esp-idf/components/driver/test_apps/mcpwm/main/test_mcpwm_gen.c

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35 KiB
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2022-05-28 05:03:05 -04:00
/*
* SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
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*
* SPDX-License-Identifier: Apache-2.0
*/
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "unity.h"
#include "soc/soc_caps.h"
#include "driver/mcpwm_timer.h"
#include "driver/mcpwm_oper.h"
#include "driver/mcpwm_cmpr.h"
#include "driver/mcpwm_gen.h"
#include "driver/gpio.h"
TEST_CASE("mcpwm_generator_install_uninstall", "[mcpwm]")
{
mcpwm_operator_config_t oper_config = {
.group_id = 0,
};
mcpwm_oper_handle_t oper = NULL;
printf("create a MCPWM operator\r\n");
TEST_ESP_OK(mcpwm_new_operator(&oper_config, &oper));
printf("create MCPWM generators from that operator\r\n");
mcpwm_gen_handle_t gens[SOC_MCPWM_GENERATORS_PER_OPERATOR];
mcpwm_generator_config_t gen_config = {
.gen_gpio_num = 0,
};
for (int i = 0; i < SOC_MCPWM_GENERATORS_PER_OPERATOR; i++) {
TEST_ESP_OK(mcpwm_new_generator(oper, &gen_config, &gens[i]));
}
TEST_ESP_ERR(ESP_ERR_NOT_FOUND, mcpwm_new_generator(oper, &gen_config, &gens[0]));
printf("delete generators and operator\r\n");
// can't delete operator if the generator is till in working
TEST_ESP_ERR(ESP_ERR_INVALID_STATE, mcpwm_del_operator(oper));
for (int i = 0; i < SOC_MCPWM_GENERATORS_PER_OPERATOR; i++) {
TEST_ESP_OK(mcpwm_del_generator(gens[i]));
}
TEST_ESP_OK(mcpwm_del_operator(oper));
}
TEST_CASE("mcpwm_generator_force_level_hold_on", "[mcpwm]")
{
// The operator can even work without the timer
printf("create operator and generator\r\n");
mcpwm_oper_handle_t oper = NULL;
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mcpwm_operator_config_t operator_config = {
.group_id = 0,
};
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
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mcpwm_gen_handle_t generator = NULL;
const int gen_gpio = 0;
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = gen_gpio,
.flags.io_loop_back = true, // loop back for test
};
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator));
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printf("add force level to the generator, hold on");
for (int i = 0; i < 10; i++) {
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 0, true));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 1, true));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_gpio));
}
printf("remove the force level\r\n");
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, -1, true));
printf("delete generator and operator\r\n");
TEST_ESP_OK(mcpwm_del_generator(generator));
TEST_ESP_OK(mcpwm_del_operator(oper));
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}
// mcpwm_generator_set_force_level acts before the dead time module
// so the value output on the generator is a combined result
TEST_CASE("mcpwm_force_level_and_dead_time", "[mcpwm]")
{
printf("create operator and generators\r\n");
mcpwm_oper_handle_t oper = NULL;
mcpwm_operator_config_t operator_config = {
.group_id = 0,
};
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
mcpwm_gen_handle_t gen_a = NULL;
mcpwm_gen_handle_t gen_b = NULL;
const int gen_a_gpio = 0;
const int gen_b_gpio = 2;
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = gen_a_gpio,
.flags.io_loop_back = true, // loop back for test
};
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &gen_a));
generator_config.gen_gpio_num = gen_b_gpio;
generator_config.flags.invert_pwm = true; // Inversion add to the GPIO matrix
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &gen_b));
mcpwm_dead_time_config_t dt_config = {
.posedge_delay_ticks = 5,
};
ESP_ERROR_CHECK(mcpwm_generator_set_dead_time(gen_a, gen_a, &dt_config));
dt_config = (mcpwm_dead_time_config_t) {
.negedge_delay_ticks = 5,
.flags.invert_output = true, // Inversion applied by the dead time module
};
ESP_ERROR_CHECK(mcpwm_generator_set_dead_time(gen_b, gen_b, &dt_config));
printf("add force level to the generator, hold on");
for (int i = 0; i < 10; i++) {
TEST_ESP_OK(mcpwm_generator_set_force_level(gen_b, 0, true));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_b_gpio));
TEST_ESP_OK(mcpwm_generator_set_force_level(gen_b, 1, true));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_b_gpio));
}
printf("delete generator and operator\r\n");
TEST_ESP_OK(mcpwm_del_generator(gen_a));
