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1 | /*#######################################################################################*/ |
1 | /*#######################################################################################*/ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
2 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
3 | /*#######################################################################################*/ |
3 | /*#######################################################################################*/ |
4 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
55 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
56 | #include <string.h> |
56 | #include <string.h> |
57 | #include "91x_lib.h" |
57 | #include "91x_lib.h" |
58 | #include "uart1.h" |
58 | #include "uart1.h" |
59 | #include "ubx.h" |
59 | #include "ubx.h" |
60 | #include "led.h" |
60 | #include "led.h" |
61 | #include "timer1.h" |
61 | #include "timer1.h" |
62 | 62 | ||
63 | // ------------------------------------------------------------------------------------------------ |
63 | // ------------------------------------------------------------------------------------------------ |
64 | // defines |
64 | // defines |
65 | 65 | ||
66 | #define DAYS_FROM_JAN01YEAR0001_TO_JAN6_1980 722819 // the year 0 does not exist! |
66 | #define DAYS_FROM_JAN01YEAR0001_TO_JAN6_1980 722819 // the year 0 does not exist! |
67 | #define DAYS_PER_YEAR 365 |
67 | #define DAYS_PER_YEAR 365 |
68 | #define DAYS_PER_LEAPYEAR 366 |
68 | #define DAYS_PER_LEAPYEAR 366 |
69 | #define DAYS_PER_4YEARS 1461 //((3 * DAYS_PER_YEAR) + DAYS_PER_LEAPYEAR) // years dividable by 4 are leap years |
69 | #define DAYS_PER_4YEARS 1461 //((3 * DAYS_PER_YEAR) + DAYS_PER_LEAPYEAR) // years dividable by 4 are leap years |
70 | #define DAYS_PER_100YEARS 36524 //((25 * DAYS_PER_4YEARS) - 1) // years dividable by 100 are no leap years |
70 | #define DAYS_PER_100YEARS 36524 //((25 * DAYS_PER_4YEARS) - 1) // years dividable by 100 are no leap years |
71 | #define DAYS_PER_400YEARS 146097 //((4 * DAYS_PER_100YEARS) + 1L) // but years dividable by 400 are leap years |
71 | #define DAYS_PER_400YEARS 146097 //((4 * DAYS_PER_100YEARS) + 1L) // but years dividable by 400 are leap years |
72 | #define SECONDS_PER_MINUTE 60 |
72 | #define SECONDS_PER_MINUTE 60 |
73 | #define MINUTES_PER_HOUR 60 |
73 | #define MINUTES_PER_HOUR 60 |
74 | #define HOURS_PER_DAY 24 |
74 | #define HOURS_PER_DAY 24 |
75 | #define DAYS_PER_WEEK 7 |
75 | #define DAYS_PER_WEEK 7 |
76 | #define SECONDS_PER_HOUR 3600 //(SECONDS_PER_MINUTE * MINUTES_PER_HOUR) |
76 | #define SECONDS_PER_HOUR 3600 //(SECONDS_PER_MINUTE * MINUTES_PER_HOUR) |
77 | #define SECONDS_PER_DAY 86400 //(SECONDS_PER_HOUR * HOURS_PER_DAY) |
77 | #define SECONDS_PER_DAY 86400 //(SECONDS_PER_HOUR * HOURS_PER_DAY) |
78 | #define SECONDS_PER_WEEK 604800 //(SECONDS_PER_DAY * DAYS_PER_WEEK) |
78 | #define SECONDS_PER_WEEK 604800 //(SECONDS_PER_DAY * DAYS_PER_WEEK) |
79 | 79 | ||
80 | // days per month in normal and leap years |
80 | // days per month in normal and leap years |
81 | const u32 Leap[ 13 ] = { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }; |
81 | const u32 Leap[ 13 ] = { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }; |
82 | const u32 Normal[ 13 ] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; |
82 | const u32 Normal[ 13 ] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; |
83 | 83 | ||
84 | #define LEAP_SECONDS_FROM_1980 16 |
84 | #define LEAP_SECONDS_FROM_1980 16 |
85 | 85 | ||
86 | // message sync bytes |
86 | // message sync bytes |
87 | #define UBX_SYNC1_CHAR 0xB5 |
87 | #define UBX_SYNC1_CHAR 0xB5 |
88 | #define UBX_SYNC2_CHAR 0x62 |
88 | #define UBX_SYNC2_CHAR 0x62 |
89 | // protocoll identifiers |
89 | // protocoll identifiers |
90 | // navigation class |
90 | // navigation class |
91 | #define UBX_CLASS_NAV 0x01 |
91 | #define UBX_CLASS_NAV 0x01 |
92 | #define UBX_ID_POSLLH 0x02 |
92 | #define UBX_ID_POSLLH 0x02 |
93 | #define UBX_ID_SOL 0x06 |
93 | #define UBX_ID_SOL 0x06 |
94 | #define UBX_ID_VELNED 0x12 |
94 | #define UBX_ID_VELNED 0x12 |
95 | 95 | ||
96 | // ------------------------------------------------------------------------------------------------ |
96 | // ------------------------------------------------------------------------------------------------ |
97 | // typedefs |
97 | // typedefs |
98 | 98 | ||
99 | 99 | ||
100 | // ubx parser state |
100 | // ubx parser state |
101 | typedef enum |
101 | typedef enum |
102 | { |
102 | { |
103 | UBXSTATE_IDLE, |
103 | UBXSTATE_IDLE, |
104 | UBXSTATE_SYNC1, |
104 | UBXSTATE_SYNC1, |
105 | UBXSTATE_SYNC2, |
105 | UBXSTATE_SYNC2, |
106 | UBXSTATE_CLASS, |
106 | UBXSTATE_CLASS, |
107 | UBXSTATE_LEN1, |
107 | UBXSTATE_LEN1, |
108 | UBXSTATE_LEN2, |
