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Merge pull request #18252 from gschorcht/cpu/esp32/update_ws281x

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drivers/ws281x: update ESP32 driver to use ESP-IDF CPU HAL
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benpicco 2022-06-25 19:04:23 +02:00 committed by GitHub
commit 32a1c22e76
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1 changed files with 7 additions and 12 deletions
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19
drivers/ws281x/esp32.c
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@ -12,7 +12,7 @@
* @{ * @{
* *
* @file * @file
* @brief Implementation of `ws281x_write_buffer()` for the ESP32 CPU * @brief Implementation of `ws281x_write_buffer()` for the ESP32x CPU
* *
* @author Christian Friedrich Coors <me@ccoors.de> * @author Christian Friedrich Coors <me@ccoors.de>
* *
@ -27,19 +27,14 @@
#include "ws281x_params.h" #include "ws281x_params.h"
#include "ws281x_constants.h" #include "ws281x_constants.h"
#include "periph_cpu.h" #include "periph_cpu.h"
#include "esp_private/esp_clk.h" #include "esp_private/esp_clk.h"
#include "xtensa/core-macros.h" #include "hal/cpu_hal.h"
#include "soc/rtc.h" #include "soc/rtc.h"
#define ENABLE_DEBUG 0 #define ENABLE_DEBUG 0
#include "debug.h" #include "debug.h"
static inline __attribute__((always_inline)) uint32_t get_cycle_count(void) {
uint32_t ccount;
__asm__ __volatile__("rsr %0,ccount":"=a" (ccount));
return ccount;
}
void ws281x_write_buffer(ws281x_t *dev, const void *buf, size_t size) void ws281x_write_buffer(ws281x_t *dev, const void *buf, size_t size)
{ {
assert(dev); assert(dev);
@ -74,14 +69,14 @@ void ws281x_write_buffer(ws281x_t *dev, const void *buf, size_t size)
on_wait = zero_on; on_wait = zero_on;
off_wait = zero_off; off_wait = zero_off;
} }
start = get_cycle_count(); start = cpu_hal_get_cycle_count();
gpio_set(dev->params.pin); gpio_set(dev->params.pin);
current_wait = start + on_wait; current_wait = start + on_wait;
while (get_cycle_count() < current_wait) { } while (cpu_hal_get_cycle_count() < current_wait) { }
gpio_clear(dev->params.pin); gpio_clear(dev->params.pin);
start = get_cycle_count(); start = cpu_hal_get_cycle_count();
current_wait = start + off_wait; current_wait = start + off_wait;
while (get_cycle_count() < current_wait) { } while (cpu_hal_get_cycle_count() < current_wait) { }
data <<= 1; data <<= 1;
} }
pos++; pos++;