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sleep: optimize light sleep wakeup latency

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This commit is contained in:
Ivan Grokhotkov
2018-04-04 15:05:50 +08:00
parent ac623a9756
commit 94250e42a0
4 changed files with 269 additions and 87 deletions
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127
components/esp32/test/test_sleep.c
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@@ -1,10 +1,16 @@
#include "unity.h"
#include <sys/time.h>
#include <sys/param.h>
#include "esp_sleep.h"
#include "esp_clk.h"
#include "driver/rtc_io.h"
#include "soc/gpio_reg.h"
#include "soc/rtc.h"
#include "soc/uart_reg.h"
#include "rom/uart.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "soc/rtc.h" // for wakeup trigger defines
#include "soc/rtc_cntl_reg.h" // for read rtc registers directly (cause)
#include "soc/soc.h" // for direct register read macros
@@ -14,10 +20,6 @@
static struct timeval tv_start, tv_stop;
TEST_CASE("esp_deepsleep works", "[deepsleep][reset=DEEPSLEEP_RESET]")
{
esp_deep_sleep(2000000);
}
static void deep_sleep_task(void *arg)
{
@@ -36,12 +38,19 @@ static void do_deep_sleep_from_app_cpu()
}
}
TEST_CASE("wake up using timer", "[deepsleep][reset=DEEPSLEEP_RESET]")
TEST_CASE("wake up from deep sleep using timer", "[deepsleep][reset=DEEPSLEEP_RESET]")
{
esp_sleep_enable_timer_wakeup(2000000);
esp_deep_sleep_start();
}
TEST_CASE("light sleep followed by deep sleep", "[deepsleep][reset=DEEPSLEEP_RESET]")
{
esp_sleep_enable_timer_wakeup(1000000);
esp_light_sleep_start();
esp_deep_sleep_start();
}
TEST_CASE("wake up from light sleep using timer", "[deepsleep]")
{
esp_sleep_enable_timer_wakeup(2000000);
@@ -54,6 +63,103 @@ TEST_CASE("wake up from light sleep using timer", "[deepsleep]")
TEST_ASSERT_INT32_WITHIN(500, 2000, (int) dt);
}
static void test_light_sleep(void* arg)
{
vTaskDelay(2);
for (int i = 0; i < 1000; ++i) {
printf("%d %d\n", xPortGetCoreID(), i);
fflush(stdout);
esp_light_sleep_start();
}
SemaphoreHandle_t done = (SemaphoreHandle_t) arg;
xSemaphoreGive(done);
vTaskDelete(NULL);
}
TEST_CASE("light sleep stress test", "[deepsleep]")
{
SemaphoreHandle_t done = xSemaphoreCreateCounting(2, 0);
esp_sleep_enable_timer_wakeup(1000);
xTaskCreatePinnedToCore(&test_light_sleep, "ls0", 4096, done, UNITY_FREERTOS_PRIORITY + 1, NULL, 0);
#if portNUM_PROCESSORS == 2
xTaskCreatePinnedToCore(&test_light_sleep, "ls1", 4096, done, UNITY_FREERTOS_PRIORITY + 1, NULL, 1);
#endif
xSemaphoreTake(done, portMAX_DELAY);
#if portNUM_PROCESSORS == 2
xSemaphoreTake(done, portMAX_DELAY);
#endif
vSemaphoreDelete(done);
}
#ifdef CONFIG_ESP32_RTC_CLOCK_SOURCE_EXTERNAL_CRYSTAL
#define MAX_SLEEP_TIME_ERROR_US 200
#else
#define MAX_SLEEP_TIME_ERROR_US 100
#endif
TEST_CASE("light sleep duration is correct", "[deepsleep]")
{
// don't power down XTAL — powering it up takes different time on
// different boards
esp_sleep_pd_config(ESP_PD_DOMAIN_XTAL, ESP_PD_OPTION_ON);
// run one light sleep without checking timing, to warm up the cache
esp_sleep_enable_timer_wakeup(1000);
esp_light_sleep_start();
const int sleep_intervals_ms[] = {
1, 1, 2, 3, 4, 5, 6, 7, 8, 10, 15,