TEST_ESP_OK(mcpwm_del_generator(gen_b));
TEST_ESP_OK(mcpwm_del_operator(oper));
}
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TEST_CASE("mcpwm_generator_force_level_recovery", "[mcpwm]")
{
printf("create mcpwm timer\r\n");
mcpwm_timer_config_t timer_config = {
.group_id = 0,
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.count_mode = MCPWM_TIMER_COUNT_MODE_UP,
.resolution_hz = 1000000,
.period_ticks = 50000,
};
mcpwm_timer_handle_t timer = NULL;
TEST_ESP_OK(mcpwm_new_timer(&timer_config, &timer));
TEST_ESP_OK(mcpwm_timer_enable(timer));
printf("create operator\r\n");
mcpwm_oper_handle_t oper = NULL;
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mcpwm_operator_config_t operator_config = {
.group_id = 0,
.flags.update_gen_action_on_tez = true,
};
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
TEST_ESP_OK(mcpwm_operator_connect_timer(oper, timer));
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printf("create generator\r\n");
mcpwm_gen_handle_t generator = NULL;
const int gen_gpio = 0;
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = gen_gpio,
.flags.io_loop_back = true, // loop back for test
};
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator));
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printf("add force level to the generator, and recovery by events");
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 0, false));
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 1, false));
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 0, false));
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(generator,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
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// generator should output high level on tez event, the previous force level should disappear
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(200));
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_EMPTY));
vTaskDelay(pdMS_TO_TICKS(100));
TEST_ESP_OK(mcpwm_generator_set_force_level(generator, 1, false));
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(generator,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_LOW)));
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// generator should output low level on tez event, the previous force level should disappear
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(200));
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_gpio));
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_EMPTY));
vTaskDelay(pdMS_TO_TICKS(100));
printf("delete generator, operator and timer\r\n");
TEST_ESP_OK(mcpwm_timer_disable(timer));
TEST_ESP_OK(mcpwm_del_generator(generator));
TEST_ESP_OK(mcpwm_del_operator(oper));
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TEST_ESP_OK(mcpwm_del_timer(timer));
}
TEST_CASE("mcpwm_generator_action_on_timer_event", "[mcpwm]")
{
const int generator_gpio = 0;
printf("create timer and operator\r\n");
mcpwm_timer_config_t timer_config = {
.group_id = 0,
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.resolution_hz = 1000000,
.count_mode = MCPWM_TIMER_COUNT_MODE_UP,
.period_ticks = 1000,
};
mcpwm_timer_handle_t timer = NULL;
TEST_ESP_OK(mcpwm_new_timer(&timer_config, &timer));
TEST_ESP_OK(mcpwm_timer_enable(timer));
mcpwm_operator_config_t oper_config = {
.group_id = 0,
};
mcpwm_oper_handle_t oper = NULL;
TEST_ESP_OK(mcpwm_new_operator(&oper_config, &oper));
printf("connect timer and operator\r\n");
TEST_ESP_OK(mcpwm_operator_connect_timer(oper, timer));
printf("create generator\r\n");
mcpwm_generator_config_t gen_config = {
.gen_gpio_num = generator_gpio,
.flags.io_loop_back = 1, // so that we can read the GPIO value by GPIO driver
};
mcpwm_gen_handle_t gen = NULL;
TEST_ESP_OK(mcpwm_new_generator(oper, &gen_config, &gen));
printf("set generator to output high on timer full\r\n");
TEST_ESP_OK(mcpwm_generator_set_actions_on_timer_event(gen,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_FULL, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_KEEP),
MCPWM_GEN_TIMER_EVENT_ACTION_END()));
printf("start timer\r\n");
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(100));
printf("stop timer on full\r\n");
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_FULL));
TEST_ASSERT_EQUAL(1, gpio_get_level(generator_gpio));
printf("set generator to output low on timer full\r\n");
TEST_ESP_OK(mcpwm_generator_set_actions_on_timer_event(gen,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_FULL, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_KEEP),
