ManuelW/grbl-LPC-CoreXY
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enabled interrupts and mad buffer flushing atomic

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Simen Svale Skogsrud 2009-01-30 11:26:08 +01:00
parent 5f5bd35ddb
commit 68c13981b3
1 changed files with 5 additions and 0 deletions
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5
stepper.c
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@ -83,6 +83,8 @@ void st_init()
TCCR2B = 1<<CS20; // Full speed, no prescaler TCCR2B = 1<<CS20; // Full speed, no prescaler
TIMSK2 = 0; // All interrupts disabled TIMSK2 = 0; // All interrupts disabled
sei();
// start off with a slow pace // start off with a slow pace
st_set_pace(1000000); st_set_pace(1000000);
st_start(); st_start();
@ -113,7 +115,9 @@ void st_synchronize()
// Cancel all pending steps // Cancel all pending steps
void st_flush() void st_flush()
{ {
cli();
step_buffer_tail = step_buffer_head; step_buffer_tail = step_buffer_head;
sei();
} }
// Start the stepper subsystem // Start the stepper subsystem
@ -155,6 +159,7 @@ void st_set_pace(uint32_t microseconds)
ceiling = (ticks >> 10); ceiling = (ticks >> 10);
prescaler = 4; // prescaler: 1024 prescaler = 4; // prescaler: 1024
} else { } else {
// Okay, that was slower than we actually go. Just set the slowest speed
ceiling = 0xffff; ceiling = 0xffff;
prescaler = 4; prescaler = 4;
} }