Administrace komentářů

Prijmace jsou z Aliexpressu a neni na nich nic, co by poukazovalo na model. Jeden je USB a druhy UART.

Ten USB o sobe rika toto:

Bus 001 Device 046: ID 1546:01a7 U-Blox AG 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            2 Communications
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x1546 U-Blox AG
  idProduct          0x01a7 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           62
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              0 

a kdyz z nej ctu, tak prvni radky maji toto info:

petr@zar-work:~$ cat /dev/ttyACM0 
$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50
$GPTXT,01,01,02,HW  UBX-G70xx   00070000 FF7FFFFFo*69
$GPTXT,01,01,02,ROM CORE 1.00 (59842) Jun 27 2012 17:43:52*59
$GPTXT,01,01,02,PROTVER 14.00*1E
$GPTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*20
$GPTXT,01,01,02,ANTSTATUS=OK*3B
$GPTXT,01,01,02,LLC FFFFFFFF-FFFFFFFF-FFFFFFFF-FFFFFFFF-FFFFFFFD*2C

Udajne ma umet GPS i GLONASS, Beidou a QZSS? Nicmene vraci GPS data - $GPxxx.

UART prijmac o sobe zadne info neposila.

No a rozdil polohy? Oba prijmace vraci stejnou polohu:

$GNGGA,130758.000,5002.34361,N,01430.52915,E,1,9,1.12,269.951,M,45.440,M,,*48

a kdyz si tedy posunu desetinnou tecku a zadam do mapy.cz nebo maps.google.com vysledek (50.0234361N 14.3052915E), tak me to hodi o 14 km mimo (skutecna poloha prijmace je 50.0390600N, 14.5089517E)

Takze pravdepodobne delam nekde neco spatne, nebo jsem neco prehledl. Vsazim na to, ze to neni jen o posunuti desetinne tecky.