Problem with module ILI9341

[espruino-discuss]

Posted at 2018-10-26 by Alexandr

Good day, everyone! I have a problem with module ILI9341. I'm plugging it in on esp12F. After loading and cleaning the screen appears, after which the esp is rebooted and so on. Please help if anyone knows what the problem is.

var ESP8266 = require("ESP8266"),
     wifi = require("Wifi");
function onInit() {
  wifi.stopAP();
   wifi.connect("INGRIFABSR", {password: "B73vFeX6se2"}, function(err) { // 192.168.99.61
       if(err)console.log(err);else {
        print("connected! "+wifi.getIP().ip);
var SPI1 = new SPI();
    SPI1.setup({ sck:D14, miso:D12, mosi:D13 ,baud: 1000000});
var g = require("ILI9341").connect(SPI1, D5, D15, D4, function() {
  g.clear();
  g.drawString("Hello",50,50);
//  g.setFontVector(20);
//  g.setColor(1,0.5,1);
//  g.drawString("Espruino",0,10);
});
     }
   });
}
 ____                 _
|  __|___ ___ ___ _ _|_|___ ___
|  __|_ -| . |  _| | | |   | . |
|____|___|  _|_| |___|_|_|_|___|
         |_| espruino.com
 2v00 (c) 2018 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xef chip 0x4016
>
>save()
=undefined
Compacting Flash...
Calculating Size...
Writing..
ComRunning onInit()...
connected! 192.168.99.106
>
 ets Jan  8 2013,rst cause:2, boot mode:(3,5)
load 0x40100000, len 2408, room 16
tail 8
chksum 0xe5
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0x84
load 0x3ffe8310, len 632, room 0
tail 8
chksum 0xd8
csum 0xd8
2nd boot version : 1.6
  SPI Speed      : 40MHz
  SPI Mode       : DIO
  SPI Flash Size & Map: 32Mbit(1024KB+1024KB)
jump to run user1 @ 1000

[espruino-discuss]

Posted at 2018-10-26 by @MaBecker

Please check SPI pins on ESP8266 page

http://www.espruino.com/EspruinoESP8266

---

Posted at 2018-10-26 by Alexandr

The hardware SPI uses the pins shown in the board layout (CLK:D14, MISO:D12, MOSI:D13, CS:D15).
reset D5
cs D4
connected everything correctly

---

Posted at 2018-10-26 by Alexandr

The hardware SPI uses the pins shown in the board layout (CLK:D14, MISO:D12, MOSI:D13, CS:D15).

reset D5
cs D4
connected everything correctly

---

Posted at 2018-10-26 by @MaBecker

var SPI1 = new SPI(); // create a new software SPI

ESP8266 has one hardware SPI named SPI1.

SPI1.setup(......)

---

Posted at 2018-10-27 by Robin

Fri 2018.10.26

Hello @user79559,

re: 'connected everything correctly'

I made this mistake the first time using SPI. Worth taking yet another look.

Under 'Data Transmission'

https://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus

Unlike Tx-Rx wiring SPI is MOSI-MOSI

The Espruino device is the master so MOSI is an output to the input pin of the slave device

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Posted at 2018-10-28 by Alexandr

Connected TFT, does screen cleaning, then outputs half of the word " hi " and does reboot :)

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Posted at 2018-10-28 by Alexandr

Connected TFT, does screen cleaning, then outputs half of the word " hi " does reboot :)

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Posted at 2018-10-29 by @allObjects

...you may be short on power... What is your power supply setup?

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Posted at 2018-10-30 by Alexandr

I understand the problem. When you output a long word, it fails. And when you perform on a short command, there is no failure. Use this method is unrealistic. Maybe in the future it will make the library better

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Posted at 2018-10-30 by @allObjects

When you output a long word, it fails. And when you perform on a short command, there is no failure.

@user79559, could you please elaborate on that a bit more? (cannot see anywhere in your code something that displays "Hi...*).

The restart may have different causes:

• running out of heap space
• running out of time (js work has to complete in the breaks between ESP8266 has to tend Wifi business)
• running out of power (brown out... if ESP8266 is not solidly powered / has not enough decoupling capacitance across GND and VCC, or power supply is too weak - too many other things are on the 3.3V rail together with ESP8266 - ESP8266 Wifi operation takes it down...)

---

Posted at 2018-10-30 by @allObjects

@MaBecker, if you want to use the HW SPI, do you still need to create one with new SPI()? Can you not just use the SPI1? SPI1 - all uppercase - is defined in ESP8266 (just checked0). var SPI1 = new SPI() may mess with that. If you want to create the SW SPI, I'd - by my gut to stay way for sure from trouble / interference - use spi = new SPI(); to not mess with SPI1...

>SPI // <--- entered in console
=function () { [native code] }
>SPI1 // <---
=SPI1
>SPI1.setup() // <---
=undefined
>var s = SPI1; // <---
=SPI1
>SPI1 = new SPI(); // <---
=SPI: {  }
>SPI1 === s // <---
=false
>SPI1 // <---
=SPI: {  }
>

Lines 5 and 14 and 11 show that you get new objects... and loose the HW SPI, I guess... do you? May be it just looks on the JS level that way, but not under the hood where it is created before JS takes place.

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Posted at 2018-10-30 by @allObjects

...found this ESP8266 reset cause list - http://iot-bits.com/esp8266/esp8266-reset-causes-rst-cause/

(right bow I experience 4... code stuck or failing....)

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Posted at 2018-10-30 by @MaBecker

UPS, yes it is just SPI

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Posted at 2018-10-30 by @MaBecker

or

• unaligned memory access