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Merge pull request #5449 from AnHardt/volatile-bbru

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Make block_buffer_runtime_us volatile
This commit is contained in:
Scott Lahteine 2016-12-09 05:57:45 -08:00 committed by GitHub
commit 72fe995c42
2 changed files with 17 additions and 10 deletions
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6
Marlin/planner.cpp
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@ -146,7 +146,7 @@ float Planner::previous_speed[NUM_AXIS],
#endif
#if ENABLED(ENSURE_SMOOTH_MOVES)
uint32_t Planner::block_buffer_runtime_us = 0;
volatile uint32_t Planner::block_buffer_runtime_us = 0;
#endif
/**
@ -1007,7 +1007,9 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
segment_time = (MIN_BLOCK_TIME) * 1000UL;
}
block->segment_time = segment_time;
block_buffer_runtime_us += segment_time;
CRITICAL_SECTION_START
block_buffer_runtime_us += segment_time;
CRITICAL_SECTION_END
#endif
block->nominal_speed = block->millimeters * inverse_mm_s; // (mm/sec) Always > 0

21
Marlin/planner.h
View file

@ -215,7 +215,7 @@ class Planner {
#endif
#if ENABLED(ENSURE_SMOOTH_MOVES)
static uint32_t block_buffer_runtime_us; //Theoretical block buffer runtime in µs
volatile static uint32_t block_buffer_runtime_us; //Theoretical block buffer runtime in µs
#endif
public:
@ -387,21 +387,26 @@ class Planner {
SBI(block->flag, BLOCK_BIT_BUSY);
return block;
}
else
else {
#if ENABLED(ENSURE_SMOOTH_MOVES)
clear_block_buffer_runtime(); // paranoia. Buffer is empty now - so reset accumulated time to zero.
#endif
return NULL;
}
}
#if ENABLED(ENSURE_SMOOTH_MOVES)
static bool long_move() {
if (block_buffer_runtime_us) {
return block_buffer_runtime_us > (LCD_UPDATE_THRESHOLD) * 1000UL + (MIN_BLOCK_TIME) * 3000UL;
}
else
return true;
CRITICAL_SECTION_START
uint32_t bbru = block_buffer_runtime_us;
CRITICAL_SECTION_END
return !bbru || bbru > (LCD_UPDATE_THRESHOLD) * 1000UL + (MIN_BLOCK_TIME) * 3000UL;
}
static void clear_block_buffer_runtime(){
block_buffer_runtime_us = 0;
CRITICAL_SECTION_START
block_buffer_runtime_us = 0;
CRITICAL_SECTION_END
}
#endif