108 | UBXSTATE_LEN2, |
109 | UBXSTATE_DATA, |
109 | UBXSTATE_DATA, |
110 | UBXSTATE_CKA, |
110 | UBXSTATE_CKA, |
111 | UBXSTATE_CKB |
111 | UBXSTATE_CKB |
112 | } ubxState_t; |
112 | } ubxState_t; |
113 | 113 | ||
114 | typedef struct |
114 | typedef struct |
115 | { |
115 | { |
116 | u32 itow; // ms GPS Millisecond Time of Week |
116 | u32 itow; // ms GPS Millisecond Time of Week |
117 | s32 frac; // ns remainder of rounded ms above |
117 | s32 frac; // ns remainder of rounded ms above |
118 | s16 week; // GPS week |
118 | s16 week; // GPS week |
119 | u8 GPSfix; // GPSfix Type, range 0..6 |
119 | u8 GPSfix; // GPSfix Type, range 0..6 |
120 | u8 Flags; // Navigation Status Flags |
120 | u8 Flags; // Navigation Status Flags |
121 | s32 ECEF_X; // cm ECEF X coordinate |
121 | s32 ECEF_X; // cm ECEF X coordinate |
122 | s32 ECEF_Y; // cm ECEF Y coordinate |
122 | s32 ECEF_Y; // cm ECEF Y coordinate |
123 | s32 ECEF_Z; // cm ECEF Z coordinate |
123 | s32 ECEF_Z; // cm ECEF Z coordinate |
124 | u32 PAcc; // cm 3D Position Accuracy Estimate |
124 | u32 PAcc; // cm 3D Position Accuracy Estimate |
125 | s32 ECEFVX; // cm/s ECEF X velocity |
125 | s32 ECEFVX; // cm/s ECEF X velocity |
126 | s32 ECEFVY; // cm/s ECEF Y velocity |
126 | s32 ECEFVY; // cm/s ECEF Y velocity |
127 | s32 ECEFVZ; // cm/s ECEF Z velocity |
127 | s32 ECEFVZ; // cm/s ECEF Z velocity |
128 | u32 SAcc; // cm/s Speed Accuracy Estimate |
128 | u32 SAcc; // cm/s Speed Accuracy Estimate |
129 | u16 PDOP; // 0.01 Position DOP |
129 | u16 PDOP; // 0.01 Position DOP |
130 | u8 res1; // reserved |
130 | u8 res1; // reserved |
131 | u8 numSV; // Number of SVs used in navigation solution |
131 | u8 numSV; // Number of SVs used in navigation solution |
132 | u32 res2; // reserved |
132 | u32 res2; // reserved |
133 | u8 Status; // invalid/newdata/processed |
133 | u8 Status; // invalid/newdata/processed |
134 | } __attribute__((packed)) ubx_nav_sol_t; |
134 | } __attribute__((packed)) ubx_nav_sol_t; |
135 | 135 | ||
136 | 136 | ||
137 | typedef struct |
137 | typedef struct |
138 | { |
138 | { |
139 | u32 itow; // ms GPS Millisecond Time of Week |
139 | u32 itow; // ms GPS Millisecond Time of Week |
140 | s32 VEL_N; // cm/s NED north velocity |
140 | s32 VEL_N; // cm/s NED north velocity |
141 | s32 VEL_E; // cm/s NED east velocity |
141 | s32 VEL_E; // cm/s NED east velocity |
142 | s32 VEL_D; // cm/s NED down velocity |
142 | s32 VEL_D; // cm/s NED down velocity |
143 | u32 Speed; // cm/s Speed (3-D) |
143 | u32 Speed; // cm/s Speed (3-D) |
144 | u32 GSpeed; // cm/s Ground Speed (2-D) |
144 | u32 GSpeed; // cm/s Ground Speed (2-D) |
145 | s32 Heading; // 1e-05 deg Heading 2-D |
145 | s32 Heading; // 1e-05 deg Heading 2-D |
146 | u32 SAcc; // cm/s Speed Accuracy Estimate |
146 | u32 SAcc; // cm/s Speed Accuracy Estimate |
147 | u32 CAcc; // deg Course / Heading Accuracy Estimate |
147 | u32 CAcc; // deg Course / Heading Accuracy Estimate |
148 | u8 Status; // invalid/newdata/processed |
148 | u8 Status; // invalid/newdata/processed |
149 | } __attribute__((packed)) ubx_nav_velned_t; |
149 | } __attribute__((packed)) ubx_nav_velned_t; |
150 | 150 | ||
151 | typedef struct |
151 | typedef struct |
152 | { |
152 | { |
153 | u32 itow; // ms GPS Millisecond Time of Week |
153 | u32 itow; // ms GPS Millisecond Time of Week |
154 | s32 LON; // 1e-07 deg Longitude |
154 | s32 LON; // 1e-07 deg Longitude |
155 | s32 LAT; // 1e-07 deg Latitude |
155 | s32 LAT; // 1e-07 deg Latitude |
156 | s32 HEIGHT; // mm Height above Ellipsoid |
156 | s32 HEIGHT; // mm Height above Ellipsoid |
157 | s32 HMSL; // mm Height above mean sea level |
157 | s32 HMSL; // mm Height above mean sea level |
158 | u32 Hacc; // mm Horizontal Accuracy Estimate |
158 | u32 Hacc; // mm Horizontal Accuracy Estimate |
159 | u32 Vacc; // mm Vertical Accuracy Estimate |
159 | u32 Vacc; // mm Vertical Accuracy Estimate |
160 | u8 Status; // invalid/newdata/processed |
160 | u8 Status; // invalid/newdata/processed |
161 | } __attribute__((packed)) ubx_nav_posllh_t; |
161 | } __attribute__((packed)) ubx_nav_posllh_t; |
162 | 162 | ||
163 | //------------------------------------------------------------------------------------ |
163 | //------------------------------------------------------------------------------------ |
164 | // global variables |
164 | // global variables |
165 | 165 | ||
166 | // local buffers for the incomming ubx messages |
166 | // local buffers for the incomming ubx messages |
167 | ubx_nav_sol_t UbxSol = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, INVALID}; |
167 | ubx_nav_sol_t UbxSol = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, INVALID}; |
168 | ubx_nav_posllh_t UbxPosLlh = {0,0,0,0,0,0,0, INVALID}; |
168 | ubx_nav_posllh_t UbxPosLlh = {0,0,0,0,0,0,0, INVALID}; |
