Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Fork of lib_gps by
gps.cpp@10:007840923181, 2017-07-24 (annotated)
- Committer:
- shaunkrnelson
- Date:
- Mon Jul 24 10:56:33 2017 -0400
- Revision:
- 10:007840923181
- Parent:
- 9:c7bd750b4fc9
- Child:
- 11:caeed886e2ed
Backed out changeset c7bd750b4fc9
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
dudmuck | 0:0bd73064b7f6 | 1 | #include "mbed.h" |
dudmuck | 0:0bd73064b7f6 | 2 | #include "gps.h" |
dudmuck | 0:0bd73064b7f6 | 3 | |
dudmuck | 1:2f5fbb33ae8b | 4 | #define LAT_UNFIXED 0xaaaaa9 |
dudmuck | 1:2f5fbb33ae8b | 5 | #define LONG_UNFIXED 0x355554e |
dudmuck | 1:2f5fbb33ae8b | 6 | |
dudmuck | 0:0bd73064b7f6 | 7 | const char NmeaDataTypeGPGGA[] = "GPGGA"; |
dudmuck | 0:0bd73064b7f6 | 8 | //const char NmeaDataTypeGPGSA[] = "GPGSA"; |
dudmuck | 0:0bd73064b7f6 | 9 | //const char NmeaDataTypeGPGSV[] = "GPGSV"; |
dudmuck | 0:0bd73064b7f6 | 10 | const char NmeaDataTypeGPRMC[] = "GPRMC"; |
dudmuck | 0:0bd73064b7f6 | 11 | |
dudmuck | 0:0bd73064b7f6 | 12 | /* Value used for the conversion of the position from DMS to decimal */ |
dudmuck | 0:0bd73064b7f6 | 13 | const int32_t MaxNorthPosition = 8388607; // 2^23 - 1 |
dudmuck | 0:0bd73064b7f6 | 14 | const int32_t MaxSouthPosition = 8388608; // -2^23 |
dudmuck | 0:0bd73064b7f6 | 15 | const int32_t MaxEastPosition = 8388607; // 2^23 - 1 |
dudmuck | 0:0bd73064b7f6 | 16 | const int32_t MaxWestPosition = 8388608; // -2^23 |
dudmuck | 0:0bd73064b7f6 | 17 | |
dudmuck | 2:b531881123bf | 18 | //InterruptIn pps_pin(PC_5); |
dudmuck | 0:0bd73064b7f6 | 19 | |
dudmuck | 2:b531881123bf | 20 | |
dudmuck | 2:b531881123bf | 21 | GPS::GPS(PinName uart_tx, PinName uart_rx, PinName en) : m_uart(uart_tx, uart_rx), m_en_pin(en) |
dudmuck | 0:0bd73064b7f6 | 22 | { |
dudmuck | 1:2f5fbb33ae8b | 23 | have_fix = false; |
shaunkrnelson |
6:9dfe135334c9 | 24 | uart_rx_count = 0; |
dudmuck | 1:2f5fbb33ae8b | 25 | } |
dudmuck | 0:0bd73064b7f6 | 26 | |
dudmuck | 0:0bd73064b7f6 | 27 | GPS::~GPS() |
dudmuck | 0:0bd73064b7f6 | 28 | { |
dudmuck | 0:0bd73064b7f6 | 29 | } |
dudmuck | 0:0bd73064b7f6 | 30 | |
dudmuck | 2:b531881123bf | 31 | /*void GPS::pps() |
dudmuck | 0:0bd73064b7f6 | 32 | { |
dudmuck | 0:0bd73064b7f6 | 33 | pps_occurred = true; |
dudmuck | 2:b531881123bf | 34 | }*/ |
dudmuck | 0:0bd73064b7f6 | 35 | |
dudmuck | 0:0bd73064b7f6 | 36 | void GPS::on_uart_rx() |
dudmuck | 0:0bd73064b7f6 | 37 | { |
dudmuck | 0:0bd73064b7f6 | 38 | //uint8_t *len = &rx_buf_lens[rx_bufs_in_idx]; |
dudmuck | 0:0bd73064b7f6 | 39 | uint8_t len = rx_buf_lens[rx_bufs_in_idx]; |
dudmuck | 0:0bd73064b7f6 | 40 | char ch; |
dudmuck | 0:0bd73064b7f6 | 41 | |
dudmuck | 0:0bd73064b7f6 | 42 | do { |
dudmuck | 2:b531881123bf | 43 | ch = m_uart.getc(); |
dudmuck | 0:0bd73064b7f6 | 44 | |
dudmuck | 0:0bd73064b7f6 | 45 | if (ch != '$') { |
dudmuck | 0:0bd73064b7f6 | 46 | if (len < RX_BUF_SIZE) { |
dudmuck | 0:0bd73064b7f6 | 47 | rx_bufs[rx_bufs_in_idx][len] = ch; |
dudmuck | 0:0bd73064b7f6 | 48 | rx_buf_lens[rx_bufs_in_idx]++; |
shaunkrnelson |
6:9dfe135334c9 | 49 | } else |
shaunkrnelson |
6:9dfe135334c9 | 50 | printf("S"); |
shaunkrnelson |
6:9dfe135334c9 | 51 | } else if (len != 0) { |
shaunkrnelson |
6:9dfe135334c9 | 52 | if(verbose) |
shaunkrnelson |
6:9dfe135334c9 | 53 | printf("$ at %d\r\n", len); |
shaunkrnelson |
6:9dfe135334c9 | 54 | } |
dudmuck | 0:0bd73064b7f6 | 55 | |
dudmuck | 0:0bd73064b7f6 | 56 | if (ch == '\n') { |
dudmuck | 0:0bd73064b7f6 | 57 | rx_bufs[rx_bufs_in_idx][len] = 0; // null terminate |
shaunkrnelson |
6:9dfe135334c9 | 58 | |
shaunkrnelson |
6:9dfe135334c9 | 59 | #if 0 |
shaunkrnelson |
6:9dfe135334c9 | 60 | if(verbose) |
shaunkrnelson |
6:9dfe135334c9 | 61 | { |
shaunkrnelson |
6:9dfe135334c9 | 62 | printf("on_uart_rx: buf=%d, len=%d\r\n", rx_bufs_in_idx, len); |
shaunkrnelson |
6:9dfe135334c9 | 63 | } |
shaunkrnelson |
6:9dfe135334c9 | 64 | #endif |
shaunkrnelson |
6:9dfe135334c9 | 65 | |
dudmuck | 0:0bd73064b7f6 | 66 | if (++rx_bufs_in_idx == NUM_RX_BUFS) |
dudmuck | 0:0bd73064b7f6 | 67 | rx_bufs_in_idx = 0; |
dudmuck | 0:0bd73064b7f6 | 68 | /* just let it overflow -- if (rx_bufs_in_idx == rx_bufs_out_idx) |
dudmuck | 0:0bd73064b7f6 | 69 | printf("gps overflow\r\n");*/ |
dudmuck | 0:0bd73064b7f6 | 70 | rx_buf_lens[rx_bufs_in_idx] = 0; |
shaunkrnelson |
6:9dfe135334c9 | 71 | uart_rx_count++; |
dudmuck | 0:0bd73064b7f6 | 72 | } |
