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Dependencies: BLE_API mbed-dev-bin nRF51822
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Diff: source/core/MicroBitCompat.cpp
- Revision:
- 1:8aa5cdb4ab67
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/core/MicroBitCompat.cpp Thu Apr 07 01:33:22 2016 +0100 @@ -0,0 +1,101 @@ +/* +The MIT License (MIT) + +Copyright (c) 2016 British Broadcasting Corporation. +This software is provided by Lancaster University by arrangement with the BBC. + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the "Software"), +to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, +and/or sell copies of the Software, and to permit persons to whom the +Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. +*/ + +/** + * This file contains functions used to maintain compatability and portability. + * It also contains constants that are used elsewhere in the DAL. + */ +#include "MicroBitConfig.h" +#include "MicroBitCompat.h" +#include "ErrorNo.h" + + +/** + * Performs an in buffer reverse of a given char array. + * + * @param s the string to reverse. + * + * @return MICROBIT_OK, or MICROBIT_INVALID_PARAMETER. + */ +int string_reverse(char *s) +{ + //sanity check... + if(s == NULL) + return MICROBIT_INVALID_PARAMETER; + + char *j; + int c; + + j = s + strlen(s) - 1; + + while(s < j) + { + c = *s; + *s++ = *j; + *j-- = c; + } + + return MICROBIT_OK; +} + +/** + * Converts a given integer into a string representation. + * + * @param n The number to convert. + * + * @param s A pointer to the buffer where the resulting string will be stored. + * + * @return MICROBIT_OK, or MICROBIT_INVALID_PARAMETER. + */ +int itoa(int n, char *s) +{ + int i = 0; + int positive = (n >= 0); + + if (s == NULL) + return MICROBIT_INVALID_PARAMETER; + + // Record the sign of the number, + // Ensure our working value is positive. + if (positive) + n = -n; + + // Calculate each character, starting with the LSB. + do { + s[i++] = abs(n % 10) + '0'; + } while (abs(n /= 10) > 0); + + // Add a negative sign as needed + if (!positive) + s[i++] = '-'; + + // Terminate the string. + s[i] = '\0'; + + // Flip the order. + string_reverse(s); + + return MICROBIT_OK; +}