STM32 MCUs Products

The datasheet for STM32U585 and 575 list there are two SAI on the chip. In CubeMX I can only see SAI1 (A and B sub-blocks)Datasheet CubeMX pin menu    

What does DMA Request synchronization do? In the case of SPI_Rx does it trigger SPI reception when TIM12 updates (overflow) if i set synchronization signal to be TIM12 TRGO

I am attempting to display to an ILI9881C based panel. After successfully initialising and testing the panel using DSI only, I am working on DSI Video mode to pull data from a frame buffer via LTDC.I have the DSI configured as follows  static void MX_DSIHOST_DSI_Init(void) { /* USER CODE BEGIN DSIHOST_Init 0 */ /* USER CODE END DSIHOST_Init 0 */ DSI_PLLInitTypeDef PLLInit = {0}; DSI_HOST_TimeoutTypeDef HostTimeouts = {0}; DSI_PHY_TimerTypeDef PhyTimings = {0}; DSI_VidCfgTypeDef VidCfg = {0}; /* USER CODE BEGIN DSIHOST_Init 1 */ /* USER CODE END DSIHOST_Init 1 */ hdsi.Instance = DSI; hdsi.Init.AutomaticClockLaneControl = DSI_AUTO_CLK_LANE_CTRL_ENABLE; hdsi.Init.TXEscapeCkdiv = 4; hdsi.Init.NumberOfLanes = DSI_TWO_DATA_LANES; PLLInit.PLLNDIV = 119; PLLInit.PLLIDF = DSI_PLL_IN_DIV3; PLLInit.PLLODF = DSI_PLL_OUT_DIV2; if (HAL_DSI_Init(&hdsi, &PLLInit) != HAL_OK) { Error_Handler(); } HostTimeouts.TimeoutCkdiv = 1; HostTimeouts.HighSpeedTransmissio

I like to use SPI in continous DMA mode together with a SPI-slave that uses the falling-edge of the spi clock (AS5048A: https://ams-osram.com/products/sensor-solutions/position-sensors/ams-as5048a-high-resolution-position-sensor). So, I have to use CHPA=1. But setting this, the NSSP hardware management does not work.I'm looking for a solution that makes continous dma handling possible. As a workaround I am using an interrupt-trigger GPIO solution for the NSSP pin. But that results in a interrupt load, that would be unneccessary, it the dma could operate circular continous.I there another workaround? Maybe using some hardware modification?Thanks!

Hello, I'm using Nucleo H723ZG.In my project, i need to detect a rising edge to trigger a callback. What i have done is that i setup a GPIO as external interrupt, and i verified the code by manually connecting and releasing from 3v3 pin. The actual signal i want to trigger is high for approx 38ns , and the callback is not triggering.What is the best solution for this?System operating at - 480MHzPeripheral clocks - 60MHzTimer clocks - 120MHz edit : Can i use Timer input capture for that, does using it in one pulse mode mean it detects a rising edge and then resets until next trigger (as a slave timer)edit: I tried the timer input capture too, but still same effect, I used the HAL_TIM_IC_CaptureCallback , One pulse mode is enabled, it is in slave mode, I even applied a 1MHz signal still callback is not triggering, when i applied a 100KHz signal the callback triggers properly. edit: upto 400KHz signal the below callback is properly triggeringvoid HAL_TIM_IC_CaptureCall

Split from this thread. Thank you for your previous responses and guidance. We are now planning to move to the STM32H750XBH6 (BGA package) with a 32-bit SDRAM (IS42S32400J-6TLSDRAM ) interface in our custom board design. Our project uses a 12.1-inch display with a 1024x768 resolution and the RGB to LVDS transmitter ic  which is DS90C385AMTX_NOPB display ic  In our previous design with a 16-bit SDRAM, we observed display rendering and FPS issues, which affected performance. To overcome this, we are considering upgrading to a 32-bit SDRAM for improved rendering speed and smoother graphics performance. Before proceeding further, we would like your confirmation on whether using a 32-bit SDRAM with the STM32H750XBH6 will actually improve the display rendering performance for our 1024x768 resolution. If there is no significant improvement even with 32-bit SDRAM, then moving ahead with this design would not be worthwhile. Please confirm this so that we can

Hello stm community. I am working on a project involving STM32H7 series MCU with Raw LCD panel of 24 bits. Since the display has no IC i am using the internal LTDC component to drive the lcd. So i have some questions can i drive the lcd backlight with My STM board or i just give some voltage to it . Some lcd says it needs 16 v power supply. Is there any complications in this and is it possible to do this way drive a Raw parallel 24 bit lcd with stm32 without lcd IC. give some expert opinions.

