Topics created by Powersoft

That mean is , you have to reinstall the pyserial module

https://pypi.org/project/pyserial/#files

No because the module uses the GRBL Gcode interpreter as the firmware.

Yes you can, I am starting playing with my Core2 and could load a jpg image loaded in the SPIFFS using the SPIFFS.h
Cheers
Eric

Make an improvement in the main call routine. The return value of getBME280 is a boolean.
now it is possible to check whether a BME280 is connected correctly.

bool getBME280(TwoWire *theWire, double *t, double *p, double *h) { _i2c = theWire; /* check of BME280 is avilable */ uint8_t value = read8(0xD0); if (value == 0x60) // BME280 detected { reset_BME280(); // Reset BME280 write8(BME280_REGISTER_CONTROLHUMID,(uint8_t)0x01); // Select control humidity register write8(BME280_REGISTER_CONTROL, (uint8_t)0x27); // Select control measurement register write8(BME280_REGISTER_CONFIG, (uint8_t)0xA0); // Select config register readCoefficients(); // Read coefficients from BME280 *t = get_Temperature(); // Get temperature *p = get_Pressure()/100.0; // Get pressure *h = get_Humidity(); // Get Humidity return true; } else { return false; // No BME280 detected } }

Cheers,

Jan

@powersoft said in M5Paper I2C:

Today I rewrote the routines for the BMP280 and BME280 for a single device.
Simple include the source into the main program, and call it.
This is now working as I wont. It takes a afternoon of work!
Now put the finishing touches on the BMP280/BME280.

Would it make sense to post them on the forum when they are ready?

Cheers
Jan

Hi @Powersoft sorry for the absence, ive had some issues to deal with.
nice work finding the issue.
Create a project in the project forum and post your code and solution in there.

@powersoft
Hi, it is a very nice project!
Maybe you can share your code with me?

As mentioned in the other thread, the missing step is transferring the canvas framebuffer to the EPD.
If your loop function is changed as below, it works as you expect.

void loop() { for (int i=1; i<7; i++) { canvas1.drawString(testString[i],20,20); /* m5epd_err_t UpdateArea(uint16_t x, uint16_t y, uint16_t w, uint16_t h, m5epd_update_mode_t mode); */ M5.EPD.WriteFullGram4bpp((uint8_t*)canvas1.frameBuffer()); M5.EPD.UpdateArea(0,0,100,100,UPDATE_MODE_GL16); delay(1000); } }

You could loop over x and y, calling readPixel to get individual values, and save them.
Or you could dump the raw buffer, which is available using frameBuffer, and is of size getBufferSize.

This is available in the TFT_eSPI base class to canvas, but is not exposed to us.
The following seems to work:

int height = ((TFT_eSPI&)Canvas).fontHeight();

@powersoft
Do you only have 1 canvas? Try canvas instead of canvas1.

BTW, you can enclose your code in three back ticks (```) to make it easier for us to read, like this...

this text has three back ticks before and after it

@powersoft

Have you tried this tool yet?

https://github.com/m5stack/M5EPD/tree/main/tools/image2gray

It takes a jpg/png/bmp image and converts the image to a 4bit grayscale array.

Hello,
I Got the GFX font header file (by converting the Roboto.ttf file). Loaded the font file using canvas.setFreeFont(&Roboto_Medium50pt7b) and then display the text using canvas.printf(textString.c_str());.
It is working fine and display the text properly but when I am giving some special characters äöü then they are not appearing on M5stack paper.
Can someone please guide me what I am doing wrong? Am I missing something?

Thanks

The link to my question can be found here

@lukasmaximus
Thanks Lukas, The problem was loading the font from the internal file system.
After delete all these, and place Serial.begin in the right orde loading of the fonts was no problem. Even my DSEG7Classic-Regular.ttf was loaded correct, and display correct. Converted it with the python file ttf2bin.py was also a succes in use.

One question remains. The command "createRender(168, 256)" is used for drawing bigger text, but are there limitations?
In my case when I put a larger value as 168 the screen still blanks, notting happens, but no error message shows up. The documentation is a bit fuzzy. Please can you explane this command.

Hi @Powersoft please don't double post, and refer to my reply on your other post

please refer to my reply on your other post, has this been replicated 3 times now?

Hello,
I Got the GFX font header file (by converting the Roboto.ttf file). Loaded the font file using canvas.setFreeFont(&Roboto_Medium50pt7b) and then display the text using canvas.printf(textString.c_str());.
It is working fine and display the text properly but when I am giving some special characters äöü then they are not appearing on M5stack paper.
Can someone please guide me what I am doing wrong? Am I missing something?

Thanks

The link to my question can be found here

@m5stack thnx, I solved this problem - indeed I had to load board definitions

Also this YT-video 'M5Paper Seasons Greetings Display' was helpful: https://youtu.be/Tjz4fGRn8fo