Pushed limits active high option. Updated defaults.h. Misc bug fixes. Cleaned up codebase.

- Pushed limit switch active high option (i.e. NC switches).

- Updated defaults.h to be in-line with the new settings.

- Refactored feed hold handling and step segment buffer to be more
generalized in effort to make adding feedrate overrides easier in the
future. Also made it a little more clean.

- Fixed G18 plane select issue. Now ZX-plane, rather than XZ-plane, per
right hand rule.

- Cleaned some of the system settings by more accurately renaming some
of the variables and removing old obsolete ones.

- Declared serial.c rx_buffer_tail to be volatile. No effect, since
avr-gcc automatically does this during compilation. Helps with porting
when using other compilers.

- Updated version number to v0.9b.

- Updates to README.md
This commit is contained in:
Sonny Jeon
2013-12-07 08:40:25 -07:00
parent 2f6663a0b9
commit a87f25773c
22 changed files with 220 additions and 6101 deletions

View File

@ -35,10 +35,17 @@
#define MICROSECONDS_PER_ACCELERATION_TICK (1000000/ACCELERATION_TICKS_PER_SECOND)
void limits_init()
{
LIMIT_DDR &= ~(LIMIT_MASK); // Set as input pins
LIMIT_PORT |= (LIMIT_MASK); // Enable internal pull-up resistors. Normal high operation.
#ifndef LIMIT_SWITCHES_ACTIVE_HIGH
LIMIT_PORT |= (LIMIT_MASK); // Enable internal pull-up resistors. Normal high operation.
#else // LIMIT_SWITCHES_ACTIVE_HIGH
LIMIT_PORT &= ~(LIMIT_MASK); // Normal low operation. Requires external pull-down.
#endif // !LIMIT_SWITCHES_ACTIVE_HIGH
if (bit_istrue(settings.flags,BITFLAG_HARD_LIMIT_ENABLE)) {
LIMIT_PCMSK |= LIMIT_MASK; // Enable specific pins of the Pin Change Interrupt
PCICR |= (1 << LIMIT_INT); // Enable Pin Change Interrupt
@ -48,6 +55,7 @@ void limits_init()
}
}
// This is the Limit Pin Change Interrupt, which handles the hard limit feature. A bouncing
// limit switch can cause a lot of problems, like false readings and multiple interrupt calls.
// If a switch is triggered at all, something bad has happened and treat it as such, regardless
@ -94,7 +102,11 @@ static void homing_cycle(uint8_t cycle_mask, int8_t pos_dir, bool invert_pin, fl
This will also fix the slow max feedrate of the homing 'lite' stepper algorithm.
Need to check if setting the planner steps will require them to be volatile or not. */
#ifdef LIMIT_SWITCHES_ACTIVE_HIGH
// When in an active-high switch configuration, invert_pin needs to be adjusted.
invert_pin = !invert_pin;
#endif
// Determine governing axes with finest step resolution per distance for the Bresenham
// algorithm. This solves the issue when homing multiple axes that have different