UBX with u-blox neo-m9n does not work

Question

cyrili opened this issue 4 years ago · comments

I have this GNSS receiver witch uses the new u-blox neo-m9n module.

it appears that this module got rid of a couple of configuration items that are written to by px4's gps driver:

UBX_CFG_KEY_CFG_UART1OUTPROT_RTCM3X
UBX_CFG_KEY_CFG_USBOUTPROT_RTCM3X
UBX_CFG_KEY_NAVHPG_DGNSSMODE

writing to these causes a NAK message to come back and the gnss module to be misidentified as protocol_version<27 by the gps driver.

deleting the relevant lines of code makes my module work flawlessly, but I'm not sure if that breaks compatibility with some older model.

Lorenz Meier · Answer 1 · Mon Mar 09 2020 02:31:12 GMT+0800 (China Standard Time)

Thanks for reporting! I've ordered the module for @bkueng so that we can cross-test.

Beat Küng · Answer 2 · Thu Apr 09 2020 20:03:11 GMT+0800 (China Standard Time)

Thanks @cyrili, I finally got the hardware and fixed it in #55.