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/*#######################################################################################*/
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/*#######################################################################################*/
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/* !!! THIS IS NOT FREE SOFTWARE !!!                                                     */
2
/* !!! THIS IS NOT FREE SOFTWARE !!!                                                     */
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/*#######################################################################################*/
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/*#######################################################################################*/
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
4
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
5
// + www.MikroKopter.com
5
// + www.MikroKopter.com
6
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
6
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
7
// + Software Nutzungsbedingungen (english version: see below)
7
// + Software Nutzungsbedingungen (english version: see below)
8
// + der Fa. HiSystems GmbH, Flachsmeerstrasse 2, 26802 Moormerland - nachfolgend Lizenzgeber genannt -
8
// + der Fa. HiSystems GmbH, Flachsmeerstrasse 2, 26802 Moormerland - nachfolgend Lizenzgeber genannt -
9
// + Der Lizenzgeber räumt dem Kunden ein nicht-ausschließliches, zeitlich und räumlich* unbeschränktes Recht ein, die im den
9
// + Der Lizenzgeber räumt dem Kunden ein nicht-ausschließliches, zeitlich und räumlich* unbeschränktes Recht ein, die im den
10
// + Mikrocontroller verwendete Firmware für die Hardware Flight-Ctrl, Navi-Ctrl, BL-Ctrl, MK3Mag & PC-Programm MikroKopter-Tool 
10
// + Mikrocontroller verwendete Firmware für die Hardware Flight-Ctrl, Navi-Ctrl, BL-Ctrl, MK3Mag & PC-Programm MikroKopter-Tool 
11
// + - nachfolgend Software genannt - nur für private Zwecke zu nutzen.
11
// + - nachfolgend Software genannt - nur für private Zwecke zu nutzen.
12
// + Der Einsatz dieser Software ist nur auf oder mit Produkten des Lizenzgebers zulässig.
12
// + Der Einsatz dieser Software ist nur auf oder mit Produkten des Lizenzgebers zulässig.
13
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
13
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
14
// + Die vom Lizenzgeber gelieferte Software ist urheberrechtlich geschützt. Alle Rechte an der Software sowie an sonstigen im
14
// + Die vom Lizenzgeber gelieferte Software ist urheberrechtlich geschützt. Alle Rechte an der Software sowie an sonstigen im
15
// + Rahmen der Vertragsanbahnung und Vertragsdurchführung überlassenen Unterlagen stehen im Verhältnis der Vertragspartner ausschließlich dem Lizenzgeber zu.
15
// + Rahmen der Vertragsanbahnung und Vertragsdurchführung überlassenen Unterlagen stehen im Verhältnis der Vertragspartner ausschließlich dem Lizenzgeber zu.
16
// + Die in der Software enthaltenen Copyright-Vermerke, Markenzeichen, andere Rechtsvorbehalte, Seriennummern sowie
16
// + Die in der Software enthaltenen Copyright-Vermerke, Markenzeichen, andere Rechtsvorbehalte, Seriennummern sowie
17
// + sonstige der Programmidentifikation dienenden Merkmale dürfen vom Kunden nicht verändert oder unkenntlich gemacht werden.
17
// + sonstige der Programmidentifikation dienenden Merkmale dürfen vom Kunden nicht verändert oder unkenntlich gemacht werden.
18
// + Der Kunde trifft angemessene Vorkehrungen für den sicheren Einsatz der Software. Er wird die Software gründlich auf deren
18
// + Der Kunde trifft angemessene Vorkehrungen für den sicheren Einsatz der Software. Er wird die Software gründlich auf deren
19
// + Verwendbarkeit zu dem von ihm beabsichtigten Zweck testen, bevor er diese operativ einsetzt.
19
// + Verwendbarkeit zu dem von ihm beabsichtigten Zweck testen, bevor er diese operativ einsetzt.
20
// + Die Haftung des Lizenzgebers wird - soweit gesetzlich zulässig - begrenzt in Höhe des typischen und vorhersehbaren
20
// + Die Haftung des Lizenzgebers wird - soweit gesetzlich zulässig - begrenzt in Höhe des typischen und vorhersehbaren
21
// + Schadens. Die gesetzliche Haftung bei Personenschäden und nach dem Produkthaftungsgesetz bleibt unberührt. Dem Lizenzgeber steht jedoch der Einwand 
21
// + Schadens. Die gesetzliche Haftung bei Personenschäden und nach dem Produkthaftungsgesetz bleibt unberührt. Dem Lizenzgeber steht jedoch der Einwand 
22
// + des Mitverschuldens offen.
22
// + des Mitverschuldens offen.
23
// + Der Kunde trifft angemessene Vorkehrungen für den Fall, dass die Software ganz oder teilweise nicht ordnungsgemäß arbeitet.
23
// + Der Kunde trifft angemessene Vorkehrungen für den Fall, dass die Software ganz oder teilweise nicht ordnungsgemäß arbeitet.
24
// + Er wird die Software gründlich auf deren Verwendbarkeit zu dem von ihm beabsichtigten Zweck testen, bevor er diese operativ einsetzt.
24
// + Er wird die Software gründlich auf deren Verwendbarkeit zu dem von ihm beabsichtigten Zweck testen, bevor er diese operativ einsetzt.
25
// + Der Kunde wird er seine Daten vor Einsatz der Software nach dem Stand der Technik sichern.
25
// + Der Kunde wird er seine Daten vor Einsatz der Software nach dem Stand der Technik sichern.
26
// + Der Kunde ist darüber unterrichtet, dass der Lizenzgeber seine Daten im zur Vertragsdurchführung erforderlichen Umfang
26
// + Der Kunde ist darüber unterrichtet, dass der Lizenzgeber seine Daten im zur Vertragsdurchführung erforderlichen Umfang
27
// + und auf Grundlage der Datenschutzvorschriften erhebt, speichert, verarbeitet und, sofern notwendig, an Dritte übermittelt.
27
// + und auf Grundlage der Datenschutzvorschriften erhebt, speichert, verarbeitet und, sofern notwendig, an Dritte übermittelt.
28
// + *) Die räumliche Nutzung bezieht sich nur auf den Einsatzort, nicht auf die Reichweite der programmierten Software.
28
// + *) Die räumliche Nutzung bezieht sich nur auf den Einsatzort, nicht auf die Reichweite der programmierten Software.
29
// + #### ENDE DER NUTZUNGSBEDINGUNGEN ####'
29
// + #### ENDE DER NUTZUNGSBEDINGUNGEN ####'
30
// +  Hinweis: Informationen über erweiterte Nutzungsrechte (wie z.B. Nutzung für nicht-private Zwecke) sind auf Anfrage per Email an info(@)hisystems.de verfügbar.
30
// +  Hinweis: Informationen über erweiterte Nutzungsrechte (wie z.B. Nutzung für nicht-private Zwecke) sind auf Anfrage per Email an info(@)hisystems.de verfügbar.
31
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
31
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
32
// + Software LICENSING TERMS
32
// + Software LICENSING TERMS
33
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
33
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
34
// + of HiSystems GmbH, Flachsmeerstrasse 2, 26802 Moormerland, Germany - the Licensor -
34
// + of HiSystems GmbH, Flachsmeerstrasse 2, 26802 Moormerland, Germany - the Licensor -
35
// + The Licensor grants the customer a non-exclusive license to use the microcontroller firmware of the Flight-Ctrl, Navi-Ctrl, BL-Ctrl, and MK3Mag hardware 
35
// + The Licensor grants the customer a non-exclusive license to use the microcontroller firmware of the Flight-Ctrl, Navi-Ctrl, BL-Ctrl, and MK3Mag hardware 
36
// + (the Software) exclusively for private purposes. The License is unrestricted with respect to time and territory*.
36
// + (the Software) exclusively for private purposes. The License is unrestricted with respect to time and territory*.
37
// + The Software may only be used with the Licensor's products.
37
// + The Software may only be used with the Licensor's products.
38
// + The Software provided by the Licensor is protected by copyright. With respect to the relationship between the parties to this
38
// + The Software provided by the Licensor is protected by copyright. With respect to the relationship between the parties to this
39
// + agreement, all rights pertaining to the Software and other documents provided during the preparation and execution of this
39
// + agreement, all rights pertaining to the Software and other documents provided during the preparation and execution of this
40
// + agreement shall be the property of the Licensor.
40
// + agreement shall be the property of the Licensor.
41
// + The information contained in the Software copyright notices, trademarks, other legal reservations, serial numbers and other
41
// + The information contained in the Software copyright notices, trademarks, other legal reservations, serial numbers and other
42
// + features that can be used to identify the program may not be altered or defaced by the customer.
42
// + features that can be used to identify the program may not be altered or defaced by the customer.
43
// + The customer shall be responsible for taking reasonable precautions
43
// + The customer shall be responsible for taking reasonable precautions
44
// + for the safe use of the Software. The customer shall test the Software thoroughly regarding its suitability for the
44
// + for the safe use of the Software. The customer shall test the Software thoroughly regarding its suitability for the
45
// + intended purpose before implementing it for actual operation. The Licensor's liability shall be limited to the extent of typical and
45
// + intended purpose before implementing it for actual operation. The Licensor's liability shall be limited to the extent of typical and
46
// + foreseeable damage to the extent permitted by law, notwithstanding statutory liability for bodily injury and product
46
// + foreseeable damage to the extent permitted by law, notwithstanding statutory liability for bodily injury and product
47
// + liability. However, the Licensor shall be entitled to the defense of contributory negligence.
47
// + liability. However, the Licensor shall be entitled to the defense of contributory negligence.
48
// + The customer will take adequate precautions in the case, that the software is not working properly. The customer will test
48
// + The customer will take adequate precautions in the case, that the software is not working properly. The customer will test
49
// + the software for his purpose before any operational usage. The customer will backup his data before using the software.
49
// + the software for his purpose before any operational usage. The customer will backup his data before using the software.
50
// + The customer understands that the Licensor collects, stores and processes, and, where required, forwards, customer data
50
// + The customer understands that the Licensor collects, stores and processes, and, where required, forwards, customer data
51
// + to third parties to the extent necessary for executing the agreement, subject to applicable data protection and privacy regulations.
51
// + to third parties to the extent necessary for executing the agreement, subject to applicable data protection and privacy regulations.
52
// + *) The territory aspect only refers to the place where the Software is used, not its programmed range.
52
// + *) The territory aspect only refers to the place where the Software is used, not its programmed range.
53
// + #### END OF LICENSING TERMS ####
53
// + #### END OF LICENSING TERMS ####
54
// + Note: For information on license extensions (e.g. commercial use), please contact us at info(@)hisystems.de.
54
// + Note: For information on license extensions (e.g. commercial use), please contact us at info(@)hisystems.de.
55
// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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#include <stdio.h>
56
#include <stdio.h>
57
#include <string.h>
57
#include <string.h>
58
#include "91x_lib.h"
58
#include "91x_lib.h"
59
#include "mk3mag.h"
59
#include "mk3mag.h"
60
#include "i2c.h"
60
#include "i2c.h"
-
 
61
#include "i2c0.h"
61
#include "timer1.h"
62
#include "timer1.h"
62
#include "led.h"
63
#include "led.h"
63
#include "main.h"
64
#include "main.h"
64
#include "uart1.h"
65
#include "uart1.h"
65
#include "compass.h"
66
#include "compass.h"
66
#include "spi_slave.h"
67
#include "spi_slave.h"
67
 
68
 
68
#define MK3MAG_SLAVE_ADDRESS            0x50  // i2C slave address
69
#define MK3MAG_SLAVE_ADDRESS            0x50  // i2C slave address
69
 
70
 
70
u8 MK3MAG_Present = 0;
71
u8 MK3MAG_Present = 0;
71
 
72
 
72
typedef struct
73
typedef struct
73
{
74
{
74
  s16 Nick;
75
  s16 Nick;
75
  s16 Roll;
76
  s16 Roll;
76
} __attribute__((packed)) MK3MAG_WriteAttitude_t;
77
} __attribute__((packed)) MK3MAG_WriteAttitude_t;
77
 
78
 
78
typedef struct
79
typedef struct
79
{
80
{
80
  u8 Major;
81
  u8 Major;
81
  u8 Minor;
82
  u8 Minor;
82
  u8 Patch;
83
  u8 Patch;
83
  u8 Compatible;
84
  u8 Compatible;
84
} __attribute__((packed)) MK3MAG_Version_t;
85
} __attribute__((packed)) MK3MAG_Version_t;
85
 
86
 
86
typedef struct
87
typedef struct
87
{
88
{
88
  u8 CalByte;
89
  u8 CalByte;
89
  u8 Dummy1;
90
  u8 Dummy1;
90
  u8 Dummy2;
91
  u8 Dummy2;
91
} __attribute__((packed)) MK3MAG_Cal_t;
92
} __attribute__((packed)) MK3MAG_Cal_t;
92
 
93
 
93
// Transfer buffers
94
// Transfer buffers
94
volatile MK3MAG_WriteAttitude_t         MK3MAG_WriteAttitude;
95
volatile MK3MAG_WriteAttitude_t         MK3MAG_WriteAttitude;
95
volatile MK3MAG_Version_t                       MK3MAG_Version;
96
volatile MK3MAG_Version_t                       MK3MAG_Version;
96
volatile MK3MAG_Cal_t                           MK3MAG_WriteCal;
97
volatile MK3MAG_Cal_t                           MK3MAG_WriteCal;
97
volatile MK3MAG_Cal_t                           MK3MAG_ReadCal;
98
volatile MK3MAG_Cal_t                           MK3MAG_ReadCal;
98
 
99
 
99
// -------------------------------------------------------------------------------
100
// -------------------------------------------------------------------------------
100
// the calculation of the MK3MAG packet checksum
101
// the calculation of the MK3MAG packet checksum
101
 
102
 
102
// calculate the crc of  bytecount bytes in buffer
103
// calculate the crc of  bytecount bytes in buffer
103
u8 MK3MAG_CalcCRC(u8* pBuffer, u8 bytecount)
104
u8 MK3MAG_CalcCRC(u8* pBuffer, u8 bytecount)
104
{
105
{
105
        u8 i, crc = 0;
106
        u8 i, crc = 0;
106
        for(i=0; i < bytecount; i++)
107
        for(i=0; i < bytecount; i++)
107
        {
108
        {
108
                crc += pBuffer[i];
109
                crc += pBuffer[i];
109
        }
110
        }
110
        crc = ~crc;
111
        crc = ~crc;
111
        return crc;
112
        return crc;
112
}
113
}
113
 
114
 
114
// assuming the last byte in buffer is the crc byte
115
// assuming the last byte in buffer is the crc byte
115
u8 MK3MAG_CheckCRC(u8* pBuffer, u8 BuffLen)
116
u8 MK3MAG_CheckCRC(u8* pBuffer, u8 BuffLen)
116
{
117
{
117
        u8 crc = 0, retval = 0;
118
        u8 crc = 0, retval = 0;
118
        if(BuffLen == 0) return(retval);
119
        if(BuffLen == 0) return(retval);
119
        crc = MK3MAG_CalcCRC(pBuffer, BuffLen-1);
120
        crc = MK3MAG_CalcCRC(pBuffer, BuffLen-1);
120
        if(crc == pBuffer[BuffLen-1])
121
        if(crc == pBuffer[BuffLen-1])
121
        {
122
        {
122
                retval = 1;
123
                retval = 1;
123
                DebugOut.Analog[15]++; // count mk3mag ok
124
                DebugOut.Analog[15]++; // count mk3mag ok
124
        }
125
        }
125
        else
126
        else
126
        {
127
        {
127
                retval = 0;
128
                retval = 0;
128
                DebugOut.Analog[14]++; // count mk3mag crc error
129
                DebugOut.Analog[14]++; // count mk3mag crc error
129
        }
130
        }
130
        return(retval);
131
        return(retval);
131
}
132
}
132
 
133
 
133
// -------------------------------------------------------------------------------
134
// -------------------------------------------------------------------------------
134
// the I2C rx data handler functions
135
// the I2C rx data handler functions
135
 
136
 
136
// rx data handler for version info request
137
// rx data handler for version info request
137
void MK3MAG_UpdateVersion(u8* pRxBuffer, u8 RxBufferSize)
138
void MK3MAG_UpdateVersion(u8* pRxBuffer, u8 RxBufferSize)
138
{       // if crc is ok and number of byte are matching
139
{       // if crc is ok and number of byte are matching
139
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MK3MAG_Version)+1)) )
140
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MK3MAG_Version)+1)) )
140
        {
141
        {
141
                memcpy((u8 *)&MK3MAG_Version, pRxBuffer, sizeof(MK3MAG_Version));
142
                memcpy((u8 *)&MK3MAG_Version, pRxBuffer, sizeof(MK3MAG_Version));
142
        }                
143
        }                
143
}
144
}
144
 
145
 
145
// rx data handler for calibration request
146
// rx data handler for calibration request
146
void MK3MAG_UpdateCalibration(u8* pRxBuffer, u8 RxBufferSize)
147
void MK3MAG_UpdateCalibration(u8* pRxBuffer, u8 RxBufferSize)
147
{       // if crc is ok and number of byte are matching
148
{       // if crc is ok and number of byte are matching
148
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MK3MAG_ReadCal)+1)) )
149
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MK3MAG_ReadCal)+1)) )
149
        {
150
        {
150
                memcpy((u8 *)&MK3MAG_ReadCal, pRxBuffer, sizeof(MK3MAG_ReadCal));
151
                memcpy((u8 *)&MK3MAG_ReadCal, pRxBuffer, sizeof(MK3MAG_ReadCal));
151
        }                        
152
        }                        
152
}
153
}
153
 
154
 
154
// rx data handler for magnetic vector request
155
// rx data handler for magnetic vector request
155
void MK3MAG_UpdateMagVector(u8* pRxBuffer, u8 RxBufferSize)
156
void MK3MAG_UpdateMagVector(u8* pRxBuffer, u8 RxBufferSize)
156
{       // if crc is ok and number of byte are matching
157
{       // if crc is ok and number of byte are matching
157
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MagVector)+1)) )
158
        if(MK3MAG_CheckCRC(pRxBuffer, RxBufferSize) && (RxBufferSize == (sizeof(MagVector)+1)) )
158
        {
159
        {
159
                s16vec_t *pMagVector = (s16vec_t*)pRxBuffer;
160
                s16vec_t *pMagVector = (s16vec_t*)pRxBuffer;
160
                MagVector.X = pMagVector->Y;
161
                MagVector.X = pMagVector->Y;
161
                MagVector.Y = pMagVector->X;
162
                MagVector.Y = pMagVector->X;
162
                MagVector.Z = -pMagVector->Z;    
163
                MagVector.Z = -pMagVector->Z;    
163
                Compass_CalcHeading();
164
                Compass_CalcHeading();
164
        }                        
165
        }                        
165
}
166
}
166
 
167
 
167
//----------------------------------------------------------------
168
//----------------------------------------------------------------
168
#define MK3MAG_CMD_VERSION              0x01
169
#define MK3MAG_CMD_VERSION              0x01
169
#define MK3MAG_CMD_READ_MAGVECT         0x02
170
#define MK3MAG_CMD_READ_MAGVECT         0x02
170
#define MK3MAG_CMD_WRITE_CAL            0x04
171
#define MK3MAG_CMD_WRITE_CAL            0x04
-
 
172
 
171
 
173
// use I2C1 for communication
172
void MK3MAG_SendCommand(u8 command)
174
void MK3MAG_SendCommandI2C1(u8 command)
173
{
175
{
174
        // try to catch the I2C buffer
176
        // try to catch the I2C buffer
175
        if(I2C_LockBuffer(0))
177
        if(I2C_LockBuffer(0))
176
        {
178
        {
177
                u16 TxBytes = 0;
179
                u16 TxBytes = 0;
178
                u16 RxBytes = 0;
180
                u16 RxBytes = 0;
179
                I2C_pRxHandler_t pRxHandlerFunc = NULL;
181
                I2C_pRxHandler_t pRxHandlerFunc = NULL;
180
               
182
               
181
                // update current command id
183
                // update current command id
182
                I2C_Buffer[TxBytes++] = command;
184
                I2C_Buffer[TxBytes++] = command;
183
 
185
 
184
                // set pointers to data area with respect to the command id
186
                // set pointers to data area with respect to the command id
185
                switch (command)
187
                switch (command)
186
                {
188
                {
187
                        case MK3MAG_CMD_VERSION:
189
                        case MK3MAG_CMD_VERSION:
188
                                RxBytes = sizeof(MK3MAG_Version)+1;
190
                                RxBytes = sizeof(MK3MAG_Version)+1;
189
                                pRxHandlerFunc = &MK3MAG_UpdateVersion;
191
                                pRxHandlerFunc = &MK3MAG_UpdateVersion;
190
                                break;
192
                                break;
191
                        case MK3MAG_CMD_WRITE_CAL:
193
                        case MK3MAG_CMD_WRITE_CAL:
192
                                RxBytes = sizeof(MK3MAG_ReadCal)+1;
194
                                RxBytes = sizeof(MK3MAG_ReadCal)+1;
193
                                pRxHandlerFunc = &MK3MAG_UpdateCalibration;
195
                                pRxHandlerFunc = &MK3MAG_UpdateCalibration;
194
                                memcpy((u8*)I2C_Buffer+1, (u8*)&MK3MAG_WriteCal, sizeof(MK3MAG_WriteCal));
196
                                memcpy((u8*)I2C_Buffer+1, (u8*)&MK3MAG_WriteCal, sizeof(MK3MAG_WriteCal));
195
                                TxBytes += sizeof(MK3MAG_WriteCal);
197
                                TxBytes += sizeof(MK3MAG_WriteCal);
196
                                break;
198
                                break;
197
                        case MK3MAG_CMD_READ_MAGVECT:
199
                        case MK3MAG_CMD_READ_MAGVECT:
198
                                RxBytes = sizeof(MagVector)+1;
200
                                RxBytes = sizeof(MagVector)+1;
199
                                pRxHandlerFunc = &MK3MAG_UpdateMagVector;
201
                                pRxHandlerFunc = &MK3MAG_UpdateMagVector;
200
                                break;
202
                                break;
201
                        default: // unknown command id
203
                        default: // unknown command id
202
                                RxBytes = 0;
204
                                RxBytes = 0;
203
                                pRxHandlerFunc = NULL;
205
                                pRxHandlerFunc = NULL;
204
                                break;
206
                                break;
205
                }
207
                }
206
                // update packet checksum
208
                // update packet checksum
207
                I2C_Buffer[TxBytes] = MK3MAG_CalcCRC((u8*)I2C_Buffer, TxBytes);
209
                I2C_Buffer[TxBytes] = MK3MAG_CalcCRC((u8*)I2C_Buffer, TxBytes);
208
                TxBytes++;
210
                TxBytes++;
209
                // initiate I2C transmission
211
                // initiate I2C transmission
210
                I2C_Transmission(MK3MAG_SLAVE_ADDRESS, TxBytes, pRxHandlerFunc, RxBytes);
212
                I2C_Transmission(MK3MAG_SLAVE_ADDRESS, TxBytes, pRxHandlerFunc, RxBytes);
211
        } // EOF I2C_State == I2C_IDLE  
213
        } // EOF I2C_State == I2C_IDLE  
212
}
214
}
-
 
215
 
-
 
216
// use I2C0 for communication
-
 
217
void MK3MAG_SendCommandI2C0(u8 command)
-
 
218
{
-
 
219
        // try to catch the I2C buffer
-
 
220
        if(I2C0_LockBuffer(0))
-
 
221
        {
-
 
222
                u16 TxBytes = 0;
-
 
223
                u16 RxBytes = 0;
-
 
224
                I2C_pRxHandler_t pRxHandlerFunc = NULL;
-
 
225
               
-
 
226
                // update current command id
-
 
227
                I2C0_Buffer[TxBytes++] = command;
-
 
228
 
-
 
229
                // set pointers to data area with respect to the command id
-
 
230
                switch (command)
-
 
231
                {
-
 
232
                        case MK3MAG_CMD_VERSION:
-
 
233
                                RxBytes = sizeof(MK3MAG_Version)+1;
-
 
234
                                pRxHandlerFunc = &MK3MAG_UpdateVersion;
-
 
235
                                break;
-
 
236
                        case MK3MAG_CMD_WRITE_CAL:
-
 
237
                                RxBytes = sizeof(MK3MAG_ReadCal)+1;
-
 
238
                                pRxHandlerFunc = &MK3MAG_UpdateCalibration;
-
 
239
                                memcpy((u8*)I2C0_Buffer+1, (u8*)&MK3MAG_WriteCal, sizeof(MK3MAG_WriteCal));
-
 
240
                                TxBytes += sizeof(MK3MAG_WriteCal);
-
 
241
                                break;
-
 
242
                        case MK3MAG_CMD_READ_MAGVECT:
-
 
243
                                RxBytes = sizeof(MagVector)+1;
-
 
244
                                pRxHandlerFunc = &MK3MAG_UpdateMagVector;
-
 
245
                                break;
-
 
246
                        default: // unknown command id
-
 
247
                                RxBytes = 0;
-
 
248
                                pRxHandlerFunc = NULL;
-
 
249
                                break;
-
 
250
                }
-
 
251
                // update packet checksum
-
 
252
                I2C0_Buffer[TxBytes] = MK3MAG_CalcCRC((u8*)I2C0_Buffer, TxBytes);
-
 
253
                TxBytes++;
-
 
254
                // initiate I2C transmission
-
 
255
                I2C0_Transmission(MK3MAG_SLAVE_ADDRESS, TxBytes, pRxHandlerFunc, RxBytes);
-
 
256
        } // EOF I2C_State == I2C_IDLE  
-
 
257
}
-
 
258
 
-
 
259
void MK3MAG_SendCommand(u8 command)
-
 
260
{
-
 
261
 // MK3MAG_SendCommandI2C1(command);
-
 
262
  MK3MAG_SendCommandI2C0(command);
213
 
263
}
214
 
264
 
215
//----------------------------------------------------------------
265
//----------------------------------------------------------------
216
u8 MK3MAG_Init(void)
266
u8 MK3MAG_Init(void)
217
{
267
{
218
        u8 msg[64];
268
        u8 msg[64];
219
        u8 repeat;
269
        u8 repeat;
220
        u32 timeout;
270
        u32 timeout;
221
       
271
       
222
        MK3MAG_Present = 0;
272
        MK3MAG_Present = 0;
223
 
273
 
224
        MK3MAG_Version.Major = 0xFF;
274
        MK3MAG_Version.Major = 0xFF;
225
        MK3MAG_Version.Minor = 0xFF;
275
        MK3MAG_Version.Minor = 0xFF;
226
        MK3MAG_Version.Patch = 0xFF;
276
        MK3MAG_Version.Patch = 0xFF;
227
        MK3MAG_Version.Compatible = 0xFF;
277
        MK3MAG_Version.Compatible = 0xFF;
228
 
278
 
229
        Compass_Heading = -1;
279
        Compass_Heading = -1;
230
 
280
 
231
        // polling of version info
281
        // polling of version info
232
        repeat = 0;
282
        repeat = 0;
233
        do
283
        do
234
        {
284
        {
235
                MK3MAG_SendCommand(MK3MAG_CMD_VERSION);
285
                MK3MAG_SendCommand(MK3MAG_CMD_VERSION);
236
                if(Version_HW > 11) timeout = SetDelay(100);
286
                if(Version_HW > 11) timeout = SetDelay(100);
237
                else timeout = SetDelay(250);
287
                else timeout = SetDelay(250);
238
 
288
 
239
                do
289
                do
240
                {
290
                {
241
                        if (MK3MAG_Version.Major != 0xFF) break; // break loop on success
291
                        if (MK3MAG_Version.Major != 0xFF) break; // break loop on success
242
                }while (!CheckDelay(timeout));
292
                }while (!CheckDelay(timeout));
243
                UART1_PutString(".");
293
                UART1_PutString(".");
244
                repeat++;
294
                repeat++;
245
        }while ((MK3MAG_Version.Major == 0xFF) && (repeat < 12)); // 12*250ms=3s
295
        }while ((MK3MAG_Version.Major == 0xFF) && (repeat < 12)); // 12*250ms=3s
246
        // if we got it
296
        // if we got it
247
        if (MK3MAG_Version.Major != 0xFF)
297
        if (MK3MAG_Version.Major != 0xFF)
248
        {
298
        {
249
                sprintf(msg, " MK3MAG V%d.%d%c", MK3MAG_Version.Major, MK3MAG_Version.Minor, 'a' + MK3MAG_Version.Patch);
299
                sprintf(msg, " MK3MAG V%d.%d%c", MK3MAG_Version.Major, MK3MAG_Version.Minor, 'a' + MK3MAG_Version.Patch);
250
                UART1_PutString(msg);
300
                UART1_PutString(msg);
251
                if(MK3MAG_Version.Compatible != MK3MAG_I2C_COMPATIBLE)
301
                if(MK3MAG_Version.Compatible != MK3MAG_I2C_COMPATIBLE)
252
                {
302
                {
253
                        UART1_PutString("\n\r MK3MAG not compatible!");
303
                        UART1_PutString("\n\r MK3MAG not compatible!");
254
                        UART_VersionInfo.HardwareError[0] |= NC_ERROR0_COMPASS_INCOMPATIBLE;
304
                        UART_VersionInfo.HardwareError[0] |= NC_ERROR0_COMPASS_INCOMPATIBLE;
255
                        LED_RED_ON;
305
                        LED_RED_ON;
256
                }
306
                }
257
                else
307
                else
258
                {       // version ok
308
                {       // version ok
259
                        MK3MAG_Present = 1;
309
                        MK3MAG_Present = 1;
260
                }
310
                }
261
        }
311
        }
262
        return(MK3MAG_Present);
312
        return(MK3MAG_Present);
263
}
313
}
264
 
314
 
265
//----------------------------------------------------------------
315
//----------------------------------------------------------------
266
void MK3MAG_Update(void)
316
void MK3MAG_Update(void)
267
{
317
{
268
        static u32 TimerUpdate = 0;
318
        static u32 TimerUpdate = 0;
269
        static s16 x_max,y_max,z_max,x_min,y_min,z_min;
319
        static s16 x_max,y_max,z_max,x_min,y_min,z_min;
270
        static u8 last_state,speak = 0;
320
        static u8 last_state,speak = 0;
271
        u8 msg[64];
321
        u8 msg[64];
272
        u16 MinCaclibration = 500;
322
        u16 MinCaclibration = 500;
273
 
323
 
274
        if( (I2C_State == I2C_STATE_OFF) || !MK3MAG_Present ) return;
324
        if( (I2C_State == I2C_STATE_OFF) || !MK3MAG_Present ) return;
275
       
325
       
276
        if(CheckDelay(TimerUpdate))
326
        if(CheckDelay(TimerUpdate))
277
        {
327
        {
278
                // check for incomming compass calibration request
328
                // check for incomming compass calibration request
279
                Compass_UpdateCalState();
329
                Compass_UpdateCalState();
280
                MK3MAG_WriteCal.CalByte = Compass_CalState;
330
                MK3MAG_WriteCal.CalByte = Compass_CalState;
281
       
331
       
282
                if(MK3MAG_ReadCal.CalByte != MK3MAG_WriteCal.CalByte)
332
                if(MK3MAG_ReadCal.CalByte != MK3MAG_WriteCal.CalByte)
283
                {       // send new calibration state
333
                {       // send new calibration state
284
                        MK3MAG_SendCommand(MK3MAG_CMD_WRITE_CAL);
334
                        MK3MAG_SendCommand(MK3MAG_CMD_WRITE_CAL);
285
                }
335
                }
286
                else
336
                else
287
                {       // calibration state matches
337
                {       // calibration state matches
288
                        MK3MAG_SendCommand(MK3MAG_CMD_READ_MAGVECT); // initiate magvector transfer
338
                        MK3MAG_SendCommand(MK3MAG_CMD_READ_MAGVECT); // initiate magvector transfer
289
               
339
               
290
                        switch(Compass_CalState)
340
                        switch(Compass_CalState)
291
                        {
341
                        {
292
                                case 1:
342
                                case 1:
293
                                    if(last_state != Compass_CalState)
343
                                    if(last_state != Compass_CalState)
294
                                         {
344
                                         {
295
                                          UART1_PutString("\r\nMK3Mag calibration\n\r");
345
                                          UART1_PutString("\r\nMK3Mag calibration\n\r");
296
                                      if(EarthMagneticStrengthTheoretic)
346
                                      if(EarthMagneticStrengthTheoretic)
297
                                                {
347
                                                {
298
                                                  MinCaclibration = (MinCaclibration * EarthMagneticStrengthTheoretic) / 50;
348
                                                  MinCaclibration = (MinCaclibration * EarthMagneticStrengthTheoretic) / 50;
299
                                                  sprintf(msg, "Earth field on your location should be: %iuT\r\n",EarthMagneticStrengthTheoretic);
349
                                                  sprintf(msg, "Earth field on your location should be: %iuT\r\n",EarthMagneticStrengthTheoretic);
300
                                                  UART1_PutString(msg);
350
                                                  UART1_PutString(msg);
301
                                                 }
351
                                                 }
302
                                           else UART1_PutString("without GPS\n\r");
352
                                           else UART1_PutString("without GPS\n\r");
303
                                         }
353
                                         }
304
                                        x_max = -30000; y_max = -30000; z_max = -30000;
354
                                        x_max = -30000; y_max = -30000; z_max = -30000;
305
                                        x_min = 30000; y_min = 30000; z_min = 30000;
355
                                        x_min = 30000; y_min = 30000; z_min = 30000;
306
                                        speak = 1;
356
                                        speak = 1;
307
                                        break;
357
                                        break;
308
                                case 2:
358
                                case 2:
309
                                        if(speak) SpeakHoTT = SPEAK_CALIBRATE; speak = 0;
359
                                        if(speak) SpeakHoTT = SPEAK_CALIBRATE; speak = 0;
310
 
360
 
311
                                                 if(MagVector.X > x_max) { x_max = MagVector.X; BeepTime = 60; }
361
                                                 if(MagVector.X > x_max) { x_max = MagVector.X; BeepTime = 60; }
312
                                        else if(MagVector.X < x_min) { x_min = MagVector.X; BeepTime = 20; }
362
                                        else if(MagVector.X < x_min) { x_min = MagVector.X; BeepTime = 20; }
313
                                                 if(MagVector.Y > y_max) { y_max = MagVector.Y; BeepTime = 60; }
363
                                                 if(MagVector.Y > y_max) { y_max = MagVector.Y; BeepTime = 60; }
314
                                        else if(MagVector.Y < y_min) { y_min = MagVector.Y; BeepTime = 20; }
364
                                        else if(MagVector.Y < y_min) { y_min = MagVector.Y; BeepTime = 20; }
315
 
