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Posted on July 18, 2017 at 20:05Hello. I need to use PB4 as a normal GPIO digital output pin. I�m using the HAL for developing the firmware. The code I use for configuring GPIO is:__HAL_AFIO_REMAP_SWJ_NONJTRST();__HAL_RCC_GPIOB_CLK_ENABLE();GPIO_InitTypeDef config_gpio = {0};config_gpio.Pin = GPIO_PIN_4;config_gpio.Mode = GPIO_MODE_OUTPUT_PP;config_gpio.Pull = GPIO_NOPULL;config_gpio.Speed = GPIO_SPEED_FREQ_HIGH;HAL_GPIO_Init(GPIOB, &config_gpio);HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4, GPIO_PIN_RESET);After that, PB4 is always pulled high and I can't set it low, probably because it keeps behaving as NJTRST, so I can�t use it as a normal output.It seems that the macro __HAL_AFIO_REMAP_SWJ_NONJTRST() doesn�t do anything.I would appreciate any advice.Thanks.#stm32f103 #afio #njtrst #jntrst #pb4 #remap #swj #stm32 #stm32f1

Posted on July 19, 2017 at 01:26Hi,I am just getting started evaluating the STM32F0 Discovery board with the Keil MDK-ARM Toolchain. Following all the quick start guides and the STM32CubeF0GettingStarted to run the examples leads to the following error:'error: ..\..\..\..\..\..\Drivers\CMSIS\Device\ST\STM32F0xx\Include\stm32f091xc.h(131): error:  #5: cannot open source input file 'core_cm0.h': No such file or directory'Any advice? thanks.

Posted on July 17, 2017 at 08:22hello, I have gone through the datasheet and app note of LIS3MDL. But i am not able to get how block data update bit work i.e. if someone has set the BDU bit and if I read registers through I2C one by one, then how the ic internally gets idea that all the registers have been read and got the data of same sample?Also can anyone please elaborate about ODR and its working in LIS3MDL

Posted on June 09, 2017 at 22:53I'm trying to set-up a STM32F091 with a battery connected straight into the VBAT pin. For the first couple times I turned on this vbat at 3v, It worked ok(no weird behavior). However, after trying to program the MCU via SWD, this VBat pin became a low impedance path to ground(around 150 Ohms) sinking 20mA. At first I thought this low impedance path was in my board, but then I removed the mcu and measured the resistance on the chip between pins VBAT and Ground, getting 159 ohms as a result. This problem manifested itself in two different chips and similar resistances were measured.(150 and 250 ohms)I'm inclined to believe this is a problem, since the VBat domain is supposed to power the RTC and back-up register, definitely not sinking 20mA @ 3v. I have not found any information on the device errata sheet and the data sheet says this pin draws uA's when powering the RTC domain.The circuit is a straight connection between the battery and this pin. All othe

Posted on July 13, 2017 at 23:05I need to adjust the Advertising Intervals (min/max) associated with the ''Bluehci_Gap_Set_Limited_Discoverable'' command which is described on pages 30-31 of the UM1755 BlueNRG Bluetooth LE stack ACI User Manual (linked on the BlueNRG product page).This command has the parameters:      where I need to understand the details of Adv_Interval_Min and Adv_Interval_Max.However no details are provided.   The User Manual says this about these parameters:      and in the detailed listing of the command parameters,  these two parameters are entirely missing!Can you please provide details for these two parameters:  Adv_Interval_Min and Adv_Interval_Max How many bytes each?If > 1 bytes are they big or little-endian?What are the time units?   In other words,  if I specify a value of 1 (decimal),  what will the corresponding advertising interval be?If this informa

Posted on July 17, 2017 at 16:17Hi,I'm developing a bridge USB-SPI with a STM32L052 microcontroller. In this starting moment I'm developing the same application using the evaluation board STM32L073RZ. I'm using SW4STM32 IDE and STM32CubeL0 software. I'm looking for an example based on USB usage, but I haven't found yet.Is there the USB driver for STM32L073RZ in the STM32CubeL0?Are there any examples based on the USB?Thanks in advance,Marco Ferdinandi

Posted on July 18, 2017 at 05:08Hello, I'm new with STM32 and this is the first time for using I2C on STM32.My environment is Keil5+cubeMX4.22.I can make the config by cube and I wrote following code, but couldn't compile it.uint8_t c[5] ={'a', 'b', 'c', 'd', 'e'};HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000); Build Output said 'too few arguments' but I think the function has just four arguments, that as I wrote.All error output is like this,*** Using Compiler 'V5.06 update 5 (build 528)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin'Build target 'moxom_a1'compiling main.c...../Src/main.c(102): error: #165: too few arguments in function call HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000); ../Src/main.c(102): error: #18: expected a ')' HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)0b00111110<<1, (uint8_t*)c, 1, 1000); ../Src/main.c(100): warning: #177-D: variable 'c' was declared but never referenced uint8_

Posted on July 17, 2017 at 15:43Can you provide a circuit diagram for inductor type antenna that is compatible with M24SR?

