STM32 MCUs Products

I need to write firmware for STM32H7xx to interact with an SPI flash memory chip. (STM32 master, 8-bit, full-duplex polling, no CRC and application controlled #CS.) I am using STM32CubeIDE 1.14.0 and used the device configuration tool to produce my SPI1 configuration code using LL library calls.I encountered problems with code based upon HAL library hanging whilst reading to verify a write. So I wish to use either the Low-Level or register based programming. I have written firmware for SPI peripherals before but this STM32H7xx is a whole new level.Yes, I have read, re-read and read again the RM0468 Reference Manual. The poor English quality and lack of clear procedures do not help. It's like trying to learn a foreign language using a dictionary. I am struggling to find any good material for this family of chips. I have spent days on this and getting nowhere.Thanks.

​Here's how I implemented a custom bootloader using the STM32L475. I thought I would share since I have seen so many posts from people having issues invoking their application from their bootloader.​I attempted to post this as an idea in the knowledgebase, however it kept giving me an invalid link.​In my case, the bootloader is located at 0x08000000-0x0801FFFF (128K). My bootloader uses interrupts, the UART, timers, I2C, including the USB host (MSC class) so that application code can either be downloaded via a proprietary UART protocol or via a .hex file on the USB thumb drive. All of that easily fits within the 128K space.​My application code occupies 0x08020000 up to the remainder of the 896KB space. I defined an application header from 0x08020000-0x080207FF (2KB) in the linker file, so technically my application starts at 0x08000800. The application header contains the firmware version and a CRC hash for the ent

I need to debug an application code which is not on the default flash address (0x8000000) but it is at 0x8008000. I just changed the flash origin address to that value. When the execution reaches the CAN initialization part, the program counter goes outside of program code (0x8000f44). Note that the code work as expected if I move the origin flash address to the default value in the linker script.Here is a minimum reproducible example: #include "main.h" CAN_HandleTypeDef hcan1; void SystemClock_Config(void); static void MX_GPIO_Init(void); static void MX_CAN1_Init(void); int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_CAN1_Init(); /* USER CODE BEGIN 2 */ // Setup can const uint32_t filter_mask = 0x00000000; const uint32_t filter_id = 0x00000000; CAN_FilterTypeDef canfilterconfig = (CAN_FilterTypeDef) { .FilterBank = 0, .FilterActivation = CAN_FILTER_ENABLE, .FilterFIFOAssi

I want to configure the BLE of STM32 BL475E IoT-01A so that it could send and receive data via bluetooth from another Nucleo board.I couldn't able to find any proper resources related to this board.If it is there,kindly share the link

I was doing some tests on a NUCLEO-G071RB and I found out that the ADC has always some sort of offset in its digital output. I measure the tension on the MCU's pin and it's zero volts, but when I read the ADC the output is not zero. It can be 26-27 digits, 50-51 digits or 75-76 digits depending on the board that I'm testing. This happens also with an "empty" project where the ADC read is the only action that I'm doing, and I'm sure that the tension on the physical pin is zero Volts. Why I do get this behaviour? Is it normal?

//STM32F0 PB3 interrupt part program://////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void EXTI2_3_IRQHandler(void){if((EXTI->PR & ((uint32_t)0x00000008)) != 0)  /* Check line 3 has triggered the IT */{printf("EXTI2_3_IRQHandler:PR=%d\r\n",(EXTI->PR & ((uint32_t)0x00000008)));。。。。。。。。。。。/* Clear the EXTI line 3 pending bit */EXTI->PR = ((uint32_t)0x00000008);//    printf("EXTI2_3_IRQHandler \r\n");} } void init_zerox_pin(void){GPIO_InitTypeDef GPIO_InitStruct = {0}; 

I want to communicate with STM32f427 processor and 3 sensors via SPI. I want to use only SPI1 line. I need 3 chip select pins. There are 2 SPI1_NSS pins on the datasheet of the processor. What can I use as 3 CS pins? Is any GPIO pin suitable?

Can any one confirm that STM32G030k8 MCUs can be implemented for DALI-2 lighting.Is the memory works.

Hello, I'm trying to use the stm32u5 585 and I'm having a bad time trying to figure out what I am doing wrong. I am getting about 1.2mA in stop mode 2 when I should be getting around 8.95+ uA.I've disabled all SRAM and everything else in the PWR section in CubeMXI have my voltage scale at range 4My clock is at 16MHzI set all my pins to analogueI suspended and resumed tick in case stopmode was leaving early.I've tried following the workshops and examples from other similiar stm32u5 products, no luck.Can someone please clarify? Please explicitly write the steps of how to achieve micro-amps in stop mode. I am using JP3 to measure current consumption to my stm32u5 chip. 

