Solved

Posted on June 19, 2018 at 12:26 I am using STM32F103RCT6 to blink a LED which is connected to PA15 - JTDI in PU. My GPIO Configuration is like this GPIOA->CRH |= GPIO_CRH_MODE15; //Output mode, max speed 50 MHz. GPIOA->CRH &= ~GPIO_CRH_CNF15; //General purpose output push-pull\ And I am trying to Blink Like this #define LED_HIGH() (GPIOA->BSRR |= GPIO_BSRR_BR15) //LED High #define LED_LOW() (GPIOA->BSRR |= GPIO_BSRR_BS15) //LED LOW In datasheet it says To free the Pin for GPIO we need to configure SWJ_CFG[2:0] either with 010 or So for that i am configuring AFIO->MAPR |= AFIO_MAPR_SWJ_CFG_1; //((uint32_t)0x02000000) as 010 Datasheet also says we need to do something with ODR/IDR registers but i am not getting correcty how to configure PA15 (or any JTAG pins) as GPIO. The SWJ_CFG in AFIO_MAPR is given as Any suggestion will be helpful. Thank You in advance #blink #stm32 #jtag

Posted on June 19, 2018 at 09:07Hi all,I've started playing around with the NUCLEO-H743ZI to try out the H7 series and I've noticed that toggling GPIO output with BSRR is very slow. I've used CUBE to configure the board for a 400MHz SYSCLK and my main loop just continuously toggles PE0 with BSRR as below:while (1) {    TOGGLE_GPIO_Port->BSRRH = TOGGLE_Pin;    TOGGLE_GPIO_Port->BSRRL = TOGGLE_Pin;    TOGGLE_GPIO_Port->BSRRH = TOGGLE_Pin;    TOGGLE_GPIO_Port->BSRRL = TOGGLE_Pin;}Resulting scope trace attached - the output toggles at 17MHz (blue), which seems extremely slow. For comparison MCO2 set to SYSCLK/10 (yellow) is 40MHz, and TIM1 set to PWM (purple) can output 100MHz. I've checked my GPIO speeds (GPIO_SPEED_FREQ_VERY_HIGH) and my peripheral clocks.Has anyone else observed slow GPIO on the H7? Is there a setting I've missed? Or is there a spec I've missed?For comparison, the same test on my NUC

Posted on June 18, 2018 at 10:20hello ST community,I have a little problem with STM32CubeMX.The problem is, when i generate new code with cubeMX to my existing programm, some of my existing work is not working as intended anymore (here it is my I2C that only returns 255 all the time after the modification). But if i make the modification without CubeMX (copy and past the exact same code) i don't have any problem. I even checked, all the files are the same.Does someone have an idea why this is happening and how to solve this issue ?Thanks for your time.#stmcubemx #st-cube

Posted on June 07, 2018 at 01:45I have a large data buffer stored in external sdram. I'd like to send data to a serial peripheral (uart, spi or iis) directly on a dma transfer. Is it possible to do so?. Every FMC sdram example available move data from sdram to internal ram.Thanks in advance.Tony 

Posted on June 15, 2018 at 17:25I have a M24LR-DISCOVERY development board and installed STSW-95HF001 Ver 2.2.0After installation on Win 7 Pro and running the status bar says 'CR95HF demonstration board not connected, please check it'I have checked that the USB device does not have a driver associated with it, as per device manager etc.en.DM00238010.pdf says 'Driver included through a specific Dll' but this knowledge really doesn't help.What am I missing?#m24lr-discovery

Posted on June 16, 2018 at 22:25Hi friends,The while loop does not work in the following function. Why could it be?For STM32F407VG;void US_BEKLE(uint16_t us){ uint16_t baslangic = (uint16_t)__HAL_TIM_GET_COUNTER(&htim1);while(((uint16_t)__HAL_TIM_GET_COUNTER(&htim1)) - baslangic < us);}htim1.Instance = TIM1; htim1.Init.Prescaler = 167; htim1.Init.CounterMode = TIM_COUNTERMODE_UP; htim1.Init.Period = 65000; htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim1.Init.RepetitionCounter = 0;#microsecond-timer #while-loop

