<![CDATA[GPS (AT6558) at Thonny editor]]>I have code in Micropython to communicate with the GPS unit connected to port A (because I use plain Gray M5Stack unit) and using Thonny editor.

If I upload code directly to the device a run it from the menu, it works well. But if I try to run it directly from Thonny editor (it uses REPL mode I guess), I got this error:

Unit: Please change unit gps to other grove

It is very simple code and it looks like this:

import os
from m5stack import *
from m5ui import *
from uiflow import *
import unit

setScreenColor(0x222222)
gps0 = unit.get(unit.GPS, unit.PORTA)

label0 = M5TextBox(92, 85, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)
label1 = M5TextBox(92, 70, "Text", lcd.FONT_Default, 0xFFFFFF, rotate=0)

while True:
  label0.setText(str(gps0.pos_quality))
  label1.setText(str(gps0.satellite_num))
  wait_ms(2)

Do you have any tips?

]]>https://community.m5stack.com/topic/3269/gps-at6558-at-thonny-editorRSS for NodeWed, 29 Apr 2026 08:44:01 GMTSat, 08 May 2021 05:42:50 GMT60<![CDATA[Reply to GPS (AT6558) at Thonny editor on Sun, 09 May 2021 01:47:12 GMT]]>Hi, In GRAY M5STACK unfortunatelly PortA is used for I2C to some internal chip. Sometime GPS not work on Grove Cable.

Just connect GPS to
16RX <<< TX White
17TX >>> Rx Yellow
And all start working with no problem.

Example code from Arduino works if You add

#define RX1 16
#define TX1 17
...
void setup()
{
M5.begin();
M5.Power.begin();
GPSRaw.begin(9600, SERIAL_8N1,RX1,TX1);

0_1620524777250_30c66d7b-be90-4ac1-80ac-0815ae8019a6-image.png

]]>https://community.m5stack.com/post/13757https://community.m5stack.com/post/13757Sun, 09 May 2021 01:47:12 GMT