Hello,another day, another N6 "issue" :)I want to do RAM to RAM copy by HPDMA, but the data never get copied from Src to Dest, Dest always stays unmodified. I have checked the 'DMA_RAMToRAM' example for N6 and went from there, but with no success.DMA Init:__HAL_RCC_HPDMA1_CLK_ENABLE(); HAL_NVIC_SetPriority(HPDMA1_Channel1_IRQn, 0, 0); HAL_NVIC_EnableIRQ(HPDMA1_Channel1_IRQn); handle_HPDMA1.Instance = HPDMA1_Channel1; handle_HPDMA1.Init.Request = DMA_REQUEST_SW; handle_HPDMA1.Init.BlkHWRequest = DMA_BREQ_SINGLE_BURST; handle_HPDMA1.Init.Direction = DMA_MEMORY_TO_MEMORY; handle_HPDMA1.Init.SrcInc = DMA_SINC_INCREMENTED; handle_HPDMA1.Init.DestInc = DMA_DINC_INCREMENTED; handle_HPDMA1.Init.SrcDataWidth = DMA_SRC_DATAWIDTH_HALFWORD; handle_HPDMA1.Init.DestDataWidth = DMA_DEST_DATAWIDTH_HALFWORD; handle_HPDMA1.Init.Priority = DMA_LOW_PRIORITY_HIGH_WEIGHT; handle_HPDMA1.Init.SrcBurstLength = 2; handle_HPDMA1.Init.DestBurstLength = 2; handle_HPDMA1.Init.TransferAllocatedPort = DMA_SRC_ALLOC

I'm looking for an ST microcontroller that can do I2S receiving while remaining low power, presumably by keeping the core asleep and using DMA to copy I2S chunks to a buffer. I think I saw a video demo of this at some point somewhere on the website, but now I cant find it. When I say low power, I mean <1mA, preferably <200uA if possible. I assume this would be something like an M0 or M4 core. 

When using SPI6 in Slave mode with TX DMA in Circular mode, the SPI FIFO is not updated with data from the DMA buffer for the first SPI FIFO size (8 bytes).     Both the SPI Master and SPI Slave were debugged: The SPI Master transmits one frame. On the SPI Slave board, after checking the reception using LL_BDMA_IsActiveFlag_TC1(BDMA), the MISO data is updated. The SPI Master then checks the received data on the SPI Slave side using a breakpoint. static void MX_SPI6_Init(void) { LL_SPI_InitTypeDef SPI_InitStruct = {0}; LL_GPIO_InitTypeDef GPIO_InitStruct = {0}; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0}; PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SPI6; PeriphClkInitStruct.Spi6ClockSelection = RCC_SPI6CLKSOURCE_D3PCLK1; if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) { Error_Handler(); } LL_APB4_GRP1_EnableClock(LL_APB4_GRP1_PERIPH_SPI6); LL_AHB4_GRP1_EnableClock(LL_AHB4_GRP1_PERIPH_GPIOA); LL_AHB4_GRP1_EnableClock(LL_AHB4_GRP1_PERI

Hi all,Im using STM32F410 uart 1 to transmit and receive.I use DMA to transmit bytes. I then use TC interrupt to send a break,then push an event to an event queue to signal that the transmitter is free.void interface_uart_tx_eot_isr(if_uart_t* p) { if (p->tx_last_in_chunk) { // Transmit break at end of tx work LockFromISR(); p->uart_dev->usart->CR1 |= USART_CR1_SBK; UnlockFromISR(); // register event for more tx data p->transmit_empty_handlerI(p->event_source); } }On the same uart I use DMA in circular mode to dump incoming bytes.Im using framing error interrupt to wake up a worker to deal with the received data.For the sake of this explanation, I have three stm32f410 devices connected in a ring1Tx -> 2Rx, 2Tx -> 3Rx, 3Tx -> 1Rx.So it is possible for, eg, device 2 to be recieving data as it is sending data.This is working well except:I find occasionally that I am missing a break interrupt and I'm pretty lost figuring it out.Oscilloscope shot uart_brea

