feedc0de/NeoPixelBus
1
0
Fork 0
forked from Makuna/NeoPixelBus
Code Pull Requests Activity

Account For Loop Instruction Cycles (#287)

Browse Source
This commit is contained in:
Michael Miller
2019-08-30 14:03:02 -07:00
committed by GitHub
parent c71e200dd6
commit a833fb48f0
1 changed files with 7 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/internal/NeoPixelEsp.c
View File

@@ -45,12 +45,13 @@ static inline uint32_t _getCycleCount(void)
return ccount; return ccount;
} }
#define CYCLES_800_T0H (F_CPU / 2500000) // 0.4us #define CYCLES_LOOPTEST (4) // adjustment due to loop exit test instruction cycles
#define CYCLES_800_T1H (F_CPU / 1250000) // 0.8us #define CYCLES_800_T0H (F_CPU / 2500000 - CYCLES_LOOPTEST) // 0.4us
#define CYCLES_800 (F_CPU / 800000) // 1.25us per bit #define CYCLES_800_T1H (F_CPU / 1250000 - CYCLES_LOOPTEST) // 0.8us
#define CYCLES_400_T0H (F_CPU / 2000000) #define CYCLES_800 (F_CPU / 800000 - CYCLES_LOOPTEST) // 1.25us per bit
#define CYCLES_400_T1H (F_CPU / 833333) #define CYCLES_400_T0H (F_CPU / 2000000 - CYCLES_LOOPTEST)
#define CYCLES_400 (F_CPU / 400000) #define CYCLES_400_T1H (F_CPU / 833333 - CYCLES_LOOPTEST)
#define CYCLES_400 (F_CPU / 400000 - CYCLES_LOOPTEST)
void ICACHE_RAM_ATTR bitbang_send_pixels_800(uint8_t* pixels, uint8_t* end, uint8_t pin) void ICACHE_RAM_ATTR bitbang_send_pixels_800(uint8_t* pixels, uint8_t* end, uint8_t pin)
{ {