Posted on June 16, 2018 at 16:35 I've been trying to connect USART_1 with bluetooth hc-05 for the past few days, andI am unable to do so. The Microcontroller I am using is nucleo STM32F103RB. Here's the code (I am not using any library) #define APB2_FREQ 72000000 void USART1_Send(char* data) { unsigned int length = 0; while(data[length] != '\0') ++length; int i = 0; while(i < length) { USART1_DR = data[i]; while((USART1_SR & 0x00000080) == 0); // wait if transmit data register is not empty ++i; } } char USART1_Receive() { while((USART1_SR & 0x00000020) == 0); //wait for data to arrive return USART1_DR; } void USART1_Init(int baudrate, short parity, short stop) { RCC_APB2ENR |= 0x00004004; // enable Port A, enable usart1 clock GPIOA_CRH &= 0xFFFFF00F; GPIOA_CRH |= 0x000004A0; // pin 9 = alternate function push-pull, pin 10 = Floating Input USART1_CR1 &= 0x00000000; // clear CR1 register and 'M bit' to 0(which is 8 bit data) if(parity == 1) // even parity

Posted on June 12, 2018 at 06:37Hi Everyone,       I m interested in doing lower level programming. Now i currently working with stm32f407 board. I have successfully got the output for GPIO. Now i am started working on ADC interface. But i couldnt get the output for my code. I haD given 3V to PA1 pin but still i couldnt get the proportional value in DR register. Kindly help me out to solve this issue.&sharpinclude 'stm32f4xx.h'void GPIO_Init(void);void adc_init(void);uint16_t adc_read();uint16_t adc_value1=0,adc_value2=0;int main(void){ GPIO_Init(); adc_init();while (1) { adc_value2=adc_read(); if(adc_value2>=0X000C) { GPIOD->ODR|=(1<<14); } else { GPIOD->ODR|=(1<<15); } // // GPIOD->ODR&=~(1<<14);// for(delay=0;delay<=4166666;delay++);// GPIOD->ODR|=(1<<15);// for(delay=0;delay<=4166666;delay++);// // GPIOD->ODR&=~(1<<15);// for(delay=0;delay<=4166666;delay++);}}void GPIO_Init(void){RCC->AHB

Posted on May 29, 2018 at 13:55Hi All,I am working on STM32F413 Disco kit and trying to read/write into SD card using DMA mode.My requirement is -   i have to call single function which will read/write into SD card in 1ms timer callback function.It is working fine in debug mode but not in normal mode.Is there any delay issue ? Because when we run in debug mode, automatically delay is getting added.Our project requirement is very rigid that we should not use HAL_Delay().Please provide your suggestions.My code:-/********************************************/void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim){    // TIM1 is configured for 1ms        if(htim->Instance == TIM1)    {        SDtest();          }}/********************************************/void SDtest(void){      LastWriteAddr = SD_WriteBlocks_DMA(Tx,TEMP_R

Posted on June 14, 2018 at 18:20Hi everyone,I am currently using USB Full-Speed for an application and I would like to know if there is a way to implement DMA to access USB FS FIFO.I know that a dedicated DMA exists for USB High Speed but I can not find something similar for Full Speed. Moreover, the documentation and ressources about the FS FIFO remain a bit confusing and could suggest it may be possible to access buffers via DMA but I still didn't manage to do this.I would need some peace of advice on how I could achieve and implement a such architecture.Thank you in advance.#stm32-usb-dma #usb-fs

Posted on June 14, 2018 at 19:23Stm32F103 HAL_CAN_Transmit(&hcan,10) not working, always return HAL_TIMEOUT and HAL_ERROR, but when i use STD_Lib everything is good. So i think if the HAL has BUG of CAN on STM32F1?Hello,I'm trying to set up CAN on my STM32F103  to send a CAN message but I keep getting HAL_TIMEOUT error from the HAL_CAN_Transmit() function :/* Check End of transmission flag */ while(!(__HAL_CAN_TRANSMIT_STATUS(hcan, transmitmailbox))) { /* Check for the Timeout */    if(Timeout != HAL_MAX_DELAY)    {       if((Timeout == 0U) || ((HAL_GetTick()-tickstart) > Timeout))                           ///////here!!!!!!!!!!!!!       {          hcan->State = HAL_CAN_STATE_TIMEOUT;   &nb

Posted on August 10, 2016 at 09:39I am used to chips being marked for example ''STM32F405VGT6''. However, from several people I hear that now chips marked with an additional ''U'' at the end are showing up. Date code 1613 or something like that. One person reported problems with that chip. To be honest: I personally don't think it's the chip, but I would like to know what that U stands for (the datasheet clearly states that this U does not exist....)

