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Diff: platform/mbed_interface.c
- Revision:
- 149:156823d33999
diff -r 21d94c44109e -r 156823d33999 platform/mbed_interface.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/platform/mbed_interface.c Fri Oct 28 11:17:30 2016 +0100 @@ -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 "platform/mbed_interface.h" + +#include "hal/gpio_api.h" +#include "platform/wait_api.h" +#include "platform/semihost_api.h" +#include "platform/mbed_error.h" +#include "platform/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 +}