Tagged: stm32f429discovery

STMPE811 touch sensor on STM32F429-Discovery board 25

Library 10- STMPE811 Touch screen driver for STM32F429 Discovery board

STM32F429 Discovery board has LCD with ILI9341 controller and resistive touch screen with STMPE811 controller from STMicroelectonics. The STMPE811 is a 4-wire resistive touch screen controller with a GPIO (general purpose input/output) port expander able to interface a microcontroller or a main digital ASIC via I2C or SPI serial interface. The STMPE811 offers great flexibility, as each I/O can be configured as input, output or specific functions. The touch screen controller is enhanced with a movement tracking algorithm to avoid excessive...

SPI diagram 118

Library 05- SPI for STM32F4

Let’s say something about SPI. SPI (or Serial Peripheral Interface) is a protocol named by Motorola. With him you can control sensors, SD card and much more. SPI protocol works in a ways where there is one master and multiple slaves, In other words, master is our STM32F429 Discovery board and let’s say, SD card is slave.

Library 03- STM32F4 system clock and delay functions 36

Library 03- STM32F4 system clock and delay functions

In first tutorial about discovery board we were blinking led. But I said nothing about system clock speed. In while loop we just use

for some delay, to actually see how led was blinking. We didn’t know at which clock speed our processors work and for first time, I think you didn’t even ask yourself.