dudmuck | 2:b531881123bf | 73 | } while (m_uart.readable()); |
dudmuck | 0:0bd73064b7f6 | 74 | } |
dudmuck | 0:0bd73064b7f6 | 75 | |
dudmuck | 0:0bd73064b7f6 | 76 | void GPS::init() |
dudmuck | 0:0bd73064b7f6 | 77 | { |
dudmuck | 0:0bd73064b7f6 | 78 | rx_bufs_in_idx = 0; |
dudmuck | 0:0bd73064b7f6 | 79 | rx_buf_lens[rx_bufs_in_idx] = 0; |
dudmuck | 0:0bd73064b7f6 | 80 | rx_bufs_out_idx = 0; |
dudmuck | 0:0bd73064b7f6 | 81 | |
dudmuck | 0:0bd73064b7f6 | 82 | //gps_uart.baud(57600); |
shaunkrnelson | 10:007840923181 | 83 | m_uart.attach(this, &GPS::on_uart_rx); |
dudmuck | 0:0bd73064b7f6 | 84 | |
dudmuck | 2:b531881123bf | 85 | //pps_pin.rise(this, &GPS::pps); |
dudmuck | 0:0bd73064b7f6 | 86 | } |
dudmuck | 0:0bd73064b7f6 | 87 | |
dudmuck | 0:0bd73064b7f6 | 88 | void GPS::enable(bool en) |
dudmuck | 0:0bd73064b7f6 | 89 | { |
dudmuck | 0:0bd73064b7f6 | 90 | if (en) { |
dudmuck | 3:03d7275dc4fd | 91 | if (en_invert) |
dudmuck | 3:03d7275dc4fd | 92 | m_en_pin = 0; |
dudmuck | 3:03d7275dc4fd | 93 | else |
dudmuck | 3:03d7275dc4fd | 94 | m_en_pin = 1; |
dudmuck | 0:0bd73064b7f6 | 95 | } else { |
dudmuck | 3:03d7275dc4fd | 96 | if (en_invert) |
dudmuck | 3:03d7275dc4fd | 97 | m_en_pin = 1; |
dudmuck | 3:03d7275dc4fd | 98 | else |
dudmuck | 3:03d7275dc4fd | 99 | m_en_pin = 0; |
dudmuck | 0:0bd73064b7f6 | 100 | } |
dudmuck | 1:2f5fbb33ae8b | 101 | |
dudmuck | 1:2f5fbb33ae8b | 102 | // reset current string index |
dudmuck | 1:2f5fbb33ae8b | 103 | rx_buf_lens[rx_bufs_in_idx] = 0; |
dudmuck | 0:0bd73064b7f6 | 104 | } |
dudmuck | 0:0bd73064b7f6 | 105 | |
dudmuck | 0:0bd73064b7f6 | 106 | bool GPS::enabled() |
dudmuck | 0:0bd73064b7f6 | 107 | { |
dudmuck | 3:03d7275dc4fd | 108 | if (en_invert) |
dudmuck | 3:03d7275dc4fd | 109 | return !m_en_pin.read(); |
dudmuck | 3:03d7275dc4fd | 110 | else |
dudmuck | 3:03d7275dc4fd | 111 | return m_en_pin.read(); |
dudmuck | 0:0bd73064b7f6 | 112 | } |
dudmuck | 0:0bd73064b7f6 | 113 | |
dudmuck | 0:0bd73064b7f6 | 114 | /*char GPS::Nibble2HexChar( char a ); |
dudmuck | 0:0bd73064b7f6 | 115 | { |
dudmuck | 0:0bd73064b7f6 | 116 | if( a < 10 ) |
dudmuck | 0:0bd73064b7f6 | 117 | { |
dudmuck | 0:0bd73064b7f6 | 118 | return '0' + a; |
dudmuck | 0:0bd73064b7f6 | 119 | } |
dudmuck | 0:0bd73064b7f6 | 120 | else if( a < 16 ) |
dudmuck | 0:0bd73064b7f6 | 121 | { |
dudmuck | 0:0bd73064b7f6 | 122 | return 'A' + ( a - 10 ); |
dudmuck | 0:0bd73064b7f6 | 123 | } |
dudmuck | 0:0bd73064b7f6 | 124 | else |
dudmuck | 0:0bd73064b7f6 | 125 | { |
dudmuck | 0:0bd73064b7f6 | 126 | return '?'; |
dudmuck | 0:0bd73064b7f6 | 127 | } |
dudmuck | 0:0bd73064b7f6 | 128 | }*/ |
dudmuck | 0:0bd73064b7f6 | 129 | |
dudmuck | 0:0bd73064b7f6 | 130 | int GPS::NmeaChecksum( char *nmeaStr, uint8_t nmeaStrSize, char * checksum ) |
dudmuck | 0:0bd73064b7f6 | 131 | { |
dudmuck | 0:0bd73064b7f6 | 132 | int i = 0; |
dudmuck | 0:0bd73064b7f6 | 133 | uint8_t checkNum = 0; |
dudmuck | 0:0bd73064b7f6 | 134 | |
dudmuck | 0:0bd73064b7f6 | 135 | // Check input parameters |
dudmuck | 0:0bd73064b7f6 | 136 | if( ( nmeaStr == NULL ) || ( checksum == NULL ) || ( nmeaStrSize <= 1 ) ) |
dudmuck | 0:0bd73064b7f6 | 137 | { |
dudmuck | 0:0bd73064b7f6 | 138 | return -1; |
dudmuck | 0:0bd73064b7f6 | 139 | } |
dudmuck | 0:0bd73064b7f6 | 140 | |
dudmuck | 0:0bd73064b7f6 | 141 | // Skip the first '$' if necessary |
dudmuck | 0:0bd73064b7f6 | 142 | if( nmeaStr[i] == '$' ) |
dudmuck | 0:0bd73064b7f6 | 143 | { |
dudmuck | 0:0bd73064b7f6 | 144 | i += 1; |
dudmuck | 0:0bd73064b7f6 | 145 | } |
dudmuck | 0:0bd73064b7f6 | 146 | |
dudmuck | 0:0bd73064b7f6 | 147 | // XOR until '*' or max length is reached |
dudmuck | 0:0bd73064b7f6 | 148 | while( nmeaStr[i] != '*' ) |
dudmuck | 0:0bd73064b7f6 | 149 | { |
dudmuck | 0:0bd73064b7f6 | 150 | checkNum ^= nmeaStr[i]; |
dudmuck | 0:0bd73064b7f6 | 151 | i += 1; |
dudmuck | 0:0bd73064b7f6 | 152 | if( i >= nmeaStrSize ) |
dudmuck | 0:0bd73064b7f6 | 153 | { |
dudmuck | 0:0bd73064b7f6 | 154 | return -1; |
dudmuck | 0:0bd73064b7f6 | 155 | } |
dudmuck | 0:0bd73064b7f6 | 156 | } |
dudmuck | 0:0bd73064b7f6 | 157 | |
dudmuck | 0:0bd73064b7f6 | 158 | // Convert checksum value to 2 hexadecimal characters |
dudmuck | 0:0bd73064b7f6 | 159 | /*checksum[0] = Nibble2HexChar( checkNum / 16 ); // upper nibble |
dudmuck | 0:0bd73064b7f6 | 160 | checksum[1] = Nibble2HexChar( checkNum % 16 ); // lower nibble |
dudmuck | 0:0bd73064b7f6 | 161 | */ |
