Topics created by SirMichael

yuyun2000,

I wasn't able to get my structure to pass correctly. I ended up not only changing the double to a float, but I also changed it to another uint16_t. There was still a 1 byte difference in the sizes of the structure (Nano was 13, M5Stack was 14). I added the "uint8_t pad1" to the Nano so it was then 14 also. The comms routines that I have now shows that they both return a 0 (successful) but the data doesn't come across like it does with the Nano to Nano testing.

I've decided to give up on sending the Structure and just assemble the data into a String Array and send that. I have it working as a String, but I'm changing it over to use a null terminated Character Array.

Thanks Anyway, it was fun trying!

Sir Michael

I finally figured it out, even after trying all of the examples in the SerialBluetooth.h example directory on the M5Stack Core2.

I finally found that I had to Initialize the Bluetooth settings on my device, after that, the connections worked find.

Sir Michael

Hello @SirMichael

you are absolutely correct. Overwriting the button with a rectangle only removes it from the screen, but doesn't deactivate its touch function. You would need to deactivate the touch function in addition to drawing the rectangle. Sorry I've missed that.

Thanks
Felix

@SirMichael

I found what I was looking for, a simple sketch to create a button. I did some minor massages, taking from the events_buttons_gestures_rotation.ino and figured it out.

#include <M5Core2.h> ButtonColors on_clrs = { RED, WHITE, WHITE }; ButtonColors off_clrs = { BLACK, WHITE, WHITE }; Button myButton(10, 10, 80, 60, false, "Button", off_clrs, on_clrs, TL_DATUM ); void setup() { M5.begin(); M5.Buttons.draw(); } void loop() { M5.update(); if (myButton.wasReleased()) Serial.print("* "); }

Sir Michael

@SirMichael

I did some more studying, and came up with the following table:

2d232859-84b4-4421-9143-baaf384d0c65-image.png

I hope this is right!
Now, I'm not using the M5Stack bottom board which has the PortB and PortC, so I figure that I can use the RXD2/TXD2 pins as well as the G36 and G26 pins. I'll use those for the other 2 SoftwareSerial ports, and G27 and G19 for the other pins.

The thing that I found confusing was that they do list the pins in the M5Stack documents, but they don't really explain what is available to the user. This took a lot more work than it should have!

Sir Michael

@SirMichael
https://shop.m5stack.com/products/4pin-buckled-grove-cable
all lengths!
These are actually 'UN-buckled' type but they are an industry standard.

@SirMichael Did you not see the GPIo breakout modules or units?
Did you looking the MBUS connector?

I am surprised that Grove level shifters are not part of the M5Stack hardware offering.

Just today I went onto JLCPCB and designed myself a PCB that can fit in shrink tube and has a Grove socket on each side, the board has a level shifter that converts a Grove (5V power + 3.3V logic) to pure 5V power + 5V logic. (it's a level shifter board that generates its own 3.3V reference with an LDO). I made an order of 90 boards at a shipped cost of $135, so a little over a buck a board. I am just surprised nobody seems to sell this, least of all M5Stack with a core offering of 5V power + 3.3V logic on just about everything.

By the same process I could quickly make a set of boards that takes 5V power 3.3V logic from one side, and gives 3.3V power 3.3V logic on the other (just by duplicating the design, rearranging the components and deleting the level shifter). I'll probably do it the day I need it. Or maybe sooner.

I think it’s Xpos, Ypos, width, height

Slow response could be down to having the wrong baud speed set. UIFlow is built on Micropython and so does support multi files like arduino. Checkout Micropython. Org

Esp is not like the arduino as instead of having functions permanently assigned to a pin, the esp using a matrix to assign functions to pins

@sirmichael this will be an issue with whatever web browser you are using.