stm32

问题 Upd. See the end of post for working code I'm already mad with this. How can I make checksum from CRC unit on stm32f103 match with software implementation? Stm has polynom 0x04C11DB7 and reset value 0xFFFFFFFF . So I've tried to calculate it in python. Code for stm: uint32_t crc32_hard_block(uint32_t *buf, uint32_t len) { CRC_ResetDR(); uint32_t crc = CRC_CalcBlockCRC(buf, len); return crc; } uint32_t buf[4] = {50, 10, 243, 147}; uint32_t crc_hard_block = crc32_hard_block(buf, 4); Code for

问题 I'm trying to run my Nucleo f401re on 80mhz from HSE int F4xxx::clockInit(int pllM, int pllN, int pllP, int pllQ) { enableHse(); //FLASH CLEAR_BIT(FLASH->ACR, FLASH_ACR_PRFTEN); FLASH->ACR&= ~FLASH_ACR_LATENCY; FLASH->ACR |= FLASH_ACR_LATENCY_5WS | FLASH_ACR_ICEN | FLASH_ACR_DCEN|FLASH_ACR_PRFTEN; //set HSE as PLL source RCC->PLLCFGR = RCC_PLLCFGR_PLLSRC_HSE; // RCC->CR &= ~(RCC_CR_PLLON); //disable PLL before changes // RCC->PLLCFGR = pllM|(pllN<<6)|(((pllP>>1)-1)<<16)|RCC_PLLCFGR_PLLSRC_HSE

问题 I'm trying to run my Nucleo f401re on 80mhz from HSE int F4xxx::clockInit(int pllM, int pllN, int pllP, int pllQ) { enableHse(); //FLASH CLEAR_BIT(FLASH->ACR, FLASH_ACR_PRFTEN); FLASH->ACR&= ~FLASH_ACR_LATENCY; FLASH->ACR |= FLASH_ACR_LATENCY_5WS | FLASH_ACR_ICEN | FLASH_ACR_DCEN|FLASH_ACR_PRFTEN; //set HSE as PLL source RCC->PLLCFGR = RCC_PLLCFGR_PLLSRC_HSE; // RCC->CR &= ~(RCC_CR_PLLON); //disable PLL before changes // RCC->PLLCFGR = pllM|(pllN<<6)|(((pllP>>1)-1)<<16)|RCC_PLLCFGR_PLLSRC_HSE

问题 I am working with STM32F103C8T6 and would like to use CMSIS, which is essentially just register definitions and no code, to make my life easier while still staying at a low level. The problem is that I have no idea how to install the library for use on the command line with Makefile. All documentation seems to be bound with a vendor-specific IDE like STM32CubeIDE. I suppose the first thing to do is to download the CMSIS library, which I found on GitHub. However, after unzipping ARM.CMSIS.5.6

问题 I need to link my firmware (running on STM32L4x6, built with arm-none-eabi_gcc) with two third party libraries (I don't have the source code of these libs). One lib is compiled using hard float abi, and the other is not using float at all and linked probably with soft float abi. I know both abis are not compatible and I fully understand the difference between them, but what if a library does not use float operation at all ? What is preventing to link it with some other code using whatever abi

问题 I need to link my firmware (running on STM32L4x6, built with arm-none-eabi_gcc) with two third party libraries (I don't have the source code of these libs). One lib is compiled using hard float abi, and the other is not using float at all and linked probably with soft float abi. I know both abis are not compatible and I fully understand the difference between them, but what if a library does not use float operation at all ? What is preventing to link it with some other code using whatever abi

问题 I need to link my firmware (running on STM32L4x6, built with arm-none-eabi_gcc) with two third party libraries (I don't have the source code of these libs). One lib is compiled using hard float abi, and the other is not using float at all and linked probably with soft float abi. I know both abis are not compatible and I fully understand the difference between them, but what if a library does not use float operation at all ? What is preventing to link it with some other code using whatever abi

问题 I need to link my firmware (running on STM32L4x6, built with arm-none-eabi_gcc) with two third party libraries (I don't have the source code of these libs). One lib is compiled using hard float abi, and the other is not using float at all and linked probably with soft float abi. I know both abis are not compatible and I fully understand the difference between them, but what if a library does not use float operation at all ? What is preventing to link it with some other code using whatever abi

问题 I would like to test CLion for my stm32 project since it now support remote debugging! To do so I need to setup Cmake for my project and it is my issue. I tried using this link which seems to be depreciated so I made some changes. It almost builds but there is a problem with the .elf .bin .hex. CMakeLists.txt: project(F466cmake) cmake_minimum_required(VERSION 3.10) add_definitions(-DSTM32F446xx) file(GLOB_RECURSE USER_SOURCES "Src/*.c") file(GLOB_RECURSE HAL_SOURCES "Drivers/STM32F4xx_HAL

问题 Periodically, the program enters the HardFault_Handler. In the register HFSR set bit FORCED and in UFSR register set UNALIGNED . The project uses STM32F417, FreeRtos, LWIP. In most cases, the error in the stack are LWIP function. The error occurs rarely once a few days. The program is compiled with the flag --no_unaligned_access . It is unclear why there is such an error - while --no_unaligned_access flag is enabled and even every few days, and second whether it is possible to process or