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I am using a STM32LO73RZ board. I have set up UART with interrupts and this works. I receive data that I send from an USB to TTL converter. When I sent a character one by one, this works fine. However, when I try to send a larger message, I keep missing a few characters. It starts after the first 4 bytes that are received. Does anybody know how to fix this?

Now we have a problem, our stm32 device board is delayed.Now we only can develop our UI on touch designer simulator. But we want to test our software of communication layer, using the serial port or TCP/IP port in one computer with the same port in another computer.How can I do? I read the API Document in the installed path of touch designer, but find nothing ,only HAL? But it seems to have nothing to do with communication. Or I have to add c++ lib ?

STM32H745 DS indicates there are these signals:CANFD1_TXFD_MODECANFD1_RXFD_MODECANFD2_TXFD_MODECANFD2_RXFD_MODENo mention is made in the DS for their purpose, nor in AN5348 "FDCAN peripheral on STM32 devices". The signals are not mentioned at all in the RM.So what are those signals for? How do you use them?

Hi For a school project we are working with the ST25R3916 to read/write MIFARE CLASSIC cards, but I'm stuck on the reading part. I found this in de datasheet: "Low level modes to implementMIFARE Classic® compliant or other custom protocols", What mode should I use? I've read something about Transparent mode and stream mode, do I use one of these 2?Thanks in advanceKind regards

I want to install Midnight Commander (MC) with following command:root@stm32mp1:/root# apt-get updateReading package lists ... Doneroot@stm32mp1:/root# apt-get install mcReading package lists ... DoneE: Unable to locate package mcUnsuccessfully, need your help

In the file stm32l4_hal_sd.c in functions:HAL_SD_WriteBlocksHAL_SD_ReadBlocksNo check is performed on tempbuff's bounds: its value must not exceeds pData base address + pData size but tempbuff gets incremented indefinitely until a hardfault is triggered by dereferencing reserved address space.Fix: enclose the block where tempbuff is incremented with the following condition:if( (tempbuff - pData) < (NumberOfBlocks * BLOCKSIZE))

I have the following code, which is *almost* always working. (It typically gets stuck after 10-100K characters.)void USART3_IRQHandler(void) { if (LL_USART_IsActiveFlag_TXE(USART3)) { stats.txe++; if (LL_USART_IsEnabledIT_TXE(USART3)) { LL_USART_EnableIT_TC(USART3); LL_USART_DisableIT_TXE(USART3); } } if (LL_USART_IsActiveFlag_TC(USART3)) { stats.tc++; if (txbusy) { txbusy = 0; } else { Error_Handler(); } LL_USART_DisableIT_TC(USART3); } }The intent is that txbusy should be set false once the serial port is ready to accept another outgoing character. (The type of txbusy is a global "volatile _Bool".)The code above works for 10-100K characters, but then an interrupt is missed, txbusy is left as 1 and the rest of the program stalls.What is the reliable way of sending single characters, and being able to test (without blocking) whether another character can be sent without corrupting the last character? (I want to poll to see if another character can be saf

Hi,Is it possible to use the ADC to monitor the battery supply voltage down to 1.8V just before the micro stops working. Due to the reference (2.048) I can only correctly read down to 2.4VThanks am

I designed a pcb adapter for this board in order to use it with my V2 based project, I’ll received soon this pcb from JLCPCB but I find no way to buy a board :ST website distributor stock informations are wrong, Digikey as 0 in stockFarnell has’nt got the product registeredCould ST sell me one via its shop or where can I find one ?, as a person not a corporate.thanks

Hello,Looking to integrate the ST25 in an ultra space constrained environment. As such antenna space is very limited so it seems like the best solution would be a wire wound inductor as read distance is not supercritical. The Pulse W3102 4.7uH inductor seems to be designed to be a NFC antenna. What are somethings I should keep in mind when integrating this as the ST25DV antenna? Will any additional tuning components be need? Would any wirewound 4.7uH inductor work? 4.7uH seems to be a fairly common value for NFC wirewound antennas, why is that?Additionally due to some of the safety requirements for this device there may be a design constraint to keep this inductor at 1uH or below. Preliminary research seems to indicate that a 1uH NFC should still be fine (?) . Could integrating a 1uH inductor work? What tuning components will be needed (at least to try as a first pass) ? Thanks.

