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It's hard to read all this and not jump to Bangle's defense. It does seem like your experience is not ideal, and that must be disappointing. But I don't believe the BangleJS line were meant to replace Pebbles at all. It is first and foremost a programmable microcontroller you can wear. The fact that it has evolved an ecosystem that can be compared to Pebble's is quite impressive. To fault it for not achieving Pebble's equal seems unfair to me.
The battery issue is concerning, and maybe others are having similar issues, but mine lasts over a week (admittedly with modest use). As for the button, I've read about a few having issues, yes. Gordon has worked with folks to fix or replace those.
For me it's rekindled a desire to create simple software, experiment with rudimentary UI and learn a ton about microcontrollers and their capabilities (and their limitations).
I believe that is more of its intended use.
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Thanks for all these great improvements! Looking forward to trying them out.
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You can never brick a Bangle2. It's an involved process though, you'll need a special USB connector (USB Female on one end, exposed 4 wires on the other) and connect the 4 wires to an SWD-capable dongle or device (like an ST-Link or Raspberry pi).
I would do as fanoush suggests: see if you can use nrfConnect on an android device or from a PC first.
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and yes, my thought was sunset Bangle 1, and use this as Bangle 3 (only supporting B2 and B3). It's darn impossible to find ONE watch to make everyone happy, with these two you cover a lot of ground.
BTW: the TK78G has a 405mAh battery inside (likely to accommodate for all the sensors) and 64Mb (8MB) SPI flash. I've mapped quite a few pins so far, but I am not an electrical engineer so I am likely missing some step to get SPI Flash working (like setting, resetting or toggling some pin). I've found 10 pins on the LCD/touch panel connector and am running through those permutations when I can.
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How did you get the firmware on yours? Did you have to crack it open?
Yes. I've opened several watches now, and this one is not too bad. Hair dryer to heat the screen edges, then a plastic spudge to loosen the screen.
I am open to bringing support for more watches into the main Espruino project if it doesn't mess the code around too much
Some of jeffmer's solutions use a modified spi_lcd_unbuf to accommodate shared SPI between LCD and Flash chip, but that looks like it's only a few #ifdefs to make it happen. He also exposes a function that lets you send init commands to the LCD from Espurino, so custom init sequences don't require custom firmware.
...you can still run apps from the main app store
Mostly you can, obviously with some exceptions for watches that don't have barometer, GPS, etc. but he has a "Bangle" object that honours many functions, and that can be embellished.
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If the plan is to use an existing watch for a base, I'll just toss in the TK78G: https://www.alibaba.com/trade/search?fsb=y&IndexArea=product_en&CatId=&tab=all&SearchText=tk78g It may be on the way out (it's mostly disappeared from AliExpress) but it has some features that make it an interesting blend of B1 and B2: NRF52840, two physical buttons, GPS, Thermometer (external), heart rate sensor, accelerometer, touch screen and a nice 1.6" screen. I have it running Espruino right now (in the process of RE the screen and sensors). It may not replace the B2's always-on display, but it may be a replacement for B1?
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Thanks, Gordon. I rebuilt with that, and erased the flash (.eraseAll()) and it seems to work better, but it still seems to choke on larger files (5k or so). A file that works when sent to RAM will throw an error like:
Uncaught ReferenceError: "retur" is not defined at line 1 col 1036 ... ^ in function "connect" called from line 1 col 410 ... ^ in function "GC9A01" called from line 1 col 29 GC9A01(D25, D3, D2, D18, D26); ^ >as if the keyword "return" were incomplete; but as I said, it IS complete, and works when sent to RAM.
After this point, trying to list files shows an empty list; but if I "reset()", the file list is restored.It's like it goes to sleep and can't wake up at some point! Insomniac flash.
