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    Posts made by reaper7

    • RE: Atom Lite - Serial Port access

      on Arduino, You are try something like this??:
      Serial1.begin(115200, SERIAL_8N1, 32, 26);

      pin32 and pin26 on grove connector as RX and TX

      I haven't tested it...

      posted in Cores
      reaper7
    • RE: Notice: M5Stick-C factory test abnormal !!!

      I received M5StickC yesterday and I noticed a problem with the display in my M5Stick-C,
      but additionally my Stick is completely unusable because the reset button is broken!
      It did not work like the other buttons (with a characteristic click). I unscrewed the case and the parts of the button have come out.

      alt text

      Unfortunately I'm not happy with the winning.
      How can I open the rest of the plate to replace the button? Is it possible?

      I wrote to you in this case on the aliexpress.

      posted in General
      reaper7
    • RE: How to center a text?

      but it's working or not?

      posted in FAQS
      reaper7
    • RE: How to center a text?

      what is your screen orientation? landscape or portrait ??
      where is your text?
      try to swap values 160 with 120 for portrait mode
      or use this instead:

      M5.Lcd.drawString("M5Stack has been connected", (int)(M5.Lcd.width()/2), (int)(M5.Lcd.height()/2), 2);
      

      which calculates values for current orientation.

      I do not have hw for tests

      posted in FAQS
      reaper7
    • RE: How to center a text?

      For safe use in the future, better way is:

      void Display_WiFi_Connected() {
        M5.Lcd.clear(BLACK);
        M5.Lcd.setTextDatum(CC_DATUM);
        M5.Lcd.drawString("M5Stack has been connected", 160, 120, 2);
      }
      

      because drawCentreString is marked as deprecated

      posted in FAQS
      reaper7
    • RE: How to center a text?

      use:
      setTextDatum(uint8_t datum);

      https://github.com/m5stack/M5Stack/blob/master/src/utility/In_eSPI.h#L554

      and available options:
      https://github.com/m5stack/M5Stack/blob/master/src/utility/In_eSPI.h#L331

      posted in FAQS
      reaper7
    • RE: SPI clash between LCD and nRF24L01

      Phisically connect Your MAX to SPI lines and CS leave connected as is!
      M5Stack pinout:
      https://github.com/m5stack/M5Stack#pinout

      MAX DO -> M5Stack MISO (GPIO19)
      MAX CS -> M5Stack GPIO17
      MAX CLK -> M5Stack CLK (GPIO18)

      Looks like You have connection prepared corectly...

      Change only Your sketch like this:

      #include <SPI.h>
      #include <Adafruit_MAX31855.h>
      //#include <M5Stack.h>
      
      // Example creating a thermocouple instance with software SPI on any three digital IO pins.
      //#define MAXDO   19
      //#define MAXCLK  18
      #define MAXCS   17
      
      Adafruit_MAX31855 thermocouple(MAXCS);
      
      void setup() {
        //M5.begin();
        Serial.begin(115200);
        Serial.print("Internal Temp = ");
        Serial.println(thermocouple.readInternal());
        
        while (!Serial) delay(1); // wait for Serial on Leonardo/Zero, etc
        
        Serial.println("MAX31855 test");
      
        thermocouple.begin();
      
        // wait for MAX chip to stabilize
        delay(2000);
      }
      
      void loop() {
      
        // basic readout test, just print the current temp
        Serial.print("Internal Temp = ");
        Serial.println(thermocouple.readInternal());
        
        double c = thermocouple.readCelsius();
        if (isnan(c)) {
          Serial.println("Something wrong with thermocouple!");
        } else {
          Serial.print("C = ");
          Serial.println(c);
        }
       
        delay(1000);
      
        //M5.update();
      }
      
      posted in PRODUCTS
      reaper7
    • RE: SPI clash between LCD and nRF24L01

      @sibtcha , try to initialize Adafruit_MAX31855 library only with CS pin:

      Adafruit_MAX31855 thermocouple(MAXCS);
      

      as You see at library source: https://github.com/adafruit/Adafruit-MAX31855-library/blob/master/Adafruit_MAX31855.cpp
      when You declare SPI CLK line then library try read this device by software SPI implementation!

      also You are forgot thermocouple.begin();

      posted in PRODUCTS
      reaper7
    • ArduinoIDE M5Stack Partition Scheme

      Finally we can choose partition scheme for M5Stack board in Arduino IDE.
      It means that for large application (for eg. with bluetooth stack),
      that exceededs the maximum flash size for the default partition scheme,
      we can choose two others partitons "no ota" or "minimal spiffs".

      https://github.com/espressif/arduino-esp32/pull/1382
      https://github.com/espressif/arduino-esp32/pull/1302

      maximum sketch size for partitions:
      1310720 -> default
      2097152 -> no_ota
      1966080 -> min_spiffs

      0_1526363062962_Schowek01.jpg

      posted in Lessons and Guides
      reaper7
    • RE: "Bottom" IO expander pinout

      Names on the right side correspond to the GPIO numbers on the left and are connected together.

      higher DA mean GPIO25
      lower DA mean GPIO26

      R0/T0 = GPIO3/GPIO1 -> uart0
      R2/T2 = GPIO16/GPIO17 -> uart2

      Similarly, bottom names applies to the gpio numbers at the top.

      0_1524593532545_1524592015889-bottom-pinout.jpg

      posted in PRODUCTS
      reaper7
    • RE: M5.BtnA.wasPressed() conflicts with WiFi?

      @Calin - this bug is reported as issue? I can't find it...

      posted in PRODUCTS
      reaper7
    • RE: How to avoid text flicker ?

      this is a good option as @Sergey_Urusov wrote,
      instead rectangle you can also overwrite old value with inverted color
      something like this:

      #include <M5Stack.h>
      
      void setup() {
      
        M5.begin();
      
        M5.Lcd.fillScreen(BLACK);
        M5.Lcd.setTextSize(7);
      
      }
      
      void loop(){
        static int rndold = -1;
      
        int rnd = random(0, 100);
      
        if (rnd != rndold) {
          //overwrite old value with inverted color
          M5.Lcd.setCursor(40, 40);
          M5.Lcd.setTextColor(BLACK);
          M5.Lcd.printf("%02d", rndold);
          //write new value
          M5.Lcd.setCursor(40, 40);
          M5.Lcd.setTextColor(WHITE);
          M5.Lcd.printf("%02d", rnd);
          rndold = rnd;
          delay(250);
        }
        
      }
      
      posted in FAQS
      reaper7
    • RE: Let's speed up DrawLine and DrawPixel?

      @dda - good point!

      posted in FAQS
      reaper7
    • RE: Let's speed up DrawLine and DrawPixel?

      @dda 在 Let's speed up DrawLine and DrawPixel? 中说:

      Yep. And I managed to integrate this to the M5Stack library. I am doing tests, but so far so good. I've run a few modified sketches without issue. The TFT_ArcFill example is quite impressive.
      .
      .
      .
      There may be others, I'll see what happens when I compile the non-touch examples.

      TFT_eSPI is the best lib, we added m5stack support some time ago:
      https://github.com/Bodmer/TFT_eSPI/pull/88
      btw, m5stack display lib based on the early version of TFT_eSPI
      but since then, TFT_eSPI has developed a LOT!!!

      P.S. for advanced GUI we also added m5stack support for GUIslice:
      https://github.com/ImpulseAdventure/GUIslice/pull/34
      which uses TFT_eSPI as display driver.

      posted in FAQS
      reaper7
    • RE: M5Stack 2 Channel Oscilloscope

      @Calin - very nice! tnx

      posted in PROJECTS
      reaper7
    • RE: Battery fix found (sort of)

      @m5dude 在 Battery fix found (sort of) 中说:

      so i think the solution was spreading the pins and squeezing it together. The connections on the M5 core are weak.

      the same as I wrote here:
      http://forum.m5stack.com/topic/39/battery-issue/10
      and here:
      http://forum.m5stack.com/topic/62/ip5306-automatic-standby/14

      posted in PRODUCTS
      reaper7
    • RE: IP5306 automatic standby

      @m5stack - very good news!

      P.S. please also check the quality of connectors, especially female (on master board),
      maybe only my m5stack has such a problem but from the beginning of use, various pins have a contact problem
      with bottom plates(I check different: ioExtension/proto board/battery board).
      Evidently male pins from bottom plates do not have good contact with female connector on base plate, I do not check all contacts but have problem with accu pin, adc35 pin, adc36 pin.
      it's very annoying and spoils the positive impression from the module
      when you can not read the input status and wonder what is wrong in the code
      and it's not the fault of the code but the lack of contact

      P.S.P.S please also vote for this PR: https://github.com/espressif/arduino-esp32/pull/1242
      because current version of board.txt do not include proper pins_arduino.h variant for m5stack and for e.g. ADC1 or ADC2 are unknown when compile

      posted in FAQS
      reaper7
    • RE: Memory related issue

      from http://desire.giesecke.tk/index.php/2018/01/30/change-partition-size/

      inside ..esp32\tools\partitions add new file for e.g. bigapp.csv with content:

      # Name,   Type, SubType, Offset,  Size, Flags
      nvs,      data, nvs,     0x9000,  0x5000,
      otadata,  data, ota,     0xe000,  0x2000,
      app0,     app,  ota_0,   0x10000, 0x1E0000,
      app1,     app,  ota_1,   0x1F0000,0x1E0000,
      eeprom,   data, 0x99,    0x3F0000,0x1000,
      spiffs,   data, spiffs,  0x3F1000,0xF000,
      

      and inside esp32\boards.txt add new(copy) board like:

