1 files changed, 121 insertions, 0 deletions
diff --git a/usb_start.c b/usb_start.c
new file mode 100644
index 0000000..de86172
--- /dev/null
+++ b/usb_start.c
@@ -0,0 +1,121 @@
+/*
+ * Code generated from Atmel Start.
+ *
+ * This file will be overwritten when reconfiguring your Atmel Start project.
+ * Please copy examples or other code you want to keep to a separate file or main.c
+ * to avoid loosing it when reconfiguring.
+ */
+#include "atmel_start.h"
+#include "usb_start.h"
+
+#if CONF_USBD_HS_SP
+static uint8_t single_desc_bytes[] = {
+    /* Device descriptors and Configuration descriptors list. */
+    CDCD_ACM_HS_DESCES_LS_FS};
+static uint8_t single_desc_bytes_hs[] = {
+    /* Device descriptors and Configuration descriptors list. */
+    CDCD_ACM_HS_DESCES_HS};
+#define CDCD_ECHO_BUF_SIZ CONF_USB_CDCD_ACM_DATA_BULKIN_MAXPKSZ_HS
+#else
+static uint8_t single_desc_bytes[] = {
+    /* Device descriptors and Configuration descriptors list. */
+    CDCD_ACM_DESCES_LS_FS};
+#define CDCD_ECHO_BUF_SIZ CONF_USB_CDCD_ACM_DATA_BULKIN_MAXPKSZ
+#endif
+
+static struct usbd_descriptors single_desc[]
+    = {{single_desc_bytes, single_desc_bytes + sizeof(single_desc_bytes)}
+#if CONF_USBD_HS_SP
+       ,
+       {single_desc_bytes_hs, single_desc_bytes_hs + sizeof(single_desc_bytes_hs)}
+#endif
+};
+
+/** Buffers to receive and echo the communication bytes. */
+static uint32_t usbd_cdc_buffer[CDCD_ECHO_BUF_SIZ / 4];
+
+/** Ctrl endpoint buffer */
+static uint8_t ctrl_buffer[64];
+
+/**
+ * \brief Callback invoked when bulk OUT data received
+ */
+static bool usb_device_cb_bulk_out(const uint8_t ep, const enum usb_xfer_code rc, const uint32_t count)
+{
+	cdcdf_acm_write((uint8_t *)usbd_cdc_buffer, count);
+
+	/* No error. */
+	return false;
+}
+
+/**
+ * \brief Callback invoked when bulk IN data received
+ */
+static bool usb_device_cb_bulk_in(const uint8_t ep, const enum usb_xfer_code rc, const uint32_t count)
+{
+	/* Echo data. */
+	cdcdf_acm_read((uint8_t *)usbd_cdc_buffer, sizeof(usbd_cdc_buffer));
+
+	/* No error. */
+	return false;
+}
+
+/**
+ * \brief Callback invoked when Line State Change
+ */
+static bool usb_device_cb_state_c(usb_cdc_control_signal_t state)
+{
+	if (state.rs232.DTR) {
+		/* Callbacks must be registered after endpoint allocation */
+		cdcdf_acm_register_callback(CDCDF_ACM_CB_READ, (FUNC_PTR)usb_device_cb_bulk_out);
+		cdcdf_acm_register_callback(CDCDF_ACM_CB_WRITE, (FUNC_PTR)usb_device_cb_bulk_in);
+		/* Start Rx */
+		cdcdf_acm_read((uint8_t *)usbd_cdc_buffer, sizeof(usbd_cdc_buffer));
+	}
+
+	/* No error. */
+	return false;
+}
+
+/**
+ * \brief CDC ACM Init
+ */
+void cdc_device_acm_init(void)
+{
+	/* usb stack init */
+	usbdc_init(ctrl_buffer);
+
+	/* usbdc_register_funcion inside */
+	cdcdf_acm_init();
+
+	usbdc_start(single_desc);
+	usbdc_attach();
+}
+
+/**
+ * Example of using CDC ACM Function.
+ * \note
+ * In this example, we will use a PC as a USB host:
+ * - Connect the DEBUG USB on XPLAINED board to PC for program download.
+ * - Connect the TARGET USB on XPLAINED board to PC for running program.
+ * The application will behave as a virtual COM.
+ * - Open a HyperTerminal or other COM tools in PC side.
+ * - Send out a character or string and it will echo the content received.
+ */
+void cdcd_acm_example(void)
+{
+	while (!cdcdf_acm_is_enabled()) {
+		// wait cdc acm to be installed
+	};
+
+	cdcdf_acm_register_callback(CDCDF_ACM_CB_STATE_C, (FUNC_PTR)usb_device_cb_state_c);
+
+	while (1) {
+	}
+}
+
+void usb_init(void)
+{
+
+	cdc_device_acm_init();
+}