dudmuck | 0:0bd73064b7f6 | 162 | sprintf(checksum, "%02X", checkNum); |
dudmuck | 0:0bd73064b7f6 | 163 | |
dudmuck | 0:0bd73064b7f6 | 164 | return i + 1; |
dudmuck | 0:0bd73064b7f6 | 165 | } |
dudmuck | 0:0bd73064b7f6 | 166 | |
dudmuck | 0:0bd73064b7f6 | 167 | bool GPS::NmeaValidateChecksum(int idx) |
dudmuck | 0:0bd73064b7f6 | 168 | { |
dudmuck | 0:0bd73064b7f6 | 169 | int checksumIndex; |
dudmuck | 0:0bd73064b7f6 | 170 | char checksum[4]; |
dudmuck | 0:0bd73064b7f6 | 171 | char *NmeaString = rx_bufs[idx]; |
dudmuck | 0:0bd73064b7f6 | 172 | |
dudmuck | 0:0bd73064b7f6 | 173 | checksumIndex = NmeaChecksum( NmeaString, rx_buf_lens[idx], checksum ); |
dudmuck | 0:0bd73064b7f6 | 174 | |
dudmuck | 0:0bd73064b7f6 | 175 | // could we calculate a verification checksum ? |
dudmuck | 0:0bd73064b7f6 | 176 | if( checksumIndex < 0 ) |
dudmuck | 0:0bd73064b7f6 | 177 | return false; |
dudmuck | 0:0bd73064b7f6 | 178 | |
dudmuck | 0:0bd73064b7f6 | 179 | // check if there are enough char in the serial buffer to read checksum |
dudmuck | 0:0bd73064b7f6 | 180 | if( checksumIndex >= ( rx_buf_lens[idx] - 2 ) ) |
dudmuck | 0:0bd73064b7f6 | 181 | return false; |
dudmuck | 0:0bd73064b7f6 | 182 | |
dudmuck | 0:0bd73064b7f6 | 183 | // check the checksum |
dudmuck | 0:0bd73064b7f6 | 184 | if( ( NmeaString[checksumIndex] == checksum[0] ) && ( NmeaString[checksumIndex + 1] == checksum[1] ) ) |
dudmuck | 0:0bd73064b7f6 | 185 | { |
dudmuck | 0:0bd73064b7f6 | 186 | return true; |
dudmuck | 0:0bd73064b7f6 | 187 | } |
dudmuck | 0:0bd73064b7f6 | 188 | else |
dudmuck | 0:0bd73064b7f6 | 189 | return false; |
dudmuck | 0:0bd73064b7f6 | 190 | } |
dudmuck | 0:0bd73064b7f6 | 191 | |
dudmuck | 0:0bd73064b7f6 | 192 | void GPS::ConvertPositionFromStringToNumerical( ) |
dudmuck | 0:0bd73064b7f6 | 193 | { |
dudmuck | 0:0bd73064b7f6 | 194 | int i; |
dudmuck | 0:0bd73064b7f6 | 195 | |
dudmuck | 0:0bd73064b7f6 | 196 | double valueTmp1; |
dudmuck | 0:0bd73064b7f6 | 197 | double valueTmp2; |
dudmuck | 0:0bd73064b7f6 | 198 | double valueTmp3; |
dudmuck | 0:0bd73064b7f6 | 199 | double valueTmp4; |
dudmuck | 0:0bd73064b7f6 | 200 | |
shaunkrnelson |
6:9dfe135334c9 | 201 | |
dudmuck | 0:0bd73064b7f6 | 202 | // Convert the latitude from ASCII to uint8_t values |
dudmuck | 0:0bd73064b7f6 | 203 | for( i = 0 ; i < 10 ; i++ ) |
dudmuck | 0:0bd73064b7f6 | 204 | { |
dudmuck | 0:0bd73064b7f6 | 205 | NmeaGpsData.NmeaLatitude[i] = NmeaGpsData.NmeaLatitude[i] & 0xF; |
dudmuck | 0:0bd73064b7f6 | 206 | } |
dudmuck | 0:0bd73064b7f6 | 207 | // Convert latitude from degree/minute/second (DMS) format into decimal |
dudmuck | 0:0bd73064b7f6 | 208 | valueTmp1 = ( double )NmeaGpsData.NmeaLatitude[0] * 10.0 + ( double )NmeaGpsData.NmeaLatitude[1]; |
dudmuck | 0:0bd73064b7f6 | 209 | valueTmp2 = ( double )NmeaGpsData.NmeaLatitude[2] * 10.0 + ( double )NmeaGpsData.NmeaLatitude[3]; |
dudmuck | 0:0bd73064b7f6 | 210 | valueTmp3 = ( double )NmeaGpsData.NmeaLatitude[5] * 1000.0 + ( double )NmeaGpsData.NmeaLatitude[6] * 100.0 + |
dudmuck | 0:0bd73064b7f6 | 211 | ( double )NmeaGpsData.NmeaLatitude[7] * 10.0 + ( double )NmeaGpsData.NmeaLatitude[8]; |
dudmuck | 0:0bd73064b7f6 | 212 | |
dudmuck | 0:0bd73064b7f6 | 213 | Latitude = valueTmp1 + ( ( valueTmp2 + ( valueTmp3 * 0.0001 ) ) / 60.0 ); |
dudmuck | 0:0bd73064b7f6 | 214 | |
dudmuck | 0:0bd73064b7f6 | 215 | if( NmeaGpsData.NmeaLatitudePole[0] == 'S' ) |
dudmuck | 0:0bd73064b7f6 | 216 | { |
dudmuck | 0:0bd73064b7f6 | 217 | Latitude *= -1; |
dudmuck | 0:0bd73064b7f6 | 218 | } |
dudmuck | 0:0bd73064b7f6 | 219 | |
dudmuck | 0:0bd73064b7f6 | 220 | // Convert the longitude from ASCII to uint8_t values |
dudmuck | 0:0bd73064b7f6 | 221 | for( i = 0 ; i < 10 ; i++ ) |
dudmuck | 0:0bd73064b7f6 | 222 | { |
dudmuck | 0:0bd73064b7f6 | 223 | NmeaGpsData.NmeaLongitude[i] = NmeaGpsData.NmeaLongitude[i] & 0xF; |
dudmuck | 0:0bd73064b7f6 | 224 | } |
dudmuck | 0:0bd73064b7f6 | 225 | // Convert longitude from degree/minute/second (DMS) format into decimal |
dudmuck | 0:0bd73064b7f6 | 226 | valueTmp1 = ( double )NmeaGpsData.NmeaLongitude[0] * 100.0 + ( double )NmeaGpsData.NmeaLongitude[1] * 10.0 + ( double )NmeaGpsData.NmeaLongitude[2]; |
dudmuck | 0:0bd73064b7f6 | 227 | valueTmp2 = ( double )NmeaGpsData.NmeaLongitude[3] * 10.0 + ( double )NmeaGpsData.NmeaLongitude[4]; |
dudmuck | 0:0bd73064b7f6 | 228 | valueTmp3 = ( double )NmeaGpsData.NmeaLongitude[6] * 1000.0 + ( double )NmeaGpsData.NmeaLongitude[7] * 100; |
