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esp-idf/components/driver/test/test_timer.c

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#include <stdio.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "unity.h"
#include "nvs_flash.h"
#include "driver/timer.h"
#define TIMER_DIVIDER 16
#define TIMER_SCALE (TIMER_BASE_CLK / TIMER_DIVIDER) /*!< used to calculate counter value */
#define TIMER_DELTA 0.001
static bool alarm_flag;
typedef struct {
timer_group_t timer_group;
timer_idx_t timer_idx;
} timer_info_t;
#define TIMER_INFO_INIT(TG, TID) {.timer_group = (TG), .timer_idx = (TID),}
static timer_info_t timer_info[4] = {
TIMER_INFO_INIT(TIMER_GROUP_0, TIMER_0),
TIMER_INFO_INIT(TIMER_GROUP_0, TIMER_1),
TIMER_INFO_INIT(TIMER_GROUP_1, TIMER_0),
TIMER_INFO_INIT(TIMER_GROUP_1, TIMER_1),
};
#define GET_TIMER_INFO(TG, TID) (&timer_info[(TG)*2+(TID)])
// timer group interruption
static void test_timer_group_isr(void *para)
{
timer_info_t* info = (timer_info_t*) para;
const timer_group_t timer_group = info->timer_group;
const timer_idx_t timer_idx = info->timer_idx;
uint64_t timer_val;
double time;
uint64_t alarm_value;
alarm_flag = true;
if (timer_group_get_auto_reload_in_isr(timer_group, timer_idx)) {
timer_group_clr_intr_status_in_isr(timer_group, timer_idx);
ets_printf("This is TG%d timer[%d] reload-timer alarm!\n", timer_group, timer_idx);
timer_get_counter_value(timer_group, timer_idx, &timer_val);
timer_get_counter_time_sec(timer_group, timer_idx, &time);
ets_printf("time: %.8f S\n", time);
} else {
timer_group_clr_intr_status_in_isr(timer_group, timer_idx);
ets_printf("This is TG%d timer[%d] count-up-timer alarm!\n", timer_group, timer_idx);
timer_get_counter_value(timer_group, timer_idx, &timer_val);
timer_get_counter_time_sec(timer_group, timer_idx, &time);
timer_get_alarm_value(timer_group, timer_idx, &alarm_value);
ets_printf("time: %.8f S\n", time);
double alarm_time = (double) alarm_value / TIMER_SCALE;
ets_printf("alarm_time: %.8f S\n", alarm_time);
}
}
// initialize exact timer group
static void tg_timer_init(int timer_group, int timer_idx, double alarm_time)
{
timer_pause(timer_group, timer_idx);
timer_set_counter_value(timer_group, timer_idx, 0x0);
timer_set_alarm_value(timer_group, timer_idx, alarm_time * TIMER_SCALE);
timer_enable_intr(timer_group, timer_idx);
timer_isr_register(timer_group, timer_idx, test_timer_group_isr, GET_TIMER_INFO(timer_group, timer_idx), ESP_INTR_FLAG_LOWMED, NULL);
timer_start(timer_group, timer_idx);
}
// initialize all timer
static void all_timer_init(timer_config_t config, bool flag)
{
esp_err_t ret;
ret = timer_init(TIMER_GROUP_0, TIMER_0, &config);
if (flag) {
TEST_ASSERT(ret == ESP_OK);
} else {
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
ret = timer_init(TIMER_GROUP_0, TIMER_1, &config);
if (flag) {
TEST_ASSERT(ret == ESP_OK);
} else {
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
ret = timer_init(TIMER_GROUP_1, TIMER_0, &config);
if (flag) {
TEST_ASSERT(ret == ESP_OK);
} else {
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
ret = timer_init(TIMER_GROUP_1, TIMER_1, &config);
if (flag) {
TEST_ASSERT(ret == ESP_OK);
} else {
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
}
// start all of timer
static void all_timer_start(void)
{
esp_err_t ret;
