====STM32 H745 discovery====

<wrap right>
{{boards:coremark.jpg?200|Demo app}}
\\ \\
{{boards:stm32h745.jpg?200|Architecture}}
</wrap>

The STM32H745I discovery kit contains a dual core STM32H745XIH6 processor
with various internal and external peripherals.

External peripherals include the following
<code>
4.3" touchscreen
Audio codec
Microphone
SDRAM
EMMC
FLASH
</code>

===Board layout===

==Top view==
<code>
       MICROPHONE   POWER     USB    USB
       LINE OUT/IN  HEADER    STLINK POWER
      --------------------------------------
JTAG  |                                    |
      |   4.3" 480x272 WQVGA TOUCHSCREEN   | LEDS
STMOD |                                    |
      -------------------------------------|
       USER     RESET             ETHERNET
       BUTTON   BUTTON
</code>

The STMOD interface supports MikorBUS, ESP-01 and GROVE I2C/UART.

===Memory layout===

The default linker scripts for FLASH define the following

==CM7==

<code>
FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 1024K
RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 128K
ITCMRAM (xrw)      : ORIGIN = 0x00000000, LENGTH = 64K
</code>

==CM4==
<code>
FLASH (rx)      : ORIGIN = 0x08100000, LENGTH = 1024K
RAM (xrw)      : ORIGIN = 0x10000000, LENGTH = 288K
</code>

===Pinout===

<code>
LED
PI13 LD6 RED
PJ2  LD7 GREEN
PD3  LD8 GREEN

BUTTON
PC13  B1
RESET B2

X1 25 MHz OSC MODULE
OSC_IN

X2 NX3215SA-32.768K
OSC32_IN
OSC32_OUT
</code>
===OpenOCD===

<code>
/mnt/c/Apps/OpenOCD-20230712-0.12.0/bin/openocd.exe -f "interface/stlink.cfg" -c "transport select hla_swd" -f "target/stm32h7x.cfg"
Open On-Chip Debugger 0.12.0 (2023-07-12) [https://github.com/sysprogs/openocd]
Licensed under GNU GPL v2
libusb1 09e75e98b4d9ea7909e8837b7a3f00dda4589dc3
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
hla_swd
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1800 kHz
Error: libusb_open() failed with LIBUSB_ERROR_NOT_SUPPORTED
Info : STLINK V3J13M4 (API v3) VID:PID 0483:3754
Info : Target voltage: 3.265339
Info : [stm32h7x.cpu0] Cortex-M7 r1p1 processor detected
Info : [stm32h7x.cpu0] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for stm32h7x.cpu0 on 3333
Info : Listening on port 3333 for gdb connections
</code>

===Resources===

[[https://www.st.com/en/evaluation-tools/stm32h745i-disco.html|Product page]]

[[https://www.st.com/resource/en/data_brief/stm32h745i-disco.pdf|Data brief]]

[[https://www.st.com/resource/en/user_manual/um2488-discovery-kits-with-stm32h745xi-and-stm32h750xb-mcus-stmicroelectronics.pdf|User manual]]

[[https://www.st.com/resource/en/user_manual/um2695-stmod-fanout-expansion-board-for-stm32-discovery-kits-and-evaluation-boards-stmicroelectronics.pdf|STMOD break-out board manual]]

[[https://www.st.com/resource/en/schematic_pack/mb1381-h745xi-b02-schematic.pdf|Schematic]]

[[https://www.st.com/en/microcontrollers-microprocessors/stm32h745xi.html|MCU product page]]

[[https://www.st.com/resource/en/datasheet/stm32h745xi.pdf|MCU data-sheet]]

[[https://www.st.com/resource/en/reference_manual/rm0399-stm32h745755-and-stm32h747757-advanced-armbased-32bit-mcus-stmicroelectronics.pdf|MCU reference manual]]

[[https://www.st.com/resource/en/application_note/dm00306681-stm32h72x-stm32h73x-and-singlecore-stm32h74x75x-system-architecture-and-performance-stmicroelectronics.pdf|MCU architecture]]

[[https://github.com/STMicroelectronics/STM32CubeH7|ST demos]]

[[https://www.freertos.org/STM32H7_Dual_Core_AMP_RTOS_demo.html|FreeRTOS dual core demo]]

[[https://github.com/FreeRTOS/FreeRTOS/tree/main/FreeRTOS/Demo/CORTEX_M7_M4_AMP_STM32H745I_Discovery_IAR|FreeRTOS dual core demo on github]]