365
 
316
                                        break;
366
                                        break;
317
                                case 3:
367
                                case 3:
318
                                        speak = 1;
368
                                        speak = 1;
319
                                        break;
369
                                        break;
320
                                case 4:
370
                                case 4:
321
                                        if(speak) SpeakHoTT = SPEAK_CALIBRATE;  speak = 0;
371
                                        if(speak) SpeakHoTT = SPEAK_CALIBRATE;  speak = 0;
322
                                                 if(MagVector.Z > z_max) { z_max = MagVector.Z; BeepTime = 80; }
372
                                                 if(MagVector.Z > z_max) { z_max = MagVector.Z; BeepTime = 80; }
323
                                        else if(MagVector.Z < z_min) { z_min = MagVector.Z; BeepTime = 80; }
373
                                        else if(MagVector.Z < z_min) { z_min = MagVector.Z; BeepTime = 80; }
324
                                        break;
374
                                        break;
325
                                case 5:
375
                                case 5:
326
                                    if(last_state == Compass_CalState) break;
376
                                    if(last_state == Compass_CalState) break;
327
                                        if(((x_max - x_min) > MinCaclibration) && ((y_max - y_min) > MinCaclibration) && ((z_max - z_min) > MinCaclibration))
377
                                        if(((x_max - x_min) > MinCaclibration) && ((y_max - y_min) > MinCaclibration) && ((z_max - z_min) > MinCaclibration))
328
                                        {
378
                                        {
329
                                        BeepTime = 2500;
379
                                        BeepTime = 2500;
330
                                        UART1_PutString("\r\n-> Calibration okay <-\n\r");
380
                                        UART1_PutString("\r\n-> Calibration okay <-\n\r");
331
SpeakHoTT = SPEAK_MIKROKOPTER;
381
SpeakHoTT = SPEAK_MIKROKOPTER;
332
                                        }
382
                                        }
333
                                        else
383
                                        else
334
                                        {
384
                                        {
335
                                        UART1_PutString("\r\nCalibration FAILED - Values too low: ");
385
                                        UART1_PutString("\r\nCalibration FAILED - Values too low: ");
336
                                    if((x_max - x_min) < MinCaclibration) UART1_PutString("X! ");
386
                                    if((x_max - x_min) < MinCaclibration) UART1_PutString("X! ");
337
                                    if((y_max - y_min) < MinCaclibration) UART1_PutString("Y! ");
387
                                    if((y_max - y_min) < MinCaclibration) UART1_PutString("Y! ");
338
                                    if((z_max - z_min) < MinCaclibration) UART1_PutString("Z! ");
388
                                    if((z_max - z_min) < MinCaclibration) UART1_PutString("Z! ");
339
                                        UART1_PutString("\r\n");
389
                                        UART1_PutString("\r\n");
340
SpeakHoTT = SPEAK_ERR_CALIBARTION;
390
SpeakHoTT = SPEAK_ERR_CALIBARTION;
341
                                        }
391
                                        }
342
                                        UART1_PutString(msg);
392
                                        UART1_PutString(msg);
343
                                        sprintf(msg, "\r\nX: (%i - %i = %i)\r\n",x_max,x_min,x_max - x_min);
393
                                        sprintf(msg, "\r\nX: (%i - %i = %i)\r\n",x_max,x_min,x_max - x_min);
344
                                        UART1_PutString(msg);
394
                                        UART1_PutString(msg);
345
                                        sprintf(msg, "Y: (%i - %i = %i)\r\n",y_max,y_min,y_max - y_min);
395
                                        sprintf(msg, "Y: (%i - %i = %i)\r\n",y_max,y_min,y_max - y_min);
346
                                        UART1_PutString(msg);
396
                                        UART1_PutString(msg);
347
                                        sprintf(msg, "Z: (%i - %i = %i)\r\n",z_max,z_min,z_max - z_min);
397
                                        sprintf(msg, "Z: (%i - %i = %i)\r\n",z_max,z_min,z_max - z_min);
348
                                        UART1_PutString(msg);
398
                                        UART1_PutString(msg);
349
                                        sprintf(msg, "(Minimum ampilitude is: %i)\r\n",MinCaclibration);
399
                                        sprintf(msg, "(Minimum ampilitude is: %i)\r\n",MinCaclibration);
350
                                        UART1_PutString(msg);
400
                                        UART1_PutString(msg);
351
                                        break;
401
                                        break;
352
                                default:
402
                                default:
353
                                        break;
403
                                        break;
354
                        }
404
                        }
355
                        last_state = Compass_CalState;
405
                        last_state = Compass_CalState;
356
                }
406
                }
357
                TimerUpdate = SetDelay(20);    // every 20 ms are 50 Hz
407
                TimerUpdate = SetDelay(20);    // every 20 ms are 50 Hz
358
        }
408
        }
359
}
409
}
360
 
410