samples: shields: npm1300_ek: Added LED to example

Updated shield sample to drive LED Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
Willmish · Jun 23, 2023 · d79cf20 · d79cf20
1 parent 198d5b8
commit d79cf20
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diff --git a/samples/shields/npm1300_ek/prj.conf b/samples/shields/npm1300_ek/prj.conf
@@ -6,3 +6,4 @@ CONFIG_LOG=y
 CONFIG_GPIO=y
 CONFIG_REGULATOR=y
 CONFIG_SENSOR=y
+CONFIG_LED=y
diff --git a/samples/shields/npm1300_ek/src/main.c b/samples/shields/npm1300_ek/src/main.c
@@ -10,6 +10,7 @@
 #include <zephyr/drivers/regulator.h>
 #include <zephyr/drivers/sensor.h>
 #include <zephyr/drivers/sensor/npm1300_charger.h>
+#include <zephyr/drivers/led.h>
 #include <zephyr/dt-bindings/regulator/npm1300.h>
 #include <zephyr/sys/printk.h>
 #include <getopt.h>
@@ -23,6 +24,8 @@ static const struct device *regulators = DEVICE_DT_GET(DT_NODELABEL(npm1300_ek_r
 
 static const struct device *charger = DEVICE_DT_GET(DT_NODELABEL(npm1300_ek_charger));
 
+static const struct device *leds = DEVICE_DT_GET(DT_NODELABEL(npm1300_ek_leds));
+
 void configure_ui(void)
 {
 	int ret;
@@ -40,6 +43,11 @@ void configure_ui(void)
 	}
 
 	printk("Set up button at %s pin %d\n", button1.port->name, button1.pin);
+
+	if (!device_is_ready(leds)) {
+		printk("Error: led device is not ready\n");
+		return;
+	}
 }
 
 void read_sensors(void)
@@ -92,6 +100,15 @@ int main(void)
 			regulator_parent_dvs_state_set(regulators, dvs_state);
 		}
 
+		/* Update PMIC LED if button state has changed */
+		if (button_state != last_button) {
+			if (button_state) {
+				led_on(leds, 2U);
+			} else {
+				led_off(leds, 2U);
+			}
+		}
+
 		/* Read and display charger status */
 		static int count;