espressif/ESP8266_RTOS_SDK
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feat(esp8266): Add API to get microseconds

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This commit is contained in:
dongheng
2019-03-07 16:06:15 +08:00
parent 09e8cc0f95
commit 7fbb68f4ea
7 changed files with 139 additions and 70 deletions
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27
components/esp8266/source/esp_timer.c
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@ -18,6 +18,7 @@
#include "FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/timers.h"
#include "driver/soc.h"
#define ESP_TIMER_HZ CONFIG_FREERTOS_HZ
@ -198,3 +199,29 @@ esp_err_t esp_timer_delete(esp_timer_handle_t timer)
return os_ret == pdPASS ? ESP_OK : ESP_ERR_INVALID_STATE;
}
int64_t esp_timer_get_time()
{
extern esp_tick_t g_cpu_ticks;
extern uint64_t g_os_ticks;
esp_irqflag_t flag;
esp_tick_t diff_ticks, ticks;
uint64_t time;
flag = soc_save_local_irq();
time = g_os_ticks * portTICK_PERIOD_MS * 1000;
ticks = soc_get_ticks();
if (ticks >= g_cpu_ticks) {
diff_ticks = ticks - g_cpu_ticks;
} else {
diff_ticks = ESP_TICKS_MAX - g_cpu_ticks + ticks;
}
time += diff_ticks / (_xt_tick_divisor * configTICK_RATE_HZ / (1000 * 1000));
soc_restore_local_irq(flag);
return (int64_t)time;
}