Project 2 on a HyMini 2.4" #1170
Replies: 5 comments
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Posted at 2014-08-21 by @gfwilliams Hi Darius, Strange that you had trouble flashing the device - did you use the Serial Bootloader instructions? Glad you got it sorted in the end though. Thanks for the update on the tutorial - Espruino's changed quite a lot since then and I've been trying to migrate the projects over to the new style. I'll update the code though. There's actually a Touchscreen module now that should make this even less painful. |
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Posted at 2014-08-22 by Darius Yes, I followed those instructions but I get..
I'll take a look at the touchscreen module, thanks :) |
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Posted at 2014-08-22 by Darius Also, I just noticed that it says NACK during 0x2 but when I first ran it (without verbose) I got
I can't reproduce it though. |
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Posted at 2014-08-22 by Darius OK, I was wrong, if I power it off for long enough I get..
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Posted at 2014-08-22 by @gfwilliams Not sure - maybe it's that some other application is also using the serial port? |
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Posted at 2014-08-19 by Darius
Hi,
I ordered a Espruino but while I wait I thought I'd try and get it working on a Hy Mini 2.4" LCD board I got from ebay. I have some WS2812 LEDs arranged in a panel so I am trying Project 2.
I couldn't get the serial loader to work - it went into the STM boot ROM but I couldn't get it to unprotect so I used my Black Magic Probe like so..
I had to apply the following diff to get the demo code working..
To break it down..
1- Send 5 bytes so we read 5 bytes
2- Use B7 for chip select
3- Invert y position
I suspect 2 & 3 are only useful for this board, but number 1 seems like a bug in the original code - without it you only get 4 bytes so the Y coordinates are always NaN.
I haven't connected my LEDs yet, but soon :)
PS thanks for the Espruino, I am having good fun with it so far :)
Update: LEDs work, however I needed to change the baud rate in the example to 3200000 (like in the WS2811 example)
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