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Practice 1

Practice 1. Asst. Prof. Dr. Alper ŞİŞMAN. What is STM32F Discovery board. STM32F407VGt6 MCU with 32-bit ARM Cortex-MF4 core, 1 MB Flash and 192 KB RAM ST-Link debugger External or USB power options (5V). 8-LED indicators

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Practice 1

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  1. Practice 1 Asst. Prof. Dr. Alper ŞİŞMAN

  2. What is STM32F Discovery board • STM32F407VGt6 MCU with 32-bit ARM Cortex-MF4 core, 1 MB Flash and 192 KB RAM • ST-Link debugger • External or USB power options (5V). • 8-LED indicators • red/green LED Indicating the communication with the computer (debugging, programming etc.) • Red power on indicator LED • 4 general purpose LEDs (orange, green, red and blue) • 2 USB LEDs (green,red) indicating USB port of MCU active.

  3. A reset and a general purpose button • Micro USB connector for USB applications • 3-dimension digital accelerometer (LIS302DL) • Omni-directional MEMS microphone (MP45DT02) • DAC with integrated Class-D speaker driver (CS43L22) • 100-pin header to reach all pins of the MCU

  4. What is STM32F407VG MCU • Core: ARM 32-bit Cortex™-M4F CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 168 MHz, and DSP instructions • Memories • Up to 1 Mbyte of Flash memory • Up to 192+4 Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM • Flexible static memory controller supporting Compact Flash, SRAM, PSRAM, NOR and NAND memories • LCD parallel interface, 8080/6800 modes

  5. 3×12-bit, 2.4 MSPS A/D converters: up to 24 channels and 7.2 MSPS in triple interleaved mode • 2×12-bit D/A converter • Up to 140 I/O ports with interrupt capability • Up to 15 communication interfaces • Up to 3 × I2C interfaces (SMBus/PMBus) • Up to 4 USARTs/2 UARTs (10.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control) • Up to 3 SPIs (37.5 Mbits/s), 2 with muxed full-duplex I2S to achieve audio class accuracy via internal audio PLL or external clock • 2 × CAN interfaces (2.0B Active) • SDIO interface

  6. Advanced connectivity • USB 2.0 full-speed device/host/OTG controller • 10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII • 8- to 14-bit parallel camera interface up to 54 Mbytes/s • Up to 17 timers: up to twelve 16-bit and two 32-bit timers up to 168 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input • Debug mode • Serial wire debug (SWD) & JTAG interfaces • Analog random number generator • CRC calculation unit, 96-bit unique ID • RTC: subsecond accuracy, hardware calendar

  7. Compiler • KeilSTM32 C compiler can be used. (32K free version) • Create a new project using project tab • Choose the MCU type (STM32F407ZG) • Add new item to source group1: C file, the name: main • Include the processor header file: STM32F4xx.h • Each code file must have SystemInit() and main() functions • Compile it.

  8. Debugger • Set simulation mode • Activate HW floating point block in system init function: (*((int*)0xE000ED88))|=0x0F00000; • Write the main code as follows: • int sayi1; • int sayi2=5000, sonuc; • sayi1 = sayi2 % 3; • sonuc=sayi1+sayi2; • Hit the debug button, add watch windows and see how the number are changing as the program executing step by step

  9. HW Debugging • Download USB drivers from ST’s internet site. They must be installed before. • Change the debug mode of your project to ST-link debugger (Use options menu) • Change simulation modedebugger mode (Debug menu) • Select Flash programmer as ST-debugger(Flash utilities menu) • Choose the driver for flashing (from settings button of the flash utilities menu) • Connect the discovery kit via mini USB connector • Upload the compiled the code • Execute the code step by step

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