samples: modbus: use new USB device stack

Use new USB device stack.

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

Author: jfischer-no

samples/subsys/modbus/rtu_server/overlay-cdc-acm.conf

@@ -1,4 +1,4 @@
-CONFIG_USB_DEVICE_STACK=y
-CONFIG_USB_DEVICE_PRODUCT="Zephyr CDC ACM MODBUS sample"
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=y
+CONFIG_CDC_ACM_SERIAL_PRODUCT_STRING="Zephyr CDC ACM MODBUS sample"
 CONFIG_UART_LINE_CTRL=y
-CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n

samples/subsys/modbus/rtu_server/sample.yaml

@@ -33,4 +33,4 @@ tests:
     extra_args:
       - EXTRA_CONF_FILE="overlay-cdc-acm.conf"
       - DTC_OVERLAY_FILE="cdc-acm.overlay"
-    depends_on: usb_device
+    depends_on: usbd

samples/subsys/modbus/rtu_server/src/main.c

@@ -9,7 +9,6 @@
 #include <zephyr/sys/util.h>
 #include <zephyr/drivers/gpio.h>
 #include <zephyr/modbus/modbus.h>
-#include <zephyr/usb/usb_device.h>
 
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(mbs_sample, LOG_LEVEL_INF);
@@ -147,7 +146,7 @@ int main(void)
 	const struct device *const dev = DEVICE_DT_GET(DT_PARENT(MODBUS_NODE));
 	uint32_t dtr = 0;
 
-	if (!device_is_ready(dev) || usb_enable(NULL)) {
+	if (!device_is_ready(dev)) {
 		return 0;
 	}