MCPWM_GEN_TIMER_EVENT_ACTION_END()));
printf("start timer\r\n");
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(100));
printf("stop timer on full\r\n");
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_FULL));
TEST_ASSERT_EQUAL(0, gpio_get_level(generator_gpio));
printf("delete timer, operator, generator\r\n");
TEST_ESP_OK(mcpwm_timer_disable(timer));
TEST_ESP_OK(mcpwm_del_generator(gen));
TEST_ESP_OK(mcpwm_del_operator(oper));
TEST_ESP_OK(mcpwm_del_timer(timer));
}
typedef void (*set_gen_actions_cb_t)(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb);
static void mcpwm_gen_action_test_template(uint32_t timer_resolution, uint32_t period, mcpwm_timer_count_mode_t count_mode,
uint32_t cmpa, uint32_t cmpb, int gpioa, int gpiob, set_gen_actions_cb_t set_generator_actions)
{
mcpwm_timer_config_t timer_config = {
.group_id = 0,
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.count_mode = count_mode,
.resolution_hz = timer_resolution,
.period_ticks = period,
};
mcpwm_timer_handle_t timer = NULL;
TEST_ESP_OK(mcpwm_new_timer(&timer_config, &timer));
mcpwm_operator_config_t operator_config = {
.group_id = 0,
};
mcpwm_oper_handle_t oper = NULL;
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
TEST_ESP_OK(mcpwm_operator_connect_timer(oper, timer));
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TEST_ESP_OK(mcpwm_timer_enable(timer));
mcpwm_cmpr_handle_t comparator_a = NULL;
mcpwm_cmpr_handle_t comparator_b = NULL;
mcpwm_comparator_config_t comparator_config = {
.flags.update_cmp_on_tez = true,
};
TEST_ESP_OK(mcpwm_new_comparator(oper, &comparator_config, &comparator_a));
TEST_ESP_OK(mcpwm_new_comparator(oper, &comparator_config, &comparator_b));
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TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator_a, cmpa));
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator_b, cmpb));
mcpwm_gen_handle_t generator_a = NULL;
mcpwm_gen_handle_t generator_b = NULL;
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = gpioa,
};
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator_a));
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generator_config.gen_gpio_num = gpiob;
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator_b));
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set_generator_actions(generator_a, generator_b, comparator_a, comparator_b);
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(100));
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_EMPTY));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ESP_OK(mcpwm_timer_disable(timer));
TEST_ESP_OK(mcpwm_del_generator(generator_a));
TEST_ESP_OK(mcpwm_del_generator(generator_b));
TEST_ESP_OK(mcpwm_del_comparator(comparator_a));
TEST_ESP_OK(mcpwm_del_comparator(comparator_b));
TEST_ESP_OK(mcpwm_del_operator(oper));
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TEST_ESP_OK(mcpwm_del_timer(timer));
}
static void single_edge_active_high(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW)));
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}
static void single_edge_active_low(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_FULL, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_FULL, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_HIGH)));
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}
static void pulse_placement(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
TEST_ESP_OK(mcpwm_generator_set_actions_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_TOGGLE),
MCPWM_GEN_TIMER_EVENT_ACTION_END()));
}
static void dual_edge_active_low_asym(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, cmpb, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
TEST_ESP_OK(mcpwm_generator_set_actions_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, MCPWM_TIMER_EVENT_FULL, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_TIMER_EVENT_ACTION_END()));
}
static void dual_edge_active_low_sym(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, cmpa, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, cmpb, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
}
static void dual_edge_complementary(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, cmpa, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
TEST_ESP_OK(mcpwm_generator_set_actions_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW),