dudmuck | 0:0bd73064b7f6 | 229 | valueTmp4 = ( double )NmeaGpsData.NmeaLongitude[8] * 10.0 + ( double )NmeaGpsData.NmeaLongitude[9]; |
dudmuck | 0:0bd73064b7f6 | 230 | |
dudmuck | 0:0bd73064b7f6 | 231 | Longitude = valueTmp1 + ( valueTmp2 / 60.0 ) + ( ( ( valueTmp3 + valueTmp4 ) * 0.0001 ) / 60.0 ); |
dudmuck | 0:0bd73064b7f6 | 232 | |
dudmuck | 0:0bd73064b7f6 | 233 | if( NmeaGpsData.NmeaLongitudePole[0] == 'W' ) |
dudmuck | 0:0bd73064b7f6 | 234 | { |
dudmuck | 0:0bd73064b7f6 | 235 | Longitude *= -1; |
dudmuck | 0:0bd73064b7f6 | 236 | } |
dudmuck | 0:0bd73064b7f6 | 237 | |
dudmuck | 0:0bd73064b7f6 | 238 | //printf("DD %f, %f\r\n", Latitude, Longitude); |
dudmuck | 0:0bd73064b7f6 | 239 | } |
dudmuck | 0:0bd73064b7f6 | 240 | |
dudmuck | 0:0bd73064b7f6 | 241 | void GPS::ConvertPositionIntoBinary( ) |
dudmuck | 0:0bd73064b7f6 | 242 | { |
dudmuck | 0:0bd73064b7f6 | 243 | long double temp; |
dudmuck | 0:0bd73064b7f6 | 244 | |
dudmuck | 0:0bd73064b7f6 | 245 | if( Latitude >= 0 ) // North |
dudmuck | 0:0bd73064b7f6 | 246 | { |
dudmuck | 0:0bd73064b7f6 | 247 | temp = Latitude * MaxNorthPosition; |
dudmuck | 0:0bd73064b7f6 | 248 | LatitudeBinary = temp / 90; |
dudmuck | 0:0bd73064b7f6 | 249 | } |
dudmuck | 0:0bd73064b7f6 | 250 | else // South |
dudmuck | 0:0bd73064b7f6 | 251 | { |
dudmuck | 0:0bd73064b7f6 | 252 | temp = Latitude * MaxSouthPosition; |
dudmuck | 0:0bd73064b7f6 | 253 | LatitudeBinary = temp / 90; |
dudmuck | 0:0bd73064b7f6 | 254 | } |
dudmuck | 0:0bd73064b7f6 | 255 | |
dudmuck | 0:0bd73064b7f6 | 256 | if( Longitude >= 0 ) // East |
dudmuck | 0:0bd73064b7f6 | 257 | { |
dudmuck | 0:0bd73064b7f6 | 258 | temp = Longitude * MaxEastPosition; |
dudmuck | 0:0bd73064b7f6 | 259 | LongitudeBinary = temp / 180; |
dudmuck | 0:0bd73064b7f6 | 260 | } |
dudmuck | 0:0bd73064b7f6 | 261 | else // West |
dudmuck | 0:0bd73064b7f6 | 262 | { |
dudmuck | 0:0bd73064b7f6 | 263 | temp = Longitude * MaxWestPosition; |
dudmuck | 0:0bd73064b7f6 | 264 | LongitudeBinary = temp / 180; |
dudmuck | 0:0bd73064b7f6 | 265 | } |
dudmuck | 1:2f5fbb33ae8b | 266 | |
dudmuck | 1:2f5fbb33ae8b | 267 | if (LatitudeBinary == LAT_UNFIXED && LongitudeBinary == LONG_UNFIXED) |
dudmuck | 1:2f5fbb33ae8b | 268 | have_fix = false; |
dudmuck | 1:2f5fbb33ae8b | 269 | else |
shaunkrnelson |
7:44cb21f05dcc | 270 | { |
dudmuck | 1:2f5fbb33ae8b | 271 | have_fix = true; |
shaunkrnelson |
7:44cb21f05dcc | 272 | if(verbose == true) |
shaunkrnelson |
7:44cb21f05dcc | 273 | printf("GPS: latitude=%f, longitude=%f\r\n", Latitude, Longitude); |
shaunkrnelson |
7:44cb21f05dcc | 274 | } |
dudmuck | 0:0bd73064b7f6 | 275 | } |
dudmuck | 0:0bd73064b7f6 | 276 | |
dudmuck | 0:0bd73064b7f6 | 277 | int GPS::ParseGPSData(int idx) |
dudmuck | 0:0bd73064b7f6 | 278 | { |
dudmuck | 0:0bd73064b7f6 | 279 | uint8_t i, j, fieldSize; |
dudmuck | 0:0bd73064b7f6 | 280 | char *NmeaString; |
dudmuck | 0:0bd73064b7f6 | 281 | |
dudmuck | 0:0bd73064b7f6 | 282 | if (NmeaValidateChecksum(idx) == false) { |
dudmuck | 0:0bd73064b7f6 | 283 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 284 | } |
dudmuck | 0:0bd73064b7f6 | 285 | |
dudmuck | 0:0bd73064b7f6 | 286 | NmeaString = rx_bufs[idx]; |
dudmuck | 1:2f5fbb33ae8b | 287 | |
dudmuck | 1:2f5fbb33ae8b | 288 | if (NmeaString[0] == 'P' && NmeaString[1] == 'M' && NmeaString[2] == 'T' && NmeaString[3] == 'K') { |
dudmuck | 1:2f5fbb33ae8b | 289 | /* anything useful from PMTK packets? */ |
dudmuck | 1:2f5fbb33ae8b | 290 | return SUCCESS; |
dudmuck | 1:2f5fbb33ae8b | 291 | } |
dudmuck | 1:2f5fbb33ae8b | 292 | |
dudmuck | 0:0bd73064b7f6 | 293 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 294 | i = 0; |
dudmuck | 0:0bd73064b7f6 | 295 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 296 | { |
dudmuck | 0:0bd73064b7f6 | 297 | if( fieldSize > 6 ) |
dudmuck | 0:0bd73064b7f6 | 298 | { |
dudmuck | 1:2f5fbb33ae8b | 299 | printf("gps parse:%s\r\n", NmeaString); |
dudmuck | 0:0bd73064b7f6 | 300 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 301 | } |
dudmuck | 0:0bd73064b7f6 | 302 | } |
dudmuck | 0:0bd73064b7f6 | 303 | |
dudmuck | 0:0bd73064b7f6 | 304 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 305 | { |
dudmuck | 0:0bd73064b7f6 | 306 | NmeaGpsData.NmeaDataType[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 307 | } |
dudmuck | 0:0bd73064b7f6 | 308 | // Parse the GPGGA data |