Posted on July 14, 2017 at 11:52Dear Sir/Madam,I am working on STM32F405 mcu.I developed my code on cubemx and HAL drivers.I want to interface microchip adc 'MCP3428' via HAL I2C drivers but unfortunately i was failed.Anybody of you please help me to resolved this issue.Thank you.

Posted on July 15, 2017 at 21:58can't find one word on their site about temperatures for soldering.

Posted on July 14, 2017 at 15:41Hello,in my STM32F765 project I am using a timer (TIM6) which is set to a constant frequency. The update event of the timer triggers an ADC (ADC2&3) which is configured to start conversion of a regular group of channels on the TRGO of the timer.DMA2Stream2_IrqHandler clears the TC&HT flags of both DMA2-Streams (2&0) but is called only once and then never again.I have done any number of combinations for different ADC/DMA settings but it behaves always the same. I suspect the DMA controller but I did not got it working right. Can somebody give me a hint, please?Thank you in  advance,GahlenHere is my code for configuring the hardware:void Timer6::Init(void) {    hardware.rcc.EnableClock(APB1, RCC_APB1ENR_TIM6EN);        hardware.timer.SetPrescaler   (TIM6, prescaler-1);        hardware.timer.SetPeriod      (TIM6, period-1

Posted on July 15, 2017 at 16:09Hello.I am using STM32F746BG. I use FreeRTOS and USB CDC class code.when I create an IAR Project using STM32CubeMX, USB com port correctly identify by windows but can not open.but if i change code like cod below, it works correctlyint main(void){  HAL_Init();  SystemClock_Config();  MX_GPIO_Init();  /* USER CODE BEGIN 2 */  MX_USB_DEVICE_Init();  while(1);  /* USER CODE END 2 */  MX_FREERTOS_Init();  /* Start scheduler */  osKernelStart();what is wrong??

Posted on May 19, 2017 at 14:34As in title, when trying to save a new project the Cube crashes generating a Java error log file.Seems to happen just before opening a file dialogue window to ask where to save the new project.#cube-mx #stm32cubemx-java #java-crash

Posted on July 12, 2017 at 18:03STM32F7 HAL_Uart_receive_IT trying to receive and process one byte at a time, and like many others in the forum, I get one byte ok, then the HAL Receive Callback routine will not run again. Here are the basic code pieces that I am using now..FROM MAIN.H----------------------------------------------------------/* Definition for USARTx clock resources */&sharpdefine USARTx USART3&sharpdefine USARTx_CLK_ENABLE() __HAL_RCC_USART3_CLK_ENABLE();&sharpdefine USARTx_RX_GPIO_CLK_ENABLE() __HAL_RCC_GPIOD_CLK_ENABLE()&sharpdefine USARTx_TX_GPIO_CLK_ENABLE() __HAL_RCC_GPIOD_CLK_ENABLE()&sharpdefine USARTx_FORCE_RESET() __HAL_RCC_USART3_FORCE_RESET()&sharpdefine USARTx_RELEASE_RESET() __HAL_RCC_USART3_RELEASE_RESET()/* Definition for USARTx Pins */&sharpdefine USARTx_TX_PIN GPIO_PIN_8&sharpdefine USARTx_TX_GPIO_PORT GPIOD&sharpdefine USARTx_TX_AF GPIO_AF7_USART3&sharpdefine USARTx_RX_PIN GPIO_PIN_9&sharpdefine USARTx_RX_GP

Posted on July 14, 2017 at 07:58I just bought STM32 MCU Discovery Kits and want to set PE3, PE4, PE5, PE8 as GPIO output.I made the codes via STM32CubeMX and downloaded it to the board successfully.But I found PE4 adn PE5 configure fail, while PE3 and PE8 work well.Hope anyone can help me, thanks in advance.The codes is shown below:int main(void){ HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); while (1) { HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_8); HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_3); HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_4); HAL_GPIO_TogglePin(GPIOE, GPIO_PIN_5); HAL_Delay(1000); }}void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.HSICalibrationValue = 16; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { Error_Handler(); } RCC_ClkInitStruct.ClockType = RCC_CLO