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_DOWN, cmpb, MCPWM_GEN_ACTION_HIGH),
MCPWM_GEN_COMPARE_EVENT_ACTION_END()));
}
TEST_CASE("mcpwm_generator_action_on_compare_event", "[mcpwm]")
{
printf("[Asymmetric, SingleEdge, ActiveHigh]\r\n");
// PWMA: high = [1->350], low = [351->499,0]
// PWMB: high = [1->200], low = [201->499,0]
mcpwm_gen_action_test_template(1000000, 500, MCPWM_TIMER_COUNT_MODE_UP, 350, 200, 0, 2, single_edge_active_high);
printf("[Asymmetric, SingleEdge, ActiveLow]\r\n");
// PWMA: low = [0->300], high = [301->499]
// PWMB: low = [0->150], high = [151->499]
mcpwm_gen_action_test_template(1000000, 500, MCPWM_TIMER_COUNT_MODE_UP, 300, 150, 0, 2, single_edge_active_low);
printf("[Asymmetric, PulsePlacement]\r\n");
// PWMA: low = [0->200], high = [201->400], low = [401->599]
// PWMB: high = [0->599], low = [0->599]
mcpwm_gen_action_test_template(1000000, 600, MCPWM_TIMER_COUNT_MODE_UP, 200, 400, 0, 2, pulse_placement);
printf("[Asymmetric, DualEdge, ActiveLow]\r\n");
// PWMA: low = [0->250], high = [251->599, 600->450], low = [451->1]
// PWMB: low = [0->599], low = [600->1]
mcpwm_gen_action_test_template(1000000, 1200, MCPWM_TIMER_COUNT_MODE_UP_DOWN, 250, 450, 0, 2, dual_edge_active_low_asym);
printf("[Symmetric, DualEdge, ActiveLow]\r\n");
// PWMA: low = [0->400], high = [401->599, 600->400], low = [399->1]
// PWMB: low = [0->500], high = [501->599, 600->500], low = [499->1]
mcpwm_gen_action_test_template(1000000, 1200, MCPWM_TIMER_COUNT_MODE_UP_DOWN, 400, 500, 0, 2, dual_edge_active_low_sym);
printf("[Symmetric, DualEdge, Complementary]\r\n");
// PWMA: low = [0->350], high = [351->599, 600->350], low = [349->1]
// PWMB: low = [0->400], high = [401->599, 600->400], low = [399->1]
mcpwm_gen_action_test_template(1000000, 1200, MCPWM_TIMER_COUNT_MODE_UP_DOWN, 350, 400, 0, 2, dual_edge_complementary);
}
typedef void (*set_dead_time_cb_t)(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb);
static void mcpwm_deadtime_test_template(uint32_t timer_resolution, uint32_t period, uint32_t cmpa, uint32_t cmpb, int gpioa, int gpiob,
set_gen_actions_cb_t set_generator_actions, set_dead_time_cb_t set_dead_time)
{
mcpwm_timer_config_t timer_config = {
.group_id = 0,
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.resolution_hz = timer_resolution,
.period_ticks = period,
.count_mode = MCPWM_TIMER_COUNT_MODE_UP,
};
mcpwm_timer_handle_t timer = NULL;
TEST_ESP_OK(mcpwm_new_timer(&timer_config, &timer));
mcpwm_operator_config_t operator_config = {
.group_id = 0,
};
mcpwm_oper_handle_t oper = NULL;
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
TEST_ESP_OK(mcpwm_operator_connect_timer(oper, timer));
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TEST_ESP_OK(mcpwm_timer_enable(timer));
mcpwm_cmpr_handle_t comparator_a = NULL;
mcpwm_cmpr_handle_t comparator_b = NULL;
mcpwm_comparator_config_t comparator_config = {
.flags.update_cmp_on_tez = true,
};
TEST_ESP_OK(mcpwm_new_comparator(oper, &comparator_config, &comparator_a));
TEST_ESP_OK(mcpwm_new_comparator(oper, &comparator_config, &comparator_b));
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TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator_a, cmpa));
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator_b, cmpb));
mcpwm_gen_handle_t generator_a = NULL;
mcpwm_gen_handle_t generator_b = NULL;
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = gpioa,
};
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator_a));
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generator_config.gen_gpio_num = gpiob;
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator_b));
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set_generator_actions(generator_a, generator_b, comparator_a, comparator_b);
set_dead_time(generator_a, generator_b);
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
vTaskDelay(pdMS_TO_TICKS(100));
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_EMPTY));
vTaskDelay(pdMS_TO_TICKS(10));
TEST_ESP_OK(mcpwm_timer_disable(timer));
TEST_ESP_OK(mcpwm_del_generator(generator_a));
TEST_ESP_OK(mcpwm_del_generator(generator_b));
TEST_ESP_OK(mcpwm_del_comparator(comparator_a));
TEST_ESP_OK(mcpwm_del_comparator(comparator_b));
TEST_ESP_OK(mcpwm_del_operator(oper));
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TEST_ESP_OK(mcpwm_del_timer(timer));
}
static void ahc_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
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}