20, 25, 50, 100, 200, 500,
};
const int sleep_intervals_count = sizeof(sleep_intervals_ms)/sizeof(sleep_intervals_ms[0]);
for (int i = 0; i < sleep_intervals_count; ++i) {
uint64_t sleep_time = sleep_intervals_ms[i] * 1000;
esp_sleep_enable_timer_wakeup(sleep_time);
for (int repeat = 0; repeat < 5; ++repeat) {
uint64_t start = esp_clk_rtc_time();
int64_t start_hs = esp_timer_get_time();
esp_light_sleep_start();
int64_t stop_hs = esp_timer_get_time();
uint64_t stop = esp_clk_rtc_time();
int diff_us = (int) (stop - start);
int diff_hs_us = (int) (stop_hs - start_hs);
printf("%lld %d\n", sleep_time, (int) (diff_us - sleep_time));
int32_t threshold = MAX(sleep_time / 100, MAX_SLEEP_TIME_ERROR_US);
TEST_ASSERT_INT32_WITHIN(threshold, sleep_time, diff_us);
TEST_ASSERT_INT32_WITHIN(threshold, sleep_time, diff_hs_us);
fflush(stdout);
}
vTaskDelay(10/portTICK_PERIOD_MS);
}
}
TEST_CASE("light sleep and frequency switching", "[deepsleep]")
{
#ifndef CONFIG_PM_ENABLE
const int uart_clk_freq = REF_CLK_FREQ;
CLEAR_PERI_REG_MASK(UART_CONF0_REG(CONFIG_CONSOLE_UART_NUM), UART_TICK_REF_ALWAYS_ON);
uart_div_modify(CONFIG_CONSOLE_UART_NUM, (uart_clk_freq << 4) / CONFIG_CONSOLE_UART_BAUDRATE);
#endif
esp_sleep_enable_timer_wakeup(1000);
rtc_cpu_freq_t default_freq = rtc_clk_cpu_freq_get();
for (int i = 0; i < 1000; ++i) {
if (i % 2 == 0) {
rtc_clk_cpu_freq_set_fast(RTC_CPU_FREQ_XTAL);
} else {
rtc_clk_cpu_freq_set_fast(default_freq);
}
printf("%d\n", i);
fflush(stdout);
esp_light_sleep_start();
}
}
#ifndef CONFIG_FREERTOS_UNICORE
TEST_CASE("enter deep sleep on APP CPU and wake up using timer", "[deepsleep][reset=DEEPSLEEP_RESET]")
{
@@ -138,7 +244,7 @@ TEST_CASE("disable source trigger behavior", "[deepsleep]")
{
float dt = 0;
printf("Setup timer and ext0 to wakeup imediately from GPIO_13 \n");
printf("Setup timer and ext0 to wake up immediately from GPIO_13 \n");
// Setup ext0 configuration to wake up almost immediately
// The wakeup time is proportional to input capacitance * pullup resistance
@@ -159,7 +265,7 @@ TEST_CASE("disable source trigger behavior", "[deepsleep]")
// Check wakeup from Ext0 using time measurement because wakeup cause is
// not available in light sleep mode
TEST_ASSERT_INT32_WITHIN(299, 300, (int) dt);
TEST_ASSERT_INT32_WITHIN(100, 100, (int) dt);
TEST_ASSERT((get_cause() & RTC_EXT0_TRIG_EN) != 0);
@@ -175,7 +281,7 @@ TEST_CASE("disable source trigger behavior", "[deepsleep]")
TEST_ASSERT_INT32_WITHIN(500, 2000, (int) dt);
// Additionaly check wakeup cause
// Additionally check wakeup cause
TEST_ASSERT((get_cause() & RTC_TIMER_TRIG_EN) != 0);
// Disable timer source.
@@ -195,12 +301,11 @@ TEST_CASE("disable source trigger behavior", "[deepsleep]")
dt = get_time_ms();
printf("Ext0 sleep time = %d \n", (int) dt);
TEST_ASSERT_INT32_WITHIN(199, 200, (int) dt);
TEST_ASSERT_INT32_WITHIN(100, 100, (int) dt);
TEST_ASSERT((get_cause() & RTC_EXT0_TRIG_EN) != 0);
// Check error message when source is already disabled
esp_err_t err_code = esp_sleep_disable_wakeup_source(ESP_SLEEP_WAKEUP_TIMER);
TEST_ASSERT(err_code == ESP_ERR_INVALID_STATE);
printf("Test case completed successfully.");
}