169 | ubx_nav_velned_t UbxVelNed = {0,0,0,0,0,0,0,0,0, INVALID}; |
169 | ubx_nav_velned_t UbxVelNed = {0,0,0,0,0,0,0,0,0, INVALID}; |
170 | ubxmsg_t UbxMsg; |
170 | ubxmsg_t UbxMsg; |
171 | 171 | ||
172 | // shared buffer |
172 | // shared buffer |
173 | gps_data_t GPSData = {200,{0,0,0,INVALID},0,0,0,0,0,0,0, INVALID}; |
173 | gps_data_t GPSData = {200,{0,0,0,INVALID},0,0,0,0,0,0,0, INVALID}; |
174 | DateTime_t GPSDateTime = {0,0,0,0,0,0,0, INVALID}; |
174 | DateTime_t GPSDateTime = {0,0,0,0,0,0,0, INVALID}; |
175 | 175 | ||
176 | #define UBX_TIMEOUT 500 // 500 ms |
176 | #define UBX_TIMEOUT 500 // 500 ms |
177 | u32 UBX_Timeout = 0; |
177 | u32 UBX_Timeout = 0; |
178 | 178 | ||
179 | //------------------------------------------------------------------------------------ |
179 | //------------------------------------------------------------------------------------ |
180 | // functions |
180 | // functions |
181 | 181 | ||
182 | u8 IsLeapYear(u16 year) |
182 | u8 IsLeapYear(u16 year) |
183 | { |
183 | { |
184 | if((year%400 == 0) || ( (year%4 == 0) && (year%100 != 0) ) ) return 1; |
184 | if((year%400 == 0) || ( (year%4 == 0) && (year%100 != 0) ) ) return 1; |
185 | else return 0; |
185 | else return 0; |
186 | } |
186 | } |
187 | /********************************************************/ |
187 | /********************************************************/ |
188 | /* Calculates the UTC Time from the GPS week and tow */ |
188 | /* Calculates the UTC Time from the GPS week and tow */ |
189 | /********************************************************/ |
189 | /********************************************************/ |
190 | void SetGPSTime(DateTime_t * pTimeStruct) |
190 | void SetGPSTime(DateTime_t * pTimeStruct) |
191 | { |
191 | { |
192 | u32 Days, Seconds, Week; |
192 | u32 Days, Seconds, Week; |
193 | u16 YearPart; |
193 | u16 YearPart; |
194 | u32 * MonthDayTab = 0; |
194 | u32 * MonthDayTab = 0; |
195 | u8 i; |
195 | u8 i; |
196 | 196 | ||
197 | 197 | ||
198 | // if GPS data show valid time data |
198 | // if GPS data show valid time data |
199 | if((UbxSol.Status != INVALID) && (UbxSol.Flags & FLAG_WKNSET) && (UbxSol.Flags & FLAG_TOWSET) ) |
199 | if((UbxSol.Status != INVALID) && (UbxSol.Flags & FLAG_WKNSET) && (UbxSol.Flags & FLAG_TOWSET) ) |
200 | { |
200 | { |
201 | Seconds = UbxSol.itow / 1000L; |
201 | Seconds = UbxSol.itow / 1000L; |
202 | Week = (u32)UbxSol.week; |
202 | Week = (u32)UbxSol.week; |
203 | // correct leap seconds since 1980 |
203 | // correct leap seconds since 1980 |
204 | if(Seconds < LEAP_SECONDS_FROM_1980) |
204 | if(Seconds < LEAP_SECONDS_FROM_1980) |
205 | { |
205 | { |
206 | Week--; |
206 | Week--; |
207 | Seconds = SECONDS_PER_WEEK - LEAP_SECONDS_FROM_1980 + Seconds; |
207 | Seconds = SECONDS_PER_WEEK - LEAP_SECONDS_FROM_1980 + Seconds; |
208 | } |
208 | } |
209 | else Seconds -= LEAP_SECONDS_FROM_1980; |
209 | else Seconds -= LEAP_SECONDS_FROM_1980; |
210 | 210 | ||
211 | Days = DAYS_FROM_JAN01YEAR0001_TO_JAN6_1980; |
211 | Days = DAYS_FROM_JAN01YEAR0001_TO_JAN6_1980; |
212 | Days += (Week * DAYS_PER_WEEK); |
212 | Days += (Week * DAYS_PER_WEEK); |
213 | Days += Seconds / SECONDS_PER_DAY; // seperate days from GPS seconds of week |
213 | Days += Seconds / SECONDS_PER_DAY; // seperate days from GPS seconds of week |
214 | 214 | ||
215 | pTimeStruct->Year = 1; |
215 | pTimeStruct->Year = 1; |
216 | YearPart = (u16)(Days / DAYS_PER_400YEARS); |
216 | YearPart = (u16)(Days / DAYS_PER_400YEARS); |
217 | pTimeStruct->Year += YearPart * 400; |
217 | pTimeStruct->Year += YearPart * 400; |
218 | Days = Days % DAYS_PER_400YEARS; |
218 | Days = Days % DAYS_PER_400YEARS; |
219 | YearPart = (u16)(Days / DAYS_PER_100YEARS); |
219 | YearPart = (u16)(Days / DAYS_PER_100YEARS); |
220 | pTimeStruct->Year += YearPart * 100; |
220 | pTimeStruct->Year += YearPart * 100; |
221 | Days = Days % DAYS_PER_100YEARS; |
221 | Days = Days % DAYS_PER_100YEARS; |
222 | YearPart = (u16)(Days / DAYS_PER_4YEARS); |
222 | YearPart = (u16)(Days / DAYS_PER_4YEARS); |
223 | pTimeStruct->Year += YearPart * 4; |
223 | pTimeStruct->Year += YearPart * 4; |
224 | Days = Days % DAYS_PER_4YEARS; |
224 | Days = Days % DAYS_PER_4YEARS; |
225 | if(Days < (3* DAYS_PER_YEAR)) YearPart = (u16)(Days / DAYS_PER_YEAR); |
225 | if(Days < (3* DAYS_PER_YEAR)) YearPart = (u16)(Days / DAYS_PER_YEAR); |
226 | else YearPart = 3; |
226 | else YearPart = 3; |
227 | pTimeStruct->Year += YearPart; |
227 | pTimeStruct->Year += YearPart; |
228 | // calculate remaining days of year |
228 | // calculate remaining days of year |
229 | Days -= (u32)(YearPart * DAYS_PER_YEAR); |
229 | Days -= (u32)(YearPart * DAYS_PER_YEAR); |
230 | Days += 1; |
230 | Days += 1; |
231 | // check if current year is a leap year |
231 | // check if current year is a leap year |