We are using the STM32H7R7L8H6H microcontroller in our product design.During firmware initialization, we observed inconsistent behavior related to the USB voltage detector on different boards that share the same hardware design and firmware.Specifically, the following code auto generated by STM32Cube ide (stm32h7rsxx_hal_msp.c), this causes the MCU to halt on certain boards:if (HAL_PWREx_EnableUSBVoltageDetector() != HAL_OK) { Error_Handler(); } On some boards, the code runs normally, but on others, it enters Error_Handler() immediately after executing this function.Both boards have identical hardware configuration — USB is not used, and VDD33USB and VDD50USB are tied to 3.3 V.- Advise whether disabling the USB voltage detector is the recommended workaround when USB is not used.- Provide any official ST guidance or firmware-level / Hardware level workaround for this behaviour. - Should we modify the voltage level on the VDDUSB pin, or

Being fairly new to the STM32 architecture I find the following statement in the STM32F103 reference manual really confusing ... "..., this means that only one request must be enabled at a time." (the same also applies to the DMA2 controller). I think this statement should read as follows.... "..., this means that only one request can be serviced at a time." From my understanding (correct me if I am wrong) each DMA channel has its own interrupt vector (and their own addr\counter registers) , so even if every channel on DMA1 was enabled & signaled a request simultaneously the processor would be able to service each request deterministically based on the built-in channel priority order.  

Hi,I am trying to get USBPD running. I need a simple example code without RTOS. So I used CubeMX. As far as I see it should be easy. All I need to do is:- Turn on the UCPD1 under Connectivity. Here I set "Source". - Turn on the UCPD1 Interrupt- Turn on USART1 - Set the DMA settings of UCPD1 and USART1 (here I have used the settings of the working CubeH5 project)- Turn on USBPD under middlewares- Enable TRACER under utilities- Enable TRACER in USBPD under middlewares- Enable GUI_INTERFACE under utilities This config should work, but it is not working. There is no event handling.Now I need help. The ioc file is included. RegardsRoman   

Hello, I have an STM32F777ZIIT which is being used to gather SPI data in receive-only mode on four SPI channels and using DMA to buffer this data. The DMA buffers are 70 half-words long, configured for circular mode, and half the half-full and full interrupts set up. Using hardware timers, the external SPI devices are being triggered to transmit 35 samples every 1ms. This is being done on four SPI channels, with one of them (channel "D") being phase-delayed by 500 microseconds. Note that this is running on bare-metal.The expected behavior is to see all four channels receive the half-full interrupt after 1ms (D last), then the full interrupt after another 1ms.In a consistent fashion, I am seeing this pattern in the half full and full ISRs per channel. All four should have the same DMA configuration.Time (microseconds)Channel AChannel BChannel CChannel D758Half   768 Half  778  Half 788   Half2717Full   2727 

Hi. I designed a stm32 board an am trying to program it with a stm32 development board. i am having issues with programming it. This is my board design and my programming setup. I have connected the stm32f4 to my laptop to program it and the Integrated Circuit I'm using on my board is the stm32 g431. I know i have not pulled boot0 to low which is a problem i tried to resolve using option bytes where i set the nBoot1 byte to 0. But i have my boards boot up and then after clearing flash storage, they are usually stable. The board isn't dead since current is being drawn but the stm32 status LED is blank and when i try to connect to it with the stm32 programmer, i get ' Unable to detect Core ID. No stm32 target found. If your product uses debug authentication, please enable debug authentication. Please help me figure out what is wrong. This is the second board that has gone this way. I only have 3 more left.  

