Diff: source/daplink/daplink_debug.h

Revision:

0:01f31e923fe2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/source/daplink/daplink_debug.h	Tue Apr 07 12:55:42 2020 +0200
@@ -0,0 +1,110 @@
+/**
+ * @file    daplink_debug.h
+ * @brief   optional trace messages useful in development
+ *
+ * DAPLink Interface Firmware
+ * Copyright (c) 2009-2016, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef DAPLINK_DEBUG_H
+#define DAPLINK_DEBUG_H
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include "cmsis_os2.h"
+#include "rl_usb.h"
+#include "util.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef MSC_DEBUG
+//#define MSC_DEBUG
+#endif
+
+#if defined (MSC_DEBUG)
+
+static const char error_msg[] = "\r\n<OVERFLOW>\r\n";
+
+static inline uint32_t daplink_debug(uint8_t *buf, uint32_t size)
+{
+    uint32_t total_free;
+    uint32_t write_free;
+    uint32_t error_len = strlen(error_msg);
+    total_free = USBD_CDC_ACM_DataFree();
+
+    if (total_free < error_len) {
+        // No space
+        return 0;
+    }
+
+    // Size available for writing
+    write_free = total_free - error_len;
+    size = MIN(write_free, size);
+    USBD_CDC_ACM_DataSend(buf, size);
+
+    if (write_free == size) {
+        USBD_CDC_ACM_DataSend((uint8_t *)error_msg, error_len);
+    }
+
+    return size;
+}
+
+static char daplink_debug_buf[128] = {0};
+static inline uint32_t daplink_debug_print(const char *format, ...)
+{
+    uint32_t ret;
+    int32_t r = 0;
+    va_list arg;
+    ret = 1;
+    va_start(arg, format);
+    r = vsnprintf(daplink_debug_buf, sizeof(daplink_debug_buf), format, arg);
+
+    if (r >= sizeof(daplink_debug_buf)) {
+        r = snprintf(daplink_debug_buf, sizeof(daplink_debug_buf), "<Error - string length %i exceeds print buffer>\r\n", r);
+        ret = 0;
+    }
+
+    va_end(arg);
+    daplink_debug((uint8_t *)daplink_debug_buf, r);
+    return ret;
+}
+
+#else
+
+static inline uint32_t daplink_debug_print(const char *format, ...)
+{
+    return 1;
+}
+
+static inline uint32_t daplink_debug(uint8_t *data, uint32_t size)
+{
+    return 1;
+}
+
+#endif
+
+#define debug_msg(fmt, args...) daplink_debug_print(fmt, ## args);
+#define debug_data(buf, size) daplink_debug(buf, size);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif