jnewcomb

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• PWM and WDT resets

  @jnewcomb started

  • 5 comments
  • 3,469 views

  @Gordon replied
• Driving WS2811, WS2812 and other NeoPixel devices from ESP8266

  in ESP8266 • 8 years, 11 months

  

  Tip: My ESP-7 defaults to 160MHz when newly flashed - which runs neopixelWrite(..) at twice speed

  var esp8266 = require("ESP8266");
  esp8266.setCPUFreq(80);
  

  fixed it..

• PWM and WDT resets

  in ESP8266 • 8 years, 11 months

  

  Hi, I can't get the software PWM to work either. I get a WDT reset if any call is made to analogWrite(..)

  D4.mode('output');
  =undefined
  analogWrite(D4, 0.1, {soft:true});
  =undefined

  Disconnected

• PWM and WDT resets

  in ESP8266 • 8 years, 11 months

  

  Hi, can anyone give the current state of play with PWM functions with espruin­o_1v84.tve_master_d8dec28_esp826­6?
  Intro states it's not yet implemented, but see code in github
  https://github.com/espruino/Espruino/blo­b/master/targets/esp8266/jshardware.c
  jshPinAnalogOutput

  So I've been playing - trying getting it working. Im getting WDT timeouts when ever I call 'analogWrite' in any of its forms

  
  analogWrite(D4, 0.5);
  =undefined
  

  Working with Web IDE so the following message gets sent to the UART
  

  
  
   ets Jan  8 2013,rst cause:4, boot mode:(3,3)
  
  wdt reset
  
  load 0x40100000, len 1396, room 16
  
  tail 4
  
  chksum 0x89
  
  load 0x3ffe8000, len 776, room 4
  
  tail 4
  
  chksum 0xe8
  
  load 0x3ffe8308, len 540, room 4
  
  tail 8
  
  chksum 0xc0
  
  csum 0xc0
  
  2nd boot version : 1.4(b1)
  
    SPI Speed      : 40MHz
  
    SPI Mode       : DIO
  
    SPI Flash Size & Map: 32Mbit(512KB+512KB)
  
  jump to run user1 @ 1000
  
  

  Tried a number of combinations:
  Tried pin D14 too
  

  D4.mode('af_output');
  
  analogWrite(D4, 0.5,{freq:10});
  
  D4.mode('output');
  
  analogWrite(D4, 0.5,{freq:10});
  
  analogWrite(D4, 0.5,{freq:100, soft:true});
  
  analogWrite(D4, 0.5);
  
  

  PS
  Great project and fun to play with..