This is the code: /* USER CODE BEGIN WHILE */ while (1) { HAL_GPIO_WritePin(GPIOA , LED_Pin, GPIO_PIN_SET); HAL_Delay(10); HAL_GPIO_WritePin(GPIOA , LED_Pin, GPIO_PIN_RESET); HAL_Delay(10); char p[] = "128"; HAL_UART_Transmit(&huart2, (uint8_t*)p , sizeof(p), HAL_MAX_DELAY); HAL_Delay(200); }This is the UART config:/* USER CODE END USART2_Init 1 */ huart2.Instance = USART2; huart2.Init.BaudRate = 9600; huart2.Init.WordLength = UART_WORDLENGTH_8B; huart2.Init.StopBits = UART_STOPBITS_1; huart2.Init.Parity = UART_PARITY_NONE; huart2.Init.Mode = UART_MODE_TX_RX; huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart2.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart2) != HAL_OK) {  Error_Handler(); }The attachment show the clock configuration:

Posted on March 30, 2018 at 07:29This is occurring in fsdata_custom.c in the LwIP_HTTP_Server_Netconn_RTOS project I imported from CubeMX.  The struct that is being referenced is :struct fsdata_file {  const struct fsdata_file *next;  const unsigned char *name;  const unsigned char *data;  int len;  u8_t flags;#if HTTPD_PRECALCULATED_CHECKSUM  u16_t chksum_count;  const struct fsdata_chksum *chksum;#endif /* HTTPD_PRECALCULATED_CHECKSUM */};and the HTTPD_PRECALCULATED_CHECKSUM is defined as 0.Where the error is occurring in fsdata_custom.c is at: (line 2336const struct fsdata_file file__STM32F7xx_files_logo_jpg[] = { {file_NULL,data__STM32F7xx_files_logo_jpg,data__STM32F7xx_files_logo_jpg + 28,sizeof(data__STM32F7xx_files_logo_jpg) - 28,1,}};According to the struct definition it looks like all the elements are there so I am confused.Anyone run across this?

Hi,Sometimes in my program, I use a timer in PWM mode, and sometimes it is off. How can I check the timer status, on or off? Thanks.

The BlueNRG-2 has multiple communication protocols available (UART, SPI, I2C). I am planning to use it in a custom PCB and would like to configure it for SPI, which I can only find mentioned in Section 3.8.2.2 "Procedure for enabling SPI" in the BlueNRG-2 Datasheet. How are you supposed to interact with it at this level (to program IO_MODE to route SPI port signals on those GPIOs)? What would the hardware setup look like? For this method, do you use the UART bootloader to program the on-board memory?I may be wrong, but from what I have read, there are only two ways of configuring it. One way is to use UART and open a COM port, and the other way is by using an ST Link/V2 programmer and connecting it to the SWD pins. Then by using the BlueNRG-2 Flashing Utility to load the DTM_SPI.hex file onto the chip. Is this accurate? I was wondering if anyone could explain any other options for configuring this chip for use with SPI, or provide any helpful information or resources pertaining to

Hello,(Hobbyist there) A few years ago I tried to develop on STM32 microcontrollers (the so called 'blue pill' to be exact) but the toolchain installation and the whole code generating process made me give up (also there wasn't full linux support if I'm not wrong, up to this day I still can't find official linux drivers for the ST-link). Fortunaly ST released the STM32CubeIDE which encompasses everything, making things a lot more easier for beginners.But after a few days of testing with the software and consulting documentations, I have a few questions and things I fail to achieve:1) When creating an STM32Project, I can choose between C and C++, but I don't see the difference between the two. At the end I just have a bunch of .h/c files and no .cpp files whatsoever (and especially no main.cpp). What does this mean ? Do I have to manually create .cpp and .h files in the Src and Inc folders, and must I copy the content of main.c in my own main.cpp ? How to tell the software to compile us

I compiled example from st cube. I found in clock configuration this parameters:RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV6; RCC_OscInitStruct.PLL.PLLN = 85;This give to sysclk 177Mhz and it exceeds max frequency... when I set parameters to:RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV5; RCC_OscInitStruct.PLL.PLLN = 68;cubemx and calculation inside example show me 170Mhz, but then Hrtim stop generate 100kHz signal (its around 96kHz and it's unstable...). Period is calculated as:/* Formula below works for PWM frequency > 83kHz (with prescaler ratio = 1) */#define TIMA_PERIOD ((uint16_t)(((uint64_t)HRTIM_INPUT_CLOCK * 32) / TIMA_PWM_FREQ))where TIMA_PWM_FREQ = 100000HRTIM_INPUT_CLOCK = 170000000Another thing to errata?

Hello,For a project, I am using the code given on the STLRWAN1 web page (https://www.st.com/en/evaluation-tools/i-nucleo-lrwan1.html#tools-software), and the project "End Node". I am using the L476 uC and the SX1272. How can I configure the code in order to make the antenna works on PA BOOST ? The original code makes the antenna works on RFO.Thanks.

X_NUCLEO_NFC05A1 please send me how to kernel driver file and device tree configuration and make menu configuration on this device if any supported links are there means please share us it is very helpful and also what are the changes i want to do for kconfig and makefile and how to enable spi . please tell me as much as early we are hopefully we are waiting for your replaythank you Regards,Raghavendra bhovi

Our app is based on a cross platform framework that uses phone-gap. we understand you provide some st nfc libraries that does this, but we would like to know the actual android/ios api used for this. please help.

