tft display for stm32f4 price

A1: We have the integrated system for industrial parts quality control. We have IQC (incoming quality control), IPQCS (in process quality control section), FQC (final quality control) and OQC (out-going quality control) to control each process of industrial parts prodution.

A4:Generally speaking, it will take us 15 working days for machining parts and 25 working days for stamping parts products. But we will shorten our lead time as soon as possible according to customers" demands.

Reduce the TFT GUI development time considerably with mikroC, mikroBasic or mikroPascal for ARM and mikromedia Plus for STM32 board. Buy this kit and save money.

Mikromedia can be used as a powerful programmable dashboard control panel for both hobby projects, but also for the entire systems. Based on the powerful STM32F407ZG ARM Cortex-M4 MCU family, it represents a powerful tool for building GUI-centric HID applications.

Ahh yeah look at that! If you look closely, top right of the LCD, that’s obviously a flex connector for a resistive touch overlay (4 contacts running to the 4 sides of the LCD overlay).

Agreed! I will be picking one up. I’ve been happy developing for the stm32f4discovery (and other stm32 chips) with gcc, openocd and gdb. It is all free.

The STM32F4 cores are pretty well supported by libopencm3 and Code Sourcery and summon-arm-toolchain both build working toolchains and openOCD supports the stlink natively now.

If you are looking for a ready-to-use solution, checkout ChibiStudio (from the ChibiOS/RT project), which off curse can also be used without ChibiOS. The windows version is available on ChibiOS website, while a linux version i did packaged some time ago can be found here:

A fair number of inexpensive baseboards/motherboards/accessories have also appeared for earlier versions. I hope Olimex puts out a couple nice STM32F429/427 boards.

I can see there is only a STLINK usb connector on board, so there is even no FS to expect. beside HS, I suppose does mean High Speed (480mbps). but HS anyway needs a separate physical layer USB chip for addition to STM32F4 chip and most likely this is chip is not present on this board anyway, because this is STM32F4+LCD+SDRAM demoboard and there is no need for USB at all.

The data brief bullet-points “USB OTG with micro-AB connector”. Looks like the micro-usb is on the underside, sticking out at the bottom of the photo. With matching T/H mounting tabs on the topside, labelled USB USER. But like you said, the STM32F4 requires an external PHY for HS, and it seems unlikely they’d include one on this board.

I think Farnell’s 21€ will be accurate, as ST’s suggested USD price is $24. The placeholders for the STM32F429I-DISCO on element14 (a division of Farnell) and mouser show $42, which I think predates the later ST announcement. I think the ST announced $24 will hold, and the distributor prices will match that, as they have in the past.

Thanks Jon, Yeah I would want something that was ready made, install and go and as simple and straightforward as possible. I really hate it when you go to get something installed and there’s all sorts of things to learn before you even know which files to download and then find “Oh, it needs XYZ and then you get XYZ and it needs UVW as well and … and so and in the end you give up and go with something else or forget the idea. I like the idea of the Mikro Electronica compilers, as although they aren’t free and aren’t cheap (well they are cheap compared to some!), it looks good and relatively straightforward, offers a choice of languages and some regulars here have indicated it’s pretty good.

You’re just a touch off there, I’m well and truly past Arduino, but yes it’s good for beginners who want to go that way, even if (from what I hear) some of the libraries are so slow and bloated. I just want to get the job done with whatever micro I’m using, not muck around trying to make one thing play nice with another and learn all the innards of the compiler, etc. Unfortuantely many of the offerings don’t come in a simple ‘get the job done with no fuss’ type of package. So for those that want to play around with the toolchain and tinker and don’t mind spending time learning all that instead of getting on with their Micro project, then that’s fine for them, but I want to get the job done, have it run fast enough for the application, be stable, put it out there and ensure it works properly when it’s out there.

I look at this and I think of the new HP Prime, with an ARM9 CPU, currently about $180 US, and I wonder if you’re really getting value for the extra $156. Heck, even a Beaglebone Black is only about $45.

I wouldn’t expect TI to hack profits from their calculator range, and HP have always been expensive, but ST could easily change their format to calculator-friendly. Clamshell design, LCD & battery in top half, CPU & keypad in bottom half, expansion pins to left / right of keypad makes a self contained unit.

You can get the touchpads custom made, but the only places that I know of aren’t at all cheap, though there will no doubt be somebody doing it cheap. I think in most cases people design the keypad on-screen and use the touch panel, though obviously that isn’t ideal for all situations.

It’s certainly useable in any other project where you have an onboard LCD controller. Especially any other project that happens to use a STM32F4. What difference would it have made if it had an external controller? Surely it’d have been on the same PCB. Were you hoping for a removeable SPI-interfaced module?

