tests: benchmarks: timer_waiting: tweak test scenario

Remove blinking LED, use k_busy_wait instead of looping to keep CPU busy

Signed-off-by: Bartlomiej Buczek <[email protected]>

Author: nordic-babu

tests/benchmarks/power_consumption/timer_waiting/src/driver_test.c

@@ -6,45 +6,32 @@
 
 #include <zephyr/kernel.h>
 #include <zephyr/drivers/counter.h>
-#include <zephyr/drivers/gpio.h>
 
 #define ALARM_CHANNEL_ID (0)
-#define LED0_NODE DT_ALIAS(led0)
-static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
 const struct device *const counter_dev = DEVICE_DT_GET(DT_ALIAS(counter));
-static bool state = true;
-
 struct counter_alarm_cfg counter_cfg;
 
-void counter_handler(const struct device *counter_dev, uint8_t id, uint32_t ticks, void *user_data)
+void counter_handler(const struct device *counter_dev, uint8_t chan_id,
+	uint32_t ticks, void *user_data)
 {
-	counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID, user_data);
-	gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
-	for (int i = 1000000UL; i > 0; i--) {
-		if (state == true) {
-			state = false;
-			gpio_pin_set_dt(&led, 1);
-		} else {
-			state = true;
-			gpio_pin_set_dt(&led, 0);
-		}
-	}
-	gpio_pin_configure_dt(&led, GPIO_OUTPUT_INACTIVE);
+	k_busy_wait(500000);
+	counter_stop(counter_dev);
 }
 
 int main(void)
 {
-	counter_start(counter_dev);
-
-	counter_cfg.flags = 0;
-	counter_cfg.ticks = counter_us_to_ticks(counter_dev, 1000000UL);
-	counter_cfg.callback = counter_handler;
-	counter_cfg.user_data = &counter_cfg;
+	while (1) {
+		k_msleep(1500);
+		counter_start(counter_dev);
 
-	counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID, &counter_cfg);
+		counter_cfg.flags = 0;
+		counter_cfg.ticks = counter_us_to_ticks(counter_dev, 1000000UL);
+		counter_cfg.callback = counter_handler;
+		counter_cfg.user_data = &counter_cfg;
 
-	while (1) {
-		k_sleep(K_FOREVER);
+		counter_set_channel_alarm(counter_dev, ALARM_CHANNEL_ID, &counter_cfg);
+		k_msleep(1500);
 	}
+
 	return 0;
 }