About Dandrews

Dandrews · 2021-08-24

I am attempting to read a NEMA message from a GPS over UART.Im expecting the message to be about 75 chars/bytes long.Heres a sample of the data I'm seeing when using an ardunio for testing the GPS data out over UART.$GNGGA,011112.00,3214.62073,N,0580...

Dandrews · 2021-08-24

So this was super helpful, I did have UBX packets being sent, and that was causing all kinds of problems as I was building under the assumption that I only had the one message type enabled.I cracked open the interface manual that goes with this chip ...

Dandrews · 2021-08-24

I have the rx_buff being set with a memset before my apps main while loop. And the rxByte >= 73 was a copy/paste mistake. I've edited that to have my current check for 5c 6e, or \n. The index >=73 was from an observation made on my known good data, e...

Dandrews · 2021-08-24

Good to know about CDC_Transmit_FS. I was unaware it was back-grounded, and thought I was clearing it after it had been sent off. I'll give the circular buffer idea a try and see if I can not get more consistent data. Thanks!

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Having issues reading a UART string into a buffer, getting garbage data.

Re: Having issues reading a UART string into a buffer, getting garbage data.

Re: Having issues reading a UART string into a buffer, getting garbage data.

Re: Having issues reading a UART string into a buffer, getting garbage data.