arduino-esp32/cores/esp32/esp32-hal-misc.c
Me No Dev c827bb4177
CPU and APB Frequency support (#2220)
* Add support to HAL for APB frequencies different than 80MHz

* Add support for CPU frequencies in the IDE board menu

* Switch to fast set_config

* Add method to uart so debug can be reassigned after apb frequency switch

* Return real APB frequency
2018-12-20 01:57:32 +01:00

177 lines
4.6 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 "sdkconfig.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_attr.h"
#include "nvs_flash.h"
#include "nvs.h"
#include "esp_partition.h"
#include "esp_log.h"
#include "esp_timer.h"
#ifdef CONFIG_BT_ENABLED
#include "esp_bt.h"
#endif //CONFIG_BT_ENABLED
#include <sys/time.h>
#include "soc/rtc.h"
#include "soc/rtc_cntl_reg.h"
#include "rom/rtc.h"
#include "esp32-hal.h"
//Undocumented!!! Get chip temperature in Farenheit
//Source: https://github.com/pcbreflux/espressif/blob/master/esp32/arduino/sketchbook/ESP32_int_temp_sensor/ESP32_int_temp_sensor.ino
uint8_t temprature_sens_read();
float temperatureRead()
{
return (temprature_sens_read() - 32) / 1.8;
}
void yield()
{
vPortYield();
}
static uint32_t _cpu_freq_mhz = CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ;
static uint32_t _sys_time_multiplier = 1;
bool setCpuFrequency(uint32_t cpu_freq_mhz){
rtc_cpu_freq_config_t conf, cconf;
rtc_clk_cpu_freq_get_config(&cconf);
if(cconf.freq_mhz == cpu_freq_mhz && _cpu_freq_mhz == cpu_freq_mhz){
return true;
}
if(!rtc_clk_cpu_freq_mhz_to_config(cpu_freq_mhz, &conf)){
log_e("CPU clock could not be set to %u MHz", cpu_freq_mhz);
return false;
}
#if ARDUHAL_LOG_LEVEL >= ARDUHAL_LOG_LEVEL_INFO
log_i("%s: %u / %u = %u Mhz", (conf.source == RTC_CPU_FREQ_SRC_PLL)?"PLL":((conf.source == RTC_CPU_FREQ_SRC_APLL)?"APLL":((conf.source == RTC_CPU_FREQ_SRC_XTAL)?"XTAL":"8M")), conf.source_freq_mhz, conf.div, conf.freq_mhz);
delay(10);
#endif
rtc_clk_cpu_freq_set_config_fast(&conf);
_cpu_freq_mhz = conf.freq_mhz;
_sys_time_multiplier = 80 / getApbFrequency();
return true;
}
uint32_t getCpuFrequency(){
rtc_cpu_freq_config_t conf;
rtc_clk_cpu_freq_get_config(&conf);
return conf.freq_mhz;
}
uint32_t getApbFrequency(){
rtc_cpu_freq_config_t conf;
rtc_clk_cpu_freq_get_config(&conf);
if(conf.freq_mhz >= 80){
return 80000000;
}
return (conf.source_freq_mhz * 1000000) / conf.div;
}
unsigned long IRAM_ATTR micros()
{
return (unsigned long) (esp_timer_get_time()) * _sys_time_multiplier;
}
unsigned long IRAM_ATTR millis()
{
return (unsigned long) (micros() / 1000);
}
void delay(uint32_t ms)
{
vTaskDelay((ms * _cpu_freq_mhz) / (portTICK_PERIOD_MS * 240));
}
void IRAM_ATTR delayMicroseconds(uint32_t us)
{
uint32_t m = micros();
if(us){
uint32_t e = (m + us);
if(m > e){ //overflow
while(micros() > e){
NOP();
}
}
while(micros() < e){
NOP();
}
}
}
void initVariant() __attribute__((weak));
void initVariant() {}
void init() __attribute__((weak));
void init() {}
#ifdef CONFIG_BT_ENABLED
//overwritten in esp32-hal-bt.c
bool btInUse() __attribute__((weak));
bool btInUse(){ return false; }
#endif
void initArduino()
{
#ifdef F_CPU
setCpuFrequency(F_CPU/1000000L);
#endif
#if CONFIG_SPIRAM_SUPPORT
psramInit();
#endif
esp_log_level_set("*", CONFIG_LOG_DEFAULT_LEVEL);
esp_err_t err = nvs_flash_init();
if(err == ESP_ERR_NVS_NO_FREE_PAGES){
const esp_partition_t* partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, NULL);
if (partition != NULL) {
err = esp_partition_erase_range(partition, 0, partition->size);
if(!err){
err = nvs_flash_init();
} else {
log_e("Failed to format the broken NVS partition!");
}
}
}
if(err) {
log_e("Failed to initialize NVS! Error: %u", err);
}
#ifdef CONFIG_BT_ENABLED
if(!btInUse()){
esp_bt_controller_mem_release(ESP_BT_MODE_BTDM);
}
#endif
init();
initVariant();
}
//used by hal log
const char * IRAM_ATTR pathToFileName(const char * path)
{
size_t i = 0;
size_t pos = 0;
char * p = (char *)path;
while(*p){
i++;
if(*p == '/' || *p == '\\'){
pos = i;
}
p++;
}
return path+pos;
}