232 | if(IsLeapYear(pTimeStruct->Year)) MonthDayTab = (u32*)Leap; |
232 | if(IsLeapYear(pTimeStruct->Year)) MonthDayTab = (u32*)Leap; |
233 | else MonthDayTab = (u32*)Normal; |
233 | else MonthDayTab = (u32*)Normal; |
234 | // seperate month and day from days of year |
234 | // seperate month and day from days of year |
235 | for ( i = 0; i < 12; i++ ) |
235 | for ( i = 0; i < 12; i++ ) |
236 | { |
236 | { |
237 | if ( (MonthDayTab[i]< Days) && (Days <= MonthDayTab[i+1]) ) |
237 | if ( (MonthDayTab[i]< Days) && (Days <= MonthDayTab[i+1]) ) |
238 | { |
238 | { |
239 | pTimeStruct->Month = i+1; |
239 | pTimeStruct->Month = i+1; |
240 | pTimeStruct->Day = Days - MonthDayTab[i]; |
240 | pTimeStruct->Day = Days - MonthDayTab[i]; |
241 | i = 12; |
241 | i = 12; |
242 | } |
242 | } |
243 | } |
243 | } |
244 | Seconds = Seconds % SECONDS_PER_DAY; // remaining seconds of current day |
244 | Seconds = Seconds % SECONDS_PER_DAY; // remaining seconds of current day |
245 | pTimeStruct->Hour = (u8)(Seconds / SECONDS_PER_HOUR); |
245 | pTimeStruct->Hour = (u8)(Seconds / SECONDS_PER_HOUR); |
246 | Seconds = Seconds % SECONDS_PER_HOUR; // remaining seconds of current hour |
246 | Seconds = Seconds % SECONDS_PER_HOUR; // remaining seconds of current hour |
247 | pTimeStruct->Min = (u8)(Seconds / SECONDS_PER_MINUTE); |
247 | pTimeStruct->Min = (u8)(Seconds / SECONDS_PER_MINUTE); |
248 | Seconds = Seconds % SECONDS_PER_MINUTE; // remaining seconds of current minute |
248 | Seconds = Seconds % SECONDS_PER_MINUTE; // remaining seconds of current minute |
249 | pTimeStruct->Sec = (u8)(Seconds); |
249 | pTimeStruct->Sec = (u8)(Seconds); |
250 | pTimeStruct->mSec = (u16)(UbxSol.itow % 1000L); |
250 | pTimeStruct->mSec = (u16)(UbxSol.itow % 1000L); |
251 | pTimeStruct->Valid = 1; |
251 | pTimeStruct->Valid = 1; |
252 | } |
252 | } |
253 | else |
253 | else |
254 | { |
254 | { |
255 | pTimeStruct->Valid = 0; |
255 | pTimeStruct->Valid = 0; |
256 | } |
256 | } |
257 | } |
257 | } |
258 | 258 | ||
259 | 259 | ||
260 | 260 | ||
261 | /********************************************************/ |
261 | /********************************************************/ |
262 | /* Initialize UBX Parser */ |
262 | /* Initialize UBX Parser */ |
263 | /********************************************************/ |
263 | /********************************************************/ |
264 | void UBX_Init(void) |
264 | void UBX_Init(void) |
265 | { |
265 | { |
266 | // mark msg buffers invalid |
266 | // mark msg buffers invalid |
267 | UbxSol.Status = INVALID; |
267 | UbxSol.Status = INVALID; |
268 | UbxPosLlh.Status = INVALID; |
268 | UbxPosLlh.Status = INVALID; |
269 | UbxVelNed.Status = INVALID; |
269 | UbxVelNed.Status = INVALID; |
270 | UbxMsg.Status = INVALID; |
270 | UbxMsg.Status = INVALID; |
271 | GPSData.Status = INVALID; |
271 | GPSData.Status = INVALID; |
272 | 272 | ||
273 | UBX_Timeout = SetDelay(2 * UBX_Timeout); |
273 | UBX_Timeout = SetDelay(2 * UBX_Timeout); |
274 | } |
274 | } |
275 | 275 | ||
276 | /********************************************************/ |
276 | /********************************************************/ |
277 | /* Upate GPS data stcructure */ |
277 | /* Upate GPS data stcructure */ |
278 | /********************************************************/ |
278 | /********************************************************/ |
279 | void Update_GPSData(void) |
279 | void Update_GPSData(void) |
280 | { |
280 | { |
281 | static u32 last_itow = 0; |
281 | static u32 last_itow = 0; |
282 | 282 | ||
283 | // if a new set of ubx messages was collected |
283 | // if a new set of ubx messages was collected |
284 | if((UbxSol.Status == NEWDATA) && (UbxPosLlh.Status == NEWDATA) && (UbxVelNed.Status == NEWDATA)) |
284 | if((UbxSol.Status == NEWDATA) && (UbxPosLlh.Status == NEWDATA) && (UbxVelNed.Status == NEWDATA)) |
285 | { // and the itow is equal (same time base) |
285 | { // and the itow is equal (same time base) |
286 | UART_VersionInfo.Flags |= NC_VERSION_FLAG_GPS_PRESENT; |
286 | UART_VersionInfo.Flags |= NC_VERSION_FLAG_GPS_PRESENT; |
287 | if((UbxSol.itow == UbxPosLlh.itow) && (UbxPosLlh.itow == UbxVelNed.itow)) |
287 | if((UbxSol.itow == UbxPosLlh.itow) && (UbxPosLlh.itow == UbxVelNed.itow)) |
288 | { |
288 | { |
289 | UBX_Timeout = SetDelay(UBX_TIMEOUT); |
289 | UBX_Timeout = SetDelay(UBX_TIMEOUT); |
290 | DebugOut.Analog[9]++; |
290 | DebugOut.Analog[9]++; |
291 | // update GPS data only if the status is INVALID or PROCESSED |
291 | // update GPS data only if the status is INVALID or PROCESSED |
292 | if(GPSData.Status != NEWDATA) |
292 | if(GPSData.Status != NEWDATA) |
293 | { // wait for new data at all neccesary ubx messages |
293 | { // wait for new data at all neccesary ubx messages |
294 | GPSData.Status = INVALID; |