ret = timer_start(TIMER_GROUP_0, TIMER_0);
TEST_ASSERT(ret == ESP_OK);
ret = timer_start(TIMER_GROUP_0, TIMER_1);
TEST_ASSERT(ret == ESP_OK);
ret = timer_start(TIMER_GROUP_1, TIMER_0);
TEST_ASSERT(ret == ESP_OK);
ret = timer_start(TIMER_GROUP_1, TIMER_1);
TEST_ASSERT(ret == ESP_OK);
}
static void all_timer_set_counter_value(uint64_t set_timer_val)
{
esp_err_t ret;
ret = timer_set_counter_value(TIMER_GROUP_0, TIMER_0, set_timer_val);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_value(TIMER_GROUP_0, TIMER_1, set_timer_val);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_value(TIMER_GROUP_1, TIMER_0, set_timer_val);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_value(TIMER_GROUP_1, TIMER_1, set_timer_val);
TEST_ASSERT(ret == ESP_OK);
}
static void all_timer_pause(void)
{
esp_err_t ret;
ret = timer_pause(TIMER_GROUP_0, TIMER_0);
TEST_ASSERT(ret == ESP_OK);
ret = timer_pause(TIMER_GROUP_0, TIMER_1);
TEST_ASSERT(ret == ESP_OK);
ret = timer_pause(TIMER_GROUP_1, TIMER_0);
TEST_ASSERT(ret == ESP_OK);
ret = timer_pause(TIMER_GROUP_1, TIMER_1);
TEST_ASSERT(ret == ESP_OK);
}
static void all_timer_get_counter_value(uint64_t set_timer_val, bool flag,
uint64_t *counter_val)
{
esp_err_t ret;
uint64_t time_val;
ret = timer_get_counter_value(TIMER_GROUP_0, TIMER_0, &time_val);
TEST_ASSERT(ret == ESP_OK);
if (flag == true) {
TEST_ASSERT(set_timer_val == time_val);
} else {
TEST_ASSERT(set_timer_val != time_val);
if (counter_val != NULL) {
counter_val[0] = time_val;
}
}
ret = timer_get_counter_value(TIMER_GROUP_0, TIMER_1, &time_val);
TEST_ASSERT(ret == ESP_OK);
if (flag) {
TEST_ASSERT(set_timer_val == time_val);
} else {
TEST_ASSERT(set_timer_val != time_val);
if (counter_val != NULL) {
counter_val[1] = time_val;
}
}
ret = timer_get_counter_value(TIMER_GROUP_1, TIMER_0, &time_val);
TEST_ASSERT(ret == ESP_OK);
if (flag) {
TEST_ASSERT(set_timer_val == time_val);
} else {
TEST_ASSERT(set_timer_val != time_val);
if (counter_val != NULL) {
counter_val[2] = time_val;
}
}
ret = timer_get_counter_value(TIMER_GROUP_1, TIMER_1, &time_val);
TEST_ASSERT(ret == ESP_OK);
if (flag) {
TEST_ASSERT(set_timer_val == time_val);
} else {
TEST_ASSERT(set_timer_val != time_val);
if (counter_val != NULL) {
counter_val[3] = time_val;
}
}
}
static void all_timer_get_counter_time_sec(bool flag, int delay_time)
{
double time;
esp_err_t ret;
ret = timer_get_counter_time_sec(TIMER_GROUP_0, TIMER_0, &time);
TEST_ASSERT(ret == ESP_OK);
if (!flag) {
TEST_ASSERT_FLOAT_WITHIN(TIMER_DELTA, delay_time, time);
}
ret = timer_get_counter_time_sec(TIMER_GROUP_0, TIMER_1, &time);
TEST_ASSERT(ret == ESP_OK);
if (!flag) {
TEST_ASSERT_FLOAT_WITHIN(TIMER_DELTA, delay_time, time);
}
ret = timer_get_counter_time_sec(TIMER_GROUP_1, TIMER_0, &time);
TEST_ASSERT(ret == ESP_OK);
if (!flag) {
TEST_ASSERT_FLOAT_WITHIN(TIMER_DELTA, delay_time, time);
}
ret = timer_get_counter_time_sec(TIMER_GROUP_1, TIMER_1, &time);
TEST_ASSERT(ret == ESP_OK);
if (!flag) {
TEST_ASSERT_FLOAT_WITHIN(TIMER_DELTA, delay_time, time);
}
}
static void all_timer_set_counter_mode(timer_count_dir_t counter_dir)
{
esp_err_t ret;
ret = timer_set_counter_mode(TIMER_GROUP_0, TIMER_0, counter_dir);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_mode(TIMER_GROUP_0, TIMER_1, counter_dir);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_mode(TIMER_GROUP_1, TIMER_0, counter_dir);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_counter_mode(TIMER_GROUP_1, TIMER_1, counter_dir);