static void ahc_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 50,
.negedge_delay_ticks = 0
};
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
dead_time_config.posedge_delay_ticks = 0;
dead_time_config.negedge_delay_ticks = 100;
dead_time_config.flags.invert_output = true;
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, genb, &dead_time_config));
}
static void alc_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
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}
static void alc_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 50,
.negedge_delay_ticks = 0,
.flags.invert_output = true
};
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
dead_time_config.posedge_delay_ticks = 0;
dead_time_config.negedge_delay_ticks = 100;
dead_time_config.flags.invert_output = false;
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, genb, &dead_time_config));
}
static void ah_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
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}
static void ah_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 50,
.negedge_delay_ticks = 0,
};
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
dead_time_config.posedge_delay_ticks = 0;
dead_time_config.negedge_delay_ticks = 100;
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, genb, &dead_time_config));
}
static void al_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
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}
static void al_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 50,
.negedge_delay_ticks = 0,
.flags.invert_output = true
};
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
dead_time_config.posedge_delay_ticks = 0;
dead_time_config.negedge_delay_ticks = 100;
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, genb, &dead_time_config));
}
static void reda_only_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW)));
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}
static void reda_only_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 50,
.negedge_delay_ticks = 0,
};
// apply deadtime to generator_a
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
// bypass deadtime module for generator_b
dead_time_config.posedge_delay_ticks = 0;
TEST_ESP_OK(mcpwm_generator_set_dead_time(genb, genb, &dead_time_config));
}
static void fedb_only_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW)));
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}
static void fedb_only_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 0,
.negedge_delay_ticks = 0,
};
// generator_a bypass the deadtime module (no delay)
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
// apply dead time to generator_b
dead_time_config.negedge_delay_ticks = 50;
TEST_ESP_OK(mcpwm_generator_set_dead_time(genb, genb, &dead_time_config));
}
static void redfedb_only_set_generator_actions(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb, mcpwm_cmpr_handle_t cmpa, mcpwm_cmpr_handle_t cmpb)
{
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gena,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gena,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpa, MCPWM_GEN_ACTION_LOW)));
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(genb,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(genb,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, cmpb, MCPWM_GEN_ACTION_LOW)));
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}
static void redfedb_only_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 0,
.negedge_delay_ticks = 0,
};
// generator_a bypass the deadtime module (no delay)
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
// apply dead time on both edge for generator_b
dead_time_config.negedge_delay_ticks = 50;
dead_time_config.posedge_delay_ticks = 50;
TEST_ESP_OK(mcpwm_generator_set_dead_time(genb, genb, &dead_time_config));
}
static void invalid_reda_redb_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle_t genb)
{
mcpwm_dead_time_config_t dead_time_config = {
.posedge_delay_ticks = 10,
};
// generator_a adds delay on the posedge
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
// generator_b adds delay on the posedge as well, which is not allowed
TEST_ESP_ERR(ESP_ERR_INVALID_STATE, mcpwm_generator_set_dead_time(genb, genb, &dead_time_config));
// bypass the delay module for generator_a
dead_time_config.posedge_delay_ticks = 0;
TEST_ESP_OK(mcpwm_generator_set_dead_time(gena, gena, &dead_time_config));
