stm32 spi tft display pricelist

ST cooperates with Riverdi because we believe that such partnership brings value to our joint customers. On top of this, we also discovered that we shared some business visions about how to make it easier and faster to go from the initial stages of designing a product embedding a graphical user interface to a production ready product. The conclusion was that combining the STM32 High performance microcontrollers, with the free STM32 graphics toolchain and Riverdi displays + PCB and then merge all of this into a board support package ready to run TouchGFX, would be a compelling offering.

Designing and developing a product with an embedded user interface (GUI), can be complex, as it involves many building block and disciplines, which all requires expert knowledge. Riverdi offer is covering a lot of them, allowing the customer to focus on the most important part of the development, the GUI Application itself. And remember that this is the face of your product. Choosing such solution, the customer does not need to worry about sourcing components like the display, microcontrollers, memory, etc. or even writing low-level drivers, development the board support package or porting TouchGFX. Its all ready done. What makes cooperation with Riverdi unique is that Riverdi has been able to drive a 1280*800 display resolution in high colors, with a STM32H7 microcontroller and a TouchGFX application showing a smart home UI. This shows that Riverdi is well aware of how to exploit all the capabilities of the STM32 Graphics offering combining hardware and software in a unique solution. From the first business meetings, it was clear that we shared visions of the market for embedded GUIs. And Riverdi proved that they can go from an idea and concept to actual working hardware, very fast.

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IMPORTANT The touchscreen has a maximum frequency of 2MHz, which is probably slower than you want your TFT SPI clock. So in the routine that reads touch coordinates (ili9341_touch_pressed_t ili9341_touch_coordinate(ili9341_t *,uint16_t *,uint16_t *) in ILI9341/ili9341.c), make sure to adjust the lines that modify the SPI clock so that your baud rate is less than 2MHz before communicating with the touchscreen (e.g. MODIFY_REG(lcd->spi_hal->Instance->CR1, SPI_CR1_BR, SPI_BAUDRATEPRESCALER_128)), and then restored to whatever setting you use here immedaitely afterwards. See the comments in that source file for both locations.

If using the touchscreen, you will probably want to set Hardware NSSP=Disabled (slave/chip-select) in favor of a software implementation, since you will need one signal for the TFT and a separate one for the touchscreen. Any two unused GPIO digital output pins will work.

Add a Memory->Peripheral DMA TX request for your SPI device with PeriphInc=Disabled, MemInc=Enabled, PeriphDataAlignment=Byte, MemDataAlignment=Byte, Mode=Normal.

IMPORTANT If using FreeRTOS, you will need to raise the DMA interrupt priority to something logically higher (numerically lower) than the FreeRTOS idle thread priority. For example, if FreeRTOS priority is set to 3 and SPI DMA TX is configured as DMA1 channel 4, set DMA IRQ priority to 2 with HAL_NVIC_SetPriority(DMA1_Channel4_IRQn, 2, 0).

Other than SPI pins, we need to select three more pins as output. I have selectedPB6 for CS, PC7 for RESET, and PA9 for DC. You are free to choose any other pins also, whatever suits the requirement

In this guide we’re going to show you how you can use the 1.8 TFT display with the Arduino. You’ll learn how to wire the display, write text, draw shapes and display images on the screen.

The 1.8 TFT is a colorful display with 128 x 160 color pixels. The display can load images from an SD card – it has an SD card slot at the back. The following figure shows the screen front and back view.

This module uses SPI communication – see the wiring below . To control the display we’ll use the TFT library, which is already included with Arduino IDE 1.0.5 and later.

The TFT display communicates with the Arduino via SPI communication, so you need to include the SPI library on your code. We also use the TFT library to write and draw on the display.

In which “Hello, World!” is the text you want to display and the (x, y) coordinate is the location where you want to start display text on the screen.

The 1.8 TFT display can load images from the SD card. To read from the SD card you use the SD library, already included in the Arduino IDE software. Follow the next steps to display an image on the display:

Note: some people find issues with this display when trying to read from the SD card. We don’t know why that happens. In fact, we tested a couple of times and it worked well, and then, when we were about to record to show you the final result, the display didn’t recognized the SD card anymore – we’re not sure if it’s a problem with the SD card holder that doesn’t establish a proper connection with the SD card. However, we are sure these instructions work, because we’ve tested them.

In this guide we’ve shown you how to use the 1.8 TFT display with the Arduino: display text, draw shapes and display images. You can easily add a nice visual interface to your projects using this display.