M5StickC CardKB First Time usage

[markbirss]

Hi

I run the CardBK example with the CardBK connected but get no repsonse on screen or when press keys.

Do I need to flash the CardBK first with the keyboard firmware or should it be already loaded?

[pierreverbakel]

Hello Mark,

I had also a non functioning test-app with the CardKB which I received today for M5StickC. I guessed it might have something to do with the Pin Number, since it is probably a ported App from M5Stack, that does not have HAT-Connector.
So I changed the Wire.begin() line to Wire.begin(0, 26, 400000);
Also I commented out the lines referring to GPIO5, since it would not work with them in.
Maybe you get it working with the same change.

`#include <M5StickC.h>
#include <Wire.h>

#define CARDKB_ADDR 0x5F

void setup(){
M5.begin();
Serial.begin(115200);
//Wire.begin();
Wire.begin(0, 26, 400000); // Changed by PV
//pinMode(5, INPUT); // PV: What is on Pin 5?
//digitalWrite(5, HIGH);
M5.Lcd.fillScreen(BLACK);
M5.Lcd.setRotation(3);
M5.Lcd.setCursor(1, 10);
M5.Lcd.setTextColor(YELLOW);
M5.Lcd.setTextSize(2);
M5.Lcd.printf("IIC Address: 0x5F\n");
M5.Lcd.printf(">>");
}

void loop(){
Wire.requestFrom(CARDKB_ADDR, 1);
while(Wire.available())
{
char c = Wire.read(); // receive a byte as characterif
if (c != 0)
{
M5.Lcd.printf("%c", c);
Serial.println(c, HEX);
//M5.Speaker.beep();
}
}
// delay(10);
}`

[markbirss]

@pierreverbakel

I will get back to you once I test you suggested changes, thank you

[markbirss]

@pierreverbakel

YES !

your suggested changes in fact solve both the issues i had, thank you !

ie

1. The I2C_Tester M5StickC example would not detect my M5Stack CardBK on 0x5F, this is solved changing the example to specifically setting the connected pins

Wire.begin(32, 33, 400000);

and

2. The M5StickC CardBK example working with your suggested removal of

  //pinMode(5, INPUT);
  //digitalWrite(5, HIGH);

and leaving

Wire.begin();

for me since I have the CardBK connected to the Grove port (GND, 5V, G32,G33)

also I re-flashed my other CardKB with another hex file to support PS/2 mode then using a PS2-to-USB adapter then can be used as a USB keyboard (Japanese layout)

[markbirss]

I notice even without setting specific pin configuration

Wire.begin();

also works now

[pierreverbakel]

Hey @markbirss
Great ilustrated update on your work! I did not realize you have the standard keyboard, since I got myself a M5StickC-version (using the HAT-Connector), that did not work at first.
So now both are supported, at least when using the correct Wire.begin(x,y,z);
M5.begin() does a lot of initialisation. I did not dive into that, but most probably it has the right Wire.begin(x,y,z)-call in it already for the Grove-Connector.

• Nice GPIO-Layout, it will come in handy.
• Nice cable you got, where would one get such a cable?
• Nice keyboard cover you have made, baie goed!
• Where did you find the bin file and procedure to reflash the keyboard, since I have got some strange characters comingout 'u' with '..' on top etc.

[markbirss]

@pierreverbakel

Ah ok,

cable made up myself, with Tamakichi firmware, cut open PS2toUSB converter and connected USB side to CardKB

I used Raspberry Pi to flash keybaord with new hex file

https://github.com/markbirss/CardKeyBoard_PS2

This is the keyboard cover
https://www.thingiverse.com/thing:3544822

[Zontex]

Hello, is the issue solved? if not please let us know how can we help. I'm closing this issue for now, if it's not solved - feel free to re-open it.