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1 | /*#######################################################################################*/ |
1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
3 | /*#######################################################################################*/ |
3 | /*#######################################################################################*/ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
5 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
6 | // + Nur für den privaten Gebrauch / NON-COMMERCIAL USE ONLY |
7 | // + FOR NON COMMERCIAL USE ONLY |
7 | // + FOR NON COMMERCIAL USE ONLY |
8 | // + www.MikroKopter.com |
8 | // + www.MikroKopter.com |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
10 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
11 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
12 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
13 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
14 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
15 | // + Verkauf von Luftbildaufnahmen, usw. |
15 | // + Verkauf von Luftbildaufnahmen, usw. |
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
16 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
17 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
18 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
20 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
21 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
22 | // + eindeutig als Ursprung verlinkt werden |
22 | // + eindeutig als Ursprung verlinkt werden |
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
24 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
25 | // + Benutzung auf eigene Gefahr |
25 | // + Benutzung auf eigene Gefahr |
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
26 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
27 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
28 | // + Die Portierung oder Nutzung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
29 | // + mit unserer Zustimmung zulässig |
29 | // + mit unserer Zustimmung zulässig |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
30 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
31 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
32 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
33 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
34 | // + this list of conditions and the following disclaimer. |
34 | // + this list of conditions and the following disclaimer. |
35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
35 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
36 | // + from this software without specific prior written permission. |
36 | // + from this software without specific prior written permission. |
37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
37 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
38 | // + for non-commercial use (directly or indirectly) |
38 | // + for non-commercial use (directly or indirectly) |
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
39 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
40 | // + with our written permission |
40 | // + with our written permission |
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
41 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
42 | // + clearly linked as origin |
42 | // + clearly linked as origin |
43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
43 | // + * porting the sources to other systems or using the software on other systems (except hardware from www.mikrokopter.de) is not allowed |
44 | // |
44 | // |
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
45 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
46 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
47 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
48 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
49 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
50 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
51 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
52 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
53 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
54 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
55 | // + POSSIBILITY OF SUCH DAMAGE. |
55 | // + POSSIBILITY OF SUCH DAMAGE. |
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
57 | #include <string.h> |
- | |
58 | #include <stdarg.h> |
57 | #include <stdarg.h> |
59 | #include "91x_lib.h" |
58 | #include "91x_lib.h" |
60 | #include "mkprotocol.h" |
59 | #include "mkprotocol.h" |
61 | #include "ramfunc.h" |
60 | #include "ramfunc.h" |
62 | #include "usb.h" |
61 | #include "usb.h" |
63 | - | ||
64 | void Buffer_Clear(Buffer_t* pBuffer) |
- | |
65 | { |
- | |
66 | pBuffer->DataBytes = 0; |
- | |
67 | pBuffer->Position = 0; |
- | |
68 | pBuffer->Locked = FALSE; |
- | |
69 | } |
- | |
70 | - | ||
71 | void Buffer_Init(Buffer_t* pBuffer, u8* pDataBuffer, u16 DataBufferSize) |
- | |
72 | { |
- | |
73 | pBuffer->pData = pDataBuffer; |
- | |
74 | pBuffer->Size = DataBufferSize; |
- | |
75 | Buffer_Clear(pBuffer); |
- | |
76 | } |
- | |
77 | - | ||
78 | u8 Buffer_Copy(Buffer_t* pSrcBuffer, Buffer_t* pDstBuffer) |
- | |
79 | { |
- | |
80 | u8 retval = 0; |
- | |
81 | - | ||
82 | if( (pSrcBuffer != NULL) && (pDstBuffer != NULL) ) |
- | |
83 | { |
- | |
84 | if(pSrcBuffer->Locked && !(pDstBuffer->Locked) && (pDstBuffer->Size >= pSrcBuffer->DataBytes)) |
- | |
85 | { |
- | |
86 | memcpy(pDstBuffer->pData, pSrcBuffer->pData, pSrcBuffer->DataBytes); |
- | |
87 | pDstBuffer->DataBytes = pSrcBuffer->DataBytes; |
- | |
88 | pDstBuffer->Position = 0; |
- | |
89 | pDstBuffer->Locked = TRUE; |
- | |
90 | retval = 1; |
- | |
91 | } |
- | |
92 | } |
- | |
93 | return retval; |
- | |
94 | } |
- | |
95 | 62 | ||
96 | /**************************************************************/ |
63 | /**************************************************************/ |
97 | /* Create serial output frame */ |
64 | /* Create serial output frame */ |
98 | /**************************************************************/ |
65 | /**************************************************************/ |
99 | void MKProtocol_CreateSerialFrame(Buffer_t* pTxBuff, u8 CmdID, u8 Address, u8 numofbuffers , ...) //u8 *data, u8 len, .... |
66 | u8 MKProtocol_CreateSerialFrame(Buffer_t* pTxBuff, u8 CmdID, u8 Address, u8 numofbuffers , ...) //u8 *data, u8 len, .... |
100 | { |
67 | { |
101 | va_list ap; |
68 | va_list ap; |
102 | 69 | ||
103 | u8 a,b,c; |
70 | u8 a,b,c; |
104 | u8 ptr = 0; |
71 | u8 ptr = 0; |
105 | u16 tmpCRC = 0, i; |
72 | u16 tmpCRC = 0, i; |
106 | 73 | ||
107 | u8* pdata = NULL; |
74 | u8* pdata = NULL; |
108 | int len = 0; |
75 | int len = 0; |
109 | 76 | ||
- | 77 | if(pTxBuff->Locked == TRUE) return(0); |
|
110 | if(pTxBuff->Locked == FALSE) |
78 | |
111 | { // tx-buffer is not in use |
79 | // tx-buffer is not in use |
112 | // lock the buffer |
80 | // lock the buffer |
113 | pTxBuff->Locked = TRUE; |
81 | pTxBuff->Locked = TRUE; |
114 | pTxBuff->Position = 0; |
82 | pTxBuff->Position = 0; |
115 | pTxBuff->pData[pTxBuff->Position++] = '#'; // Start character |
83 | pTxBuff->pData[pTxBuff->Position++] = '#'; // Start character |
116 | pTxBuff->pData[pTxBuff->Position++] = 'a' + Address; // Address (a=0; b=1,...) |
84 | pTxBuff->pData[pTxBuff->Position++] = 'a' + Address; // Address (a=0; b=1,...) |
117 | pTxBuff->pData[pTxBuff->Position++] = CmdID; // Command |
85 | pTxBuff->pData[pTxBuff->Position++] = CmdID; // Command |
118 | 86 | ||
119 | va_start(ap, numofbuffers); |
87 | va_start(ap, numofbuffers); |
120 | if(numofbuffers) |
88 | if(numofbuffers) |
121 | { |
89 | { |
122 | pdata = va_arg(ap, u8*); |
90 | pdata = va_arg(ap, u8*); |
123 | len = va_arg(ap, int); |
91 | len = va_arg(ap, int); |
124 | ptr = 0; |
92 | ptr = 0; |
125 | numofbuffers--; |
93 | numofbuffers--; |
126 | } |
94 | } |
- | 95 | while(len) |
|
- | 96 | { |
|
127 | while(len) |
97 | if(len) |
128 | { |
- | |
129 | if(len) |
- | |
130 | { |
98 | { |
131 | a = pdata[ptr++]; |
99 | a = pdata[ptr++]; |
132 | len--; |
100 | len--; |
133 | if((!len) && numofbuffers) // try to jump to next buffer |
- | |
134 | { |
- | |
135 | pdata = va_arg(ap, u8*); |
- | |
136 | len = va_arg(ap, int); |
- | |
137 | ptr = 0; |
- | |
138 | numofbuffers--; |
- | |
139 | } |
- | |
140 | } |
- | |
141 | else a = 0; |
- | |
142 | if(len) |
101 | if((!len) && numofbuffers) // try to jump to next buffer |
143 | { |
- | |
144 | b = pdata[ptr++]; |
- | |
145 | len--; |
- | |
146 | if((!len) && numofbuffers) // try to jump to next buffer |
- | |
147 | { |
102 | { |
148 | pdata = va_arg(ap, u8*); |
103 | pdata = va_arg(ap, u8*); |
149 | len = va_arg(ap, int); |
104 | len = va_arg(ap, int); |
150 | ptr = 0; |
105 | ptr = 0; |
151 | numofbuffers--; |
- | |
152 | } |
106 | numofbuffers--; |
- | 107 | } |
|
153 | } |
108 | } |
154 | else b = 0; |
109 | else a = 0; |
- | 110 | if(len) |
|
- | 111 | { |
|
- | 112 | b = pdata[ptr++]; |
|
- | 113 | len--; |
|
155 | if(len) |
114 | if((!len) && numofbuffers) // try to jump to next buffer |
156 | { |
- | |
157 | c = pdata[ptr++]; |
- | |
158 | len--; |
- | |
159 | if((!len) && numofbuffers) // try to jump to next buffer |
- | |
160 | { |
115 | { |
161 | pdata = va_arg(ap, u8*); |
116 | pdata = va_arg(ap, u8*); |
162 | len = va_arg(ap, int); |
117 | len = va_arg(ap, int); |
163 | ptr = 0; |
118 | ptr = 0; |
164 | numofbuffers--; |
- | |
165 | } |
119 | numofbuffers--; |
166 | } |
- | |
167 | else c = 0; |
- | |
168 | pTxBuff->pData[pTxBuff->Position++] = '=' + (a >> 2); |
- | |
169 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4)); |
- | |
170 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6)); |
- | |
171 | pTxBuff->pData[pTxBuff->Position++] = '=' + ( c & 0x3f); |
120 | } |
172 | } |
121 | } |
173 | va_end(ap); |
122 | else b = 0; |
174 | // add crc |
- | |
175 | for(i = 0; i < pTxBuff->Position; i++) |
123 | if(len) |
176 | { |
124 | { |
- | 125 | c = pdata[ptr++]; |
|
- | 126 | len--; |
|
- | 127 | if((!len) && numofbuffers) // try to jump to next buffer |
|
- | 128 | { |
|
- | 129 | pdata = va_arg(ap, u8*); |
|
- | 130 | len = va_arg(ap, int); |
|
- | 131 | ptr = 0; |
|
- | 132 | numofbuffers--; |
|
177 | tmpCRC += pTxBuff->pData[i]; |
133 | } |
- | 134 | } |
|
- | 135 | else c = 0; |
|
- | 136 | pTxBuff->pData[pTxBuff->Position++] = '=' + (a >> 2); |
|
- | 137 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4)); |
|
- | 138 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6)); |
|
- | 139 | pTxBuff->pData[pTxBuff->Position++] = '=' + ( c & 0x3f); |
|
- | 140 | } |
|
- | 141 | va_end(ap); |
|
- | 142 | // add crc |
|
- | 143 | for(i = 0; i < pTxBuff->Position; i++) |
|
- | 144 | { |
|
- | 145 | tmpCRC += pTxBuff->pData[i]; |
|
178 | } |
146 | } |
179 | tmpCRC %= 4096; |
147 | tmpCRC %= 4096; |
180 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC / 64; |
148 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC / 64; |
181 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC % 64; |
149 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC % 64; |
182 | pTxBuff->pData[pTxBuff->Position++] = '\r'; |
150 | pTxBuff->pData[pTxBuff->Position++] = '\r'; |
183 | pTxBuff->DataBytes = pTxBuff->Position; |
151 | pTxBuff->DataBytes = pTxBuff->Position; |
184 | pTxBuff->Position = 0; // reset buffer position for transmision |
152 | pTxBuff->Position = 0; // reset buffer position for transmision |
185 | } // EOF buffer not in use |
153 | return(pTxBuff->Locked); |
186 | } |
154 | } |
187 | 155 | ||
188 | // typical called in an UART Rx ISR |
156 | // typical called in an UART Rx ISR |
189 | /**************************************************************/ |
157 | /**************************************************************/ |
190 | /* Collect serial frame */ |
158 | /* Collect serial frame */ |
191 | /**************************************************************/ |
159 | /**************************************************************/ |
192 | u8 MKProtocol_CollectSerialFrame(Buffer_t* pRxBuff, u8 c) |
160 | u8 MKProtocol_CollectSerialFrame(Buffer_t* pRxBuff, u8 c) |
193 | { |
161 | { |
194 | if(pRxBuff->Locked == FALSE) |
162 | if(pRxBuff->Locked == FALSE) |
195 | { // rx buffer not locked |
163 | { // rx buffer not locked |
196 | if(c == '#') // if syncronisation character is received |
164 | if(c == '#') // if syncronisation character is received |
197 | { |
165 | { |
198 | pRxBuff->Position = 0; // reset buffer |
166 | pRxBuff->Position = 0; // reset buffer |
199 | pRxBuff->pData[pRxBuff->Position++] = c; // copy 1st byte to buffer |
167 | pRxBuff->pData[pRxBuff->Position++] = c; // copy 1st byte to buffer |
200 | pRxBuff->DataBytes = 1; |
168 | pRxBuff->DataBytes = 1; |
201 | } |
169 | } |
202 | else if (pRxBuff->Position < pRxBuff->Size) // rx buffer not full |
170 | else if (pRxBuff->Position < pRxBuff->Size) // rx buffer not full |
203 | { |
171 | { |
204 | pRxBuff->pData[pRxBuff->Position++] = c; // copy byte to rxd buffer |
172 | pRxBuff->pData[pRxBuff->Position++] = c; // copy byte to rxd buffer |
205 | pRxBuff->DataBytes++; |
173 | pRxBuff->DataBytes++; |
206 | // termination character received and sync has been established |
174 | // termination character received and sync has been established |
207 | if ((c == '\r') && (pRxBuff->pData[0]== '#')) |
175 | if ((c == '\r') && (pRxBuff->pData[0]== '#')) |
208 | { |
176 | { |
209 | // calculate checksum from transmitted data |
177 | // calculate checksum from transmitted data |
210 | u16 crc = 0, i; |
178 | u16 crc = 0, i; |
211 | u8 crc1, crc2; |
179 | u8 crc1, crc2; |
212 | for(i = 0; i < (pRxBuff->Position-3); i++) |
180 | for(i = 0; i < (pRxBuff->Position-3); i++) |
213 | { |
181 | { |
214 | crc += pRxBuff->pData[i]; |
182 | crc += pRxBuff->pData[i]; |
215 | } |
183 | } |
216 | crc %= 4096; |
184 | crc %= 4096; |
217 | crc1 = '=' + crc / 64; |
185 | crc1 = '=' + crc / 64; |
218 | crc2 = '=' + crc % 64; |
186 | crc2 = '=' + crc % 64; |
219 | // compare checksum to transmitted checksum bytes |
187 | // compare checksum to transmitted checksum bytes |
220 | if((crc1 == pRxBuff->pData[pRxBuff->Position-3]) && (crc2 == pRxBuff->pData[pRxBuff->Position-2])) |
188 | if((crc1 == pRxBuff->pData[pRxBuff->Position-3]) && (crc2 == pRxBuff->pData[pRxBuff->Position-2])) |
221 | { |
189 | { |
222 | // checksum is valid |
190 | // checksum is valid |
223 | pRxBuff->Position = 0; |
191 | pRxBuff->Position = 0; |
224 | pRxBuff->Locked = TRUE; // lock the rxd buffer |
192 | pRxBuff->Locked = TRUE; // lock the rxd buffer |
225 | // if 2nd byte is an 'R' start bootloader |
193 | // if 2nd byte is an 'R' start bootloader |
226 | if(pRxBuff->pData[2] == 'R') |
194 | if(pRxBuff->pData[2] == 'R') |
227 | { |
195 | { |
228 | PowerOff(); |
196 | PowerOff(); |
229 | VIC_DeInit(); |
197 | VIC_DeInit(); |
230 | Execute_Bootloader(); // Reset-Commando - Bootloader starten |
198 | Execute_Bootloader(); // Reset-Commando - Bootloader starten |
231 | } |
199 | } |
232 | } // eof checksum valid |
200 | } // eof checksum valid |
233 | else |
201 | else |
234 | { // checksum is invalid |
202 | { // checksum is invalid |
235 | Buffer_Clear(pRxBuff); |
203 | Buffer_Clear(pRxBuff); |
236 | } // eof checksum invalid |
204 | } // eof checksum invalid |
237 | } // eof termination character received |
205 | } // eof termination character received |
238 | } // rxd buffer not full |
206 | } // rxd buffer not full |
239 | else // rxd buffer overrun |
207 | else // rxd buffer overrun |
240 | { |
208 | { |
241 | Buffer_Clear(pRxBuff); |
209 | Buffer_Clear(pRxBuff); |
242 | } // eof rxd buffer overrrun |
210 | } // eof rxd buffer overrrun |
243 | } |
211 | } |
244 | return(pRxBuff->Locked); |
212 | return(pRxBuff->Locked); |
245 | } |
213 | } |
246 | 214 | ||
247 | /**************************************************************/ |
215 | /**************************************************************/ |
248 | /* Decode detination address */ |
216 | /* Decode detination address */ |
249 | /**************************************************************/ |
217 | /**************************************************************/ |
250 | void MKProtocol_DecodeSerialFrameHeader(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
218 | void MKProtocol_DecodeSerialFrameHeader(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
251 | { |
219 | { |
252 | if(pRxBuff->Locked) |
220 | if(pRxBuff->Locked) |
253 | { |
221 | { |
254 | pSerialMsg->Address = pRxBuff->pData[1] - 'a'; |
222 | pSerialMsg->Address = pRxBuff->pData[1] - 'a'; |
255 | pSerialMsg->CmdID = pRxBuff->pData[2]; |
223 | pSerialMsg->CmdID = pRxBuff->pData[2]; |
256 | } |
224 | } |
257 | else |
225 | else |
258 | { |
226 | { |
259 | pSerialMsg->Address = 0; |
227 | pSerialMsg->Address = 0; |
260 | pSerialMsg->CmdID = ' '; |
228 | pSerialMsg->CmdID = ' '; |
261 | } |
229 | } |
262 | } |
230 | } |
263 | 231 | ||
264 | /**************************************************************/ |
232 | /**************************************************************/ |
265 | /* Decode data */ |
233 | /* Decode data */ |
266 | /**************************************************************/ |
234 | /**************************************************************/ |
267 | void MKProtocol_DecodeSerialFrameData(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
235 | void MKProtocol_DecodeSerialFrameData(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
268 | { |
236 | { |
269 | u8 a,b,c,d; |
237 | u8 a,b,c,d; |
270 | u8 x,y,z; |
238 | u8 x,y,z; |
271 | u8 ptrIn = 3; // start with first data byte in rx buffer |
239 | u8 ptrIn = 3; // start with first data byte in rx buffer |
272 | u8 ptrOut = 3; |
240 | u8 ptrOut = 3; |
273 | u8 len = pRxBuff->DataBytes - 6; // must be a multiple of 4 (3 bytes at begin and 3 bytes at end are no payload ) |
241 | u8 len = pRxBuff->DataBytes - 6; // must be a multiple of 4 (3 bytes at begin and 3 bytes at end are no payload ) |
274 | while(len) |
242 | while(len) |
275 | { |
243 | { |
276 | a = pRxBuff->pData[ptrIn++] - '='; |
244 | a = pRxBuff->pData[ptrIn++] - '='; |
277 | b = pRxBuff->pData[ptrIn++] - '='; |
245 | b = pRxBuff->pData[ptrIn++] - '='; |
278 | c = pRxBuff->pData[ptrIn++] - '='; |
246 | c = pRxBuff->pData[ptrIn++] - '='; |
279 | d = pRxBuff->pData[ptrIn++] - '='; |
247 | d = pRxBuff->pData[ptrIn++] - '='; |
280 | //if(ptrIn > ReceivedBytes - 3) break; |
248 | //if(ptrIn > ReceivedBytes - 3) break; |
281 | 249 | ||
282 | x = (a << 2) | (b >> 4); |
250 | x = (a << 2) | (b >> 4); |
283 | y = ((b & 0x0f) << 4) | (c >> 2); |
251 | y = ((b & 0x0f) << 4) | (c >> 2); |
284 | z = ((c & 0x03) << 6) | d; |
252 | z = ((c & 0x03) << 6) | d; |
285 | 253 | ||
286 | if(len--) pRxBuff->pData[ptrOut++] = x; else break; |
254 | if(len--) pRxBuff->pData[ptrOut++] = x; else break; |
287 | if(len--) pRxBuff->pData[ptrOut++] = y; else break; |
255 | if(len--) pRxBuff->pData[ptrOut++] = y; else break; |
288 | if(len--) pRxBuff->pData[ptrOut++] = z; else break; |
256 | if(len--) pRxBuff->pData[ptrOut++] = z; else break; |
289 | } |
257 | } |
290 | pSerialMsg->pData = &(pRxBuff->pData[3]); |
258 | pSerialMsg->pData = &(pRxBuff->pData[3]); |
291 | pSerialMsg->DataLen = ptrOut - 3; // return number of data in bytes |
259 | pSerialMsg->DataLen = ptrOut - 3; // return number of data in bytes |
292 | pRxBuff->Position = 0; |
260 | pRxBuff->Position = 0; |
293 | pRxBuff->DataBytes = ptrOut; |
261 | pRxBuff->DataBytes = ptrOut; |
294 | } |
262 | } |
295 | 263 |