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Merge pull request #1096 from tannewt/tune_neopixel 

Retune neopixel timings on SAMD51. They were too slow.
This commit is contained in:
Dan Halbert 2018-08-07 21:33:12 -04:00 committed by GitHub
parent 08def6b51e b0dd645e27
commit 2e80f37709
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 4 deletions
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8
ports/atmel-samd/common-hal/neopixel_write/__init__.c
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@ -111,14 +111,14 @@ void common_hal_neopixel_write(const digitalio_digitalinout_obj_t* digitalinout,
#ifdef SAMD51
delay_cycles(3);
#endif
if(p & bitMask) {
if((p & bitMask) != 0) {
// This is the high delay unique to a one bit.
// For the SK6812 its 0.3us
#ifdef SAMD21
asm("nop; nop; nop; nop; nop; nop; nop;");
#endif
#ifdef SAMD51
delay_cycles(11);
delay_cycles(3);
#endif
*clr = pinMask;
} else {
@ -140,7 +140,7 @@ void common_hal_neopixel_write(const digitalio_digitalinout_obj_t* digitalinout,
asm("nop; nop; nop; nop; nop;");
#endif
#ifdef SAMD51
delay_cycles(20);
delay_cycles(4);
#endif
} else {
if(ptr >= end) break;
@ -151,7 +151,7 @@ void common_hal_neopixel_write(const digitalio_digitalinout_obj_t* digitalinout,
// above operations take.
// For the SK6812 its 0.6us +- 0.15us
#ifdef SAMD51
delay_cycles(15);
delay_cycles(3);
#endif
}
}