294 | GPSData.Status = INVALID; |
295 | // update message cycle time |
295 | // update message cycle time |
296 | GPSData.MsgCycleTime = (u16)(UbxSol.itow-last_itow); |
296 | GPSData.MsgCycleTime = (u16)(UbxSol.itow-last_itow); |
297 | last_itow = UbxSol.itow; // update last itow |
297 | last_itow = UbxSol.itow; // update last itow |
298 | // NAV SOL |
298 | // NAV SOL |
299 | GPSData.Flags = (GPSData.Flags & 0xf0) | (UbxSol.Flags & 0x0f); // we take only the lower bits |
299 | GPSData.Flags = (GPSData.Flags & 0xf0) | (UbxSol.Flags & 0x0f); // we take only the lower bits |
300 | GPSData.NumOfSats = UbxSol.numSV; |
300 | GPSData.NumOfSats = UbxSol.numSV; |
301 | GPSData.SatFix = UbxSol.GPSfix; |
301 | GPSData.SatFix = UbxSol.GPSfix; |
302 | GPSData.Position_Accuracy = UbxSol.PAcc; // in steps of 1cm |
302 | GPSData.Position_Accuracy = UbxSol.PAcc; // in steps of 1cm |
303 | GPSData.Speed_Accuracy = UbxSol.SAcc; // in steps of 1cm/s |
303 | GPSData.Speed_Accuracy = UbxSol.SAcc; // in steps of 1cm/s |
304 | SetGPSTime(&SystemTime); // update system time |
304 | SetGPSTime(&SystemTime); // update system time |
305 | // NAV POSLLH |
305 | // NAV POSLLH |
306 | GPSData.Position.Status = INVALID; |
306 | GPSData.Position.Status = INVALID; |
307 | GPSData.Position.Longitude = UbxPosLlh.LON; // in steps of 1E-7 deg |
307 | GPSData.Position.Longitude = UbxPosLlh.LON; // in steps of 1E-7 deg |
308 | GPSData.Position.Latitude = UbxPosLlh.LAT; // in steps of 1E-7 deg |
308 | GPSData.Position.Latitude = UbxPosLlh.LAT; // in steps of 1E-7 deg |
309 | GPSData.Position.Altitude = UbxPosLlh.HMSL; // in steps of 1 mm |
309 | GPSData.Position.Altitude = UbxPosLlh.HMSL; // in steps of 1 mm |
310 | GPSData.Position.Status = NEWDATA; |
310 | GPSData.Position.Status = NEWDATA; |
311 | // NAV VELNED |
311 | // NAV VELNED |
312 | GPSData.Speed_East = UbxVelNed.VEL_E; // in steps of 1cm/s |
312 | GPSData.Speed_East = UbxVelNed.VEL_E; // in steps of 1cm/s |
313 | GPSData.Speed_North = UbxVelNed.VEL_N; // in steps of 1cm/s |
313 | GPSData.Speed_North = UbxVelNed.VEL_N; // in steps of 1cm/s |
314 | GPSData.Speed_Top = -UbxVelNed.VEL_D; // in steps of 1cm/s |
314 | GPSData.Speed_Top = -UbxVelNed.VEL_D; // in steps of 1cm/s |
315 | GPSData.Speed_Ground = UbxVelNed.GSpeed; // in steps of 1cm/s |
315 | GPSData.Speed_Ground = UbxVelNed.GSpeed; // in steps of 1cm/s |
316 | GPSData.Heading = UbxVelNed.Heading; //in steps of 1E-5 deg |
316 | GPSData.Heading = UbxVelNed.Heading; //in steps of 1E-5 deg |
317 | 317 | ||
318 | GPSData.Status = NEWDATA; // new data available |
318 | GPSData.Status = NEWDATA; // new data available |
319 | } // EOF if(GPSData.Status != NEWDATA) |
319 | } // EOF if(GPSData.Status != NEWDATA) |
320 | // set state to collect new data |
320 | // set state to collect new data |
321 | UbxSol.Status = PROCESSED; // ready for new data |
321 | UbxSol.Status = PROCESSED; // ready for new data |
322 | UbxPosLlh.Status = PROCESSED; // ready for new data |
322 | UbxPosLlh.Status = PROCESSED; // ready for new data |
323 | UbxVelNed.Status = PROCESSED; // ready for new data |
323 | UbxVelNed.Status = PROCESSED; // ready for new data |
324 | } // EOF all itow are equal |
324 | } // EOF all itow are equal |
325 | } // EOF all ubx messages received |
325 | } // EOF all ubx messages received |
326 | 326 | ||
327 | 327 | ||
328 | //++++++++++++++++++++++++++++++++ |
328 | //++++++++++++++++++++++++++++++++ |
329 | // Please do not delete |
329 | // Please do not delete |
330 | // This helps me for testing |
330 | // This helps me for testing |
331 | //++++++++++++++++++++++++++++++++ |
331 | //++++++++++++++++++++++++++++++++ |
332 | //GPSData.Position.Longitude = 1517409123L; // Hamilton, Australia |
332 | //GPSData.Position.Longitude = 1517409123L; // Hamilton, Australia |
333 | //GPSData.Position.Latitude = -329294773L; // Hamilton, Australia |
333 | //GPSData.Position.Latitude = -329294773L; // Hamilton, Australia |
334 | //++++++++ |
334 | //++++++++ |
335 | //GPSData.Position.Longitude =-1556010020L; // Alaska |
335 | //GPSData.Position.Longitude =-1556010020L; // Alaska |
336 | //GPSData.Position.Latitude = 629581270L; // Alaska |
336 | //GPSData.Position.Latitude = 629581270L; // Alaska |
337 | //++++++++ |
337 | //++++++++ |
338 | //GPSData.Position.Longitude =-584343419L; // Buenos aires |
338 | //GPSData.Position.Longitude =-584343419L; // Buenos aires |
339 | //GPSData.Position.Latitude = -345464421L; // Buenos aires |
339 | //GPSData.Position.Latitude = -345464421L; // Buenos aires |
340 | //++++++++ |
340 | //++++++++ |
341 | //GPSData.Position.Longitude =1683362691L; // Neuseeland |
341 | //GPSData.Position.Longitude =1683362691L; // Neuseeland |
342 | //GPSData.Position.Latitude = -465945926L; // Neuseeland |
