Cores

• P

  M5Core detects pressure on key A even if the key was not pressed at all.
  • Peter

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  @felmue The tip has hit the problem. I have implemented a query of the key A in the callback routine after 1 ms. Only if the key is still pressed the routine is executed. Otherwise nothing is done. Now there are no more key presses from the ghost. Thanks
• 

  Stamp-Pico Arduino lib?
  • vkichline

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  Felix; thanks for the tip in the Grove pinout; exactly where I was stuck after experimenting.
• J

  M5paper touchscreen wakeup from sleep
  • Joonas

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  Hello @jcl this issue happens with Arduino framework 1.0.5 and when WiFi is enabled before going to sleep. See here for possible work-a-round. Thanks Felix
• A

  Core Ink
  • amxd55

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  @felmue thanks Felix for your help I now have it working... something was going wrong between moving from USB to battery.
• K

  m5paper vscode platformio
  • kevindtimm

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  I have downloaded that and it does work. But, your documentation leaves so much to be desired / it would be great if this could be documented somewhere rather than in a git repo. Some of us do read documentation / and don't necessarily consider git to be documentation.
• D

  M5Stack BASIC - screen turns off when Serial.begin used
  • DavidoZ

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  Hello @DavidoZ why don't you try the provided example? Strictly Serial.begin() isn't needed in setup() as M5.begin() already takes care of that. And for the communication with the SIM7600 you'll need to open Serial2. See above example. Thanks Felix
• T

  ESP32 Basic Core restarts every few seconds
  • thkfighter

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  Hello @thkfighter if you're asking whether there are people using M5Stack Basic Core successfully with UIFlow then the answer is yes and no. I am sure there are many successful cases out there but there probably are some unsuccessful cases as well. For M5Stack Basic Core resetting every few seconds many reasons come to mind: weak power supply, UIFlow firmware not properly burned, incorrect UIFlow firmware, WiFi credentials incorrect, weak WiFi signal and yes, faulty hardware. Without a little more information it is very hard to diagnose the particular issue your M5Stack Basic Core is suffering from. Could you give a little more information? For instance is there anything in M5Burner log? Is there anything on the screen? If yes, does the WiFi symbol turn from red to green? Thanks Felix
• A

  Core Ink Wake Up button from Deep Sleep
  • alexylem

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  Hello @alexylem only so called RTC_GPIOs can wake ESP32 from deep sleep. Unfortunately GPIO_NUM_5 is not one of them. Please check out page 15 - Pin description of the ESP32 datasheet. Thanks Felix
• M

  M5Paper end of life?
  • murraypaul

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  Hello guys there is a new version, M5Paper V1.1, available in the M5Stack store. It seems to be more or less identical with the original version, maybe except for the e-Ink screen panel? Does anyone understand below comment from the M5Paper product description? 'M5Paper v1.1 adopts flexible e-Ink screen panel, which is the same model as that of M5Paper v1.0 hard e-Ink screen panel. All features and specs are the same for both models.' Is the new and old version actually the same or not? And what is the difference between a flexible and a hard e-Ink screen panel? Thanks Felix
• P

  Reboot ESP32 Basic Core IoT on battery/USB
  • PierreD

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  Hello Wold101, Thanks for your answer. I need to continue to use the M5Stack Core as I have made some backplane electronics and need to use the M5Stack stock. I didn't know about this post and I already used a diode and had a bug with the ESP. Probably this problem of low battery charge. The idea is great to use a MAX40200 but it requires extra wiring. I tried with a capacitor. I have some 4700µf in stock at 63V. I like this solution, no modification and it works well. I will test it over several days.
• 

  [M5 Fire] Wave playing?
  • inrepublica

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  Thanks for your reply, when i test this code in UIFlow 1.7.7 on Fire: from machine import I2S import os, uos from wav import wave #initialize the I2S device i2s = I2S( mode = I2S.MODE_MASTER | I2S.MODE_TX | I2S.MODE_DAC_BUILT_IN, rate = 16000, bits = 16, channel_format = I2S.CHANNEL_ONLY_RIGHT, data_format = I2S.FORMAT_I2S_MSB) #uncomment the following line if you have issues mounting the sd #uos.sdconfig(uos.SDMODE_SPI,clk=18,mosi=23,miso=19,cs=4) #create a function to play the wav def wav_player(fname): wav = wave.open(fname) i2s.set_dac_mode(I2S.DAC_RIGHT_EN) i2s.sample_rate(wav.getframerate()) i2s.bits(wav.getsampwidth() * 8) i2s.nchannels(wav.getnchannels()) i2s.volume(20) while True: data = wav.readframes(1024) if len(data) > 0: i2s.write(data) else: wav.close() break # Playing WAV audio file lcd.clear() lcd.print('working',0,0,0xffffff) try: uos.mountsd() except: os.mountsd() lcd.print('sd card not mounted',0,50,0xffffff) pass while True: wav_player('/sd/test.wav') i2s.stop() wait(5) I have another error on line 39: module object has no attribute 'mountSD'
• B

