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mcpwm: can't apply the same delay module to multiple generators

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This is a hardware limitation, one delay module can only be used by one generator at one time.

Closes https://github.com/espressif/esp-idf/issues/11327
This commit is contained in:
morris
2023-05-05 16:29:20 +08:00
parent 66c999fcf8
commit 72d0f5b35b
9 changed files with 105 additions and 12 deletions
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20
components/driver/test_apps/mcpwm/main/test_mcpwm_gen.c
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@@ -591,6 +591,23 @@ static void redfedb_only_set_dead_time(mcpwm_gen_handle_t gena, mcpwm_gen_handle
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));
}
TEST_CASE("mcpwm_generator_deadtime_classical_configuration", "[mcpwm]")
{
printf("Active High Complementary\r\n");
@@ -613,6 +630,9 @@ TEST_CASE("mcpwm_generator_deadtime_classical_configuration", "[mcpwm]")
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);
}
TEST_CASE("mcpwm_duty_empty_full", "[mcpwm]")