1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 // called before main - implement here if board needs it ortherwise, let
19 // the application override this if necessary
20 //void mbed_sdk_init()
25 // Change the NMI pin to an input. This allows NMI pin to
26 // be used as a low power mode wakeup. The application will
27 // need to change the pin back to NMI_b or wakeup only occurs once!
28 void NMI_Handler(void)
31 gpio_init_in(&gpio, PTA4);
34 // Provide ethernet devices with a semi-unique MAC address from the UUID
35 void mbed_mac_address(char *mac)
38 uint32_t word0 = *(uint32_t *)0x40048060;
40 // we only want bottom 16 bits of word1 (MAC bits 32-47)
41 // and bit 1 forced to 1, bit 0 forced to 0
42 // Locally administered MAC, reduced conflicts
43 // http://en.wikipedia.org/wiki/MAC_address
44 uint32_t word1 = *(uint32_t *)0x4004805C;
48 mac[0] = (word1 & 0x000000ff);
49 mac[1] = (word1 & 0x0000ff00) >> 8;
50 mac[2] = (word0 & 0xff000000) >> 24;
51 mac[3] = (word0 & 0x00ff0000) >> 16;
52 mac[4] = (word0 & 0x0000ff00) >> 8;
53 mac[5] = (word0 & 0x000000ff);