dudmuck | 0:0bd73064b7f6 | 309 | if( strncmp( ( const char* )NmeaGpsData.NmeaDataType, ( const char* )NmeaDataTypeGPGGA, 5 ) == 0 ) |
dudmuck | 0:0bd73064b7f6 | 310 | { |
shaunkrnelson |
7:44cb21f05dcc | 311 | if(verbose == true) |
shaunkrnelson |
7:44cb21f05dcc | 312 | printf("GPGAA: %s\r\n",NmeaString); |
shaunkrnelson |
7:44cb21f05dcc | 313 | |
dudmuck | 0:0bd73064b7f6 | 314 | // NmeaUtcTime |
dudmuck | 0:0bd73064b7f6 | 315 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 316 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 317 | { |
dudmuck | 0:0bd73064b7f6 | 318 | if( fieldSize > 11 ) |
dudmuck | 0:0bd73064b7f6 | 319 | { |
dudmuck | 0:0bd73064b7f6 | 320 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 321 | } |
dudmuck | 0:0bd73064b7f6 | 322 | } |
dudmuck | 0:0bd73064b7f6 | 323 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 324 | { |
dudmuck | 0:0bd73064b7f6 | 325 | NmeaGpsData.NmeaUtcTime[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 326 | } |
dudmuck | 0:0bd73064b7f6 | 327 | // NmeaLatitude |
dudmuck | 0:0bd73064b7f6 | 328 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 329 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 330 | { |
dudmuck | 0:0bd73064b7f6 | 331 | if( fieldSize > 10 ) |
dudmuck | 0:0bd73064b7f6 | 332 | { |
dudmuck | 0:0bd73064b7f6 | 333 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 334 | } |
dudmuck | 0:0bd73064b7f6 | 335 | } |
shaunkrnelson |
7:44cb21f05dcc | 336 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 337 | return FAIL; |
shaunkrnelson |
6:9dfe135334c9 | 338 | |
dudmuck | 0:0bd73064b7f6 | 339 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 340 | { |
dudmuck | 0:0bd73064b7f6 | 341 | NmeaGpsData.NmeaLatitude[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 342 | } |
dudmuck | 0:0bd73064b7f6 | 343 | // NmeaLatitudePole |
dudmuck | 0:0bd73064b7f6 | 344 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 345 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 346 | { |
dudmuck | 0:0bd73064b7f6 | 347 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 348 | { |
dudmuck | 0:0bd73064b7f6 | 349 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 350 | } |
dudmuck | 0:0bd73064b7f6 | 351 | } |
shaunkrnelson |
6:9dfe135334c9 | 352 | |
shaunkrnelson |
7:44cb21f05dcc | 353 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 354 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 355 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 356 | { |
dudmuck | 0:0bd73064b7f6 | 357 | NmeaGpsData.NmeaLatitudePole[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 358 | } |
dudmuck | 0:0bd73064b7f6 | 359 | // NmeaLongitude |
dudmuck | 0:0bd73064b7f6 | 360 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 361 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 362 | { |
dudmuck | 0:0bd73064b7f6 | 363 | if( fieldSize > 11 ) |
dudmuck | 0:0bd73064b7f6 | 364 | { |
dudmuck | 0:0bd73064b7f6 | 365 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 366 | } |
dudmuck | 0:0bd73064b7f6 | 367 | } |
shaunkrnelson |
7:44cb21f05dcc | 368 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 369 | return FAIL; |
shaunkrnelson |
6:9dfe135334c9 | 370 | |
dudmuck | 0:0bd73064b7f6 | 371 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 372 | { |
dudmuck | 0:0bd73064b7f6 | 373 | NmeaGpsData.NmeaLongitude[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 374 | } |
dudmuck | 0:0bd73064b7f6 | 375 | // NmeaLongitudePole |
dudmuck | 0:0bd73064b7f6 | 376 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 377 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 378 | { |
dudmuck | 0:0bd73064b7f6 | 379 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 380 | { |
dudmuck | 0:0bd73064b7f6 | 381 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 382 | } |
dudmuck | 0:0bd73064b7f6 | 383 | } |
shaunkrnelson |
6:9dfe135334c9 | 384 | |
shaunkrnelson |
7:44cb21f05dcc | 385 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 386 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 387 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 388 | { |
dudmuck | 0:0bd73064b7f6 | 389 | NmeaGpsData.NmeaLongitudePole[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 390 | } |
dudmuck | 0:0bd73064b7f6 | 391 | // NmeaFixQuality |
dudmuck | 0:0bd73064b7f6 | 392 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 393 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 394 | { |
dudmuck | 0:0bd73064b7f6 | 395 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 396 | { |
dudmuck | 0:0bd73064b7f6 | 397 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 398 | } |
dudmuck | 0:0bd73064b7f6 | 399 | } |
dudmuck | 0:0bd73064b7f6 | 400 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 401 | { |
dudmuck | 0:0bd73064b7f6 | 402 | NmeaGpsData.NmeaFixQuality[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 403 | } |
dudmuck | 0:0bd73064b7f6 | 404 | // NmeaSatelliteTracked |
dudmuck | 0:0bd73064b7f6 | 405 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 406 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 407 | { |
dudmuck | 0:0bd73064b7f6 | 408 | if( fieldSize > 3 ) |
dudmuck | 0:0bd73064b7f6 | 409 | { |
dudmuck | 0:0bd73064b7f6 | 410 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 411 | } |
dudmuck | 0:0bd73064b7f6 | 412 | } |
dudmuck | 0:0bd73064b7f6 | 413 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 414 | { |
dudmuck | 0:0bd73064b7f6 | 415 | NmeaGpsData.NmeaSatelliteTracked[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 416 | } |
dudmuck | 0:0bd73064b7f6 | 417 | // NmeaHorizontalDilution |
dudmuck | 0:0bd73064b7f6 | 418 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 419 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 420 | { |
dudmuck | 0:0bd73064b7f6 | 421 | if( fieldSize > 6 ) |
dudmuck | 0:0bd73064b7f6 | 422 | { |
dudmuck | 0:0bd73064b7f6 | 423 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 424 | } |
dudmuck | 0:0bd73064b7f6 | 425 | } |
dudmuck | 0:0bd73064b7f6 | 426 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 427 | { |
dudmuck | 0:0bd73064b7f6 | 428 | NmeaGpsData.NmeaHorizontalDilution[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 429 | } |
dudmuck | 0:0bd73064b7f6 | 430 | // NmeaAltitude |
dudmuck | 0:0bd73064b7f6 | 431 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 432 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 433 | { |
dudmuck | 0:0bd73064b7f6 | 434 | if( fieldSize > 8 ) |
dudmuck | 0:0bd73064b7f6 | 435 | { |
dudmuck | 0:0bd73064b7f6 | 436 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 437 | } |
dudmuck | 0:0bd73064b7f6 | 438 | } |
dudmuck | 0:0bd73064b7f6 | 439 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 440 | { |
dudmuck | 0:0bd73064b7f6 | 441 | NmeaGpsData.NmeaAltitude[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 442 | } |
dudmuck | 0:0bd73064b7f6 | 443 | // NmeaAltitudeUnit |
dudmuck | 0:0bd73064b7f6 | 444 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 445 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 446 | { |
dudmuck | 0:0bd73064b7f6 | 447 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 448 | { |
dudmuck | 0:0bd73064b7f6 | 449 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 450 | } |
dudmuck | 0:0bd73064b7f6 | 451 | } |
dudmuck | 0:0bd73064b7f6 | 452 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 453 | { |
dudmuck | 0:0bd73064b7f6 | 454 | NmeaGpsData.NmeaAltitudeUnit[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 455 | } |
dudmuck | 0:0bd73064b7f6 | 456 | // NmeaHeightGeoid |
dudmuck | 0:0bd73064b7f6 | 457 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 458 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 459 | { |
dudmuck | 0:0bd73064b7f6 | 460 | if( fieldSize > 8 ) |
dudmuck | 0:0bd73064b7f6 | 461 | { |
dudmuck | 0:0bd73064b7f6 | 462 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 463 | } |
dudmuck | 0:0bd73064b7f6 | 464 | } |
dudmuck | 0:0bd73064b7f6 | 465 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 466 | { |
dudmuck | 0:0bd73064b7f6 | 467 | NmeaGpsData.NmeaHeightGeoid[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 468 | } |
dudmuck | 0:0bd73064b7f6 | 469 | // NmeaHeightGeoidUnit |
dudmuck | 0:0bd73064b7f6 | 470 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 471 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 472 | { |
dudmuck | 0:0bd73064b7f6 | 473 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 474 | { |
dudmuck | 0:0bd73064b7f6 | 475 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 476 | } |
dudmuck | 0:0bd73064b7f6 | 477 | } |
dudmuck | 0:0bd73064b7f6 | 478 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 479 | { |
dudmuck | 0:0bd73064b7f6 | 480 | NmeaGpsData.NmeaHeightGeoidUnit[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 481 | } |