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Hey all, I've put Espruino on a smartwatch (SN80-Y from Yfit) and have figured out most of the pins and components (lcd, accel, touch) but am having trouble getting the XTX XT25F32B (4MB flash) chip to be reliable. Verified the following pins using multimeter: CS=D19, SO=D18, SI=D17, CLK=D20. Doing a wakeup, followed by getting vendor ID and capacity seems fine:
> spif = new SPI(); =SPI: { } > spif.setup({sck: CLK, miso: SO, mosi: SI, mode:0, baud: 8000000}); =undefined > spif.send([0xab], CS); =new Uint8Array([255]) > print(spif.send([0x90,0,0,1,0,0], CS)); new Uint8Array([255, 255, 255, 255, 21, 11]) =undefined > print(spif.send([0x9f,0,0,0], CS)); new Uint8Array([254, 11, 64, 22]) =undefinedThat seems fine:22 at the end should mean 2^22 bits, or 4MB. So i've included it in my board file. In the devices section I have:
'SPIFLASH' : { 'pin_sck' : 'D20', 'pin_mosi' : 'D17', 'pin_miso' : 'D18', 'pin_cs' : 'D19', 'size' : 4096*1024, # 4MB 'memmap_base' : 0x60000000 # map into the address space (in software) }And when flashed I see:
>require("Storage").getFree() =4194304I then use this test script just to read the first few blocks of 256 bytes:
CS=D19, SO=D18; SI=D17; CLK=D20; setTimeout(()=>{ spif = new SPI(); spif.setup({sck: CLK, miso: SO, mosi: SI, mode:0, baud: 8000000}); spif.send([0xab], CS); print(spif.send([0x90,0,0,1,0,0], CS)); print(spif.send([0x9f,0,0,0], CS)); let hex = (d) => { return ('0'+d.toString(16)).slice(-2);}; let buf = new Uint8Array(256); // 3 byte address: 0x7f 0xff 0xff (0x7f = 8MB, 0x3f = 4MB, 0x1f = 2MB) for(let b1=0; b1 < 1; b1++) { for(let b2=0; b2 < 5; b2++) { let bufstr = ''; for(let b3 = 0; b3 < 256; b3++) { res = spif.send([0x03, b1, b2, b3, 0], CS); buf[b3] = res[4]; bufstr += ("0"+buf[b3].toString(16)).slice(-2)+" "; } print(`${hex(b1)} ${hex(b2)} ${hex(b3)}: ${bufstr}`); //${btoa(buf)}`); } } }, 1000);The timeout was added because I was running into issues without it. This seems to work if I save it to RAM, as I get data (remnants from previous attempts to write):
new Uint8Array([255, 255, 255, 255, 21, 11]) new Uint8Array([254, 11, 64, 22]) 00 00 00: 04 04 00 00 54 45 53 54 ... 00 01 00: 64 65 65 70 20 73 6c 65 ... 00 02 00: 4c 4b 7d 20 20 41 42 3d ... 00 03 00: 70 69 66 2e 73 65 6e 64 ...In the first line you can see the ASCII for "TEST" which was the name of the file I attempted to write in the IDE.
So the problem is when I try to save the test code to Storage (or Flash):| __|___ ___ ___ _ _|_|___ ___ | __|_ -| . | _| | | | | . | |____|___| _|_| |___|_|_|_|___| |_| espruino.com 2v12.925 (c) 2021 G.Williams Espruino is Open Source. Our work is supported only by sales of official boards and donations: http://espruino.com/Donate > FW addr 0x00000000 fail Status 0 Uncaught Error: File already written with different data at line 1 col 1106 ...{\n for(let b2=0",0,1349); ^ Uncaught Error: Too much data for file size at line 2 col 380 ... }\n }\n}, 1000);",1024); ^ ____ _ | __|___ ___ ___ _ _|_|___ ___ | __|_ -| . | _| | | | | . | |____|___| _|_| |___|_|_|_|___| |_| espruino.com 2v12.925 (c) 2021 G.Williams Espruino is Open Source. Our work is supported only by sales of official boards and donations: http://espruino.com/Donate new Uint8Array([112, 105, 102, 46, 115, 101]) new Uint8Array([32, 104, 101, 120]) Uncaught SyntaxError: Unexpected end of Input at line 42 col 18 in TEST for(let b3 = ^ >The other notable thing is that the CLK and SI lines are shared with the LCD (also SPI) and the accelerometer (I2C). However, I have not initialized either of those. In other tests, LCD works fine as does the accel, but I'm trying to leave out any issues with line sharing.
Any pointers greatly appreciated!
I just got a few 51822 boards, all with 16K RAM (same story: seller claimed QFAC). Can you tell me what to define/comment out so I can make a minimal working build? I'm hoping to use them as simple bluetooth switches.