TEST_ASSERT(ret == ESP_OK);
}
static void all_timer_set_divider(uint32_t divider)
{
esp_err_t ret;
ret = timer_set_divider(TIMER_GROUP_0, TIMER_0, divider);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_divider(TIMER_GROUP_0, TIMER_1, divider);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_divider(TIMER_GROUP_1, TIMER_0, divider);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_divider(TIMER_GROUP_1, TIMER_1, divider);
TEST_ASSERT(ret == ESP_OK);
}
static void all_timer_set_alarm_value(double alarm_time)
{
esp_err_t ret;
ret = timer_set_alarm_value(TIMER_GROUP_0, TIMER_0,
alarm_time * TIMER_SCALE);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_alarm_value(TIMER_GROUP_0, TIMER_1,
alarm_time * TIMER_SCALE);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_alarm_value(TIMER_GROUP_1, TIMER_0,
alarm_time * TIMER_SCALE);
TEST_ASSERT(ret == ESP_OK);
ret = timer_set_alarm_value(TIMER_GROUP_1, TIMER_1,
alarm_time * TIMER_SCALE);
TEST_ASSERT(ret == ESP_OK);
}
TEST_CASE("Timer init", "[hw_timer]")
{
esp_err_t ret;
// Test init 1:config para
// empty para
timer_config_t config0 = { };
all_timer_init(config0, false);
// only one para
timer_config_t config1 = {
.auto_reload = 1
};
all_timer_init(config1, false);
// lack one para
timer_config_t config2 = {
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
all_timer_init(config2, true);
config2.counter_en = 0;
all_timer_init(config2, true);
// error config para
timer_config_t config3 = {
.alarm_en = 3, //error para
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
all_timer_init(config3, true);
timer_config_t get_config;
timer_get_config(TIMER_GROUP_1, TIMER_1, &get_config);
printf("Error config alarm_en is %d\n", get_config.alarm_en);
TEST_ASSERT(config3.alarm_en != get_config.alarm_en);
// Test init 2: init
uint64_t set_timer_val = 0x0;
timer_config_t config = {
.alarm_en = 0,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
// judge get config parameters
timer_init(TIMER_GROUP_0, TIMER_0, &config);
timer_get_config(TIMER_GROUP_0, TIMER_0, &get_config);
TEST_ASSERT(config.alarm_en == get_config.alarm_en);
TEST_ASSERT(config.auto_reload == get_config.auto_reload);
TEST_ASSERT(config.counter_dir == get_config.counter_dir);
TEST_ASSERT(config.counter_en == get_config.counter_en);
TEST_ASSERT(config.intr_type == get_config.intr_type);
TEST_ASSERT(config.divider == get_config.divider);
all_timer_init(config, true);
all_timer_pause();
all_timer_set_counter_value(set_timer_val);
all_timer_start();
all_timer_get_counter_value(set_timer_val, false, NULL);
// Test init 3: wrong para
ret = timer_init(-1, TIMER_1, &config);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_init(TIMER_GROUP_1, 2, &config);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_init(TIMER_GROUP_1, -1, &config);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_init(2, TIMER_1, &config);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
/**
* read count case:
* 1. start timer compare value
* 2. pause timer compare value
* 3. delay some time */
TEST_CASE("Timer read counter value", "[hw_timer]")
{