I'm looking to know what is the best ST microcontroller that works best for ultra low temprature -80c and liquid nitrogen ?I understand that full functionality is not guaranteed as per the specs. Note: external oscilator will be used as HSE that will avoid internal oscillator drifting at ultra low tempratures

I'm getting Hard Fault Exception at -40c while using STM32F0412VET. Any idea how to avoid such exception ? setting certain registers or disabling certain peripherals?As well is there sample implementation to return to previous context before the exception? ThanksIreen Abdelmalak

I am searching for a way to establish a ethernet connection on STM32 B-U585I-IOT02A Discovery board, for communicating with MQTT brocker. I am using Visual Studio Code, with Platformio (Arduino FrameWork).Do you have any suggestions / working examples ? i can't find anything on the Web, and all libraries are not compatible with the microcontroller ( STM32U585AI ).Thank you !Elli

Hi all, recently I made a board with H725RGV6, but when I tried to flash a test firmware for the first time, I got " Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication" from STM32CubeProgrammer (I'm using STLink V2). I measured the power supply and VCAP, VDD looks good at 3.1v, but the VCAP is only 100mv which is not correct. I also tried to remove the third 2.2uF for VCAP and connect PIN66 to PIN49, so VCAP is around 80mv.- I've checked the orientation.- I soldered the chip with a 700F heat gun and tried 3 chips in total.- Updates: I tried to supply 1.2V to VCAP, then I can connect to the chip. But why? Shouldn't the chip have internal LDO?Below is the power supply part schematic. Does any one have any suggestions?

Hi,I am using the STM32F411 MCU and i am trying to generate PWM signal with fixed dutycycle and frequency.clock configuration and timer settings is attached below.When I set the PWM frequency to 10KHz and the duty cycle to 50%, I get the output as 10 KHz frequency a

Hello everybody again. I shared a similar post a while ago, but I couldn't express it well and couldn't find a solution. Aim of the program is handling rotary encoder data, which is a 5-digit integer number. Encoder setup is done. I want to take this encoder data and write it to a terminal program via USB connection (UART is not used). But, terminal program is not able to read integer value. So I wanted to convert the integer to ASCII. When I assign arbitrary number to array, everything is fine, I read correct value. But I can't assign encoder value to array. All I read is '00000' in terminal. What should I do from now on? (I'm using STMF103C8T6 and Hercules as terminal software)  /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ***********************************************************

Hello ST, I am trying to integrate ThreadX into TFM_Appli-NonSecure project. Mostly I am able to integrate it and execute but to make a thread run, I have to comment _tx_initialize_low_level(); API in _tx_initialize_kernel_enter() function.This all work smoothly until I try thread context switching. My initial understanding assumption says pendsv_hander is not getting called.Could I get some more insight to resolve this issue as there is no direct example available for this.

Hello everyone,I’m working with an STM32 G0 microcontroller and encountering an issue with reading data from two sensors. One of the sensors provides consistent and accurate readings, however, the second sensor shows intermittent spikes to zero in the readings. These spikes occur periodically and affect the integrity of the data.I’ve checked both hardware and software configurations, but haven’t found any obvious issues. Has anyone experienced a similar problem or have any idea what might be causing these zero spikes in the sensor data reading?I know I’m not showing any information about my configuration but if anywho thinks could help me i share as much as i haveI left the signal reading of the adc that goes wrong

I'm using a Nucleo-G474RE to measure a signal via ADC1.ADC measures are triggered by TIM2, then transferred via DMA1 into a large buffer (60KB).When the buffer is full an interrupt is generated and I give the DMA another 60KB buffer.After that, everything is stopped and I upload the buffers to the PC via LPUART1.Finally I check the result with a 100Hz sinusoidal input.So far so good, I can set TIM2 up to 3.86333MHz, but anything above will result in a sub-sampling output (between 2 and 3Msmpl/s).That's 44 cycles (clock is 170MHz on all buses). I was expecting to go higher, since I set the ADC measure time to its minimum (2.5 cycles sampling time, 8 bits, no filtering), so a measure should take ~11 cycles, plus the DMA transfer (1 byte of data), so maybe 20 cycles per measure.No transfer error or ADC overrun is reported, and nothing else runs during the measures.My question is: what could possibly eat up 24 cycles per measure, a

