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feat(mcpwm): Set group clock prescale dynamically

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MCPWM group clock pre scale was originally fixed to 2, which is
inconvenient. Set group clock prescale dynamically. Now the maximum
resolution of the MCPWM timer is up to 160MHz(when the prescale set
to 1). And add a resulotion config for MCPWM capture.
This commit is contained in:
Chen Jichang
2023-08-22 15:43:30 +08:00
committed by morris
parent 1d91310e0f
commit d8e5b2ac41
14 changed files with 181 additions and 29 deletions
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45
components/driver/test_apps/mcpwm/main/test_mcpwm_common.c
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@@ -123,3 +123,48 @@ TEST_CASE("mcpwm_set_interrupt_priority", "[mcpwm]")
TEST_ESP_OK(mcpwm_del_timer(timer));
TEST_ESP_OK(mcpwm_del_fault(fault));
}
TEST_CASE("mcpwm_group_set_prescale_dynamically", "[mcpwm]")
{
mcpwm_timer_config_t timer_config = {
.clk_src = MCPWM_TIMER_CLK_SRC_DEFAULT,
.resolution_hz = 100 * 1000, // 100kHz
.period_ticks = 400,
.count_mode = MCPWM_TIMER_COUNT_MODE_UP_DOWN,
.group_id = 0,
};
mcpwm_timer_handle_t timer = NULL;
printf("create mcpwm timer\r\n");
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));
mcpwm_generator_config_t generator_config = {
.gen_gpio_num = 0,
};
mcpwm_gen_handle_t generator = NULL;
TEST_ESP_OK(mcpwm_new_generator(oper, &generator_config, &generator));
printf("add carrier to PWM wave\r\n");
mcpwm_carrier_config_t carrier_config = {
.clk_src = MCPWM_CARRIER_CLK_SRC_DEFAULT,
.frequency_hz = 100000, // 100KHz carrier need higher group prescale
.duty_cycle = 0.5,
.first_pulse_duration_us = 10,
};
TEST_ESP_ERR(ESP_ERR_INVALID_STATE, mcpwm_operator_apply_carrier(oper, &carrier_config));
carrier_config.frequency_hz = 2000000; // 2MHz carrier
carrier_config.first_pulse_duration_us = 5;
TEST_ESP_OK(mcpwm_operator_apply_carrier(oper, &carrier_config));
TEST_ESP_OK(mcpwm_del_generator(generator));
TEST_ESP_OK(mcpwm_del_operator(oper));
TEST_ESP_OK(mcpwm_del_timer(timer));
}