342 | //GPSData.Position.Latitude = -465945926L; // Neuseeland |
- | 343 | //++++++++ |
|
- | 344 | //GPSData.Position.Longitude =-740443840L; // Liberty Staue davor |
|
- | 345 | //GPSData.Position.Latitude = 406888880L; // Liberty Staue |
|
- | 346 | ||
- | 347 | //GPSData.Position.Longitude =-740451660L; // Liberty Staue daneben |
|
- | 348 | //GPSData.Position.Latitude = 406891880L; // Liberty Staue |
|
- | 349 | ||
- | 350 | //GPSData.Position.Longitude =-740446540L; // Liberty Staue direkt |
|
- | 351 | //GPSData.Position.Latitude = 406891590L; // Liberty Staue 1 |
|
- | 352 | ||
343 | } |
353 | } |
344 | 354 | ||
345 | 355 | ||
346 | /********************************************************/ |
356 | /********************************************************/ |
347 | /* UBX Parser */ |
357 | /* UBX Parser */ |
348 | /********************************************************/ |
358 | /********************************************************/ |
349 | void UBX_RxParser(u8 c) |
359 | void UBX_RxParser(u8 c) |
350 | { |
360 | { |
351 | static ubxState_t ubxState = UBXSTATE_IDLE; |
361 | static ubxState_t ubxState = UBXSTATE_IDLE; |
352 | static ubxmsghdr_t RxHdr; |
362 | static ubxmsghdr_t RxHdr; |
353 | static u8 RxData[UBX_MSG_DATA_SIZE]; |
363 | static u8 RxData[UBX_MSG_DATA_SIZE]; |
354 | static u16 RxBytes = 0; |
364 | static u16 RxBytes = 0; |
355 | static u8 cka, ckb; |
365 | static u8 cka, ckb; |
356 | 366 | ||
357 | 367 | ||
358 | //state machine |
368 | //state machine |
359 | switch (ubxState) // ubx message parser |
369 | switch (ubxState) // ubx message parser |
360 | { |
370 | { |
361 | case UBXSTATE_IDLE: // check 1st sync byte |
371 | case UBXSTATE_IDLE: // check 1st sync byte |
362 | if (c == UBX_SYNC1_CHAR) ubxState = UBXSTATE_SYNC1; |
372 | if (c == UBX_SYNC1_CHAR) ubxState = UBXSTATE_SYNC1; |
363 | else ubxState = UBXSTATE_IDLE; // out of synchronization |
373 | else ubxState = UBXSTATE_IDLE; // out of synchronization |
364 | break; |
374 | break; |
365 | 375 | ||
366 | case UBXSTATE_SYNC1: // check 2nd sync byte |
376 | case UBXSTATE_SYNC1: // check 2nd sync byte |
367 | if (c == UBX_SYNC2_CHAR) ubxState = UBXSTATE_SYNC2; |
377 | if (c == UBX_SYNC2_CHAR) ubxState = UBXSTATE_SYNC2; |
368 | else ubxState = UBXSTATE_IDLE; // out of synchronization |
378 | else ubxState = UBXSTATE_IDLE; // out of synchronization |
369 | break; |
379 | break; |
370 | 380 | ||
371 | case UBXSTATE_SYNC2: // check msg class to be NAV |
381 | case UBXSTATE_SYNC2: // check msg class to be NAV |
372 | RxHdr.Class = c; |
382 | RxHdr.Class = c; |
373 | ubxState = UBXSTATE_CLASS; |
383 | ubxState = UBXSTATE_CLASS; |
374 | break; |
384 | break; |
375 | 385 | ||
376 | case UBXSTATE_CLASS: // check message identifier |
386 | case UBXSTATE_CLASS: // check message identifier |
377 | RxHdr.Id = c; |
387 | RxHdr.Id = c; |
378 | ubxState = UBXSTATE_LEN1; |
388 | ubxState = UBXSTATE_LEN1; |
379 | cka = RxHdr.Class + RxHdr.Id; |
389 | cka = RxHdr.Class + RxHdr.Id; |
380 | ckb = RxHdr.Class + cka; |
390 | ckb = RxHdr.Class + cka; |
381 | break; |
391 | break; |
382 | 392 | ||
383 | case UBXSTATE_LEN1: // 1st message length byte |
393 | case UBXSTATE_LEN1: // 1st message length byte |
384 | RxHdr.Length = (u16)c; // lowbyte first |
394 | RxHdr.Length = (u16)c; // lowbyte first |
385 | cka += c; |
395 | cka += c; |
386 | ckb += cka; |
396 | ckb += cka; |
387 | ubxState = UBXSTATE_LEN2; |
397 | ubxState = UBXSTATE_LEN2; |
388 | break; |
398 | break; |
389 | 399 | ||
390 | case UBXSTATE_LEN2: // 2nd message length byte |
400 | case UBXSTATE_LEN2: // 2nd message length byte |
391 | RxHdr.Length += ((u16)c)<<8; // high byte last |
401 | RxHdr.Length += ((u16)c)<<8; // high byte last |
392 | if (RxHdr.Length >= UBX_MSG_DATA_SIZE) |
402 | if (RxHdr.Length >= UBX_MSG_DATA_SIZE) |
393 | { |
403 | { |
394 | ubxState = UBXSTATE_IDLE; |
404 | ubxState = UBXSTATE_IDLE; |
395 | } |
405 | } |
396 | else |
406 | else |
397 | { |
407 | { |
398 | cka += c; |
408 | cka += c; |
399 | ckb += cka; |
409 | ckb += cka; |
400 | RxBytes = 0; // reset data byte counter |
410 | RxBytes = 0; // reset data byte counter |
401 | ubxState = UBXSTATE_DATA; |
411 | ubxState = UBXSTATE_DATA; |
402 | } |
412 | } |
403 | break; |
413 | break; |
404 | 414 | ||
405 | case UBXSTATE_DATA: // collecting data |
415 | case UBXSTATE_DATA: // collecting data |
406 | if (RxBytes < UBX_MSG_DATA_SIZE) |
416 | if (RxBytes < UBX_MSG_DATA_SIZE) |
407 | { |
417 | { |
408 | RxData[RxBytes++] = c; // copy curent data byte if any space is left |
418 | RxData[RxBytes++] = c; // copy curent data byte if any space is left |
409 | cka += c; |
419 | cka += c; |
410 | ckb += cka; |
420 | ckb += cka; |
411 | if (RxBytes >= RxHdr.Length) ubxState = UBXSTATE_CKA; // switch to next state if all data have been received |
