About Iivan.1

Iivan.1 · 2022-07-13

Hello! I'm developing application using STM32H745 with uart interface. The problem is the behaviour of uart baudrate. I configure with hal driver uart on baudrate 115200 and try echo with terminal. The problem is that sometimes i recieve wrong data ...

Iivan.1 · 2022-05-20

I'm developing application on stm32H7 and a need to execute small function from RAM. I add RamFunc derective, and describe in linker *(.RamFunc) in .data section. As a result, i certainly see, that function code moved to RAM address space. I compare ...

Iivan.1 · 2022-05-14

Hi to everyone. I'm developing bootloader for stm32h745. My idea is to rewrite FLASH of the M4(0x81000000) core using proramm executing int M7 core. So For this first i need to stop M4, programm M4 flash and then restart it. The issue is how to stop ...

Iivan.1 · 2021-11-23

I am trying to set up ethernet on stm32h745iit6.I bare ethernet project from the H7 examples and use (low_level_output) func from ethernetif.cpp.I send buffer, located 0x24000008, where dma can access. And ethernet always send only init string of buf...

Iivan.1 · 2022-07-13

i use external crystal resonator 25MHz. About rx tx baudrates. I measure frequence ot TX of MCU, when it transmits. On TX of PC terminal, when PC transmits. Frequences is as expected, but whet it's same, on MCU i recieve with errors.I use asynchronou...

Iivan.1 · 2022-07-13

there is no problem with clock source of MCU. As a mentioned, i measure baudrate on MCU, when it transmits, its ok. Also on this board already working sdram, spi fram, and lan.

Iivan.1 · 2022-05-24

Solved ! The problem was that by default there was some kind of MPU. Maybe mbed OS protect all memory, i'm not sure. But i try to add HAL_MPU_Disable(); and all start work. Then i configure mpu for my memory region as MPU_INSTRUCTION_ACCESS_ENABLE a...

Iivan.1 · 2022-05-23

i just watched assembler layer and found, that in step of GO_INTO my RAM function we take some address from FLASH, put it in r3 register and then jump to this address. Content of r3 register is 0x10000e09 but my function locates by 0x10000e08 addr. I...

Iivan.1 · 2022-05-23

How can I determine what Interrupt or Faulе caused Default_Handler ?

User statistics

User Activity

STM32H7 UART BAUD RATE ISSUE

Executing code from RAM problems

How can I stop and restart second M4 core of the STM32H745 from M7 core

wierd behavior of ETH on STM32H7

Re: STM32H7 UART BAUD RATE ISSUE

Re: STM32H7 UART BAUD RATE ISSUE

Re: Executing code from RAM problems

Re: Executing code from RAM problems

Re: Executing code from RAM problems