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esp8266/esp_mphal.h: Add mp_hal_ticks_cpu() for reuse.

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This commit is contained in:
Paul Sokolovsky 2016-08-07 16:03:00 +03:00
parent c2070d771a
commit f71f37e426
2 changed files with 10 additions and 10 deletions
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6
esp8266/esp_mphal.h
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@ -47,6 +47,12 @@ void mp_hal_init(void);
void mp_hal_rtc_init(void);
uint32_t mp_hal_ticks_us(void);
__attribute__((always_inline)) static inline uint32_t mp_hal_ticks_cpu(void) {
uint32_t ccount;
__asm__ __volatile__("rsr %0,ccount":"=a" (ccount));
return ccount;
}
void mp_hal_delay_us(uint32_t);
void mp_hal_set_interrupt_char(int c);
uint32_t mp_hal_get_cpu_freq(void);

14
esp8266/espneopixel.c
View File

@ -9,16 +9,10 @@
#include "eagle_soc.h"
#include "user_interface.h"
#include "espneopixel.h"
#include "esp_mphal.h"
#define NEO_KHZ400 (1)
static uint32_t _getCycleCount(void) __attribute__((always_inline));
static inline uint32_t _getCycleCount(void) {
uint32_t ccount;
__asm__ __volatile__("rsr %0,ccount":"=a" (ccount));
return ccount;
}
void /*ICACHE_RAM_ATTR*/ esp_neopixel_write(uint8_t pin, uint8_t *pixels, uint32_t numBytes, bool is800KHz) {
uint8_t *p, *end, pix, mask;
@ -49,10 +43,10 @@ void /*ICACHE_RAM_ATTR*/ esp_neopixel_write(uint8_t pin, uint8_t *pixels, uint32
for(t = time0;; t = time0) {
if(pix & mask) t = time1; // Bit high duration
while(((c = _getCycleCount()) - startTime) < period); // Wait for bit start
while(((c = mp_hal_ticks_cpu()) - startTime) < period); // Wait for bit start
GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, pinMask); // Set high
startTime = c; // Save start time
while(((c = _getCycleCount()) - startTime) < t); // Wait high duration
while(((c = mp_hal_ticks_cpu()) - startTime) < t); // Wait high duration
GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pinMask); // Set low
if(!(mask >>= 1)) { // Next bit/byte
if(p >= end) break;
@ -60,5 +54,5 @@ void /*ICACHE_RAM_ATTR*/ esp_neopixel_write(uint8_t pin, uint8_t *pixels, uint32
mask = 0x80;
}
}
while((_getCycleCount() - startTime) < period); // Wait for last bit
while((mp_hal_ticks_cpu() - startTime) < period); // Wait for last bit
}