Hello,I am trying to transmit some data on my STM32F042F6P6. But my PC's serial monitor only picks up some of it. Here is the code and the serial monitor output:void readAllRegs(void){ uint8_t value; for (uint8_t addr = 0x00; addr <= 0x2E; addr++) { value = readReg(addr); printf("0x%x: 0x%x (%d) \n", addr, value, value); fflush(stdout); }}int _write(int file, char *ptr, int len){ CDC_Transmit_FS((uint8_t *)ptr, len); return len;}0x0: 0x29 (41) 0x1: 0x2e (46) 0x4: 0xd3 (211) 0x6: 0xff (255) 0x7: 0x4 (4) 0xa: 0x0 (0) 0xd: 0x1e (30) 0x10: 0x8c (140) 0x13: 0x22 (34) 0x14: 0xf8 (248) 0x16: 0x7 (7) 0x19: 0x76 (118) 0x1a: 0x6c (108) 0x1d: 0x91 (145) 0x1f: 0x6b (107) 0x20: 0xf8 (248) 0x23: 0xa9 (169) 0x25: 0x20 (32) 0x26: 0xd (13) 0x29: 0x59 (89) 0x2c: 0x88 (136) When I

Hi,I am using STM32F205 Board for our development. We were using HSI (16MHZ) as the clock and found out that HSI has issues with high temperatures. I am calibrating HSITRIM value to fix the clock drift issue and we already have 50 boards manufactured. Now we decided to use crystal oscillator (25MHz) as HSE.How do I determine if we connected external crystal oscillator to stm32 to configure the clock correctly?

Hi,I'm working on stm32l496 and I try to write data to a custom flash section, in the .ld file I put new sector :/* Memories definition */MEMORY{[...]FLASH (rx) : ORIGIN = 0x08003800, LENGTH = 0x07B800config(rx) : ORIGIN = 0x0807F000, LENGTH = 2Kcommon(rxw) : ORIGIN = 0x0807F800, LENGTH = 2K}[...]PROVIDE(_config_page_start = ORIGIN(config)); PROVIDE(_common_page_start = ORIGIN(common));I set it like this to flash config or common page without touch my program section.I have no difficulty to read data from this pages. But when I use `HAL_FLASH_Program()` function to write data in 'common' section, I have an error.After reseach the error may be due to ASSERT checking if the address is whitin the flash range.This is my code :error_e mcu_flash_program_data(uint32_t start_addr, const void *data, size_t size) { HAL

Hi,I have a board with an STM32U575 at the core.I'm attempting to set up SAI receiver in I2S mode, with 32-bit 48kHz sampling. See my configuration of SAI A below: I also want to receive the data continuously in circular mode via DMA (or GPDMA in the case of this MCU).Reading other sources, I've concluded that the following setup should be established:

  static uint16_t aDST_Buffer_1[BUFFER_SIZE] = {0}; static uint16_t aDST_Buffer_2[BUFFER_SIZE] = {0}; LL_DMA_LinkNodeTypeDef pNode1, pNode2; /** * @brief LPDMA1 transfer configuration * @PAram None * @retval None */ void BspLPDMA1Init(void) { /* DMA node configuration declaration */ LL_DMA_InitNodeTypeDef DMA_InitNodeStruct; LL_DMA_InitLinkedListTypeDef DMA_InitLinkedListStruct; /* Set node configuration ################################################*/ /* Set node type */ DMA_InitNodeStruct.NodeType = LL_DMA_LPDMA_LINEAR_NODE; /* Set node configuration */ DMA_InitNodeStruct.BlkHWRequest = LL_DMA_HWREQUEST_SINGLEBURST; DMA_InitNodeStruct.Direction = LL_DMA_DIRECTION_MEMORY_TO_MEMORY; DMA_InitNodeStruct.DestAllocatedPort = LL_DMA_DEST_ALLOCATED_PORT1; DMA_InitNodeStruct.DestBurstLength = 1U; DMA_InitNodeStruct.DestIncMode = LL_DMA_DEST_INCREMENT; DMA_InitNodeStr

I am starting a product design tentatively using the STM32F072RBT6.I want to determine how soon the CTS input must go low to prevent the USART from transmitting the next byte.Even informed opinion would be appreciated; but a reference to documentation or direct experience would be  preferable.One note in the reference manual says, "For correct behavior, CTS must be de-asserted at least 3 USART clock source periodsbefore the end of the current character."  page 740, Reference Manual PDF [What about the first character?]  I assume that what they mean is "before the beginning of the next character"? Which clock is "USART clock source"?In this diagram fro

Hello,I'm trying to work with the ADC of the STM32L433 microcontroller. The Reference manual (RM0394) on page 448 it says : The following formula gives the actual VDDA voltage supplying the device:VDDA = 3.0 V x VREFINT_CAL / VREFINT_DATAWhere can I found the VREFINT_CAL value, I'm not able to find the address on the RM ? Thank youRiccardo