mirror of https://github.com/rusefi/bldc.git
98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
/*
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Copyright 2012-2014 Benjamin Vedder benjamin@vedder.se
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* buffer.c
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*
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* Created on: 13 maj 2013
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* Author: benjamin
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*/
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#include "buffer.h"
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void buffer_append_int16(uint8_t* buffer, int16_t number, int32_t *index) {
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buffer[(*index)++] = number >> 8;
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buffer[(*index)++] = number;
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}
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void buffer_append_uint16(uint8_t* buffer, uint16_t number, int32_t *index) {
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buffer[(*index)++] = number >> 8;
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buffer[(*index)++] = number;
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}
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void buffer_append_int32(uint8_t* buffer, int32_t number, int32_t *index) {
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buffer[(*index)++] = number >> 24;
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buffer[(*index)++] = number >> 16;
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buffer[(*index)++] = number >> 8;
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buffer[(*index)++] = number;
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}
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void buffer_append_uint32(uint8_t* buffer, uint32_t number, int32_t *index) {
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buffer[(*index)++] = number >> 24;
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buffer[(*index)++] = number >> 16;
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buffer[(*index)++] = number >> 8;
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buffer[(*index)++] = number;
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}
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void buffer_append_float16(uint8_t* buffer, float number, float scale, int32_t *index) {
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buffer_append_int16(buffer, (int16_t)(number * scale), index);
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}
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void buffer_append_float32(uint8_t* buffer, float number, float scale, int32_t *index) {
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buffer_append_int32(buffer, (int32_t)(number * scale), index);
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}
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int16_t buffer_get_int16(const uint8_t *buffer, int32_t *index) {
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int16_t res = ((uint16_t) buffer[*index]) << 8 |
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((uint16_t) buffer[*index + 1]);
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*index += 2;
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return res;
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}
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uint16_t buffer_get_uint16(const uint8_t *buffer, int32_t *index) {
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uint16_t res = ((uint16_t) buffer[*index]) << 8 |
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((uint16_t) buffer[*index + 1]);
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*index += 2;
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return res;
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}
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int32_t buffer_get_int32(const uint8_t *buffer, int32_t *index) {
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int32_t res = ((uint32_t) buffer[*index]) << 24 |
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((uint32_t) buffer[*index + 1]) << 16 |
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((uint32_t) buffer[*index + 2]) << 8 |
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((uint32_t) buffer[*index + 3]);
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*index += 4;
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return res;
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}
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uint32_t buffer_get_uint32(const uint8_t *buffer, int32_t *index) {
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uint32_t res = ((uint32_t) buffer[*index]) << 24 |
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((uint32_t) buffer[*index + 1]) << 16 |
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((uint32_t) buffer[*index + 2]) << 8 |
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((uint32_t) buffer[*index + 3]);
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*index += 4;
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return res;
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}
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float buffer_get_float16(const uint8_t *buffer, float scale, int32_t *index) {
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return (float)buffer_get_int16(buffer, index) / scale;
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}
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float buffer_get_float32(const uint8_t *buffer, float scale, int32_t *index) {
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return (float)buffer_get_int32(buffer, index) / scale;
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}
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