timer_config_t config = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
// Test read value 1: start timer get counter value
all_timer_set_counter_value(set_timer_val);
all_timer_start();
all_timer_get_counter_value(set_timer_val, false, NULL);
// Test read value 2: pause timer get counter value
all_timer_pause();
set_timer_val = 0x30405000ULL;
all_timer_set_counter_value(set_timer_val);
all_timer_get_counter_value(set_timer_val, true, NULL);
// Test read value 3:delay 1s get counter value
set_timer_val = 0x0;
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS);
all_timer_get_counter_time_sec(true, 1);
}
/**
* start timer case:
* 1. normal start
* 2. error start para
* */
TEST_CASE("Timer start", "[hw_timer]")
{
esp_err_t ret;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
//Test start 1: normal start
all_timer_start();
all_timer_set_counter_value(set_timer_val);
all_timer_get_counter_value(set_timer_val, false, NULL);
//Test start 2:wrong para
ret = timer_start(2, TIMER_1);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_start(-1, TIMER_1);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_start(TIMER_GROUP_1, 2);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_start(TIMER_GROUP_1, -1);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
/**
* pause timer case:
* 1. normal pause, read value
* 2. error pause error
*/
TEST_CASE("Timer pause", "[hw_timer]")
{
esp_err_t ret;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
//Test pause 1: right para
all_timer_pause();
all_timer_set_counter_value(set_timer_val);
all_timer_get_counter_value(set_timer_val, true, NULL);
//Test pause 2: wrong para
ret = timer_pause(-1, TIMER_0);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_pause(TIMER_GROUP_0, -1);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_pause(2, TIMER_0);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_pause(TIMER_GROUP_1, 2);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
// positive mode and negative mode
TEST_CASE("Timer counter mode (up / down)", "[hw_timer]")
{
esp_err_t ret;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
all_timer_pause();
// Test counter mode 1: TIMER_COUNT_UP
all_timer_set_counter_mode(TIMER_COUNT_UP);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS);
all_timer_get_counter_time_sec(true, 1);
// Test counter mode 2: TIMER_COUNT_DOWN
all_timer_pause();
set_timer_val = 0x00E4E1C0ULL; // 3s clock counter value
all_timer_set_counter_mode(TIMER_COUNT_DOWN);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS);
all_timer_get_counter_time_sec(true, 2);
// Test counter mode 3 : wrong para
ret = timer_set_counter_mode(TIMER_GROUP_0, TIMER_0, -1);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
ret = timer_set_counter_mode(TIMER_GROUP_0, TIMER_0, 2);
TEST_ASSERT(ret == ESP_ERR_INVALID_ARG);
}
/**
* divider case:
* 1. different divider, read value
* Note: divide 0 = divide max, divide 1 = divide 2
* 2. error para
*
* the frequency(timer counts in one sec):
* 80M/divider = 800*100000
* max divider value is 65536, its frequency is 1220 (nearly about 1KHz)
*/
TEST_CASE("Timer divider", "[hw_timer]")
{
int i;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0;
uint64_t time_val[4];
uint64_t comp_time_val[4];
all_timer_init(config, true);
all_timer_pause();