  esp now between gray core and stick
  • bigpotatobrain

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  R

  I use this code in stickc as esp receiver for debug. And on other atom lite i use only broadcast datablock with convert to str block with my message. And its works.
• 

  CoreINK screen update
  • aerolite

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• G

  M5Paper Shutdown() / Deep Sleep / Wakeup
  • grundprinzip

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  As I promised here at end of my post under another thread, the shutdown() is rather buggy in the way awakening is performed. I'll describe here what I experienced. Anyway one should take this advice of @felmue in account. There are different shutdown() overload variations and here bugs or weird things I found. My goal was holding the M5Paper as much as possible sleeping, but at intervals of every full 5 minutes he should awake for about 10 to 15 seconds, perform some tasks (sensors) and go again sleeping to the next full 5-minute moment. overload-2 int shutdown( int seconds ); Even if I calc enough seconds to next 5-minute moment, it seems impossible to stay asleep for remaining 5 minutes. Every 3th minute it is awakening too. This consumes unnecessary double battery power. So where I want to have this wake up schedule: hh:00 hh:05 hh:10 hh:15 hh:20 ...and so on... I get this wake up schedule: hh:00 hh:03 hh:05 hh:08 hh:10 hh:13 hh:15 hh:18 hh:20 ...and so on... This overload-2 has no problems by passing the midnight moment. overload-3 int shutdown( const rtc_time_t &RTC_TimeStruct ); This variation works best. Passing midnight (so date change) is no problem but 24:00u should be given als 00:00u. overload-4 int shutdown( const rtc_date_t &RTC_DateStruct, const rtc_time_t &RTC_TimeStruct ); is working, but passing midnight in a way to set awake time at 00:00h and increasing the date-parameter does NOT work! Also 24:00u without increasing the date does NOT work. The only way to pass midnight is awaking just some seconds before midnight and stay awake till after midnight, do the things that has to be done (sample sensors) and go asleep for remaining period (in my case to 00:05u). I hope others can take advantage of this info.
• D

  M5Paper wakeup cause
  • dov

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  @felmue Hello Felix, No, didn't try rename rtc. What difference should it make? (In C++ rtc and RTC are different identifiers, is n't it). The reason for introduction of the own internal rtc of the ESP32 was looking for a simple way to set the system clock from the M5Paper RTC after awakening and without connecting to WiFi (this is very time- and battery-consuming). The weird thing is: syncing with NTP is rather simple in ESP32-Arduino environment, but just setting the system time equal to the 'external' BM8563 RTC-time is more complicated. There is no simple routine. I found some not so elegant way with mktime(). Another point: I discovered bugs with awakening the M5Paper when this awakening moment should be exactly at midnight: so at 24:00u or 00:00u. See a next post (if I find time to describe).
• I

  Multicore programming for M5Stack
  • iamashish

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  @iamashish This guy shows how to use 2 cores with arduino https://youtu.be/9vvobRfFOwk
• P

  M5Paper blank display
  • Powersoft

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  @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
• K

  no matching function for call to 'Ink_Sprite::drawString(int, int, String&)'
  • kalon33

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• T

  M5Paper EPD power consumption
  • tatar-andrei

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  B

  Use : void GT911::updateB() // as update but modify by Bricox ... { r814E.reads = read(0x814E); // "read struct" AND these 5 explicite bits fields if(r814E.status) { if(r814E.touchPts != 0) { _is_finger_up = false; _num = r814E.touchPts; // "_num" could be definitively replaced by "r814E.touchPts" uint8_t data[num * 8]; read(0x8150, data, _num * 8); // read block of all fingers , up to 5*8 bytes for(int j = 0; j < _num; j++) // for each finger { uint8_t *buf = data + j * 8;// address base of each finger Sorry, comments that were aligned, in my notepad++ by multiple Tabs, are no longer aligned in the snippets viewer
• M

  M5Paper: Screenshot function
  • murraypaul

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  Thanks Paul for this tool, it is working great.!!