// now generator_b can add delay on the posedge
dead_time_config.posedge_delay_ticks = 10;
TEST_ESP_OK(mcpwm_generator_set_dead_time(genb, genb, &dead_time_config));
}
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TEST_CASE("mcpwm_generator_deadtime_classical_configuration", "[mcpwm]")
{
printf("Active High Complementary\r\n");
mcpwm_deadtime_test_template(1000000, 600, 200, 400, 0, 2, ahc_set_generator_actions, ahc_set_dead_time);
printf("Active Low Complementary\r\n");
mcpwm_deadtime_test_template(1000000, 600, 200, 400, 0, 2, alc_set_generator_actions, alc_set_dead_time);
printf("Active High\r\n");
mcpwm_deadtime_test_template(1000000, 600, 200, 400, 0, 2, ah_set_generator_actions, ah_set_dead_time);
printf("Active Low\r\n");
mcpwm_deadtime_test_template(1000000, 600, 200, 400, 0, 2, al_set_generator_actions, al_set_dead_time);
printf("RED on A, Bypass B\r\n");
mcpwm_deadtime_test_template(1000000, 500, 350, 350, 0, 2, reda_only_set_generator_actions, reda_only_set_dead_time);
printf("Bypass A, FED on B\r\n");
mcpwm_deadtime_test_template(1000000, 500, 350, 350, 0, 2, fedb_only_set_generator_actions, fedb_only_set_dead_time);
printf("Bypass A, RED + FED on B\r\n");
mcpwm_deadtime_test_template(1000000, 500, 350, 350, 0, 2, redfedb_only_set_generator_actions, redfedb_only_set_dead_time);
printf("Can't apply one delay module to multiple generators\r\n");
mcpwm_deadtime_test_template(1000000, 500, 350, 350, 0, 2, redfedb_only_set_generator_actions, invalid_reda_redb_set_dead_time);
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}
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TEST_CASE("mcpwm_duty_empty_full", "[mcpwm]")
{
const int gen_gpio_num = 0;
mcpwm_timer_handle_t timer;
mcpwm_oper_handle_t oper;
mcpwm_cmpr_handle_t comparator;
mcpwm_gen_handle_t gen;
mcpwm_timer_config_t timer_config = {
.group_id = 0,
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.resolution_hz = 1 * 1000 * 1000,
.period_ticks = 50, // 50us <-> 20KHz
.count_mode = MCPWM_TIMER_COUNT_MODE_UP,
};
mcpwm_operator_config_t operator_config = {
.group_id = 0,
};
mcpwm_comparator_config_t comparator_config = {
.flags.update_cmp_on_tep = true,
.flags.update_cmp_on_tez = true,
};
printf("install timer, operator and comparator\r\n");
TEST_ESP_OK(mcpwm_new_timer(&timer_config, &timer));
TEST_ESP_OK(mcpwm_new_operator(&operator_config, &oper));
TEST_ESP_OK(mcpwm_new_comparator(oper, &comparator_config, &comparator));
printf("connect MCPWM timer and operators\r\n");
TEST_ESP_OK(mcpwm_operator_connect_timer(oper, timer));
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator, 0));
printf("install MCPWM generator\r\n");
mcpwm_generator_config_t gen_config = {
.gen_gpio_num = gen_gpio_num,
.flags.io_loop_back = true, // we want to read the output level as well
};
TEST_ESP_OK(mcpwm_new_generator(oper, &gen_config, &gen));
printf("set generator actions on timer and compare events\r\n");
TEST_ESP_OK(mcpwm_generator_set_action_on_timer_event(gen,
MCPWM_GEN_TIMER_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, MCPWM_TIMER_EVENT_EMPTY, MCPWM_GEN_ACTION_HIGH)));
TEST_ESP_OK(mcpwm_generator_set_action_on_compare_event(gen,
MCPWM_GEN_COMPARE_EVENT_ACTION(MCPWM_TIMER_DIRECTION_UP, comparator, MCPWM_GEN_ACTION_LOW)));
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printf("start timer\r\n");
TEST_ESP_OK(mcpwm_timer_enable(timer));
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_START_NO_STOP));
// check if the output is a const low level
for (int i = 0; i < 100; i++) {
TEST_ASSERT_EQUAL(0, gpio_get_level(gen_gpio_num));
esp_rom_delay_us(1);
}
// set the compare equals to the period
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator, 50));
vTaskDelay(pdMS_TO_TICKS(10));
// so the output should be a const high level
for (int i = 0; i < 100; i++) {
TEST_ASSERT_EQUAL(1, gpio_get_level(gen_gpio_num));
esp_rom_delay_us(1);
}
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator, 49));
vTaskDelay(pdMS_TO_TICKS(100));
TEST_ESP_OK(mcpwm_comparator_set_compare_value(comparator, 1));
vTaskDelay(pdMS_TO_TICKS(100));
printf("uninstall timer, operator and comparator\r\n");
TEST_ESP_OK(mcpwm_timer_start_stop(timer, MCPWM_TIMER_STOP_EMPTY));
TEST_ESP_OK(mcpwm_timer_disable(timer));
TEST_ESP_OK(mcpwm_del_generator(gen));
TEST_ESP_OK(mcpwm_del_comparator(comparator));
TEST_ESP_OK(mcpwm_del_operator(oper));
TEST_ESP_OK(mcpwm_del_timer(timer));
}