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS);
all_timer_get_counter_value(set_timer_val, false, time_val);
// compare divider 16 and 8, value should be double
all_timer_pause();
all_timer_set_divider(8);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS); //delay the same time
all_timer_get_counter_value(set_timer_val, false, comp_time_val);
for (i = 0; i < 4; i++) {
TEST_ASSERT_INT_WITHIN(5000, 5000000, time_val[i]);
TEST_ASSERT_INT_WITHIN(10000, 10000000, comp_time_val[i]);
}
// divider is 256, value should be 2^4
all_timer_pause();
all_timer_set_divider(256);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS); //delay the same time
all_timer_get_counter_value(set_timer_val, false, comp_time_val);
for (i = 0; i < 4; i++) {
TEST_ASSERT_INT_WITHIN(5000, 5000000, time_val[i]);
TEST_ASSERT_INT_WITHIN(3126, 312500, comp_time_val[i]);
}
// extrem value test
all_timer_pause();
all_timer_set_divider(2);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS);
all_timer_get_counter_value(set_timer_val, false, comp_time_val);
for (i = 0; i < 4; i++) {
TEST_ASSERT_INT_WITHIN(5000, 5000000, time_val[i]);
TEST_ASSERT_INT_WITHIN(40000 , 40000000, comp_time_val[i]);
}
all_timer_pause();
all_timer_set_divider(65536);
all_timer_set_counter_value(set_timer_val);
all_timer_start();
vTaskDelay(1000 / portTICK_PERIOD_MS); //delay the same time
all_timer_get_counter_value(set_timer_val, false, comp_time_val);
for (i = 0; i < 4; i++) {
TEST_ASSERT_INT_WITHIN(5000, 5000000, time_val[i]);
TEST_ASSERT_INT_WITHIN(2 , 1220, comp_time_val[i]);
}
// divider is 1 should be equal with 2
all_timer_pause();
TEST_ASSERT(timer_set_divider(TIMER_GROUP_0, TIMER_0, 1) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_1, TIMER_0, 1) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_0, TIMER_1, 1) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_1, TIMER_1, 1) == ESP_ERR_INVALID_ARG) ;
all_timer_pause();
TEST_ASSERT(timer_set_divider(TIMER_GROUP_0, TIMER_0, 65537) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_1, TIMER_0, 65537) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_0, TIMER_1, 65537) == ESP_ERR_INVALID_ARG) ;
TEST_ASSERT(timer_set_divider(TIMER_GROUP_1, TIMER_1, 65537) == ESP_ERR_INVALID_ARG) ;
}
/**
* enable alarm case:
* 1. enable alarm ,set alarm value and get value
* 2. disable alarm ,set alarm value and get value
*/
TEST_CASE("Timer enable alarm", "[hw_timer]")
{
timer_config_t config_test = {
.alarm_en = 1,
.auto_reload = 1,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
all_timer_init(config_test, true);
// enable alarm
alarm_flag = false;
tg_timer_init(TIMER_GROUP_0, TIMER_1, 1.2);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true);
// disable alarm
alarm_flag = false;
timer_set_alarm(TIMER_GROUP_0, TIMER_1, TIMER_ALARM_DIS);
tg_timer_init(TIMER_GROUP_0, TIMER_1, 1.2);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == false);
// enable alarm
alarm_flag = false;
timer_set_alarm(TIMER_GROUP_1, TIMER_0, TIMER_ALARM_EN);
tg_timer_init(TIMER_GROUP_1, TIMER_0, 1.2);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true);
// disable alarm
alarm_flag = false;
timer_set_alarm(TIMER_GROUP_1, TIMER_0, TIMER_ALARM_DIS);
tg_timer_init(TIMER_GROUP_1, TIMER_0, 1.2);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == false);
