nRF52dk with Espruino

[espruino-discuss]

Posted at 2017-03-03 by Amigo

Hi everyone! I use nrf52-DK with Espruino ide.
I want to start soft i2c. I tried to use hardware and software examples as http://www.espruino.com/I2C.
I wrote a code:

// set up SPI
var i2c = new I2C();
i2c.setup({ scl : 30, sda: 31 });
// Write a single byte (0) to address 0x52
i2c.writeTo(0x52, 0);

but everytime i have an error message like:

Uncaught Error: Function "setup" not found!
at line 1 col 5
i2c.setup({ scl : 30, sda: 31 });
Uncaught Error: Function "writeTo" not found!
at line 1 col 5
i2c.writeTo(0x52, 0);

Could anyone help me?

[espruino-discuss]

Posted at 2017-03-03 by @gfwilliams

Which firmware are you using? that should work fine...

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Posted at 2017-03-03 by Amigo

I find at nordic devZone this hex espruino_1v86.26_nrf52832 here:
https://devzone.nordicsemi.com/blogs/980/espruino-program-nrf5-devices-in-javascript-see-th/
but its version is 86 but now is avalible v91 for other boards....

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Posted at 2017-03-03 by @gfwilliams

Ahh, that's pretty old - I think before software I2C got added.

Try http://www.espruino.com/binaries/travis/3c73320e7083cf4bb290a46a979886c1cba1dc63/espruino_1v91.222_nrf52832.hex

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Posted at 2017-03-03 by Amigo

Ooh, thanks a lot!!!! It works well!

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Posted at 2017-03-03 by Amigo

And one else question. Are i2c pins already defined by default?
if yes, what are their pin numbers?
I try to use SSD1306 but it doesn't works

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Posted at 2017-03-03 by Wilberforce

Post your error messages now you have updated the firmware...

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Posted at 2017-03-04 by Amigo

I rebuild code with soft i2c, ssd1306 works, but it skips every other line. And symbols seems are broken. What a problem may be?

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Attachments:

• naforym.jpg

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Posted at 2017-03-04 by Amigo

And one else question. how to flash mcu? it doesnt works in settings...flasher...flash

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Posted at 2017-03-04 by @gfwilliams

What is your display brand/model number? Some of those SSD1306 displays have different connections internally and need different initialisation codes :(

You can't flash the nRF52DK using the Web IDE. However if what you're asking is how to write your JS code in to flash, you type save() on the left-hand side.

It's worth going through the getting started tutorial as it'll explain it: http://www.espruino.com/Quick+Start

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Posted at 2017-03-04 by Amigo

yes. Understood)
Now i defined ble service:

//Start BLE service
NRF.setServices({
  0xABCD : {
    0xDCBA : {
      value    : 0x01,
      //maxLen   : 1,
      writable : true,
      readable : true,
      onWrite  : function(evt) {
        digitalWrite([LED3,LED2,LED1], evt.data[0]);
      }
    }
  }
});

it works while i am not saving program in flash. After saving my service disappears

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Attachments:

• Screenshot_2017-03-05-19-31-20-246_no.nordicsemi.android.mcp.png
  
• Screenshot_2017-03-05-19-29-50-590_no.nordicsemi.android.mcp.png

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Posted at 2017-03-04 by @gfwilliams

Put the code in an onInit function - it should then be called at startup and will set the services up for you.

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Posted at 2017-03-05 by Amigo

What is your display brand/model number? Some of those SSD1306 displays have different connections internally and need different initialisation codes :(

SSD1306 oled display from china has a number at back side: GM009606A , i used it with my C library in keil. It worked nice. How can i repair it? Where i can find source file to fix it?

Next time i tried to connect CC3000 wlan module (TI CC3000 booster pack), but compiler says than cc3000 and http modules not found and i have a log :

ERROR: Timeout in CC3000 driver (16384)

SPI1.setup({ sck : 27, miso : 26, mosi : 25, baud:1000000, mode:1});
var wlan = require("CC3000").connect(SPI1, 24 /* CS */, 23 /* EN */, 22 /* IRQ */);
wlan.connect( "Amigo_WiFI", "*******", function (s) { 
  if (s=="dhcp") {
    require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
      res.on('data', function(data) {
        console.log(">" + data);
      });
    });
  }
});

Is CC3000 supported? I use nrf52DK

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Posted at 2017-03-06 by @gfwilliams

This is the JS fine for SSD1306: https://github.com/espruino/EspruinoDocs/blob/master/devices/SSD1306.js#L33

You can copy the code in to the Web IDE directly and use it - compare the highlighted lines with the ones in your C code. Chances are the configuration is different.

I'm afraid the CC3000 isn't supported by default in nRF52 - GSM and ESP8266 should be though. If you want CC3000 you'd have to compile your own firmware.

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Posted at 2017-03-12 by Amigo

Does Espruino support scheduler or simple task manager?

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Posted at 2017-03-13 by @gfwilliams

I'm not quite sure what you mean? It has a built in scheduler which you use with setTimeout/setInterval, and it uses that (and an internal event queue) to execute functions when they're needed.

There is no preemption, but that's not really what JS is about.