Diff: common/mbed_interface.c

Revision:

0:e87aa4c49e95

diff -r 000000000000 -r e87aa4c49e95 common/mbed_interface.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/common/mbed_interface.c	Tue Jun 04 21:51:46 2019 +0000
@@ -0,0 +1,113 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * 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.
+ */
+#include <stdio.h>
+#include "mbed_interface.h"
+
+#include "gpio_api.h"
+#include "wait_api.h"
+#include "semihost_api.h"
+#include "mbed_error.h"
+#include "toolchain.h"
+
+#if DEVICE_SEMIHOST
+
+// return true if a debugger is attached, indicating mbed interface is connected
+int mbed_interface_connected(void) {
+    return semihost_connected();
+}
+
+int mbed_interface_reset(void) {
+    if (mbed_interface_connected()) {
+        semihost_reset();
+        return 0;
+    } else {
+        return -1;
+    }
+}
+
+WEAK int mbed_interface_uid(char *uid) {
+    if (mbed_interface_connected()) {
+        return semihost_uid(uid); // Returns 0 if successful, -1 on failure
+    } else {
+        uid[0] = 0;
+        return -1;
+    }
+}
+
+int mbed_interface_disconnect(void) {
+    int res;
+    if (mbed_interface_connected()) {
+        if ((res = semihost_disabledebug()) != 0)
+            return res;
+        while (mbed_interface_connected());
+        return 0;
+    } else {
+        return -1;
+    }
+}
+
+int mbed_interface_powerdown(void) {
+    int res;
+    if (mbed_interface_connected()) {
+        if ((res = semihost_powerdown()) != 0)
+            return res;
+        while (mbed_interface_connected());
+        return 0;
+    } else {
+        return -1;
+    }
+}
+
+// for backward compatibility
+void mbed_reset(void) {
+    mbed_interface_reset();
+}
+
+WEAK int mbed_uid(char *uid) {
+    return mbed_interface_uid(uid);
+}
+#endif
+
+WEAK void mbed_mac_address(char *mac) {
+#if DEVICE_SEMIHOST
+    char uid[DEVICE_ID_LENGTH + 1];
+    int i;
+
+    // if we have a UID, extract the MAC
+    if (mbed_interface_uid(uid) == 0) {
+        char *p = uid;
+#if defined(DEVICE_MAC_OFFSET)
+        p += DEVICE_MAC_OFFSET;
+#endif
+        for (i=0; i<6; i++) {
+            int byte;
+            sscanf(p, "%2x", &byte);
+            mac[i] = byte;
+            p += 2;
+        }
+        mac[0] &= ~0x01;    // reset the IG bit in the address; see IEE 802.3-2002, Section 3.2.3(b)
+    } else {  // else return a default MAC
+#endif
+        mac[0] = 0x00;
+        mac[1] = 0x02;
+        mac[2] = 0xF7;
+        mac[3] = 0xF0;
+        mac[4] = 0x00;
+        mac[5] = 0x00;
+#if DEVICE_SEMIHOST
+    }
+#endif
+}