      ##############################################################
      
      m5stack_bigapp.name=M5Stack_bigapp
      
      m5stack_bigapp.upload.tool=esptool
      m5stack_bigapp.upload.maximum_size=1966080
      m5stack_bigapp.upload.maximum_data_size=294912
      m5stack_bigapp.upload.wait_for_upload_port=true
      
      m5stack_bigapp.serial.disableDTR=true
      m5stack_bigapp.serial.disableRTS=true
      
      m5stack_bigapp.build.mcu=esp32
      m5stack_bigapp.build.core=esp32
      m5stack_bigapp.build.variant=esp32
      m5stack_bigapp.build.board=M5Stack_bigapp
      
      m5stack_bigapp.build.f_cpu=240000000L
      m5stack_bigapp.build.flash_size=4MB
      m5stack_bigapp.build.flash_mode=dio
      m5stack_bigapp.build.boot=dio
      m5stack_bigapp.build.partitions=bigapp
      
      m5stack_bigapp.menu.FlashMode.qio=QIO
      m5stack_bigapp.menu.FlashMode.qio.build.flash_mode=dio
      m5stack_bigapp.menu.FlashMode.qio.build.boot=qio
      m5stack_bigapp.menu.FlashMode.dio=DIO
      m5stack_bigapp.menu.FlashMode.dio.build.flash_mode=dio
      m5stack_bigapp.menu.FlashMode.dio.build.boot=dio
      m5stack_bigapp.menu.FlashMode.qout=QOUT
      m5stack_bigapp.menu.FlashMode.qout.build.flash_mode=dout
      m5stack_bigapp.menu.FlashMode.qout.build.boot=qout
      m5stack_bigapp.menu.FlashMode.dout=DOUT
      m5stack_bigapp.menu.FlashMode.dout.build.flash_mode=dout
      m5stack_bigapp.menu.FlashMode.dout.build.boot=dout
      
      m5stack_bigapp.menu.FlashFreq.80=80MHz
      m5stack_bigapp.menu.FlashFreq.80.build.flash_freq=80m
      m5stack_bigapp.menu.FlashFreq.40=40MHz
      m5stack_bigapp.menu.FlashFreq.40.build.flash_freq=40m
      
      m5stack_bigapp.menu.UploadSpeed.921600=921600
      m5stack_bigapp.menu.UploadSpeed.921600.upload.speed=921600
      m5stack_bigapp.menu.UploadSpeed.115200=115200
      m5stack_bigapp.menu.UploadSpeed.115200.upload.speed=115200
      m5stack_bigapp.menu.UploadSpeed.256000.windows=256000
      m5stack_bigapp.menu.UploadSpeed.256000.upload.speed=256000
      m5stack_bigapp.menu.UploadSpeed.230400.windows.upload.speed=256000
      m5stack_bigapp.menu.UploadSpeed.230400=230400
      m5stack_bigapp.menu.UploadSpeed.230400.upload.speed=230400
      m5stack_bigapp.menu.UploadSpeed.460800.linux=460800
      m5stack_bigapp.menu.UploadSpeed.460800.macosx=460800
      m5stack_bigapp.menu.UploadSpeed.460800.upload.speed=460800
      m5stack_bigapp.menu.UploadSpeed.512000.windows=512000
      m5stack_bigapp.menu.UploadSpeed.512000.upload.speed=512000
      
      m5stack_bigapp.menu.DebugLevel.none=None
      m5stack_bigapp.menu.DebugLevel.none.build.code_debug=0
      m5stack_bigapp.menu.DebugLevel.error=Error
      m5stack_bigapp.menu.DebugLevel.error.build.code_debug=1
      m5stack_bigapp.menu.DebugLevel.warn=Warn
      m5stack_bigapp.menu.DebugLevel.warn.build.code_debug=2
      m5stack_bigapp.menu.DebugLevel.info=Info
      m5stack_bigapp.menu.DebugLevel.info.build.code_debug=3
      m5stack_bigapp.menu.DebugLevel.debug=Debug
      m5stack_bigapp.menu.DebugLevel.debug.build.code_debug=4
      m5stack_bigapp.menu.DebugLevel.verbose=Verbose
      m5stack_bigapp.menu.DebugLevel.verbose.build.code_debug=5
      
      ##############################################################
      

      then for your big apps you can select this board

      posted in FAQS
      reaper7
    • RE: M5Stack BLE client for Owon B35T multimeter

      Hi @JimiT ,
      Of course You can copy/clone/improve, this is for the people :)

      About finally sketch size...there are two options:

      • arduino-esp32 git released before 05.03.2018
      • current git + bigger app partition: http://desire.giesecke.tk/index.php/2018/01/30/change-partition-size/

      Personally I use a second option to keep up with git changes.
      BTW choose the partition size should be available in ide.

      About sd loader...great idea! I didn't know this library, tnx for link!

      posted in PROJECTS
      reaper7
    • M5Stack BLE client for Owon B35T multimeter

      https://github.com/reaper7/M5Stack_BLE_client_Owon_B35T

      posted in PROJECTS
      reaper7