Diploma Thesis in Aerospace Engineering, January 2014

University of Applied Sciences Munich, Faculty 03

Electronics:

1x mbed NXP LPC 1768 Microcontroller
2x XBee S1 Radios + Sparkfun USB Adapter
1x CHR UM6-lt IMU
4x Graupner BEC 8 Motor Controllers
4x ROXXY 2826/09 Brushless Motors
1x Hacker TopFuel LiPo 1300mAh Battery
1x big Selfmade BreakOutBoard to connect all components
1x small BreakOutBoard to connect IMU

Hardware developed with Catia V5R20

Manufactoring Technology: Rapid Prototyping - EOS Formiga P110

Controlled via text based menu with DockLight

__________________

MODSERIAL/RESIZE.cpp@0:1447d2f773db, 2014-07-09 (annotated)

Committer:: DimitriGruebel
Date:: Wed Jul 09 07:35:50 2014 +0000
Revision:: 0:1447d2f773db

Dynamics Test Platform

Who changed what in which revision?

User	Revision	Line number	New contents of line
DimitriGruebel	0:1447d2f773db	1	/*
DimitriGruebel	0:1447d2f773db	2	Copyright (c) 2010 Andy Kirkham
DimitriGruebel	0:1447d2f773db	3
DimitriGruebel	0:1447d2f773db	4	Permission is hereby granted, free of charge, to any person obtaining a copy
DimitriGruebel	0:1447d2f773db	5	of this software and associated documentation files (the "Software"), to deal
DimitriGruebel	0:1447d2f773db	6	in the Software without restriction, including without limitation the rights
DimitriGruebel	0:1447d2f773db	7	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
DimitriGruebel	0:1447d2f773db	8	copies of the Software, and to permit persons to whom the Software is
DimitriGruebel	0:1447d2f773db	9	furnished to do so, subject to the following conditions:
DimitriGruebel	0:1447d2f773db	10
DimitriGruebel	0:1447d2f773db	11	The above copyright notice and this permission notice shall be included in
DimitriGruebel	0:1447d2f773db	12	all copies or substantial portions of the Software.
DimitriGruebel	0:1447d2f773db	13
DimitriGruebel	0:1447d2f773db	14	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
DimitriGruebel	0:1447d2f773db	15	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
DimitriGruebel	0:1447d2f773db	16	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
DimitriGruebel	0:1447d2f773db	17	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
DimitriGruebel	0:1447d2f773db	18	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DimitriGruebel	0:1447d2f773db	19	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
DimitriGruebel	0:1447d2f773db	20	THE SOFTWARE.
DimitriGruebel	0:1447d2f773db	21	*/
DimitriGruebel	0:1447d2f773db	22
DimitriGruebel	0:1447d2f773db	23	#include "MODSERIAL.h"
DimitriGruebel	0:1447d2f773db	24	#include "MACROS.h"
DimitriGruebel	0:1447d2f773db	25
DimitriGruebel	0:1447d2f773db	26	namespace AjK {
DimitriGruebel	0:1447d2f773db	27
DimitriGruebel	0:1447d2f773db	28	int
DimitriGruebel	0:1447d2f773db	29	MODSERIAL::resizeBuffer(int size, IrqType type, bool memory_check)
DimitriGruebel	0:1447d2f773db	30	{
DimitriGruebel	0:1447d2f773db	31	int rval = Ok;
DimitriGruebel	0:1447d2f773db	32
DimitriGruebel	0:1447d2f773db	33	// If the requested size is the same as the current size there's nothing to do,
DimitriGruebel	0:1447d2f773db	34	// just continue to use the same buffer as it's fine as it is.
DimitriGruebel	0:1447d2f773db	35	if (buffer_size[type] == size) return rval;
DimitriGruebel	0:1447d2f773db	36
DimitriGruebel	0:1447d2f773db	37	// Make sure the ISR cannot use the buffers while we are manipulating them.
DimitriGruebel	0:1447d2f773db	38	disableIrq();
DimitriGruebel	0:1447d2f773db	39
DimitriGruebel	0:1447d2f773db	40	// If the requested buffer size is larger than the current size,
DimitriGruebel	0:1447d2f773db	41	// attempt to create a new buffer and use it.
DimitriGruebel	0:1447d2f773db	42	if (buffer_size[type] < size) {
DimitriGruebel	0:1447d2f773db	43	rval = upSizeBuffer(size, type, memory_check);
DimitriGruebel	0:1447d2f773db	44	}
DimitriGruebel	0:1447d2f773db	45	else if (buffer_size[type] > size) {
DimitriGruebel	0:1447d2f773db	46	rval = downSizeBuffer(size, type, memory_check);