I am trying to program my custom board with STM32WB15CCU6E on it in Arduino IDE. I always upload the code to my nucleo-wb15 board to verify if it is working before uploading it to the custom board. The main difference between the chip used on nucleo-wb15 and STM32WB15CCU6E is that my custom board has no external 32.768 kHz crystal installed, so it mainly relies on HSE or LSI.However, I could not make my BLE module advertise on my custom board while it is working fine on the nucleo-wb15. I am suspecting except the Arduino code, I probably need to change something in the variant file. Anyone knows how to do it? thanks.

     Hi,I want to use STM32G431CB or STM32F411CEU6 to measure the time precisely.I need to know the external interrupt response time of GPIO,but I can not find it in datasheet and manual.can you tell me what is the value if the CPU frequency is 100MHz ?

Hi,I am using an STM32U545 on which I expect to use ADC4_IN1 and ADC4_IN18 in stop mode 2 (using LPBAM).I want to create two buffer (buff1 and buff2 uint16_t[32]) dedicated to each input.I want to read 32 samples from input1 then 32 samples from input2 and restart infintely.I don't find the correct way to configure LPBAM.In first try, I use an LPTIM1 as trigger I do :(sorry my project I can't get image of LPBAM configuration)1) ADC conversion (channel 1) => ADC Conversion (channel 20) and loop on first conf bloc and use LPTIM1 trigger for both    => In this case each buffer contain values from correct input but i run only once2) If I do the same but loop on first data bloc => only last channel ise infinitrly sampled on both bufferCan someone help me to configure it correctly?ThanksHave a good day. Aurélien 

Hi everyoneWe have designed a custom board around the STM32L081CZ and produced 3 prototypes. On the first board I started testing and debugging using STM32CubeIDE on Windows. This worked fine but only with ST-Link, not with J-Link.After testing (and fixing) our hardware, we wanted to program our boards on Debian using Zephyr. I gave a second board (with identical hardware fixes) to my colleague and he was able to program it with a J-Link using West without any problems. My initial board however, that I can still program using ST-Link however does not work using the J-Link (tried West, J-Flash and STM32CubeProgrammer). We since tested the third board and it also works fine with the J-Link.I used ST-Link with STM32CubeProgrammer to connect to all three boards and verified that they are all in the same state (Option Bytes and Registers). I have added a screenshot where I connect first to the device that only connects to ST-Link (Time: 16:33) and then to the one that connects to both (Time

Above is the configuration of my Timer. - To generate pulse, first I used HAL_TIM_OnePulse_Start but with that pulse was not generate.- So I did this: while(1) { HAL_TIM_PWM_Stop(&htim17, TIM_CHANNEL_1); __HAL_TIM_SET_COUNTER(&htim17, 0); HAL_TIM_PWM_Start(&htim17, TIM_CHANNEL_1); HAL_Delay(100); }- Pulse is generated but also getting a glitch pulse before the actual pulse.This is happening due to stopping and immediately starting PWM pulse. The transition is causing this glitch. 

I'm currently learning embedded systems and using  NUCLEO-F411RE to start off.I tried using micro-usb b to c for my macbook and it looks like the micro-usb b would not fit on the board. It says micro usb b on the nucleo form but it looks like it's wrong. Can anyone help me please?

Hi All, Hoping someone can clarify my confusion on the clock input for the TIM1 counter...background:I am testing Tim1 output compare by toggling PA8 on the micro... - the timer settings areperiod = 1600, no clock divisor or prescaler and my clock config is belowOn the scope I see PA8 toggling with a period of 25us which seems kind a strange... So even if I assume a counter clock of 150Mhz (APB1, APB2 peripheral clocks) and the formula of clock/2*(period+1) as the frequency I should see it toggle at 21.34 us? Why this discrepancy?? Thanks! 

Hello, is there any possibility to get the pin configuration table for the STM32U535VE  in CSV or Excel format?Thanks a lot !Ricos

On the STM32F303K8, is it possible to configure e.g. PA8 to both receive an EXTI interrupt on falling edge and act as the TIM1CH1 input to trigger source TI1FP1, in turn serving as a timer gate for gated mode? I cannot find a way to express this through MX, which usually means it isn't possible at all, but perhaps it could be done through explicit HAL calls.