mirror of
https://github.com/espressif/esp-idf.git
synced 2025-10-31 15:11:40 +01:00
284 lines
9.6 KiB
C
284 lines
9.6 KiB
C
#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"
|
|
#include "../esp_clk_internal.h"
|
|
#include "esp_clk.h"
|
|
|
|
|
|
|
|
#define CALIBRATE_ONE(cali_clk) calibrate_one(cali_clk, #cali_clk)
|
|
|
|
static uint32_t calibrate_one(rtc_cal_sel_t cal_clk, const char* name)
|
|
{
|
|
const uint32_t cal_count = 1000;
|
|
const float factor = (1 << 19) * 1000.0f;
|
|
uint32_t cali_val;
|
|
printf("%s:\n", name);
|
|
for (int i = 0; i < 5; ++i) {
|
|
printf("calibrate (%d): ", i);
|
|
cali_val = rtc_clk_cal(cal_clk, cal_count);
|
|
printf("%.3f kHz\n", factor / (float) cali_val);
|
|
}
|
|
return cali_val;
|
|
}
|
|
|
|
TEST_CASE("RTC_SLOW_CLK sources calibration", "[rtc_clk]")
|
|
{
|
|
rtc_clk_32k_enable(true);
|
|
rtc_clk_8m_enable(true, true);
|
|
|
|
CALIBRATE_ONE(RTC_CAL_RTC_MUX);
|
|
CALIBRATE_ONE(RTC_CAL_8MD256);
|
|
uint32_t cal_32k = CALIBRATE_ONE(RTC_CAL_32K_XTAL);
|
|
|
|
if (cal_32k == 0) {
|
|
printf("32K XTAL OSC has not started up");
|
|
} else {
|
|
printf("switching to RTC_SLOW_FREQ_32K_XTAL: ");
|
|
rtc_clk_slow_freq_set(RTC_SLOW_FREQ_32K_XTAL);
|
|
printf("done\n");
|
|
|
|
CALIBRATE_ONE(RTC_CAL_RTC_MUX);
|
|
CALIBRATE_ONE(RTC_CAL_8MD256);
|
|
CALIBRATE_ONE(RTC_CAL_32K_XTAL);
|
|
}
|
|
|
|
printf("switching to RTC_SLOW_FREQ_8MD256: ");
|
|
rtc_clk_slow_freq_set(RTC_SLOW_FREQ_8MD256);
|
|
printf("done\n");
|
|
|
|
CALIBRATE_ONE(RTC_CAL_RTC_MUX);
|
|
CALIBRATE_ONE(RTC_CAL_8MD256);
|
|
CALIBRATE_ONE(RTC_CAL_32K_XTAL);
|
|
}
|
|
|
|
/* The following two are not unit tests, but are added here to make it easy to
|
|
* check the frequency of 150k/32k oscillators. The following two "tests" will
|
|
* output either 32k or 150k clock to GPIO25.
|
|
*/
|
|
|
|
static void pull_out_clk(int sel)
|
|
{
|
|
REG_SET_BIT(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_MUX_SEL_M);
|
|
REG_CLR_BIT(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_RDE_M | RTC_IO_PDAC1_RUE_M);
|
|
REG_SET_FIELD(RTC_IO_PAD_DAC1_REG, RTC_IO_PDAC1_FUN_SEL, 1);
|
|
REG_SET_FIELD(SENS_SAR_DAC_CTRL1_REG, SENS_DEBUG_BIT_SEL, 0);
|
|
REG_SET_FIELD(RTC_IO_RTC_DEBUG_SEL_REG, RTC_IO_DEBUG_SEL0, sel);
|
|
}
|
|
|
|
TEST_CASE("Output 150k clock to GPIO25", "[rtc_clk][ignore]")
|
|
{
|
|
pull_out_clk(RTC_IO_DEBUG_SEL0_150K_OSC);
|
|
}
|
|
|
|
TEST_CASE("Output 32k XTAL clock to GPIO25", "[rtc_clk][ignore]")
|
|
{
|
|
rtc_clk_32k_enable(true);
|
|
pull_out_clk(RTC_IO_DEBUG_SEL0_32K_XTAL);
|
|
}
|
|
|
|
TEST_CASE("Output 8M XTAL clock to GPIO25", "[rtc_clk][ignore]")
|
|
{
|
|
rtc_clk_8m_enable(true, true);
|
|
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("Calculate 8M clock frequency", "[rtc_clk]")
|
|
{
|
|
// calibrate 8M/256 clock against XTAL, get 8M/256 clock period
|
|
uint32_t rtc_8md256_period = rtc_clk_cal(RTC_CAL_8MD256, 100);
|
|
uint32_t rtc_fast_freq_hz = 1000000ULL * (1 << RTC_CLK_CAL_FRACT) * 256 / rtc_8md256_period;
|
|
printf("RTC_FAST_CLK=%d Hz\n", rtc_fast_freq_hz);
|
|