Posted on June 14, 2018 at 08:37Hello,Could you describe difference in use FIFO0 and FIFO1 for CAN1 and CAN2 in stm32f4 mcu? For example if I configure CAN2 for receive in FIFO0 and configurate filters 14 all work success, but if I try use FIFO1 with CAN2 no interrupt CAN2 happen in receive in this case. CAN0 need use with FIFO0 and CAN2 need use with FIFO1 if big data transfer happen, isn't it(or what case when need use separately FIFO for CAN1 and CAN2)?

Posted on June 15, 2018 at 05:37Working on an STM32F103, using PWM to generate waveforms. The timer is in One Pulse mode and uses the Repetition Count Register to clock out the required signals. Based on user selection, I am stopping and starting the output using HAL_TIM_PWM_Stop_IT()/HAL_TIM_PWM_Start_IT(). There are multiple timers in a master-slave configuration, and interrupts are being used to interface with a DAC, so there are many things that must remain in sync.As expected, stopping and re-starting the timer does not affect the timer state, notably the counter CNT. That's fine as I can simply zero this register before restarting, to ensure the output is in sync. The problem is that the timer is stopped at some arbitrary point in time at which the repetition counter is at some arbitrary value, and when the output is restarted, the repetition counter appears to resume from this arbitrary value, thus introducing a short delay or phase shift in the output, prop

Posted on June 14, 2018 at 22:58Having a problem with ST-Link v2-1 programming the STM32CubeExpansion_LRWAN boards.Have updated the firmware and using the latest driver for WIndows 10.Programming requires constant driver restarting. Debugging from the IAR or Keil is nearly impossible.On the several PCs the app ST-Link Utility can't connect to the board due to a USB failure.Drag-and-drop feature works 1 time out of 100 with fail message: 'The application file format is unknown and cannot be parsed and/or processed'Thanks for help.#b-l072z-lrwan1 #stm32l0-discovery-kit-lora

Posted on June 14, 2018 at 01:13I have configured an timer IC channel and it is working ok however the timer counter isn't reset when I read the captured value: void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim){if (htim == &htim2)    {       input_capture = HAL_TIM_ReadCapturedValue(&htim2, TIM_CHANNEL_1);    }}There is any register that I need to configure so the timer reset the counter each time it capture a value?Per example I have a channel capturing a 10Hz signal however I'm only writing to serial port at 1Hz and I only want to write the last captured value. Without reset the counter the output I got is '1000, 2000, 3000, 4000,...' instead of always be 100 (I have the timer configured to 1ms resolution).#stm32f0-hal #input-capture-mode

Posted on May 18, 2016 at 20:54The forum has been a mess the last few days. Only ''sign-on to forum'' seems to work, entering username/password on message replies just results in all sorts of error screens/pages. TCP connect or somesuch. #worst-forum-software-ever #worst-forum-software-ever

Posted on June 05, 2018 at 17:21I would suggest opening the file attached in notepad++.Generally speaking the code makes sense. I can get it working without the CRC, which apparently is supposed to equal 0.Note the following section:if(psFirmware->ulPage == (psFirmware->ulTotalPages - 1)){ sFirmware.ucRcvdImage = TRUE; //verify FW if(sFirmware.ucUpdateWhat == fwUPDATE_CONSOLE){ ulCRC_Calc = sFirmware.ulFirstWord; sFirmware.ulAddress = UPDATE_IMAGE_ADDRESS+4; size = ((psFirmware->ulTotalPages * 12) /4)-1; }else{ ulCRC_Calc = 0; sFirmware.ulAddress = UPDATE_RADIO_ADDRESS; size = ((psFirmware->ulTotalPages * 12) /4); } for(i = 0x000 ; i < size ; i++){ ulMemoryRead = *(__IO uint32_t*)sFirmware.ulAddress; sFirmware.ulAddress += 4; ulCRC_Calc += ulMemoryRead; //ADD the bits to calculate the checksum } if(1){//ulCRC_Calc == 0){ //verify FW image here if(sFirmware.ucUpdateWhat == fwUPDATE_CONSOLE){ FlashStatus = FLASH_ProgramWord(UPDATE_IMAGE_ADDRESS,sFirmware.ulFirstWord); if

