arduino-esp32/cores/esp32/esp32-hal-misc.c
2016-10-06 07:09:44 -06:00

51 lines
1.3 KiB
C

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp32-hal.h"
#include "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_attr.h"
uint32_t IRAM_ATTR micros()
{
uint32_t ccount;
__asm__ __volatile__ ( "rsr %0, ccount" : "=a" (ccount) );
return ccount / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ;
//return system_get_time();
}
uint32_t IRAM_ATTR millis()
{
return xTaskGetTickCount() * portTICK_PERIOD_MS;
}
void delay(uint32_t ms)
{
vTaskDelay(ms / portTICK_PERIOD_MS);
}
void delayMicroseconds(uint32_t us)
{
if(us) {
unsigned long endat = micros();
endat += us;
while(micros() < endat) {
NOP();
}
}
}