TEST_ASSERT_INT32_WITHIN(500000, RTC_FAST_CLK_FREQ_APPROX, rtc_fast_freq_hz);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
#define COUNT_TEST 3
|
|
#define TIMEOUT_TEST_MS (5 + CONFIG_ESP32_RTC_CLK_CAL_CYCLES / 16)
|
|
|
|
void stop_rtc_external_quartz(){
|
|
const uint8_t pin_32 = 32;
|
|
const uint8_t pin_33 = 33;
|
|
const uint8_t mask_32 = (1 << (pin_32 - 32));
|
|
const uint8_t mask_33 = (1 << (pin_33 - 32));
|
|
|
|
rtc_clk_32k_enable(false);
|
|
|
|
gpio_pad_select_gpio(pin_32);
|
|
gpio_pad_select_gpio(pin_33);
|
|
gpio_output_set_high(0, mask_32 | mask_33, mask_32 | mask_33, 0);
|
|
ets_delay_us(500000);
|
|
gpio_output_set_high(0, 0, 0, mask_32 | mask_33); // disable pins
|
|
}
|
|
|
|
static void start_freq(rtc_slow_freq_t required_src_freq, uint32_t start_delay_ms)
|
|
{
|
|
int i = 0, fail = 0;
|
|
uint32_t start_time;
|
|
uint32_t end_time;
|
|
rtc_slow_freq_t selected_src_freq;
|
|
stop_rtc_external_quartz();
|
|
#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
|
|
uint32_t bootstrap_cycles = CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES;
|
|
printf("Test is started. Kconfig settings:\n External 32K crystal is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
|
|
bootstrap_cycles,
|
|
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
|
|
#else
|
|
uint32_t bootstrap_cycles = 5;
|
|
printf("Test is started. Kconfig settings:\n Internal RC is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
|
|
bootstrap_cycles,
|
|
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
|
|
#endif
|
|
if (start_delay_ms == 0 && CONFIG_ESP32_RTC_CLK_CAL_CYCLES < 1500){
|
|
start_delay_ms = 50;
|
|
printf("Recommended increase Number of cycles for RTC_SLOW_CLK calibration to 3000!\n");
|
|
}
|
|
while(i < COUNT_TEST){
|
|
start_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
|
|
i++;
|
|
printf("attempt #%d/%d...", i, COUNT_TEST);
|
|
rtc_clk_32k_bootstrap(bootstrap_cycles);
|
|
ets_delay_us(start_delay_ms * 1000);
|
|
rtc_clk_select_rtc_slow_clk();
|
|
selected_src_freq = rtc_clk_slow_freq_get();
|
|
end_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
|
|
printf(" [time=%d] ", (end_time - start_time) - start_delay_ms);
|
|
if(selected_src_freq != required_src_freq){
|
|
printf("FAIL. Time measurement...");
|
|
fail = 1;
|
|
} else {
|
|
printf("PASS. Time measurement...");
|
|
}
|
|
uint64_t clk_rtc_time;
|
|
uint32_t fail_measure = 0;
|
|
for (int j = 0; j < 3; ++j) {
|
|
clk_rtc_time = esp_clk_rtc_time();
|
|
ets_delay_us(1000000);
|
|
uint64_t delta = esp_clk_rtc_time() - clk_rtc_time;
|
|
if (delta < 900000LL || delta > 1100000){
|
|
printf("FAIL");
|
|
fail = 1;
|
|
fail_measure = 1;
|
|
break;
|
|
}
|
|
}
|
|
if(fail_measure == 0) {
|
|
printf("PASS");
|
|
}
|
|
printf(" [calibration val = %d] \n", esp_clk_slowclk_cal_get());
|
|
stop_rtc_external_quartz();
|
|
ets_delay_us(500000);
|
|
}
|
|
TEST_ASSERT_MESSAGE(fail == 0, "Test failed");
|
|
printf("Test passed successfully\n");
|
|
}
|
|
|
|
#ifdef CONFIG_SPIRAM_SUPPORT
|
|
// PSRAM tests run on ESP-WROVER-KIT boards, which have the 32k XTAL installed.