}
/**
* alarm value case:
* 1. set alarm value and get value
* 2. interrupt test time
*/
TEST_CASE("Timer set alarm value", "[hw_timer]")
{
esp_err_t ret;
int i;
uint64_t alarm_val[4];
timer_config_t config = {
.alarm_en = 1,
.auto_reload = TIMER_AUTORELOAD_DIS,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 0,
.intr_type = TIMER_INTR_LEVEL
};
all_timer_init(config, true);
// set and get alarm value
all_timer_set_alarm_value(3);
ret = timer_get_alarm_value(TIMER_GROUP_0, TIMER_0, &alarm_val[0]);
TEST_ASSERT(ret == ESP_OK);
ret = timer_get_alarm_value(TIMER_GROUP_0, TIMER_1, &alarm_val[1]);
TEST_ASSERT(ret == ESP_OK);
ret = timer_get_alarm_value(TIMER_GROUP_1, TIMER_0, &alarm_val[2]);
TEST_ASSERT(ret == ESP_OK);
ret = timer_get_alarm_value(TIMER_GROUP_1, TIMER_1, &alarm_val[3]);
TEST_ASSERT(ret == ESP_OK);
for (i = 0; i < 4; i++) {
TEST_ASSERT_EQUAL_UINT32(alarm_val[i] , TIMER_SCALE * 3);
}
// set interrupt read alarm value
tg_timer_init(TIMER_GROUP_0, TIMER_1, 2.4);
tg_timer_init(TIMER_GROUP_1, TIMER_0, 1.4);
vTaskDelay(3000 / portTICK_PERIOD_MS);
}
/**
* auto reload case:
* 1. no reload
* 2. auto reload
*/
TEST_CASE("Timer auto reload", "[hw_timer]")
{
timer_config_t config = {
.alarm_en = 1,
.auto_reload = TIMER_AUTORELOAD_DIS,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 1,
.intr_type = TIMER_INTR_LEVEL
};
all_timer_init(config, true);
// test disable auto_reload
tg_timer_init(TIMER_GROUP_0, TIMER_0, 1.14);
tg_timer_init(TIMER_GROUP_1, TIMER_1, 1.14);
vTaskDelay(2000 / portTICK_PERIOD_MS);
//test enable auto_reload
timer_set_auto_reload(TIMER_GROUP_0, TIMER_1, TIMER_AUTORELOAD_EN);
tg_timer_init(TIMER_GROUP_0, TIMER_1, 1.4);
timer_set_auto_reload(TIMER_GROUP_1, TIMER_0, TIMER_AUTORELOAD_EN);
tg_timer_init(TIMER_GROUP_1, TIMER_0, 1.4);
vTaskDelay(2000 / portTICK_PERIOD_MS);
}
/**
* timer_enable_intr case:
* 1. enable timer_intr
* 2. disable timer_intr
*/
TEST_CASE("Timer enable timer interrupt", "[hw_timer]")
{
alarm_flag = false;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = TIMER_AUTORELOAD_DIS,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = TIMER_PAUSE,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
all_timer_pause();
all_timer_set_counter_value(set_timer_val);
all_timer_set_alarm_value(1.2);
// enable timer_intr0
timer_set_counter_value(TIMER_GROUP_0, TIMER_0, set_timer_val);
timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, 1.2 * TIMER_SCALE);
timer_isr_register(TIMER_GROUP_0, TIMER_0, test_timer_group_isr,
GET_TIMER_INFO(TIMER_GROUP_0, TIMER_0), ESP_INTR_FLAG_LOWMED, NULL);
timer_start(TIMER_GROUP_0, TIMER_0);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true)
// disable timer_intr0
alarm_flag = false;
timer_set_counter_value(TIMER_GROUP_0, TIMER_0, set_timer_val);
timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, 1.2 * TIMER_SCALE);
timer_disable_intr(TIMER_GROUP_0, TIMER_0);
timer_start(TIMER_GROUP_0, TIMER_0);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == false)
// enable timer_intr1
timer_set_counter_value(TIMER_GROUP_1, TIMER_1, set_timer_val);
timer_set_alarm_value(TIMER_GROUP_1, TIMER_1, 1.2 * TIMER_SCALE);
timer_isr_register(TIMER_GROUP_1, TIMER_1, test_timer_group_isr,
GET_TIMER_INFO(TIMER_GROUP_1, TIMER_1), ESP_INTR_FLAG_LOWMED, NULL);