421 | if (RxBytes >= RxHdr.Length) ubxState = UBXSTATE_CKA; // switch to next state if all data have been received |
412 | } |
422 | } |
413 | else // rx buffer overrun |
423 | else // rx buffer overrun |
414 | { |
424 | { |
415 | ubxState = UBXSTATE_IDLE; |
425 | ubxState = UBXSTATE_IDLE; |
416 | } |
426 | } |
417 | break; |
427 | break; |
418 | 428 | ||
419 | case UBXSTATE_CKA: |
429 | case UBXSTATE_CKA: |
420 | if (c == cka) ubxState = UBXSTATE_CKB; |
430 | if (c == cka) ubxState = UBXSTATE_CKB; |
421 | else |
431 | else |
422 | { |
432 | { |
423 | ubxState = UBXSTATE_IDLE; |
433 | ubxState = UBXSTATE_IDLE; |
424 | } |
434 | } |
425 | break; |
435 | break; |
426 | 436 | ||
427 | case UBXSTATE_CKB: |
437 | case UBXSTATE_CKB: |
428 | if (c == ckb) |
438 | if (c == ckb) |
429 | { // checksum is ok |
439 | { // checksum is ok |
430 | 440 | ||
431 | switch(RxHdr.Class) |
441 | switch(RxHdr.Class) |
432 | { |
442 | { |
433 | case UBX_CLASS_NAV: |
443 | case UBX_CLASS_NAV: |
434 | switch(RxHdr.Id) |
444 | switch(RxHdr.Id) |
435 | { |
445 | { |
436 | case UBX_ID_POSLLH: // geodetic position |
446 | case UBX_ID_POSLLH: // geodetic position |
437 | memcpy((u8*)&UbxPosLlh, RxData, RxHdr.Length); |
447 | memcpy((u8*)&UbxPosLlh, RxData, RxHdr.Length); |
438 | UbxPosLlh.Status = NEWDATA; |
448 | UbxPosLlh.Status = NEWDATA; |
439 | break; |
449 | break; |
440 | 450 | ||
441 | case UBX_ID_VELNED: // velocity vector in tangent plane |
451 | case UBX_ID_VELNED: // velocity vector in tangent plane |
442 | memcpy((u8*)&UbxVelNed, RxData, RxHdr.Length); |
452 | memcpy((u8*)&UbxVelNed, RxData, RxHdr.Length); |
443 | UbxVelNed.Status = NEWDATA; |
453 | UbxVelNed.Status = NEWDATA; |
444 | break; |
454 | break; |
445 | 455 | ||
446 | case UBX_ID_SOL: // navigation solution |
456 | case UBX_ID_SOL: // navigation solution |
447 | memcpy((u8*)&UbxSol, RxData, RxHdr.Length); |
457 | memcpy((u8*)&UbxSol, RxData, RxHdr.Length); |
448 | UbxSol.Status = NEWDATA; |
458 | UbxSol.Status = NEWDATA; |
449 | break; |
459 | break; |
450 | 460 | ||
451 | default: |
461 | default: |
452 | break; |
462 | break; |
453 | } // EOF switch(Id) |
463 | } // EOF switch(Id) |
454 | Update_GPSData(); |
464 | Update_GPSData(); |
455 | break; |
465 | break; |
456 | 466 | ||
457 | default: |
467 | default: |
458 | break; |
468 | break; |
459 | } // EOF switch(class) |
469 | } // EOF switch(class) |
460 | 470 | ||
461 | // check generic msg filter |
471 | // check generic msg filter |
462 | if(UbxMsg.Status != NEWDATA) |
472 | if(UbxMsg.Status != NEWDATA) |
463 | { // msg buffer is free |
473 | { // msg buffer is free |
464 | if(((UbxMsg.Hdr.Class&UbxMsg.ClassMask) == (RxHdr.Class&UbxMsg.ClassMask)) && ((UbxMsg.Hdr.Id&UbxMsg.IdMask) == (RxHdr.Id&UbxMsg.IdMask))) |
474 | if(((UbxMsg.Hdr.Class&UbxMsg.ClassMask) == (RxHdr.Class&UbxMsg.ClassMask)) && ((UbxMsg.Hdr.Id&UbxMsg.IdMask) == (RxHdr.Id&UbxMsg.IdMask))) |
465 | { // msg matches to the filter criteria |
475 | { // msg matches to the filter criteria |
466 | UbxMsg.Status = INVALID; |
476 | UbxMsg.Status = INVALID; |
467 | UbxMsg.Hdr.Class = RxHdr.Class; |
477 | UbxMsg.Hdr.Class = RxHdr.Class; |
468 | UbxMsg.Hdr.Id = RxHdr.Id; |
478 | UbxMsg.Hdr.Id = RxHdr.Id; |
469 | UbxMsg.Hdr.Length = RxHdr.Length; |
479 | UbxMsg.Hdr.Length = RxHdr.Length; |
470 | if(UbxMsg.Hdr.Length <= UBX_MSG_DATA_SIZE) |
480 | if(UbxMsg.Hdr.Length <= UBX_MSG_DATA_SIZE) |
471 | { // copy data block |
481 | { // copy data block |
472 | memcpy(UbxMsg.Data, RxData, RxHdr.Length); |
482 | memcpy(UbxMsg.Data, RxData, RxHdr.Length); |
473 | UbxMsg.Status = NEWDATA; |
483 | UbxMsg.Status = NEWDATA; |
474 | } |
484 | } |
475 | } // EOF filter matches |
485 | } // EOF filter matches |
476 | } // EOF != INVALID |
486 | } // EOF != INVALID |
477 | }// EOF crc ok |
487 | }// EOF crc ok |
478 | ubxState = UBXSTATE_IDLE; // ready to parse new data |
488 | ubxState = UBXSTATE_IDLE; // ready to parse new data |
479 | break; |
489 | break; |
480 | 490 | ||
481 | default: // unknown ubx state |
491 | default: // unknown ubx state |
482 | ubxState = UBXSTATE_IDLE; |
492 | ubxState = UBXSTATE_IDLE; |
483 | break; |
493 | break; |
484 | 494 | ||
485 | } |
495 | } |
486 | } |
496 | } |
487 | 497 | ||
488 | u8 UBX_CreateMsg(Buffer_t* pBuff, u8* pData, u16 Len) |
498 | u8 UBX_CreateMsg(Buffer_t* pBuff, u8* pData, u16 Len) |
489 | { |
499 | { |
490 | u16 i; |
500 | u16 i; |
491 | u8 cka = 0, ckb = 0; |
501 | u8 cka = 0, ckb = 0; |
492 | // check if buffer is available |
502 | // check if buffer is available |
493 | if(pBuff->Locked == TRUE) return(0); |
503 | if(pBuff->Locked == TRUE) return(0); |
494 | // check if buffer size is sufficient |
504 | // check if buffer size is sufficient |
495 | if(pBuff->Size < 8 + Len) return(0); |
505 | if(pBuff->Size < 8 + Len) return(0); |
