samples: openthread: uset new USB device stack in coprocessor sample

Use CDC ACM serial backend from the new USB device stack.
It was surprising to find out that the porting layer does not only use
the UART API. The legacy USB device stack API used in the porting layer
has been deprecated and is causing CI failures.

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

Author: jfischer-no

modules/openthread/platform/uart.c

@@ -169,14 +169,6 @@ otError otPlatUartEnable(void)
 					(void *)&ot_uart);
 
 	if (DT_NODE_HAS_COMPAT(DT_CHOSEN(zephyr_ot_uart), zephyr_cdc_acm_uart)) {
-		int ret;
-
-		ret = usb_enable(NULL);
-		if (ret != 0 && ret != -EALREADY) {
-			LOG_ERR("Failed to enable USB");
-			return OT_ERROR_FAILED;
-		}
-
 		/* Data Carrier Detect Modem - mark connection as established */
 		(void)uart_line_ctrl_set(ot_uart.dev, UART_LINE_CTRL_DCD, 1);
 		/* Data Set Ready - the NCP SoC is ready to communicate */
@@ -190,14 +182,6 @@ otError otPlatUartEnable(void)
 
 otError otPlatUartDisable(void)
 {
-	if (DT_NODE_HAS_COMPAT(DT_CHOSEN(zephyr_ot_uart), zephyr_cdc_acm_uart)) {
-		int ret = usb_disable();
-
-		if (ret) {
-			LOG_WRN("Failed to disable USB (%d)", ret);
-		}
-	}
-
 	uart_irq_tx_disable(ot_uart.dev);
 	uart_irq_rx_disable(ot_uart.dev);
 	return OT_ERROR_NONE;

samples/net/openthread/coprocessor/overlay-tri-n4m-br.conf

@@ -3,16 +3,13 @@ CONFIG_SHELL_PROMPT_UART="ncp-uart:~$ "
 
 CONFIG_STDOUT_CONSOLE=y
 CONFIG_GPIO=y
-CONFIG_USB_DEVICE_STACK=y
-CONFIG_USB_DEVICE_PRODUCT="OpenThread Co-Processor K64"
 CONFIG_LOG=y
-CONFIG_USB_DRIVER_LOG_LEVEL_ERR=y
-CONFIG_USB_CDC_ACM=y
-CONFIG_USB_DEVICE_LOG_LEVEL_ERR=y
-CONFIG_SERIAL=y
-CONFIG_UART_INTERRUPT_DRIVEN=y
+
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=y
+CONFIG_CDC_ACM_SERIAL_PRODUCT_STRING="OpenThread Co-Processor K64"
+CONFIG_USBD_CDC_ACM_LOG_LEVEL_OFF=y
 CONFIG_UART_LINE_CTRL=y
-CONFIG_USB_REQUEST_BUFFER_SIZE=2048
 
 # disable ethernet on K64
 CONFIG_NET_L2_ETHERNET=n

samples/net/openthread/coprocessor/overlay-usb-nrf-br.conf

@@ -3,10 +3,10 @@
 CONFIG_SHELL_PROMPT_UART="ncp-uart:~$ "
 
 # Use USB-CDC-ACM for Co-Processor
-CONFIG_USB_DEVICE_STACK=y
-CONFIG_USB_DEVICE_PRODUCT="OpenThread CoProcessor NRF"
-CONFIG_USB_CDC_ACM=y
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=y
+CONFIG_CDC_ACM_SERIAL_PRODUCT_STRING="OpenThread CoProcessor NRF"
+CONFIG_USBD_CDC_ACM_LOG_LEVEL_OFF=y
 CONFIG_UART_LINE_CTRL=y
-CONFIG_USB_REQUEST_BUFFER_SIZE=2048
 
 CONFIG_ISR_STACK_SIZE=4096