Look in the UM1670 user manual, paragraph 4.8: the tft includes an ILI9341 controller. The ILI9341 has it’s own graphics ram inside, it is not mapped into the STM32 address space. It is connected to the STM32 via a parallel bus. The ILI9341 and similar controllers are common on cheap chinese tfts. So it is no problem to source similar tfts for your final product after developing on the discovery board.

UM1670 in paragraph 4.8 also says that “The TFT LCD is a 2.41″ display of 262 K colors. Its definition is QVGA (240 x 320 dots) and is directly driven by the STM32F429ZIT6 using the RGB protocol”. ILI9341 has multiple modes of operation including direct RGB/HSYNC/VSYNC mode which bypasses internal GRAM. I don’t have the board yet but I assume display buffer is located in external SDRAM which is also on the board. The whole point of this kit is to show TFT and SDRAM interface in new STM32F4x9.

I’ve checked this discovery board firmware available from ST’s site (“STM32F429 discovery firmware package UM1662” number: STSW-STM32138, btw. finding it is a bit difficult – ST’s site is terrible):

They are using FreeRTOS, FatFs, STemWinLibrary which is ST’s version of Segger’s emWin graphic library and STM32F4xx_StdPeriph_Driver v1.2.1 which includes F429/439 support (FMC, LTDC and DMA2D added).

The license (enforceable or not) basically say it is strictly for evaluation only, which kinda makes sense since at that low price it probably cost them money to sell it

I suppose since it’s got an ST-Link on board, they could enforce that you aren’t allowed to use the ST-Link firmware for anything other than eval, thus by distributing the PCB in a finished product you’d be violating the license. But I think that’s actually also unenforceable too, though. I’m not an IP lawyer, but I think case law is that if you hand someone your iPod, they own all the music on it now too, seems like that applies here.

I suspect that clause is also so they won’t get people raging at them because they integrated the dev board into some commercial product and ST then later discontinues it. That has unfortunately happened a few times in the past.

That’s just dumb. I’m pretty sure you only get design lifecycle guarantees when you sign an order for a few hundred k + parts. Much less when you’re abusing a dev board into an end product.

Check again martin. Those lines have pullups to vdd and are connected to cpu pins. I have this board for some time and I can confirm that lcd is driven by lcd controller from cpu and frame buffer is in external dram which is also on the board.

Well even so that DMA2D stuff is geared towards displays with one address pointer. Try using it with displays with the x& y positions on separate addresses (like x add is 2A and y is 2B with base address of 0x6C000000 for commands and a offset of 4 for data ).. Wish there was and easy way of getting the DMA2D to work with different larger displays like the 640 by 480 of Newhaven’s http://www.newhavendisplay.com/nhd57640480wfctxl-p-2465.html

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Utilizing a TFT-LCD on STM32F4 to display ADC measurement values. The idea is to achieve kinda DMM behavior, where the multiple channels" measured values are displayed in the real time. Touchscreen would make it possible to modify and configure measurement settings. This is a first step of the bigger project for "on-the-run" configurable MCU, where you"ll be able to configure MCU peripherals without flashing.

This tutorial shows you how to display string, color and dynamic value on LCD with STM32-Nucleo development board from ground up. It will also show you how to read the technical datasheet of LCD. If you are interested in more advance topic of RTOS from scratch, please go to Real-Time Operating Systems tutorial.

We want to display some string or color on the specific location of the LCD. We can achieve this by sending data to the specific address of RAM (Memory) in the LCD board. This is call Memory to Display Address Mapping. Take the image below for example. We want to make the top left corner of the LCD display a yellow square. First, you need to let the LCD knows at where of the RAM are you going to write the data to (using X_start, X_end, Y_start, Y_end value). Then you can start writing the data (color information) to those address of the RAM. Then, the specified portion of LCD will change it"s color according to the value you wirte into the address in the RAM. (Please refer to the ST7735s datasheet page 59 ~ 72)

In the following, we will first use CubeMX (link) to configure SPI and ADC (optional) on the STM32-Nucleo board and then generate code for keil µVision IDE v5 (link). Secondly, copy paste the code from the program we provided. Finally, we will test the code on the hardware.

Click File --> New Project --> In the search, key in your board model (STM32f411RE in our case) --> Click on the NUCLEO-F411RE --> Double click the item --> Click Yes to initialize all peripherals with their default Mode. --> Clear all Pinout.

You may wonder what pin of SPI should I use (you see we change the pin from the default PA5~7). Actually, ARM Cortex-M4 defined the combination of pins with SPI, I2C, UART. You can check the table from the STM32F411RE User Manual page 47 ~ 52. In the table, you can see we are using the combination of PB3/PB5, that combination also legit.