dudmuck | 0:0bd73064b7f6 | 482 | |
dudmuck | 0:0bd73064b7f6 | 483 | //FormatGpsData( ); |
dudmuck | 0:0bd73064b7f6 | 484 | ConvertPositionFromStringToNumerical( ); |
dudmuck | 0:0bd73064b7f6 | 485 | ConvertPositionIntoBinary( ); |
dudmuck | 0:0bd73064b7f6 | 486 | return SUCCESS; |
dudmuck | 0:0bd73064b7f6 | 487 | } |
dudmuck | 0:0bd73064b7f6 | 488 | else if ( strncmp( ( const char* )NmeaGpsData.NmeaDataType, ( const char* )NmeaDataTypeGPRMC, 5 ) == 0 ) |
dudmuck | 0:0bd73064b7f6 | 489 | { |
shaunkrnelson |
7:44cb21f05dcc | 490 | if(verbose == true) |
shaunkrnelson |
7:44cb21f05dcc | 491 | printf("GPMRC: %s\r\n", NmeaString); |
shaunkrnelson |
7:44cb21f05dcc | 492 | |
dudmuck | 0:0bd73064b7f6 | 493 | // NmeaUtcTime |
dudmuck | 0:0bd73064b7f6 | 494 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 495 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 496 | { |
dudmuck | 0:0bd73064b7f6 | 497 | if( fieldSize > 11 ) |
dudmuck | 0:0bd73064b7f6 | 498 | { |
dudmuck | 0:0bd73064b7f6 | 499 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 500 | } |
dudmuck | 0:0bd73064b7f6 | 501 | } |
dudmuck | 0:0bd73064b7f6 | 502 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 503 | { |
dudmuck | 0:0bd73064b7f6 | 504 | NmeaGpsData.NmeaUtcTime[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 505 | } |
dudmuck | 0:0bd73064b7f6 | 506 | // NmeaDataStatus |
dudmuck | 0:0bd73064b7f6 | 507 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 508 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 509 | { |
dudmuck | 0:0bd73064b7f6 | 510 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 511 | { |
dudmuck | 0:0bd73064b7f6 | 512 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 513 | } |
dudmuck | 0:0bd73064b7f6 | 514 | } |
shaunkrnelson |
7:44cb21f05dcc | 515 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 516 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 517 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 518 | { |
dudmuck | 0:0bd73064b7f6 | 519 | NmeaGpsData.NmeaDataStatus[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 520 | } |
shaunkrnelson |
6:9dfe135334c9 | 521 | |
shaunkrnelson |
6:9dfe135334c9 | 522 | if(NmeaGpsData.NmeaDataStatus[0] != 'A') |
shaunkrnelson |
6:9dfe135334c9 | 523 | return FAIL; |
shaunkrnelson |
6:9dfe135334c9 | 524 | // |
dudmuck | 0:0bd73064b7f6 | 525 | // NmeaLatitude |
dudmuck | 0:0bd73064b7f6 | 526 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 527 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 528 | { |
dudmuck | 0:0bd73064b7f6 | 529 | if( fieldSize > 10 ) |
dudmuck | 0:0bd73064b7f6 | 530 | { |
dudmuck | 0:0bd73064b7f6 | 531 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 532 | } |
dudmuck | 0:0bd73064b7f6 | 533 | } |
shaunkrnelson |
6:9dfe135334c9 | 534 | |
shaunkrnelson |
7:44cb21f05dcc | 535 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 536 | return FAIL; |
shaunkrnelson |
6:9dfe135334c9 | 537 | |
dudmuck | 0:0bd73064b7f6 | 538 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 539 | { |
dudmuck | 0:0bd73064b7f6 | 540 | NmeaGpsData.NmeaLatitude[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 541 | } |
dudmuck | 0:0bd73064b7f6 | 542 | // NmeaLatitudePole |
dudmuck | 0:0bd73064b7f6 | 543 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 544 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 545 | { |
dudmuck | 0:0bd73064b7f6 | 546 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 547 | { |
dudmuck | 0:0bd73064b7f6 | 548 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 549 | } |
dudmuck | 0:0bd73064b7f6 | 550 | } |
shaunkrnelson |
7:44cb21f05dcc | 551 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 552 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 553 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 554 | { |
dudmuck | 0:0bd73064b7f6 | 555 | NmeaGpsData.NmeaLatitudePole[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 556 | } |
dudmuck | 0:0bd73064b7f6 | 557 | // NmeaLongitude |
dudmuck | 0:0bd73064b7f6 | 558 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 559 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 560 | { |
dudmuck | 0:0bd73064b7f6 | 561 | if( fieldSize > 11 ) |
dudmuck | 0:0bd73064b7f6 | 562 | { |
dudmuck | 0:0bd73064b7f6 | 563 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 564 | } |
dudmuck | 0:0bd73064b7f6 | 565 | } |
shaunkrnelson |
