100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp32-hal.h"
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#include "sdkconfig.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_attr.h"
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#include "nvs_flash.h"
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#include <sys/time.h>
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void yield()
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{
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vPortYield();
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}
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portMUX_TYPE microsMux = portMUX_INITIALIZER_UNLOCKED;
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uint32_t IRAM_ATTR micros()
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{
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static uint32_t lccount = 0;
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static uint32_t overflow = 0;
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uint32_t ccount;
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portENTER_CRITICAL_ISR(µsMux);
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__asm__ __volatile__ ( "rsr %0, ccount" : "=a" (ccount) );
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if(ccount < lccount){
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overflow += UINT32_MAX / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ;
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}
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lccount = ccount;
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portEXIT_CRITICAL_ISR(µsMux);
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return overflow + (ccount / CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ);
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}
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uint32_t IRAM_ATTR millis()
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{
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return xTaskGetTickCount() * portTICK_PERIOD_MS;
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}
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void delay(uint32_t ms)
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{
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vTaskDelay(ms / portTICK_PERIOD_MS);
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}
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void IRAM_ATTR delayMicroseconds(uint32_t us)
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{
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uint32_t m = micros();
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if(us){
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uint32_t e = (m + us);
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if(m > e){ //overflow
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while(micros() > e){
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NOP();
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}
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}
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while(micros() < e){
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NOP();
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}
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}
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}
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void initVariant() __attribute__((weak));
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void initVariant() {}
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void init() __attribute__((weak));
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void init() {}
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void initArduino()
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{
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nvs_flash_init();
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init();
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initVariant();
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}
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//used by hal log
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const char * IRAM_ATTR pathToFileName(const char * path)
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{
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size_t i = 0;
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size_t pos = 0;
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char * p = (char *)path;
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while(*p){
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i++;
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if(*p == '/' || *p == '\\'){
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pos = i;
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}
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p++;
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}
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return path+pos;
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}
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