Before starting to display anything on the LCD, we need to initialize and configure the LCD by sending some command and parameters (data) to the LCD board. This initialization only need to be processed once. After that, we can send data to the LCD with correct protocol.

Let"s make the uper left corner of the LCD become green. In the following sending command as well as sending data, we all communicate via SPI. Remember that before sending data, we need to set the RS (Data or command) pin high. We set the RS pin low before sending command.

The reason of making this tutorial is that the code provided from instructor of the Udemy course is not working at all and the instructor didn"t reply to any student at all. I start from knowing nothing about SPI no need to say the LCD board. After 5 days of research, reading documentation, and trial and error, I finally make it works. This tutorial is to guide those people who want to get a deep knowledge of making a driver to display on LCD.

STM32F429 has also LTDC driver for LCD like that, but this driver we will use later. For now we will use SPI for driving in serial mode and some other pins for controlling.

Remember: This library can also be used, if you are not using STM32F429 Discovery. It can be used in previous STM32F4 Discovery board. All pins can be changed in defines.h file which is included in project.

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I have tried to compile the example file GxTFT_FSMC_BlackSTM32F407V.ino. The necessary assisting files should be in place including STM32GENERIC in the hardware folder. After having worked for quite some time Arduino IDE stops with an error message. I list the last page of the verbose output:

"C:\Users\Peas\AppData\Local\Arduino15\packages\arduino\tools\arm-none-eabi-gcc\4.8.3-2014q1/bin/arm-none-eabi-g++" -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -DF_CPU=168000000L -mthumb -DSTM32GENERIC -DRAM_LENGTH=131072 -DFLASH_LENGTH=524288 -c -g -Os -w -std=gnu++11 -ffunction-sections -fdata-sections -nostdlib -fno-threadsafe-statics --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf -MMD -DSTM32F4 -DARDUINO=10807 -DARDUINO_BLACK_F407VE -DARDUINO_ARCH_STM32 -DSTM32F407VE -DHSE_VALUE=8000000 -DMENU_SERIAL_AUTO=SerialUSB "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\cores\arduino/stm32" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\cores\arduino/usb" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/CMSIS" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/STM32F4/CMSIS_Inc" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/STM32F4/CMSIS_Src" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/STM32F4/HAL_Inc" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/STM32F4/HAL_Src" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\system/STM32F4/stm32_chip" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\cores\arduino" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\variants\BLACK_F407VE" "-IC:\Users\Peas\Documents\Arduino\libraries\GxTFT\src" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\libraries\SPI\src" "-IC:\Users\Peas\Documents\Arduino\libraries\Adafruit_GFX_Library" "-IC:\Users\Peas\Documents\Arduino\hardware\STM32GENERIC-master\STM32\libraries\stm32_dma\src" "C:\Users\Peas\Documents\Arduino\libraries\GxTFT\src\GxIO\STM32GENERIC\GxIO_STM32F407ZGM4_FSMC\GxIO_STM32F407ZGM4_FSMC.cpp" -o "C:\Users\Peas\AppData\Local\Temp\arduino_build_724464\libraries\GxTFT\GxIO\STM32GENERIC\GxIO_STM32F407ZGM4_FSMC\GxIO_STM32F407ZGM4_FSMC.cpp.o"

C:\Users\Peas\Documents\Arduino\libraries\GxTFT\src\GxIO\STM32GENERIC\GxIO_STM32F407ZGM4_FSMC\GxIO_STM32F407ZGM4_FSMC.cpp: In constructor "GxIO_STM32F407ZGM4_FSMC::GxIO_STM32F407ZGM4_FSMC(bool)":

C:\Users\Peas\Documents\Arduino\libraries\GxTFT\src\GxIO\STM32GENERIC\GxIO_STM32F407ZGM4_FSMC\GxIO_STM32F407ZGM4_FSMC.cpp:97:11: error: "PG12" was not declared in this scope

C:\Users\Peas\Documents\Arduino\libraries\GxTFT\src\GxIO\STM32GENERIC\GxIO_STM32F407ZGM4_FSMC\GxIO_STM32F407ZGM4_FSMC.cpp:98:11: error: "PG0" was not declared in this scope

The STM32F429 Discovery helps you to discover the high-performance microcontrollers of the STM32 F4 series and to develop your applications easily. It offers everything required for beginners and experienced users to get started quickly.

Based on the STM32F429ZIT6, it includes an ST-LINK/V2 embedded debug tool, a 2.4" QVGA TFT LCD, an external SDRAM of 64 Mbits, a gyroscope ST MEMs, a USB OTG micro-AB connector, LEDs and pushbuttons.

A large number of free ready-to-run application firmware examples are available on www.st.com/stm32f4-discovery to support quick evaluation and development.