Cores

• G

  M5Paper Shutdown() / Deep Sleep / Wakeup
  • grundprinzip

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  Hi, I'm currently using this small work-around to differenciate the power source between battery and USB. It basically involves monitoring the voltage after initializing M5.BatteryADCBegin() (via M5.getBatteryVoltage() to be more precise). Measuring a voltage over 4200 mV (empirically evaluated!) indicates most of the time a USB-usage. Under that value, there are high chances that the device is on battery. So far, this work-around is doing its job pretty well for me. I hope it might help! Cheers, t.
• M

  M5Paper: Screenshot function
  • murraypaul

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  Thank you for this. I was looking for this! Cheers, Jan
• M

  M5Paper: Support for multiple loaded TTF fonts
  • murraypaul

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  great tnx !
• P

  M5Paper text
  • Powersoft

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  @medy I've never used micropython, so I can't help with that.
• S

  Where is M5Paper API Key?
  • satcomjimmy

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  When you install UIFlow and finish setting up the wifi, the API key will be displayed on the screen along with the mode and the network you have connected the device to.
• M

  M5Paper: Warning when using multiple canvases
  • murraypaul

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  Hello @murraypaul thank you very much for the detailed explanation. I appreciate it. Cheers Felix
• P

  M5Paper partial Update Canvas
  core • • Powersoft

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  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); } }
• M

  M5Paper stuck in M5.begin();
  • michael_o

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  Hello @michael_o you are welcome. I am glad to hear you got it working and thank you for reporting back here. Cheers Felix
• K

  Error compilling with the Arduino
  • kobyp7

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• T

  flash status
  • TT

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  I found the following documents. Command description https://github.com/espressif/esptool/wiki/Advanced-Commands#write_flash_status Source code https://github.com/espressif/esptool/blob/master/esptool.py L3499 def write_flash_status(esp, args) GD25Q32C datasheet http://www.elm-tech.com/ja/products/spi-flash-memory/gd25q32/gd25q32.pdf
• K

  M5Paper and API Key
  • k33g

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  @world101 said in M5Paper and API Key: @ajb2k3 Actually, most of the time when I flash new firmware with M5Burner, it does assign a new API key to my device. Maybe that is because I always erase the flash before burning the firmware. I just tried it and it gave me a new API key. @k33g give it a try. The Erase button is in the upper right corner of M5Burner. Then burn the latest M5Paper firmware. I thought i was supposed to but for me, lately, it looked to always generate the same api.
• P

  UpdateArea
  • Powersoft

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• T

  M5Paper EPD power consumption
  • tatar-andrei

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  @felmue that definitely sounds like a massive design issue - I wonder, maybe that's why the M5EPD library doesn't have any touchscreen power-off calls? There was also a post on the M5Stack twitter recently, showing a blurred out image of upcoming devices, with a device eerily similar to the M5Paper taking up a large chunk of the photo: https://twitter.com/M5Stack/status/1357559621389479940/photo/1 I wonder if the design team realised these small issues and made a new board that is more fit for general usage purposes. It happened with the M5Cores (the Basic model had no PSRAM and the first units only had 4MB storage, which later got expanded to 16MB, then the Grey kit came with an MPU, then the Fire kit also included a microphone and PSRAM, among other changes), though the speed is much faster - I think there was almost a year between the Basic and Grey M5Cores, whereas the M5Paper was only recently released. It does feel like a slap in the face for us who already bought multiple M5Paper units though - we've received a device that has a handful of obvious faulty design choices, and now we have to buy the new, updated model to get functionality that should've been working in the first iteration. Don't get me wrong, I'm happy for the updated design, I just hope there will be some discount for those who've already got units on their hands.
• D

  M5Paper wakeup cause
  • dov

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  @dov I'm very new to the M5Paper, but I'm wondering if you couldn't use the esp_deep_sleep_start() instead of shutdown because this will keep the RTC going and shutdown everything else. In theory, you might be able to call esp_err_tesp_sleep_enable_timer_wakeup() with an appropriate duration and then simply continue. According to the documentation the Wifi connection data is kept as well. I'm currently trying to work on something like this as well.
• R

  10 min battery life
  • rahulthakurms

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  Hi @fonix232 thank you for the clarification. Yes, being able to wake up the system from shutdown mode via touch would be nice (like it is already possible using an RTC timer or alarm). Thanks Felix
• 

  M5Paper and images drawing
  • TitiMoby

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  As the weather looks really rainy this week end, I'll have plenty things to try. Thanks all, I'll keep posted my progress.
• Z

  My M5StickC, M5Atom Matrix, And M5Atom Echo are not showing up for COM ports. Does anybody Know what to do that will fix this?
  • ZigedZaged123

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  This might be helpful for you too.
• M

  M5Paper SD Card Issues
  • m5user

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  Hi guys I've found that the SD card only seems to be read when it already is inserted when M5Paper is booted / reseted. Or in other words, if M5Paper already is running when I insert the SD card it is not read and going to the Factory Test Test screen returns an SD card failed. On the other hand when the SD card has been recognised and I remove it and then go to the Factory Test Test screen the SD card still passes the test. Which leads me to my question. In the M5Paper schematic the SD card detect line is connected to GPIO34 and I already verified that reading GPIO34 actually reflects whether an SD card has been inserted or not. Has anyone already tried to use this information? Thanks Felix
• K

  M5Paper Speaker
  • kaderno

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  @world101 Thanks for your reply. For the project I have in mind, I just only need beeps, but if I'm going to hack around, I'll try to attach a speaker since it would allow me to do many other things. For programming I'd go with Arduino.
• P

  M5Paper load font message "FT_Stream_Open: opened `/GenSenRounded-R.ttf' but zero-sized"
  • Powersoft

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  @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.