Posted on June 12, 2018 at 10:34Hi all,I try to create a software interrupt in STM32L476.This is the software interrupt enable codeHAL_NVIC_SetPriority(EXTI1_IRQn, 3, 0); HAL_NVIC_EnableIRQ(EXTI1_IRQn); LL_EXTI_EnableIT_0_31(LL_EXTI_LINE_1); LL_EXTI_EnableEvent_0_31(LL_EXTI_LINE_1);This is the interrupt trigger code  LL_EXTI_GenerateSWI_0_31(LL_EXTI_LINE_1);The interrupt is not generated, how come? what am I missing?The datasheet says the following:14.3.6 Software interrupt/event selectionAny of the configurable lines can be configured as a software interrupt/event line. Theprocedure to generate a software interrupt is as follows:1. Configure the corresponding mask bit (EXTI_IMR, EXTI_EMR).2. Set the required bit of the software interrupt register (EXTI_SWIER).This is exactly what I'm doing. 'normal' interrupts work.#software-interrupt #stm32l4

Posted on March 20, 2018 at 10:38I found in a PDF document called ''STM32 Embedded Software'' following table where just ''2018'' is stated.Could ST give us please a more exact release date of the STM32H7 LL API (2018 Q2/Q3/Q4)?Thank you in advance.#stm32h7 #ll #h7 #ll-api #lowlayer

Posted on June 13, 2018 at 01:31Hello, I went to STM32 IoT discovery Kit seminar last year at San Francisco. At that time, I received a demo board (STM32 IoT Discovery Kit) with a USB memory card. Recently we have a project may need this MCU, and I am trying to bring up this board, but find out my computer cannot read USB memory card anymore. Do you know where can I download the those files, like software and sample code ? I look over ST website and cannot find it. Thank you for your help

Posted on June 11, 2018 at 14:40I have a weird problem with LSM6DS3. Right after power on I try to read the Who Am I register, via SPI. The return value is 0xFF, if I read it again it will send the correct value 0x69.In other words, in order to get the correct response for Who Am I, I must read the register twice, why is that?#lsm6ds3

Posted on June 11, 2018 at 09:56Dear All, I’m new to this forum and to stm32 board. I’m trying to connect an SD Card to my board NUCLEO-F429ZI but I’m having some problems with it. I use STM32CUBEMX to create the project using the standard peripherals settings. I put SDIO in SD 4 bit interfacing mode. I do not change anything in clock configuration. I connect the SD Card directly to SDIO PIN without any resistors as in picture http://www.openstm32.org/dl422?display Board PIN    SD Pin PD2             2 (CMD) PC8             7 (Dat0) PC9             8 (Dat1) PC10            9 (Dat2) PC11            1 (Dat3) PC12             5 (CLK)

Posted on June 11, 2018 at 08:37HiHow to change arduino uno code to STM32F103void setup(){ pinMode(9,OUTPUT); pinMode(10,OUTPUT); TCCR1B = (1<<WGM13)|(1<<CS10);  TCCR1A = (1<<COM1A1)|(1<<COM1B1)|(1<<COM1B0);  TIMSK1 = 1<<TOIE1; ICR1=511;  OCR1B=0; }   ISR (TIMER1_OVF_vect) { static uint8_t  n=0; OCR1A =  OCR1B= sine_wave[n]; n++; }  void loop(){ }

Posted on June 07, 2018 at 20:40 I modified \STM32Cube\Repository\STM32Cube_FW_F7_V1.0\Projects\STM32746G-Discovery\Applications\LibJPEG example to show several images, see the code below, but images don't show. Only the first one is there whole. It looks like they may be kind on stacked top of each other. /* Includes ------------------------------------------------------------------*/ #include 'main.h' /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ FATFS SDFatFs; /* File system object for SD card logical drive */ FIL MyFile; /* File object */ char SDPath[4]; /* SD card logical drive path */ RGB_typedef *RGB_matrix; uint8_t _aucLine[2048]; uint32_t offset = 0; uint32_t line_counter = 239; /* Private functio