7:44cb21f05dcc | 566 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 567 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 568 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 569 | { |
dudmuck | 0:0bd73064b7f6 | 570 | NmeaGpsData.NmeaLongitude[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 571 | } |
dudmuck | 0:0bd73064b7f6 | 572 | // NmeaLongitudePole |
dudmuck | 0:0bd73064b7f6 | 573 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 574 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 575 | { |
dudmuck | 0:0bd73064b7f6 | 576 | if( fieldSize > 2 ) |
dudmuck | 0:0bd73064b7f6 | 577 | { |
dudmuck | 0:0bd73064b7f6 | 578 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 579 | } |
dudmuck | 0:0bd73064b7f6 | 580 | } |
shaunkrnelson |
7:44cb21f05dcc | 581 | if(fieldSize <= 1) |
shaunkrnelson |
6:9dfe135334c9 | 582 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 583 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 584 | { |
dudmuck | 0:0bd73064b7f6 | 585 | NmeaGpsData.NmeaLongitudePole[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 586 | } |
dudmuck | 0:0bd73064b7f6 | 587 | // NmeaSpeed |
dudmuck | 0:0bd73064b7f6 | 588 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 589 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 590 | { |
dudmuck | 0:0bd73064b7f6 | 591 | if( fieldSize > 8 ) |
dudmuck | 0:0bd73064b7f6 | 592 | { |
dudmuck | 0:0bd73064b7f6 | 593 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 594 | } |
dudmuck | 0:0bd73064b7f6 | 595 | } |
dudmuck | 0:0bd73064b7f6 | 596 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 597 | { |
dudmuck | 0:0bd73064b7f6 | 598 | NmeaGpsData.NmeaSpeed[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 599 | } |
dudmuck | 0:0bd73064b7f6 | 600 | // NmeaDetectionAngle |
dudmuck | 0:0bd73064b7f6 | 601 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 602 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 603 | { |
dudmuck | 0:0bd73064b7f6 | 604 | if( fieldSize > 8 ) |
dudmuck | 0:0bd73064b7f6 | 605 | { |
dudmuck | 0:0bd73064b7f6 | 606 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 607 | } |
dudmuck | 0:0bd73064b7f6 | 608 | } |
dudmuck | 0:0bd73064b7f6 | 609 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 610 | { |
dudmuck | 0:0bd73064b7f6 | 611 | NmeaGpsData.NmeaDetectionAngle[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 612 | } |
dudmuck | 0:0bd73064b7f6 | 613 | // NmeaDate |
dudmuck | 0:0bd73064b7f6 | 614 | fieldSize = 0; |
dudmuck | 0:0bd73064b7f6 | 615 | while( NmeaString[i + fieldSize++] != ',' ) |
dudmuck | 0:0bd73064b7f6 | 616 | { |
dudmuck | 0:0bd73064b7f6 | 617 | if( fieldSize > 8 ) |
dudmuck | 0:0bd73064b7f6 | 618 | { |
dudmuck | 0:0bd73064b7f6 | 619 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 620 | } |
dudmuck | 0:0bd73064b7f6 | 621 | } |
dudmuck | 0:0bd73064b7f6 | 622 | for( j = 0; j < fieldSize; j++, i++ ) |
dudmuck | 0:0bd73064b7f6 | 623 | { |
dudmuck | 0:0bd73064b7f6 | 624 | NmeaGpsData.NmeaDate[j] = NmeaString[i]; |
dudmuck | 0:0bd73064b7f6 | 625 | } |
dudmuck | 0:0bd73064b7f6 | 626 | |
dudmuck | 0:0bd73064b7f6 | 627 | //FormatGpsData( ); |
dudmuck | 0:0bd73064b7f6 | 628 | ConvertPositionFromStringToNumerical( ); |
dudmuck | 0:0bd73064b7f6 | 629 | ConvertPositionIntoBinary( ); |
dudmuck | 0:0bd73064b7f6 | 630 | return SUCCESS; |
dudmuck | 0:0bd73064b7f6 | 631 | } |
dudmuck | 0:0bd73064b7f6 | 632 | else |
dudmuck | 0:0bd73064b7f6 | 633 | { |
dudmuck | 0:0bd73064b7f6 | 634 | return FAIL; |
dudmuck | 0:0bd73064b7f6 | 635 | } |
dudmuck | 0:0bd73064b7f6 | 636 | } |
dudmuck | 0:0bd73064b7f6 | 637 | |
dudmuck | 0:0bd73064b7f6 | 638 | void GPS::service() |
dudmuck | 0:0bd73064b7f6 | 639 | { |
dudmuck | 0:0bd73064b7f6 | 640 | while (rx_bufs_in_idx != rx_bufs_out_idx) { |
dudmuck | 0:0bd73064b7f6 | 641 | ParseGPSData(rx_bufs_out_idx); |
dudmuck | 0:0bd73064b7f6 | 642 | if (++rx_bufs_out_idx == NUM_RX_BUFS) |
dudmuck | 0:0bd73064b7f6 | 643 | rx_bufs_out_idx = 0; |
dudmuck | 0:0bd73064b7f6 | 644 | } |
dudmuck | 0:0bd73064b7f6 | 645 | |
dudmuck | 2:b531881123bf | 646 | /*if (pps_occurred) { |
dudmuck | 0:0bd73064b7f6 | 647 | pps_occurred = false; |
dudmuck | 0:0bd73064b7f6 | 648 | if (verbose) |
dudmuck | 0:0bd73064b7f6 | 649 | printf("gps:pps\r\n"); |
dudmuck | 2:b531881123bf | 650 | }*/ |
dudmuck | 0:0bd73064b7f6 | 651 | } |
dudmuck | 0:0bd73064b7f6 | 652 | |
dudmuck | 0:0bd73064b7f6 | 653 |