New board STM32MP157A-DK1 bought, trying to connect. First, ST-LINK drivers were updated, then on-board ST-LINK version was updated to last available V2J26M36. MDK cannot connect ("No target connected"), st-link utility cannot see board ("Detection fail"). Through some experiments, by the moment, assume this:- Oscilloscope shows signals on SWDIO, SWCLK, NRST.- Tried all available firmware versions (V32...V36) from the site.- Wires were soldered to TP3, TP5, etc. to got connection to external ST-link. Initially, external ST-LINK/V2 had version M28 and MDK has read ident from the device! But MDK cannot flashing board ("invalid ROM table"), and firmware in external ST-LINK were updated. Since this, it came to the situation "No target connected" which was with the on-board st-Link. Another firmware versions were tried with the same result.ST-LINK/V2 and ST-LINK/V2 Isol were tried.In MDK dialog, internal st-link version shows as V2x36x26, but there NO such format in RN0093 doc. Only J36M26

I have two hardware boards mount with STM32H750 . I want to set the GPIO G11 to high , the code as below :  __HAL_RCC_GPIOG_CLK_ENABLE();   HAL_GPIO_WritePin(GPIOG, GPIO_PIN_11, GPIO_PIN_SET);    GPIO_InitStruct.Pin    = GPIO_PIN_11;   GPIO_InitStruct.Mode   = GPIO_MODE_OUTPUT_PP;   GPIO_InitStruct.Pull   = GPIO_PULLUP;   GPIO_InitStruct.Speed   = GPIO_SPEED_FREQ_LOW;  HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);One board work but another don't . The corresponding bit on the "GPIO input data register" on failure board will not set after i run the above codes. Any idea ?Thanks

Hi everyone, I'm trying to capture a PWM signal's duty cycle and period using a timer (TIM3 in this case) in PWM input mode. However, when I run the following code, I see no updates in the CCR1 and CCR2 registers, which should have the values of my duty cycle and frequency respectively. Any help would be appreciated!/** register manipulation with the PWM Input References: manual RM0091 (the STM32 F0 manual), STM32F042x4 STM32F042x6 Datasheet, and UM1956 (the nucleo board) **/   #include <stm32f042x6.h> #include <timerdrv.h>       void TIM3_PWM_InputInit();   int main(){   TIM1_PWM_Init(); TIM3_PWM_InputInit();   while(1){   } }   void TIM3_PWM_InputInit(){ // setting up GPIO for PWM input mode RCC->AHBENR |= RCC_AHBENR_GPIOBEN   // set pin PB4 in alternate function mode GPIOB->MODER |= GPIO_MODER_MODER4_1;   // set pin PB4 to AF1 for TIM1 CH1 GPIOB->AFR[0] |= (0x1UL << GPIO_AFRL_AFRL4_Pos); &nbs

Hi, I want to receive 32 bit data from a SPI master but in the cubemx options there are only two options available, 8 bits and 16 bits, so what if I want to receive 32 bits frames, what should I do?Thanks

I want to flash my Nucleo Board from STM32CubeIDE. When I click debug in the IDE it fails with:ST-Link enumeration failed   Error in initializing ST-LINK device. Reason: ST-LINK DLL error.st-info --probe saysFound 0 stlink programmersWhen I enumerate the USB devices connected to my computer I don't see the board.I have the board connected via the USB port on the ST-LINK part of the board. The board powers up fine and runs the pre-loaded blink code. The ST-LINK LED is flashing red.I have tried 2 Nucleo boards (F4339ZI and F303K8). I have tried 4 USB cables. I have tried with and without a USB hub and multiple ports. I have tried with 2 computers and 2 OSs (OS X and Linux).Am I right in thinking the ST-LINK should show up as a USB device without me needing to do anything else? Presumably nothing else will work till I can solve this problem.This is my first use of these boards so user error is highly likely. Any docs I could find seemed to gloss over this step.

Even though I configure the RCC to use an external high speed crystal as a clock source (HSE), the HSI remains selected even after the SystemClock_Config routine is executed!! (I have checked the HSE pins and it appears that the clock driver (PH0/PH1) is not turned on.)The SystemClock_Config code generated is:void SystemClock_Config(void){  RCC_OscInitTypeDef RCC_OscInitStruct = {0};  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};  RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};  /** Configure LSE Drive Capability   */  HAL_PWR_EnableBkUpAccess();  /** Configure the main internal regulator output voltage   */  __HAL_RCC_PWR_CLK_ENABLE();  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);  /** Initializes the CPU, AHB and APB busses clocks   */  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;  RCC_OscInitStruct.HSEState = RCC_HSE_ON;  RCC_OscInitStruct.PLL.PLLState = RCC_PL