DimitriGruebel	0:1447d2f773db	47	}
DimitriGruebel	0:1447d2f773db	48
DimitriGruebel	0:1447d2f773db	49	// Start the ISR system again with the new buffers.
DimitriGruebel	0:1447d2f773db	50	enableIrq();
DimitriGruebel	0:1447d2f773db	51
DimitriGruebel	0:1447d2f773db	52	return rval;
DimitriGruebel	0:1447d2f773db	53	}
DimitriGruebel	0:1447d2f773db	54
DimitriGruebel	0:1447d2f773db	55	int
DimitriGruebel	0:1447d2f773db	56	MODSERIAL::downSizeBuffer(int size, IrqType type, bool memory_check)
DimitriGruebel	0:1447d2f773db	57	{
DimitriGruebel	0:1447d2f773db	58	if (size >= buffer_count[type]) {
DimitriGruebel	0:1447d2f773db	59	return BufferOversize;
DimitriGruebel	0:1447d2f773db	60	}
DimitriGruebel	0:1447d2f773db	61
DimitriGruebel	0:1447d2f773db	62	char s = (char )malloc(size);
DimitriGruebel	0:1447d2f773db	63
DimitriGruebel	0:1447d2f773db	64	if (s == (char *)NULL) {
DimitriGruebel	0:1447d2f773db	65	if (memory_check) {
DimitriGruebel	0:1447d2f773db	66	error("Failed to allocate memory for %s buffer", type == TxIrq ? "TX" : "RX");
DimitriGruebel	0:1447d2f773db	67	}
DimitriGruebel	0:1447d2f773db	68	return NoMemory;
DimitriGruebel	0:1447d2f773db	69	}
DimitriGruebel	0:1447d2f773db	70
DimitriGruebel	0:1447d2f773db	71	int c, new_in = 0;
DimitriGruebel	0:1447d2f773db	72
DimitriGruebel	0:1447d2f773db	73	do {
DimitriGruebel	0:1447d2f773db	74	c = __getc(false);
DimitriGruebel	0:1447d2f773db	75	if (c != -1) s[new_in++] = (char)c;
DimitriGruebel	0:1447d2f773db	76	if (new_in >= size) new_in = 0;
DimitriGruebel	0:1447d2f773db	77	}
DimitriGruebel	0:1447d2f773db	78	while (c != -1);
DimitriGruebel	0:1447d2f773db	79
DimitriGruebel	0:1447d2f773db	80	free((char *)buffer[type]);
DimitriGruebel	0:1447d2f773db	81	buffer[type] = s;
DimitriGruebel	0:1447d2f773db	82	buffer_in[type] = new_in;
DimitriGruebel	0:1447d2f773db	83	buffer_out[type] = 0;
DimitriGruebel	0:1447d2f773db	84	return Ok;
DimitriGruebel	0:1447d2f773db	85	}
DimitriGruebel	0:1447d2f773db	86
DimitriGruebel	0:1447d2f773db	87	int
DimitriGruebel	0:1447d2f773db	88	MODSERIAL::upSizeBuffer(int size, IrqType type, bool memory_check)
DimitriGruebel	0:1447d2f773db	89	{
DimitriGruebel	0:1447d2f773db	90	char s = (char )malloc(size);
DimitriGruebel	0:1447d2f773db	91
DimitriGruebel	0:1447d2f773db	92	if (s == (char *)NULL) {
DimitriGruebel	0:1447d2f773db	93	if (memory_check) {
DimitriGruebel	0:1447d2f773db	94	error("Failed to allocate memory for %s buffer", type == TxIrq ? "TX" : "RX");
DimitriGruebel	0:1447d2f773db	95	}
DimitriGruebel	0:1447d2f773db	96	return NoMemory;
DimitriGruebel	0:1447d2f773db	97	}
DimitriGruebel	0:1447d2f773db	98
DimitriGruebel	0:1447d2f773db	99	if (buffer_count[type] == 0) { // Current buffer empty?
DimitriGruebel	0:1447d2f773db	100	free((char *)buffer[type]);
DimitriGruebel	0:1447d2f773db	101	buffer[type] = s;
DimitriGruebel	0:1447d2f773db	102	buffer_in[type] = 0;
DimitriGruebel	0:1447d2f773db	103	buffer_out[type] = 0;
DimitriGruebel	0:1447d2f773db	104	}
DimitriGruebel	0:1447d2f773db	105	else { // Copy the current contents into the new buffer.
DimitriGruebel	0:1447d2f773db	106	int c, new_in = 0;
DimitriGruebel	0:1447d2f773db	107	do {
DimitriGruebel	0:1447d2f773db	108	c = __getc(false);
DimitriGruebel	0:1447d2f773db	109	if (c != -1) s[new_in++] = (char)c;
DimitriGruebel	0:1447d2f773db	110	if (new_in >= size) new_in = 0; // Shouldn't happen, but be sure.
DimitriGruebel	0:1447d2f773db	111	}
DimitriGruebel	0:1447d2f773db	112	while (c != -1);
DimitriGruebel	0:1447d2f773db	113	free((char *)buffer[type]);
DimitriGruebel	0:1447d2f773db	114	buffer[type] = s;
DimitriGruebel	0:1447d2f773db	115	buffer_in[type] = new_in;
DimitriGruebel	0:1447d2f773db	116	buffer_out[type] = 0;
DimitriGruebel	0:1447d2f773db	117	}
DimitriGruebel	0:1447d2f773db	118
DimitriGruebel	0:1447d2f773db	119	buffer_size[type] = size;
DimitriGruebel	0:1447d2f773db	120	return Ok;
DimitriGruebel	0:1447d2f773db	121	}
DimitriGruebel	0:1447d2f773db	122
DimitriGruebel	0:1447d2f773db	123	}; // namespace AjK ends