switch_freq.c

#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_pm.h"
#include "esp_clk.h"
#include "esp_timer.h"


void switch_freq(int mhz)
{
    rtc_cpu_freq_t max_freq;
    assert(rtc_clk_cpu_freq_from_mhz(mhz, &max_freq));
    esp_pm_config_esp32_t pm_config = {
    .max_cpu_freq = max_freq,
    .min_cpu_freq = RTC_CPU_FREQ_XTAL
    };
    ESP_ERROR_CHECK( esp_pm_configure(&pm_config) );
    printf("Waiting for frequency to be set to %d MHz...\n", mhz);
    while (esp_clk_cpu_freq() / 1000000 != mhz) {
        vTaskDelay(10);
    }
    printf("Frequency is set to %d MHz\n", mhz);
}

void app_main()
{
    switch_freq(80);
    switch_freq(160);
    switch_freq(80);
    switch_freq(160);
}

In Release V5.0 the header file "esp_clk.h" no longer exists, so 'esp_clk_cpu_freq()' is no longer available.
How can the current clock frequency be retrieved in V5.0 ?

@JanPoppeliers please see the migration guide for v5.0: https://docs.espressif.com/projects/esp-idf/en/v5.0/esp32/migration-guides/release-5.x/system.html#esp-clock. This header is now under "esp_private/esp_clk.h"

Ok, I found it, thanks!

…

On Fri, 17 Feb 2023 at 11:31, Ivan Grokhotkov ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ @JanPoppeliers <https://github.com/JanPoppeliers> please see the migration guide for v5.0: https://docs.espressif.com/projects/esp-idf/en/v5.0/esp32/migration-guides/release-5.x/system.html#esp-clock. This header is now under "esp_private/esp_clk.h" — Reply to this email directly, view it on GitHub <https://gist.github.com/a0c3b05f16d12bdd542e0a8d943036e6#gistcomment-4474168> or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADNRVNRDSA2MECLVQTGNHK3WX5HQRBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFQKSXMYLMOVS2I5DSOVS2I3TBNVS3W5DIOJSWCZC7OBQXE5DJMNUXAYLOORPWCY3UNF3GS5DZVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVA4DQNJVGM4TINFHORZGSZ3HMVZKMY3SMVQXIZI> . You are receiving this email because you were mentioned. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .