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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 |
6 | // + Nur für den privaten Gebrauch |
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 der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
28 | // + Die PORTIERUNG 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 this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
43 | // + * PORTING this software (or part of it) to systems (other than 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> |
57 | #include <string.h> |
58 | #include <stdarg.h> |
58 | #include <stdarg.h> |
59 | #include "91x_lib.h" |
59 | #include "91x_lib.h" |
60 | #include "mkprotocol.h" |
60 | #include "mkprotocol.h" |
61 | #include "ramfunc.h" |
61 | #include "ramfunc.h" |
62 | #include "usb.h" |
62 | #include "usb.h" |
63 | 63 | ||
64 | void Buffer_Clear(Buffer_t* pBuffer) |
64 | void Buffer_Clear(Buffer_t* pBuffer) |
65 | { |
65 | { |
66 | pBuffer->DataBytes = 0; |
66 | pBuffer->DataBytes = 0; |
67 | pBuffer->Position = 0; |
67 | pBuffer->Position = 0; |
68 | pBuffer->Locked = FALSE; |
68 | pBuffer->Locked = FALSE; |
69 | } |
69 | } |
70 | 70 | ||
71 | void Buffer_Init(Buffer_t* pBuffer, u8* pDataBuffer, u16 DataBufferSize) |
71 | void Buffer_Init(Buffer_t* pBuffer, u8* pDataBuffer, u16 DataBufferSize) |
72 | { |
72 | { |
73 | pBuffer->pData = pDataBuffer; |
73 | pBuffer->pData = pDataBuffer; |
74 | pBuffer->Size = DataBufferSize; |
74 | pBuffer->Size = DataBufferSize; |
75 | Buffer_Clear(pBuffer); |
75 | Buffer_Clear(pBuffer); |
76 | } |
76 | } |
77 | 77 | ||
78 | /**************************************************************/ |
78 | /**************************************************************/ |
79 | /* Create serial output frame */ |
79 | /* Create serial output frame */ |
80 | /**************************************************************/ |
80 | /**************************************************************/ |
81 | void MKProtocol_CreateSerialFrame(Buffer_t* pTxBuff, u8 CmdID, u8 Address, u8 numofbuffers , ...) //u8 *data, u8 len, .... |
81 | void MKProtocol_CreateSerialFrame(Buffer_t* pTxBuff, u8 CmdID, u8 Address, u8 numofbuffers , ...) //u8 *data, u8 len, .... |
82 | { |
82 | { |
83 | va_list ap; |
83 | va_list ap; |
84 | 84 | ||
85 | u8 a,b,c; |
85 | u8 a,b,c; |
86 | u8 ptr = 0; |
86 | u8 ptr = 0; |
87 | u16 tmpCRC = 0, i; |
87 | u16 tmpCRC = 0, i; |
88 | 88 | ||
89 | u8* pdata = NULL; |
89 | u8* pdata = NULL; |
90 | int len = 0; |
90 | int len = 0; |
91 | 91 | ||
92 | if(pTxBuff->Locked == FALSE) |
92 | if(pTxBuff->Locked == FALSE) |
93 | { // tx-buffer is not in use |
93 | { // tx-buffer is not in use |
- | 94 | // lock the buffer |
|
- | 95 | pTxBuff->Locked = TRUE; |
|
94 | pTxBuff->Position = 0; |
96 | pTxBuff->Position = 0; |
95 | pTxBuff->pData[pTxBuff->Position++] = '#'; // Start character |
97 | pTxBuff->pData[pTxBuff->Position++] = '#'; // Start character |
96 | pTxBuff->pData[pTxBuff->Position++] = 'a' + Address; // Address (a=0; b=1,...) |
98 | pTxBuff->pData[pTxBuff->Position++] = 'a' + Address; // Address (a=0; b=1,...) |
97 | pTxBuff->pData[pTxBuff->Position++] = CmdID; // Command |
99 | pTxBuff->pData[pTxBuff->Position++] = CmdID; // Command |
98 | 100 | ||
99 | va_start(ap, numofbuffers); |
101 | va_start(ap, numofbuffers); |
100 | if(numofbuffers) |
102 | if(numofbuffers) |
101 | { |
103 | { |
102 | pdata = va_arg(ap, u8*); |
104 | pdata = va_arg(ap, u8*); |
103 | len = va_arg(ap, int); |
105 | len = va_arg(ap, int); |
104 | ptr = 0; |
106 | ptr = 0; |
105 | numofbuffers--; |
107 | numofbuffers--; |
106 | } |
108 | } |
107 | while(len) |
109 | while(len) |
108 | { |
110 | { |
109 | if(len) |
111 | if(len) |
110 | { |
112 | { |
111 | a = pdata[ptr++]; |
113 | a = pdata[ptr++]; |
112 | len--; |
114 | len--; |
113 | if((!len) && numofbuffers) // try to jump to next buffer |
115 | if((!len) && numofbuffers) // try to jump to next buffer |
114 | { |
116 | { |
115 | pdata = va_arg(ap, u8*); |
117 | pdata = va_arg(ap, u8*); |
116 | len = va_arg(ap, int); |
118 | len = va_arg(ap, int); |
117 | ptr = 0; |
119 | ptr = 0; |
118 | numofbuffers--; |
120 | numofbuffers--; |
119 | } |
121 | } |
120 | } |
122 | } |
121 | else a = 0; |
123 | else a = 0; |
122 | if(len) |
124 | if(len) |
123 | { |
125 | { |
124 | b = pdata[ptr++]; |
126 | b = pdata[ptr++]; |
125 | len--; |
127 | len--; |
126 | if((!len) && numofbuffers) // try to jump to next buffer |
128 | if((!len) && numofbuffers) // try to jump to next buffer |
127 | { |
129 | { |
128 | pdata = va_arg(ap, u8*); |
130 | pdata = va_arg(ap, u8*); |
129 | len = va_arg(ap, int); |
131 | len = va_arg(ap, int); |
130 | ptr = 0; |
132 | ptr = 0; |
131 | numofbuffers--; |
133 | numofbuffers--; |
132 | } |
134 | } |
133 | } |
135 | } |
134 | else b = 0; |
136 | else b = 0; |
135 | if(len) |
137 | if(len) |
136 | { |
138 | { |
137 | c = pdata[ptr++]; |
139 | c = pdata[ptr++]; |
138 | len--; |
140 | len--; |
139 | if((!len) && numofbuffers) // try to jump to next buffer |
141 | if((!len) && numofbuffers) // try to jump to next buffer |
140 | { |
142 | { |
141 | pdata = va_arg(ap, u8*); |
143 | pdata = va_arg(ap, u8*); |
142 | len = va_arg(ap, int); |
144 | len = va_arg(ap, int); |
143 | ptr = 0; |
145 | ptr = 0; |
144 | numofbuffers--; |
146 | numofbuffers--; |
145 | } |
147 | } |
146 | } |
148 | } |
147 | else c = 0; |
149 | else c = 0; |
148 | pTxBuff->pData[pTxBuff->Position++] = '=' + (a >> 2); |
150 | pTxBuff->pData[pTxBuff->Position++] = '=' + (a >> 2); |
149 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4)); |
151 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((a & 0x03) << 4) | ((b & 0xf0) >> 4)); |
150 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6)); |
152 | pTxBuff->pData[pTxBuff->Position++] = '=' + (((b & 0x0f) << 2) | ((c & 0xc0) >> 6)); |
151 | pTxBuff->pData[pTxBuff->Position++] = '=' + ( c & 0x3f); |
153 | pTxBuff->pData[pTxBuff->Position++] = '=' + ( c & 0x3f); |
152 | } |
154 | } |
153 | va_end(ap); |
155 | va_end(ap); |
154 | // add crc |
156 | // add crc |
155 | for(i = 0; i < pTxBuff->Position; i++) |
157 | for(i = 0; i < pTxBuff->Position; i++) |
156 | { |
158 | { |
157 | tmpCRC += pTxBuff->pData[i]; |
159 | tmpCRC += pTxBuff->pData[i]; |
158 | } |
160 | } |
159 | tmpCRC %= 4096; |
161 | tmpCRC %= 4096; |
160 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC / 64; |
162 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC / 64; |
161 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC % 64; |
163 | pTxBuff->pData[pTxBuff->Position++] = '=' + tmpCRC % 64; |
162 | pTxBuff->pData[pTxBuff->Position++] = '\r'; |
164 | pTxBuff->pData[pTxBuff->Position++] = '\r'; |
163 | pTxBuff->DataBytes = pTxBuff->Position; |
165 | pTxBuff->DataBytes = pTxBuff->Position; |
164 | pTxBuff->Position = 0; // reset buffer position for transmision |
166 | pTxBuff->Position = 0; // reset buffer position for transmision |
165 | pTxBuff->Locked = TRUE; // mark as used |
- | |
166 | } // EOF buffer not in use |
167 | } // EOF buffer not in use |
167 | } |
168 | } |
168 | 169 | ||
169 | // typical called in an UART Rx ISR |
170 | // typical called in an UART Rx ISR |
170 | /**************************************************************/ |
171 | /**************************************************************/ |
171 | /* Collect serial frame */ |
172 | /* Collect serial frame */ |
172 | /**************************************************************/ |
173 | /**************************************************************/ |
173 | void MKProtocol_CollectSerialFrame(Buffer_t* pRxBuff, u8 c) |
174 | void MKProtocol_CollectSerialFrame(Buffer_t* pRxBuff, u8 c) |
174 | { |
175 | { |
175 | if(pRxBuff->Locked == FALSE) |
176 | if(pRxBuff->Locked == FALSE) |
176 | { // rx buffer not locked |
177 | { // rx buffer not locked |
177 | if(c == '#') // if syncronisation character is received |
178 | if(c == '#') // if syncronisation character is received |
178 | { |
179 | { |
179 | pRxBuff->Position = 0; // reset buffer |
180 | pRxBuff->Position = 0; // reset buffer |
180 | pRxBuff->pData[pRxBuff->Position++] = c; // copy 1st byte to buffer |
181 | pRxBuff->pData[pRxBuff->Position++] = c; // copy 1st byte to buffer |
181 | pRxBuff->DataBytes = 1; |
182 | pRxBuff->DataBytes = 1; |
182 | } |
183 | } |
183 | else if (pRxBuff->Position < pRxBuff->Size) // rx buffer not full |
184 | else if (pRxBuff->Position < pRxBuff->Size) // rx buffer not full |
184 | { |
185 | { |
185 | if (c != '\r') // no termination character received |
186 | if (c != '\r') // no termination character received |
186 | { |
187 | { |
187 | pRxBuff->pData[pRxBuff->Position++] = c; // copy byte to rxd buffer |
188 | pRxBuff->pData[pRxBuff->Position++] = c; // copy byte to rxd buffer |
188 | pRxBuff->DataBytes++; |
189 | pRxBuff->DataBytes++; |
189 | } |
190 | } |
190 | else // termination character received |
191 | else // termination character received |
191 | { |
192 | { |
192 | // calculate checksum from transmitted data |
193 | // calculate checksum from transmitted data |
193 | u16 crc = 0, i; |
194 | u16 crc = 0, i; |
194 | u8 crc1, crc2; |
195 | u8 crc1, crc2; |
195 | for(i = 0; i < (pRxBuff->Position-2); i++) |
196 | for(i = 0; i < (pRxBuff->Position-2); i++) |
196 | { |
197 | { |
197 | crc += pRxBuff->pData[i]; |
198 | crc += pRxBuff->pData[i]; |
198 | } |
199 | } |
199 | crc %= 4096; |
200 | crc %= 4096; |
200 | crc1 = '=' + crc / 64; |
201 | crc1 = '=' + crc / 64; |
201 | crc2 = '=' + crc % 64; |
202 | crc2 = '=' + crc % 64; |
202 | // compare checksum to transmitted checksum bytes |
203 | // compare checksum to transmitted checksum bytes |
203 | if((crc1 == pRxBuff->pData[pRxBuff->Position-2]) && (crc2 == pRxBuff->pData[pRxBuff->Position-1])) |
204 | if((crc1 == pRxBuff->pData[pRxBuff->Position-2]) && (crc2 == pRxBuff->pData[pRxBuff->Position-1])) |
204 | { // checksum is valid |
205 | { // checksum is valid |
205 | pRxBuff->pData[pRxBuff->Position++] = '\r'; // set termination character |
206 | pRxBuff->pData[pRxBuff->Position++] = '\r'; // set termination character |
206 | pRxBuff->DataBytes = pRxBuff->Position; |
207 | pRxBuff->DataBytes = pRxBuff->Position; |
207 | pRxBuff->Position = 0; |
208 | pRxBuff->Position = 0; |
208 | pRxBuff->Locked = TRUE; // lock the rxd buffer |
209 | pRxBuff->Locked = TRUE; // lock the rxd buffer |
209 | // if 2nd byte is an 'R' start bootloader |
210 | // if 2nd byte is an 'R' start bootloader |
210 | if(pRxBuff->pData[2] == 'R') |
211 | if(pRxBuff->pData[2] == 'R') |
211 | { |
212 | { |
212 | PowerOff(); |
213 | PowerOff(); |
213 | VIC_DeInit(); |
214 | VIC_DeInit(); |
214 | Execute_Bootloader(); // Reset-Commando - Bootloader starten |
215 | Execute_Bootloader(); // Reset-Commando - Bootloader starten |
215 | } |
216 | } |
216 | } // eof checksum valid |
217 | } // eof checksum valid |
217 | else |
218 | else |
218 | { // checksum is invalid |
219 | { // checksum is invalid |
219 | Buffer_Clear(pRxBuff); |
220 | Buffer_Clear(pRxBuff); |
220 | } // eof checksum invalid |
221 | } // eof checksum invalid |
221 | } // eof termination character received |
222 | } // eof termination character received |
222 | } // rxd buffer not full |
223 | } // rxd buffer not full |
223 | else // rxd buffer overrun |
224 | else // rxd buffer overrun |
224 | { |
225 | { |
225 | Buffer_Clear(pRxBuff); |
226 | Buffer_Clear(pRxBuff); |
226 | } // eof rxd buffer overrrun |
227 | } // eof rxd buffer overrrun |
227 | } |
228 | } |
228 | } |
229 | } |
229 | 230 | ||
230 | /**************************************************************/ |
231 | /**************************************************************/ |
231 | /* Decode data */ |
232 | /* Decode data */ |
232 | /**************************************************************/ |
233 | /**************************************************************/ |
233 | void MKProtocol_DecodeSerialFrame(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
234 | void MKProtocol_DecodeSerialFrame(Buffer_t* pRxBuff, SerialMsg_t* pSerialMsg) |
234 | { |
235 | { |
235 | u8 a,b,c,d; |
236 | u8 a,b,c,d; |
236 | u8 x,y,z; |
237 | u8 x,y,z; |
237 | u8 ptrIn = 3; // start with first data byte in rx buffer |
238 | u8 ptrIn = 3; // start with first data byte in rx buffer |
238 | u8 ptrOut = 3; |
239 | u8 ptrOut = 3; |
239 | u8 len = pRxBuff->DataBytes - 6; // must be a multiple of 4 (3 bytes at begin and 3 bytes at end are no payload ) |
240 | u8 len = pRxBuff->DataBytes - 6; // must be a multiple of 4 (3 bytes at begin and 3 bytes at end are no payload ) |
240 | while(len) |
241 | while(len) |
241 | { |
242 | { |
242 | a = pRxBuff->pData[ptrIn++] - '='; |
243 | a = pRxBuff->pData[ptrIn++] - '='; |
243 | b = pRxBuff->pData[ptrIn++] - '='; |
244 | b = pRxBuff->pData[ptrIn++] - '='; |
244 | c = pRxBuff->pData[ptrIn++] - '='; |
245 | c = pRxBuff->pData[ptrIn++] - '='; |
245 | d = pRxBuff->pData[ptrIn++] - '='; |
246 | d = pRxBuff->pData[ptrIn++] - '='; |
246 | //if(ptrIn > ReceivedBytes - 3) break; |
247 | //if(ptrIn > ReceivedBytes - 3) break; |
247 | 248 | ||
248 | x = (a << 2) | (b >> 4); |
249 | x = (a << 2) | (b >> 4); |
249 | y = ((b & 0x0f) << 4) | (c >> 2); |
250 | y = ((b & 0x0f) << 4) | (c >> 2); |
250 | z = ((c & 0x03) << 6) | d; |
251 | z = ((c & 0x03) << 6) | d; |
251 | 252 | ||
252 | if(len--) pRxBuff->pData[ptrOut++] = x; else break; |
253 | if(len--) pRxBuff->pData[ptrOut++] = x; else break; |
253 | if(len--) pRxBuff->pData[ptrOut++] = y; else break; |
254 | if(len--) pRxBuff->pData[ptrOut++] = y; else break; |
254 | if(len--) pRxBuff->pData[ptrOut++] = z; else break; |
255 | if(len--) pRxBuff->pData[ptrOut++] = z; else break; |
255 | } |
256 | } |
256 | pSerialMsg->Address = pRxBuff->pData[1] - 'a'; |
257 | pSerialMsg->Address = pRxBuff->pData[1] - 'a'; |
257 | pSerialMsg->CmdID = pRxBuff->pData[2]; |
258 | pSerialMsg->CmdID = pRxBuff->pData[2]; |
258 | pSerialMsg->pData = &(pRxBuff->pData[3]); |
259 | pSerialMsg->pData = &(pRxBuff->pData[3]); |
259 | pSerialMsg->DataLen = ptrOut - 3; // return number of data in bytes |
260 | pSerialMsg->DataLen = ptrOut - 3; // return number of data in bytes |
260 | pRxBuff->Position = 0; |
261 | pRxBuff->Position = 0; |
261 | pRxBuff->DataBytes = ptrOut; |
262 | pRxBuff->DataBytes = ptrOut; |
262 | } |
263 | } |
263 | 264 |