|
|
// Other tests may run on DevKitC boards, which don't have a 32k XTAL.
|
|
TEST_CASE("Test starting external RTC quartz", "[rtc_clk]")
|
|
{
|
|
int i = 0, fail = 0;
|
|
uint32_t start_time;
|
|
uint32_t end_time;
|
|
stop_rtc_external_quartz();
|
|
#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
|
|
uint32_t bootstrap_cycles = CONFIG_ESP32_RTC_XTAL_BOOTSTRAP_CYCLES;
|
|
printf("Test is started. Kconfig settings:\n External 32K crystal is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
|
|
bootstrap_cycles,
|
|
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
|
|
#else
|
|
uint32_t bootstrap_cycles = 5;
|
|
printf("Test is started. Kconfig settings:\n Internal RC is selected,\n Oscillation cycles = %d,\n Calibration cycles = %d.\n",
|
|
bootstrap_cycles,
|
|
CONFIG_ESP32_RTC_CLK_CAL_CYCLES);
|
|
#endif
|
|
if (CONFIG_ESP32_RTC_CLK_CAL_CYCLES < 1500){
|
|
printf("Recommended increase Number of cycles for RTC_SLOW_CLK calibration to 3000!\n");
|
|
}
|
|
while(i < COUNT_TEST){
|
|
start_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
|
|
i++;
|
|
printf("attempt #%d/%d...", i, COUNT_TEST);
|
|
rtc_clk_32k_bootstrap(bootstrap_cycles);
|
|
rtc_clk_select_rtc_slow_clk();
|
|
end_time = xTaskGetTickCount() * (1000 / configTICK_RATE_HZ);
|
|
printf(" [time=%d] ", end_time - start_time);
|
|
if((end_time - start_time) > TIMEOUT_TEST_MS){
|
|
printf("FAIL\n");
|
|
fail = 1;
|
|
} else {
|
|
printf("PASS\n");
|
|
}
|
|
stop_rtc_external_quartz();
|
|
ets_delay_us(100000);
|
|
}
|
|
TEST_ASSERT_MESSAGE(fail == 0, "Test failed");
|
|
printf("Test passed successfully\n");
|
|
}
|
|
|
|
TEST_CASE("Test starting 'External 32kHz XTAL' on the board with it.", "[rtc_clk]")
|
|
{
|
|
start_freq(RTC_SLOW_FREQ_32K_XTAL, 200);
|
|
start_freq(RTC_SLOW_FREQ_32K_XTAL, 0);
|
|
}
|
|
|
|
#else
|
|
|
|
TEST_CASE("Test starting 'External 32kHz XTAL' on the board without it.", "[rtc_clk][ignore]")
|
|
{
|
|
printf("Tries to start the 'External 32kHz XTAL' on the board without it. "
|
|
"Clock switching to 'Internal 150 kHz RC oscillator'.\n");
|
|
|
|
printf("This test will be successful for boards without an external crystal or non-working crystal. "
|
|
"First, there will be an attempt to start from the external crystal after a failure "
|
|
"will switch to the internal RC circuit. If the switch to the internal RC circuit "
|
|
"was successful then the test succeeded.\n");
|
|
|
|
start_freq(RTC_SLOW_FREQ_RTC, 200);
|
|
start_freq(RTC_SLOW_FREQ_RTC, 0);
|
|
}
|
|
|
|
#endif // CONFIG_SPIRAM_SUPPORT
|