alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-08-10 04:43:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

esp_clk.h: make public, add getters for RTC time, CPU/APB freq

Browse Source
This commit is contained in:
Ivan Grokhotkov
2017-09-22 23:04:16 +08:00
parent f13623d97d
commit 37e9bc715c
5 changed files with 96 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
components/esp32/clk.c
View File

@@ -15,10 +15,12 @@
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/time.h>
#include <sys/param.h>
#include "sdkconfig.h"
#include "esp_attr.h"
#include "esp_log.h"
#include "esp_clk.h"
#include "esp_clk_internal.h"
#include "rom/ets_sys.h"
#include "rom/uart.h"
#include "rom/rtc.h"
@@ -40,14 +42,13 @@
static void select_rtc_slow_clk(rtc_slow_freq_t slow_clk);
// g_ticks_us defined in ROMs for PRO and APP CPU
extern uint32_t g_ticks_per_us_pro;
extern uint32_t g_ticks_per_us_app;
static const char* TAG = "clk";
/*
* This function is not exposed as an API at this point,
* because FreeRTOS doesn't yet support dynamic changing of
* CPU frequency. Also we need to implement hooks for
* components which want to be notified of CPU frequency
* changes.
*/
void esp_clk_init(void)
{
rtc_config_t cfg = RTC_CONFIG_DEFAULT();
@@ -90,10 +91,19 @@ void esp_clk_init(void)
XTHAL_SET_CCOUNT( XTHAL_GET_CCOUNT() * freq_after / freq_before );
}
int IRAM_ATTR esp_clk_cpu_freq(void)
{
return g_ticks_per_us_pro * 1000000;
}
int IRAM_ATTR esp_clk_apb_freq(void)
{
return MIN(g_ticks_per_us_pro, 80) * 1000000;
}
void IRAM_ATTR ets_update_cpu_frequency(uint32_t ticks_per_us)
{
extern uint32_t g_ticks_per_us_pro; // g_ticks_us defined in ROM for PRO CPU
extern uint32_t g_ticks_per_us_app; // same defined for APP CPU
/* Update scale factors used by ets_delay_us */
g_ticks_per_us_pro = ticks_per_us;
g_ticks_per_us_app = ticks_per_us;
}