samples: sensortile_box: get chosen console device from devicetree

Add app.overlay which contains chosen node
Rework sample to get CDC ACM UART device from devicetree.

Signed-off-by: Johann Fischer <[email protected]>

Author: jfischer-no

samples/boards/sensortile_box/app.overlay

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2021 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		zephyr,console = &cdc_acm_uart0;
+	};
+};
+
+&zephyr_udc0 {
+	cdc_acm_uart0: cdc_acm_uart0 {
+		compatible = "zephyr,cdc-acm-uart";
+		label = "CDC_ACM_0";
+	};
+};

samples/boards/sensortile_box/prj.conf

@@ -32,5 +32,4 @@ CONFIG_USB_DEVICE_PRODUCT="Zephyr CDC SensorTile.box"
 CONFIG_USB_UART_CONSOLE=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
 CONFIG_UART_LINE_CTRL=y
-CONFIG_UART_CONSOLE_ON_DEV_NAME="CDC_ACM_0"
 CONFIG_CBPRINTF_FP_SUPPORT=y

samples/boards/sensortile_box/src/main.c

@@ -250,14 +250,13 @@ static void iis3dhhc_config(const struct device *iis3dhhc)
 void main(void)
 {
 	static const struct device *led0, *led1;
-	const struct device *dev = device_get_binding(
-			CONFIG_UART_CONSOLE_ON_DEV_NAME);
+	const struct device *dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_console));
 	int i, on = 1;
 	int cnt = 1;
 	uint32_t dtr = 0;
 
 	/* Application must enable USB by itself */
-	if (usb_enable(NULL)) {
+	if (!device_is_ready(dev) || usb_enable(NULL)) {
 		return;
 	}