timer_start(TIMER_GROUP_1, TIMER_1);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true)
// disable timer_intr1
alarm_flag = false;
timer_set_counter_value(TIMER_GROUP_1, TIMER_1, set_timer_val);
timer_set_alarm_value(TIMER_GROUP_1, TIMER_1, 1.2 * TIMER_SCALE);
timer_disable_intr(TIMER_GROUP_1, TIMER_1);
timer_start(TIMER_GROUP_1, TIMER_1);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == false);
//enable timer_intr1 again
timer_init(TIMER_GROUP_1, TIMER_1, &config);
timer_set_counter_value(TIMER_GROUP_1, TIMER_1, set_timer_val);
timer_set_alarm_value(TIMER_GROUP_1, TIMER_1, 1.2 * TIMER_SCALE);
timer_enable_intr(TIMER_GROUP_1, TIMER_1);
timer_start(TIMER_GROUP_1, TIMER_1);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true)
}
/**
* enable timer group case:
* 1. enable timer group
* 2. disable timer group
*/
TEST_CASE("Timer enable timer group interrupt", "[hw_timer][ignore]")
{
alarm_flag = false;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = TIMER_AUTORELOAD_DIS,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = 0,
.intr_type = TIMER_INTR_LEVEL
};
uint64_t set_timer_val = 0x0;
all_timer_init(config, true);
all_timer_pause();
all_timer_set_counter_value(set_timer_val);
all_timer_set_alarm_value(1.2);
// enable timer group
timer_group_intr_enable(TIMER_GROUP_0, TIMER_INTR_T0);
timer_isr_register(TIMER_GROUP_0, TIMER_0, test_timer_group_isr, GET_TIMER_INFO(TIMER_GROUP_0, TIMER_0), ESP_INTR_FLAG_LOWMED, NULL);
timer_start(TIMER_GROUP_0, TIMER_0);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true);
//test enable auto_reload
alarm_flag = false;
timer_group_intr_disable(TIMER_GROUP_0, TIMER_INTR_T0);
timer_start(TIMER_GROUP_0, TIMER_0);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == false);
timer_group_intr_enable(TIMER_GROUP_0, TIMER_INTR_T0);
timer_isr_register(TIMER_GROUP_0, TIMER_0, test_timer_group_isr, GET_TIMER_INFO(TIMER_GROUP_0, TIMER_0), ESP_INTR_FLAG_LOWMED, NULL);
timer_start(TIMER_GROUP_0, TIMER_0);
vTaskDelay(2000 / portTICK_PERIOD_MS);
TEST_ASSERT(alarm_flag == true);
}
/**
* isr_register case:
* Cycle register 15 times, compare the heap size to ensure no memory leaks
*/
TEST_CASE("Timer interrupt register", "[hw_timer]")
{
int i;
int heap_size = 0;
timer_config_t config = {
.alarm_en = 1,
.auto_reload = TIMER_AUTORELOAD_DIS,
.counter_dir = TIMER_COUNT_UP,
.divider = TIMER_DIVIDER,
.counter_en = TIMER_PAUSE,
.intr_type = TIMER_INTR_LEVEL
};
for (i = 0; i < 15; i++) {
all_timer_init(config, true);
tg_timer_init(TIMER_GROUP_0, TIMER_0, 0.54);
tg_timer_init(TIMER_GROUP_1, TIMER_1, 0.34);
timer_set_auto_reload(TIMER_GROUP_0, TIMER_1, TIMER_AUTORELOAD_EN);
tg_timer_init(TIMER_GROUP_0, TIMER_1, 0.4);
timer_set_auto_reload(TIMER_GROUP_1, TIMER_0, TIMER_AUTORELOAD_EN);
tg_timer_init(TIMER_GROUP_1, TIMER_0, 0.6);
vTaskDelay(1000 / portTICK_PERIOD_MS);
if (heap_size == 0) {
heap_size = esp_get_free_heap_size();
}
}
TEST_ASSERT_INT_WITHIN(100, heap_size, esp_get_free_heap_size());
}
// The following test cases are used to check if the timer_group fix works.
// Some applications use a software reset, at the reset time, timer_group happens to generate an interrupt.
// but software reset does not clear interrupt status, this is not safe for application when enable the interrupt of timer_group.