496 | // lock the buffer |
506 | // lock the buffer |
497 | pBuff->Locked = TRUE; |
507 | pBuff->Locked = TRUE; |
498 | // start at begin |
508 | // start at begin |
499 | pBuff->Position = 0; |
509 | pBuff->Position = 0; |
500 | pBuff->pData[pBuff->Position++] = UBX_SYNC1_CHAR; |
510 | pBuff->pData[pBuff->Position++] = UBX_SYNC1_CHAR; |
501 | pBuff->pData[pBuff->Position++] = UBX_SYNC2_CHAR; |
511 | pBuff->pData[pBuff->Position++] = UBX_SYNC2_CHAR; |
502 | for(i=0;i<Len;i++) |
512 | for(i=0;i<Len;i++) |
503 | { |
513 | { |
504 | pBuff->pData[pBuff->Position++] = pData[i]; |
514 | pBuff->pData[pBuff->Position++] = pData[i]; |
505 | } |
515 | } |
506 | // calculate checksum |
516 | // calculate checksum |
507 | for(i=2;i<pBuff->Position;i++) |
517 | for(i=2;i<pBuff->Position;i++) |
508 | { |
518 | { |
509 | cka += pBuff->pData[i]; |
519 | cka += pBuff->pData[i]; |
510 | ckb += cka; |
520 | ckb += cka; |
511 | } |
521 | } |
512 | pBuff->pData[pBuff->Position++] = cka; |
522 | pBuff->pData[pBuff->Position++] = cka; |
513 | pBuff->pData[pBuff->Position++] = ckb; |
523 | pBuff->pData[pBuff->Position++] = ckb; |
514 | pBuff->DataBytes = pBuff->Position; |
524 | pBuff->DataBytes = pBuff->Position; |
515 | pBuff->Position = 0; // reset buffer position for transmision |
525 | pBuff->Position = 0; // reset buffer position for transmision |
516 | return(1); |
526 | return(1); |
517 | } |
527 | } |
518 | /* |
528 | /* |
519 | switch(ubxclass) |
529 | switch(ubxclass) |
520 | { |
530 | { |
521 | case UBX_CLASS_NAV: |
531 | case UBX_CLASS_NAV: |
522 | switch(ubxid) |
532 | switch(ubxid) |
523 | { |
533 | { |
524 | case UBX_ID_POSLLH: // geodetic position |
534 | case UBX_ID_POSLLH: // geodetic position |
525 | ubxSp = (u8 *)&UbxPosLlh; // data start pointer |
535 | ubxSp = (u8 *)&UbxPosLlh; // data start pointer |
526 | ubxEp = (u8 *)(&UbxPosLlh + 1); // data end pointer |
536 | ubxEp = (u8 *)(&UbxPosLlh + 1); // data end pointer |
527 | ubxStP = (u8 *)&UbxPosLlh.Status; // status pointer |
537 | ubxStP = (u8 *)&UbxPosLlh.Status; // status pointer |
528 | break; |
538 | break; |
529 | |
539 | |
530 | case UBX_ID_SOL: // navigation solution |
540 | case UBX_ID_SOL: // navigation solution |
531 | ubxSp = (u8 *)&UbxSol; // data start pointer |
541 | ubxSp = (u8 *)&UbxSol; // data start pointer |
532 | ubxEp = (u8 *)(&UbxSol + 1); // data end pointer |
542 | ubxEp = (u8 *)(&UbxSol + 1); // data end pointer |
533 | ubxStP = (u8 *)&UbxSol.Status; // status pointer |
543 | ubxStP = (u8 *)&UbxSol.Status; // status pointer |
534 | break; |
544 | break; |
535 | |
545 | |
536 | case UBX_ID_VELNED: // velocity vector in tangent plane |
546 | case UBX_ID_VELNED: // velocity vector in tangent plane |
537 | ubxSp = (u8 *)&UbxVelNed; // data start pointer |
547 | ubxSp = (u8 *)&UbxVelNed; // data start pointer |
538 | ubxEp = (u8 *)(&UbxVelNed + 1); // data end pointer |
548 | ubxEp = (u8 *)(&UbxVelNed + 1); // data end pointer |
539 | ubxStP = (u8 *)&UbxVelNed.Status; // status pointer |
549 | ubxStP = (u8 *)&UbxVelNed.Status; // status pointer |
540 | break; |
550 | break; |
541 | |
551 | |
542 | default: // unsupported identifier |
552 | default: // unsupported identifier |
543 | ubxState = UBXSTATE_IDLE; |
553 | ubxState = UBXSTATE_IDLE; |
544 | return; |
554 | return; |
545 | } |
555 | } |
546 | break; |
556 | break; |
547 | 557 | ||
548 | default: // other classes |
558 | default: // other classes |
549 | if(UbxMsg.Status == NEWDATA) ubxState = UBXSTATE_IDLE; |
559 | if(UbxMsg.Status == NEWDATA) ubxState = UBXSTATE_IDLE; |
550 | else if(((UbxMsg.Hdr.Class&UbxMsg.ClassMask) == (ubxclass&UbxMsg.ClassMask)) && ((UbxMsg.Hdr.Id&UbxMsg.IdMask) == (ubxid&UbxMsg.IdMask))) |
560 | else if(((UbxMsg.Hdr.Class&UbxMsg.ClassMask) == (ubxclass&UbxMsg.ClassMask)) && ((UbxMsg.Hdr.Id&UbxMsg.IdMask) == (ubxid&UbxMsg.IdMask))) |
551 | { // buffer is free and message matches to filter criteria |
561 | { // buffer is free and message matches to filter criteria |
552 | UbxMsg.Status = INVALID; |
562 | UbxMsg.Status = INVALID; |
553 | UbxMsg.Hdr.Class = ubxclass; |
563 | UbxMsg.Hdr.Class = ubxclass; |
554 | UbxMsg.Hdr.Id = ubxid; |
564 | UbxMsg.Hdr.Id = ubxid; |
555 | UbxMsg.Hdr.Length = msglen; |
565 | UbxMsg.Hdr.Length = msglen; |
556 | ubxSp = (u8 *)&(UbxMsg.Data); // data start pointer |
566 | ubxSp = (u8 *)&(UbxMsg.Data); // data start pointer |
557 | ubxEp = (u8 *)(&UbxMsg + 1); // data end pointer |
567 | ubxEp = (u8 *)(&UbxMsg + 1); // data end pointer |
558 | ubxStP = (u8 *)&UbxMsg.Status; // status pointer |
568 | ubxStP = (u8 *)&UbxMsg.Status; // status pointer |
559 | } |
569 | } |
560 | else ubxState = UBXSTATE_IDLE; |
570 | else ubxState = UBXSTATE_IDLE; |
561 | break; |
571 | break; |
562 | } |
572 | } |
563 | */ |
573 | */ |
564 | 574 | ||
565 | 575 |