Crash_Override/OVMS3-idf
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

soc/rtc: add tests for CPU frequency switching

Browse source 
These tests switch between PLL and XTAL frequencies for 10 seconds.
This commit is contained in:
Ivan Grokhotkov 2017-10-26 18:47:31 +08:00
parent 6d4ed4ff6c
commit 9317cb3434
1 changed files with 35 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
components/soc/esp32/test/test_rtc_clk.c
View file

@ -1,15 +1,17 @@
#include <stdio.h>
#include "unity.h"
#include "rom/ets_sys.h"
#include "rom/uart.h"
#include "soc/rtc.h"
#include "soc/rtc_cntl_reg.h"
#include "soc/rtc_io_reg.h"
#include "soc/sens_reg.h"
#include "soc/io_mux_reg.h"
#include "driver/rtc_io.h"
#include "test_utils.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#define CALIBRATE_ONE(cali_clk) calibrate_one(cali_clk, #cali_clk)
@ -89,3 +91,35 @@ TEST_CASE("Output 8M XTAL clock to GPIO25", "[rtc_clk][ignore]")
SET_PERI_REG_MASK(RTC_IO_RTC_DEBUG_SEL_REG, RTC_IO_DEBUG_12M_NO_GATING);
pull_out_clk(RTC_IO_DEBUG_SEL0_8M);
}
static void test_clock_switching(void (*switch_func)(rtc_cpu_freq_t))
{
uart_tx_wait_idle(CONFIG_CONSOLE_UART_NUM);
const int test_duration_sec = 10;
ref_clock_init();
uint64_t t_start = ref_clock_get();
rtc_cpu_freq_t cur_freq = rtc_clk_cpu_freq_get();
int count = 0;
while (ref_clock_get() - t_start < test_duration_sec * 1000000) {
switch_func(RTC_CPU_FREQ_XTAL);
switch_func(cur_freq);
++count;
}
uint64_t t_end = ref_clock_get();
printf("Switch count: %d. Average time to switch PLL -> XTAL -> PLL: %d us\n", count, (int) ((t_end - t_start) / count));
ref_clock_deinit();
}
TEST_CASE("Test switching between PLL and XTAL", "[rtc_clk]")
{
test_clock_switching(rtc_clk_cpu_freq_set);
}
TEST_CASE("Test fast switching between PLL and XTAL", "[rtc_clk]")
{
test_clock_switching(rtc_clk_cpu_freq_set_fast);
}