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tests: drivers: pwm: Update PWM events test #26125

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Merged
nordic-piks merged 1 commit into from
Dec 8, 2025
Merged

tests: drivers: pwm: Update PWM events test #26125

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6 changes: 5 additions & 1 deletion tests/drivers/pwm/pwm_events/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,10 @@ tst_timer: &timer131 {
status = "okay";
};

pwm_led: &led2 {
pwm_led: &led3 {
status = "okay";
};

debug_pin: &led1 {
status = "okay";
};
6 changes: 5 additions & 1 deletion tests/drivers/pwm/pwm_events/boards/nrf54l15dk_nrf54l15_cpuapp.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,10 @@ tst_timer: &timer20 {
status = "okay";
};

pwm_led: &led2 {
pwm_led: &led3 {
status = "okay";
};

debug_pin: &led1 {
status = "okay";
};
6 changes: 5 additions & 1 deletion tests/drivers/pwm/pwm_events/boards/nrf54lm20dk_nrf54lm20a_cpuapp.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,10 @@ tst_timer: &timer20 {
status = "okay";
};

pwm_led: &led2 {
pwm_led: &led3 {
status = "okay";
};

debug_pin: &led1 {
status = "okay";
};
4 changes: 4 additions & 0 deletions tests/drivers/pwm/pwm_events/boards/nrf54ls05dk_nrf54ls05b_cpuapp.overlay
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Original file line number Diff line number Diff line change
Expand Up @@ -19,3 +19,7 @@ tst_timer: &timer20 {
pwm_led: &led0 {
status = "okay";
};

debug_pin: &led1 {
status = "okay";
};
3 changes: 3 additions & 0 deletions tests/drivers/pwm/pwm_events/prj.conf
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Original file line number Diff line number Diff line change
Expand Up @@ -3,3 +3,6 @@ CONFIG_NRFX_TIMER=y
CONFIG_NRFX_GPPI=y

CONFIG_ZTEST=y

# Enable for debugging purposes only
CONFIG_PPI_TRACE=n
36 changes: 34 additions & 2 deletions tests/drivers/pwm/pwm_events/src/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,14 @@
#include <nrfx_pwm.h>
#include <nrfx_timer.h>
#include <helpers/nrfx_gppi.h>
#include <debug/ppi_trace.h>

#define PWM_OUTPUT_PIN NRF_DT_GPIOS_TO_PSEL(DT_NODELABEL(pwm_led), gpios)

#if defined(CONFIG_PPI_TRACE)
#define DEBUG_PIN NRF_DT_GPIOS_TO_PSEL(DT_NODELABEL(debug_pin), gpios)
#endif

#define SLEEP_TIME_MS 500

struct pwm_events_fixture {
Expand All @@ -30,6 +35,7 @@ static void configure_pwm(nrfx_pwm_t *pwm)
NRF_PWM_PIN_NOT_CONNECTED, NRF_PWM_PIN_NOT_CONNECTED);

pwm_config.count_mode = NRF_PWM_MODE_UP_AND_DOWN;
pwm_config.top_value = 0x1000;

zassert_ok(nrfx_pwm_init(pwm, &pwm_config, NULL, NULL), "NRFX PWM init failed\n");
}
Expand Down Expand Up @@ -72,11 +78,27 @@ static void run_pwm_event_test_case(struct pwm_events_fixture *fixture,
uint32_t pwm_event_address;
uint32_t timer_cc_before, timer_cc_after;

#if defined(CONFIG_PPI_TRACE)
void *handle;
#endif

pwm_event_address = nrf_pwm_event_address_get(fixture->pwm->p_reg, tested_pwm_event);
setup_dppi_connection(&fixture->gppi_handle, fixture->domain_id,
fixture->timer_task_address, pwm_event_address);

nrf_pwm_event_clear(fixture->pwm->p_reg, tested_pwm_event);

#if defined(CONFIG_PPI_TRACE)
/*
* Note that configuring PPI trace
* will break DPPI connection to the timer.
* Timer will not count events
*/
handle = ppi_trace_config(DEBUG_PIN, pwm_event_address);
zassert_not_null(handle, "PPI trace configuration failed\n");
ppi_trace_enable(handle);
#endif


timer_cc_before = nrfx_timer_capture(fixture->test_timer, NRF_TIMER_CC_CHANNEL0);
nrfx_pwm_simple_playback(fixture->pwm, fixture->pwm_sequence, 1, NRFX_PWM_FLAG_STOP);
k_msleep(SLEEP_TIME_MS);
Expand All @@ -89,6 +111,10 @@ static void run_pwm_event_test_case(struct pwm_events_fixture *fixture,
nrf_pwm_event_clear(fixture->pwm->p_reg, tested_pwm_event);
clear_dppi_connection(&fixture->gppi_handle, fixture->domain_id,
fixture->timer_task_address, pwm_event_address);

#if defined(CONFIG_PPI_TRACE)
ppi_trace_disable(handle);
#endif
}

ZTEST_F(pwm_events, test_pwm_stop_event)
Expand Down Expand Up @@ -117,12 +143,18 @@ ZTEST_F(pwm_events, test_pwm_loopsdone_event)
run_pwm_event_test_case(fixture, NRF_PWM_EVENT_LOOPSDONE, 1, "LOOPSDONE");
}

ZTEST_F(pwm_events, test_pwm_comparematch_event)
{
run_pwm_event_test_case(fixture, offsetof(NRF_PWM_Type, EVENTS_COMPAREMATCH[0]),
fixture->pwm_sequence->length * 2, "COMPAREMATCH");
}

static void *test_setup(void)
{
static struct pwm_events_fixture fixture;
static nrfx_timer_t test_timer = NRFX_TIMER_INSTANCE(DT_REG_ADDR(DT_NODELABEL(tst_timer)));
static nrfx_pwm_t pwm = NRFX_PWM_INSTANCE(DT_REG_ADDR(DT_NODELABEL(dut_pwm)));
static nrf_pwm_values_common_t pwm_duty_cycle_values[] = {0x500, 0x600};
static nrf_pwm_values_common_t pwm_duty_cycle_values[] = {0x500, 0x600, 0x500, 0x600};
static nrf_pwm_sequence_t pwm_sequence = {.values = {pwm_duty_cycle_values},
.length = ARRAY_SIZE(pwm_duty_cycle_values),
.repeats = 0,
Expand Down