start with USB CDC echo example
this is the Atmel START USB CDC Echo example project for the
SAM E54 Xplained Pro board using an Atmel ATSAME54P20A
microcontroller.
Atmel START information:
- Version: 1.4.1810 (Dec 18, 2018, 5:52 AM GMT+1)
- Server: 1.4.93
- Content version: 1.0.1340
This will serve as basis for the sysmoOCTSIM project
A jenkins contrib script has also been added to the
osmo-ccid-firmware project to build the sysmoOCTSIM firmware
Change-Id: I356de75e7b730d63fb819248e71d36f785932199
diff --git a/sysmoOCTSIM/usb/usb_protocol.c b/sysmoOCTSIM/usb/usb_protocol.c
new file mode 100644
index 0000000..9f6323e
--- /dev/null
+++ b/sysmoOCTSIM/usb/usb_protocol.c
@@ -0,0 +1,161 @@
+/**
+ * \file
+ *
+ * \brief USB protocol implementation.
+ *
+ * This file contains the USB definitions and data structures provided by the
+ * USB 2.0 specification.
+ *
+ * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Subject to your compliance with these terms, you may use Microchip
+ * software and any derivatives exclusively with Microchip products.
+ * It is your responsibility to comply with third party license terms applicable
+ * to your use of third party software (including open source software) that
+ * may accompany Microchip software.
+ *
+ * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
+ * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
+ * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
+ * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
+ * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
+ * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
+ * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
+ * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
+ * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
+ * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
+ * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
+ *
+ * \asf_license_stop
+ */
+
+#define CONF_NO_ASSERT_CHECK
+
+#include "usb_protocol.h"
+
+#ifdef CONF_NO_ASSERT_CHECK
+#define _param_error_check(cond)
+#define _desc_len_check() \
+ if (usb_desc_len(desc) < 2) { \
+ /* Encounter an invalid descriptor. */ \
+ return NULL; \
+ }
+#else
+#define _param_error_check(cond) ASSERT(cond)
+#define _desc_len_check() ASSERT(usb_desc_len(desc) >= 2)
+#endif
+
+uint8_t *usb_find_desc(uint8_t *desc, uint8_t *eof, uint8_t type)
+{
+ _param_error_check(desc && eof && (desc < eof));
+
+ while (desc < eof) {
+ _desc_len_check();
+ if (type == usb_desc_type(desc)) {
+ return desc;
+ }
+ desc = usb_desc_next(desc);
+ }
+ return NULL;
+}
+
+uint8_t *usb_find_iface_after(uint8_t *desc, uint8_t *eof, uint8_t iface_n)
+{
+ _param_error_check(desc && eof && (desc < eof));
+
+ while (desc < eof) {
+ _desc_len_check();
+ if (USB_DT_INTERFACE == usb_desc_type(desc)) {
+ if (iface_n != desc[2]) {
+ return desc;
+ }
+ }
+ desc = usb_desc_next(desc);
+ }
+ return eof;
+}
+
+uint8_t *usb_find_ep_desc(uint8_t *desc, uint8_t *eof)
+{
+ _param_error_check(desc && eof && (desc < eof));
+
+ while (desc < eof) {
+ _desc_len_check();
+ if (USB_DT_INTERFACE == usb_desc_type(desc)) {
+ break;
+ }
+ if (USB_DT_ENDPOINT == usb_desc_type(desc)) {
+ return desc;
+ }
+ desc = usb_desc_next(desc);
+ }
+ return NULL;
+}
+
+uint8_t *usb_find_cfg_desc(uint8_t *desc, uint8_t *eof, uint8_t cfg_value)
+{
+ _param_error_check(desc && eof && (desc < eof));
+
+ desc = usb_find_desc(desc, eof, USB_DT_CONFIG);
+ if (!desc) {
+ return NULL;
+ }
+ while (desc < eof) {
+ _desc_len_check();
+ if (desc[1] != USB_DT_CONFIG) {
+ break;
+ }
+ if (desc[5] == cfg_value) {
+ return desc;
+ }
+ desc = usb_cfg_desc_next(desc);
+ }
+ return NULL;
+}
+
+uint8_t *usb_find_othspdcfg_desc(uint8_t *desc, uint8_t *eof, uint8_t cfg_value)
+{
+ _param_error_check(desc && eof && (desc < eof));
+
+ desc = usb_find_desc(desc, eof, USB_DT_OTHER_SPEED_CONFIG);
+ if (!desc) {
+ return NULL;
+ }
+ while (desc < eof) {
+ _desc_len_check();
+ if (desc[1] != USB_DT_OTHER_SPEED_CONFIG) {
+ break;
+ }
+ if (desc[5] == cfg_value) {
+ return desc;
+ }
+ desc = usb_cfg_desc_next(desc);
+ }
+ return NULL;
+}
+
+uint8_t *usb_find_str_desc(uint8_t *desc, uint8_t *eof, uint8_t str_index)
+{
+ uint8_t i;
+
+ _param_error_check(desc && eof && (desc < eof));
+
+ for (i = 0; desc < eof;) {
+ desc = usb_find_desc(desc, eof, USB_DT_STRING);
+ if (desc) {
+ _desc_len_check();
+ if (i == str_index) {
+ return desc;
+ }
+ i++;
+ desc = usb_desc_next(desc);
+ } else {
+ return NULL;
+ }
+ }
+ return NULL;
+}