Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Generic boards that are not Maple or Maple mini clones, and don't contain the additional USB reset hardware
bhaskins
Posts: 6
Joined: Fri Jul 31, 2015 12:50 am

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by bhaskins » Fri Aug 21, 2015 7:43 pm

First, an apology.
I posted to "Don't buy this board" and then! found this thread.
I have this exact ( pictured ) board, really needed this information, and could not get anything.

So,
(1) Has anyone found a exact plugin LCD for it?
(2) I am very much a victim of SSTM (senior short term memory) and the dreaded TMT (too many toys)
but if there are other neat things that need testing please let me know.

Many thanks for this info,
Bert

victor_pv
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Joined: Mon Apr 27, 2015 12:12 pm

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by victor_pv » Fri Aug 21, 2015 11:56 pm

bhaskins wrote: (1) Has anyone found a exact plugin LCD for it?
This display fits right on it:
http://www.aliexpress.com/store/product ... 38181.html

As you can see in this link, the seller sells the same board together with this display:
http://www.aliexpress.com/item/ARM-Cort ... 38295.html

Now, I dont know of any driver for that LCD.
There are plenty of SPI LCDs, about the same size, and you only need to connect a few wires. We have drivers for SPI displays based on ILI9341 and ILI9163, and some I2C based ones, like the small oled displays.
If you want something that you get running quickly and easily, I would rather go for one that uses and existing driver.
On the other hand if you want to port a driver, then you can get that one, see if you can find any driver for it (the add mentions a driver for STM32, no idea if the seller will send a link or what), and then port it to use the stm32duino core.

EDIT: Looking again at the pictures, they didn't connect the LCD to that board, they just put it over it, so I am not 100% that board is a straight fit for that connector...

zmemw16
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Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by zmemw16 » Sat Aug 22, 2015 9:49 am

i've got these, at least one from (board+lcd) from kesun, also 2 off 2.8"lcd (kesun) still to arrive.
(is it worth starting a lcd connectors thread under hardware?)

http://www.aliexpress.com/store/product ... 38181.html

http://www.aliexpress.com/item/2-8-TFT- ... 38181.html

btw demo photo shows controller as an ILI9320

i've just spotted that the lcd's are 'sockets' , that the zet6 boards, which i thought were identical
are different : J5(32 way) is a pin header on one and a socket on the other and the silk screen
pin descriptions for J5 are the same

these boards are 5 volts(J2) only

stephen

zmemw16
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Location: St Annes, Lancs,UK

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by zmemw16 » Fri Aug 28, 2015 6:53 am

zmemw16 wrote:at24c02 addressing A0=A1=A2=0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 0 1 0 A2 A1 A0 R/W

warning so far i've only seen the zet variant of this board on ebay or ali-express that doesn't the eeprom or spi flash

stephen
i've just looked at my boards again
i'm attaching a couple of pics, well that took longer than i thought

i make that at least 3 variants of that board, anyone got a different one?
i suspect there should be one for a lcd with a socket connector?
stephen
Attachments
cz-skt.png.gz
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cz-pins.png.gz
(206.93 KiB) Downloaded 114 times

randybb
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Location: Slovakia

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by randybb » Fri Sep 11, 2015 5:29 pm

@zmemw16: I have the first one. Do you have a display for this board as well? Because I am not able to find a right library for it... Maybe you, or somebody else, had more luck.

zmemw16
Posts: 1685
Joined: Wed Jul 08, 2015 2:09 pm
Location: St Annes, Lancs,UK

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by zmemw16 » Fri Sep 11, 2015 9:19 pm

display, i only spotted this query by chance, if you 'quote/??/??/' - i get an email saying so.
?? means a 'something'

i'm not sure. i am aware that there may well be male and female connector versions of the 34 pin variety,
so far for lcd pinouts, i've seen lots! try a google images search.

also that they'll most likely be yellow. also make sure they're not shields, if unclear query the store??
does simplify there wiring though.

libraries, possibly 2 or 3 ....
i've finally sussed is that the display 'module' is really just 3 interface blocks on a single pcb and not one;
1. spi sd
2. spi touch
3. spi [edit]display interface with a data 8080/6800 micro type interface [/edit], just an extended hd44780 interface. someone will
no doubt tell me this can be connected/seen as an 'spi' type interface. is it 'a' or 'an', 'an' if subject first letter is a vowel??

i've been looking at the FSMC with CubeMX, frankly it's a bit confusing and that's without generating code..
there appear to be basically four(?) blocks, each with a selectable cs pin, each block can be a lcd or nand or ram or ....(4 or 5 options with right click);
it's a lot of permutations for someone to use.
so unless it's stated that in 'our' world block 0 will be sram, blk 1 flash, blk 2 is nand and blk3 is lcd, that middle layer HAL glue code is not going to be nice at all. ok - it's somehow or will be an object with n types of behaviour/interface/parentage, missed that lesson.

this is also a problem with a physical board, how do you determine what each block is actually used for, put a led on the device cs and toggle?
yeah, probably; just a lot of v and z series boards out there - i've got at least 4/6/8 :-) any of the 'r's??
c/v/z how many pins for mcu 48/64/??/???, next is a 'level' for functionality(8/b/e) and next is how the package is packaged(t=tray??)
also whilst the fsmc pins are nice and sequentially named in the circuit diagram, the physical pins had a bad hair day - all over the place.

stephen

bhaskins
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Joined: Fri Jul 31, 2015 12:50 am

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by bhaskins » Fri Oct 23, 2015 8:20 pm

Just found this, it appears to support our/my VET6 board but no data as to what driver chip is used.

http://www.aliexpress.com/item/2-8-inch ... eb201560_9

zmemw16
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Location: St Annes, Lancs,UK

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by zmemw16 » Fri Oct 23, 2015 9:01 pm

scroll down and it has
With touch screen control ic 9325 or 9328
what it means is it has a touch screen ic prob either xptnnnn or an adnnnn, both are common
and the display driver is either an ILI9325 or an ILI9328

you're pretty unlikely to actually damage the chip if you try both drivers

hth

stephen

localcrack
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Joined: Fri Mar 11, 2016 8:28 am

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by localcrack » Fri Mar 11, 2016 8:39 am

Anybody succeed to drive the lcd ?
I have tried but not succeed
by the way which driver chip exactly this lcd used ?
Attachments
LCD.jpg
LCD.jpg (76.72 KiB) Viewed 952 times

madias
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Location: Vienna, Austria

Re: Review: CZ mini STM32F103VET6 (infos, documents, BL…)

Post by madias » Fri Mar 11, 2016 10:23 pm

Only guess: ILI9340 8 or 16bit parallel Interface. Search the forum for it, maybe you have luck!

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