Lancaster University's (short term!) clone of mbed-src for micro:bit. This is a copy of the github branch https://github.com/lancaster-university/mbed-classic
Fork of mbed-src by
targets/hal/TARGET_Freescale/TARGET_KPSDK_MCUS/TARGET_MCU_K64F/TARGET_FRDM/mbed_overrides.c
- Committer:
- mbed_official
- Date:
- 2015-07-08
- Revision:
- 584:7c5a5136e412
- Parent:
- 395:bfce16e86ea4
File content as of revision 584:7c5a5136e412:
/* 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 "gpio_api.h" #define CRC16 #include "crc.h" // called before main - implement here if board needs it ortherwise, let // the application override this if necessary //void mbed_sdk_init() //{ // //} // Change the NMI pin to an input. This allows NMI pin to // be used as a low power mode wakeup. The application will // need to change the pin back to NMI_b or wakeup only occurs once! void NMI_Handler(void) { gpio_t gpio; gpio_init_in(&gpio, PTA4); } // Provide ethernet devices with a semi-unique MAC address from the UUID void mbed_mac_address(char *mac) { unsigned int UUID_LOC_BASE = 0x40048054; // First adddress of the 4-word UUID char uuid[16]; // So we can take a local copy of the UUID uint32_t MAC[3]; // 3 16 bits words for the MAC // copy the UUID to the variable MAC[] memcpy(uuid,(const void*)UUID_LOC_BASE,sizeof(uuid)); // generate three CRC16's using different slices of the UUID MAC[0] = crcSlow(uuid, 8); // most significant half-word MAC[1] = crcSlow(uuid, 12); MAC[2] = crcSlow(uuid, 16); // least significant half word // The network stack expects an array of 6 bytes // so we copy, and shift and copy from the half-word array to the byte array mac[0] = MAC[0] >> 8; mac[1] = MAC[0]; mac[2] = MAC[1] >> 8; mac[3] = MAC[1]; mac[4] = MAC[2] >> 8; mac[5] = MAC[2]; // We want to force bits [1:0] of the most significant byte [0] // to be "10" // http://en.wikipedia.org/wiki/MAC_address mac[0] |= 0x02; // force bit 1 to a "1" = "Locally Administered" mac[0] &= 0xFE; // force bit 0 to a "0" = Unicast }