// This case will check under this fix, whether the interrupt status is cleared after timer_group initialization.
static void timer_group_test_init(void)
{
static const uint32_t time_ms = 100; // Alarm value 100ms.
static const uint16_t timer_div = TIMER_DIVIDER; // Timer prescaler
static const uint32_t ste_val = time_ms * (TIMER_BASE_CLK / timer_div / 1000);
timer_config_t config = {
.divider = timer_div,
.counter_dir = TIMER_COUNT_UP,
.counter_en = TIMER_PAUSE,
.alarm_en = TIMER_ALARM_EN,
.intr_type = TIMER_INTR_LEVEL,
.auto_reload = true,
};
ESP_ERROR_CHECK(timer_init(TIMER_GROUP_0, TIMER_0, &config));
ESP_ERROR_CHECK(timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0x00000000ULL));
ESP_ERROR_CHECK(timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, ste_val));
//Now the timer is ready.
//We only need to check the interrupt status and don't have to register a interrupt routine.
}
static void timer_group_test_first_stage(void)
{
static uint8_t loop_cnt = 0;
timer_group_test_init();
//Start timer
ESP_ERROR_CHECK(timer_enable_intr(TIMER_GROUP_0, TIMER_0));
ESP_ERROR_CHECK(timer_start(TIMER_GROUP_0, TIMER_0));
//Waiting for timer_group to generate an interrupt
while( !(timer_group_get_intr_status_in_isr(TIMER_GROUP_0) & TIMER_INTR_T0) &&
loop_cnt++ < 100) {
vTaskDelay(200);
}
//TIMERG0.int_raw.t0 == 1 means an interruption has occurred
TEST_ASSERT(timer_group_get_intr_status_in_isr(TIMER_GROUP_0) & TIMER_INTR_T0);
esp_restart();
}
static void timer_group_test_second_stage(void)
{
TEST_ASSERT_EQUAL(ESP_RST_SW, esp_reset_reason());
timer_group_test_init();
TEST_ASSERT_EQUAL(0, timer_group_get_intr_status_in_isr(TIMER_GROUP_0) & TIMER_INTR_T0);
// After enable the interrupt, timer alarm should not trigger immediately
TEST_ESP_OK(timer_enable_intr(TIMER_GROUP_0, TIMER_0));
//After the timer_group is initialized, TIMERG0.int_raw.t0 should be cleared.
TEST_ASSERT_EQUAL(0, timer_group_get_intr_status_in_isr(TIMER_GROUP_0) & TIMER_INTR_T0);
}
TEST_CASE_MULTIPLE_STAGES("timer_group software reset test",
"[intr_status][intr_status = 0]",
timer_group_test_first_stage,
timer_group_test_second_stage);
//
// Timer check reinitialization sequence
//
TEST_CASE("Timer check reinitialization sequence", "[hw_timer]")
{
// 1. step - install driver
timer_group_test_init();
// 2 - register interrupt and start timer
TEST_ESP_OK(timer_enable_intr(TIMER_GROUP_0, TIMER_0));
TEST_ESP_OK(timer_start(TIMER_GROUP_0, TIMER_0));
// Do some work
vTaskDelay(80 / portTICK_PERIOD_MS);
// 3 - deinit timer driver
TEST_ESP_OK(timer_deinit(TIMER_GROUP_0, TIMER_0));
timer_config_t config = {
.divider = TIMER_DIVIDER,
.counter_dir = TIMER_COUNT_UP,
.counter_en = TIMER_START,
.alarm_en = TIMER_ALARM_EN,
.intr_type = TIMER_INTR_LEVEL,
.auto_reload = TIMER_AUTORELOAD_EN,
};
// 4 - reinstall driver
TEST_ESP_OK(timer_init(TIMER_GROUP_0, TIMER_0, &config));
// 5 - enable interrupt
TEST_ESP_OK(timer_enable_intr(TIMER_GROUP_0, TIMER_0));
vTaskDelay(30 / portTICK_PERIOD_MS);
// The pending timer interrupt should not be triggered
TEST_ASSERT_EQUAL(0, timer_group_get_intr_status_in_isr(TIMER_GROUP_0) & TIMER_INTR_T0);
}
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