fast on ARM, and the display does not understand it.
* Fixing the case where the serial port selected is the USB device
* Adding configuration for the Makerparts 3D printer (www.makerparts.net)
* Tuned MakerParts acceleration on X and Y axis so it never loses steps. Also adjusted pulses per mm to match default hw configuration
* Fine tuned Maximum acceleration for MakerParts printer
* Style cleanup
* Style changes to u8g_dev_st7920_128_64_sw_spi.cpp
* Even more improvements to the FastIO HAL for DUE. Now WRITE() is 2 ASM instructions, if value is constant, and 5 cycles if value is not constant. Previously, it was 7..8 cycles
* After some problems and debugging, seems we need to align the interrupt vector table to 256 bytes, otherwise, the program sometimes stops working
* Moved comments out of macro, otherwise, token pasting does not properly work sometimes
* Improved Software SPI implementation on DUE: Now it honors the selected speed passed to spiInit(). This allows much faster SDCARD access, improving SDCARD menus and reducing latency
* Update u8g_dev_st7920_128_64_sw_spi.cpp
* Disabling EEPROM over FLASH emulatiion if an I2C or SPI EEPROM is present
Scott Lahteine
Victor Oliveira
Scott Lahteine
Jason Smith
Diego von Deschwanden
ellensp
George Fu
LinFor
Evgeny Zyatkov
Bo Herrmannsen
Eric Ptak
Giuliano Zaro
Eduardo José Tagle
Dave Johnson
Andy Shaw
Chris Pepper
Bob-the-Kuhn
Thomas Moore