Posted on July 12, 2017 at 10:30 Hello, I am workin on SPC560P Discovery Board. I am trying to initialize the ADCperipheral using the components provided in the SPC5 Studio. What I am trying to do is to replicate the ADC Test Application in a different project. I initialize the ADC component in the project configuration andusing this in the main.c #include 'components.h' #include 'adc_lld_cfg.h' static adcsample_t samples[ADC1_GROUP_ADC1_CONF_NUM_CHANNELS * ADC1_GROUP_ADC1_CONF_BUF_DEPTH]; static uint32_t mswaittime; int main(void) { componentsInit(); irqIsrEnable(); adc_lld_start(&ADCD2, NULL); sysWaitMilliseconds(1000UL); while(1) { adc_lld_start_conversion(&ADCD2, &adc1_group_ADC1_conf, samples, ADC1_GROUP_ADC1_CONF_BUF_DEPTH); mswaittime = samples[0]; sysWaitMilliseconds(100UL+mswaittime);�?�?�?�?�?�? } }�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�? Configuring the ADC I am using the same values provided in the

Posted on July 13, 2017 at 18:00I am using a STM32F031 micro and app note AN3155, using the built in UART bootloader on serial pins A9 and A10.  I wish to write sixteen bytes of zeros to an address near the start of flash, 0x08000010.  Referencing page 18 and 19 in the app note.  The micro is sending ACK for accepting the write command and sending ACK for accepting the address.  The sequence to send the data to write is not clear, with my interpretation the micro neither ACK nor NACK until I send one extra byte.I do note that footnote 2 on page 19 says (N+1) must be a multiple of 16.  Does that mean I can't write 16 bytes because 16+1 is 17, and must instead write 15 or 19?My assumptions:Write 16, my N is equal to 16.Write sixteen zeros.Write the checksum, 16 and 16 zeros, checksum is 16.Problem:STM never ACK or NACK.Observation:If I write an extra zero byte, the checksum would be correct still and that makes the STM will ACK.Data decoded in hex on an oscillos

Posted on July 13, 2017 at 02:31Cannot get HSE Bypass to work for L476 Nucleo board, when 446RE Nucleo and F103RB Nucleo work fine.this stm32cubemx generated code spins in the _Error_Handler. Im thinking a bug in stm32l4xx_hal_rcc.c so far.  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_LSE;  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;  RCC_OscInitStruct.LSEState = RCC_LSE_ON;  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;  RCC_OscInitStruct.PLL.PLLM = 1;  RCC_OscInitStruct.PLL.PLLN = 20;  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)  {    _Error_Handler(__FILE__, __LINE__);  }

Posted on July 13, 2017 at 15:57Hello All,I wanted to know if the STM32F767, supports FIFO for the UART module? If yes, what is the size.I need the FIFO details for configuring the Hardware flow control.regards,Hemanth#uart #stm32f7 #fifo

Posted on April 10, 2017 at 09:44HiAbnormal over current detection behaviour on stepper motor controller L6480. After initialization a hard stop command is given to hold the stepper motor, which seems to work just fine, all the expected waveforms appear on the gates of the transistors. When a move command of 128 micro-steps are given the bridge disengaged with no errors in the status register. After a hard HiZ command and another hard stop command the status register shows an over current fault and phase loss A and B faults! How do I proceed to overcome this situation?Register setup:CONFIG = 0x3880 (PWM div fact=2, PWM mul fact=1.75, VCCVAL=7.5,UVLOVAL=6.3,Bridge shut down on over current detection)GATECFG1 = 0x04FD (WD_EN disabled, TBOOST=375ns, IGate=96mA, TCC=3750ns)GATECFG2 = 0xE2 (TBLANK = 1000ns, TDT=375ns)STEP_MODE = 0x07 (128 microsteps)OCD_TH = 0x1F (1V, the maximum)KVAL_HOLD = 0x25 (0.15xVs where Vs=13V)KVAL_RUN =0x52 (0.33xVs where Vs=13V)KVAL_ACC  = 0x64 (0.4xVs where

Posted on July 12, 2017 at 12:18Dear Sir:I am using STM32L476 and want enter shutdown mode to save power.Right now I had call MX_GPIO_Init();//this is set all GPIO to Pullup and set Input, HAL_PWREx_EnterSHUTDOWNMode();and now the power consumption only 98uA,But spec write Shutdown mode is 8 nA or 260nA(with RTC)How can I reduce my power to nA.PS:I have try disable PVM and  __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WUFx), but still same.

Posted on June 29, 2017 at 17:49Hello the STM Community,To quickly introduce my setup, I work on a custom board with a STM32f407 but I have the same issue with the STM32f4-discovery. I generate a simple project for this card, only to try the USB-OTG-FS library, only device mode, CDC device, and with vbus sensing disable.I flash the board, I plug it to my Win10 computer, it's recognized, everything's fine.I try to communicate with Tera Term, to test the communication PC -> Board. It works fine, I have the data in the buffer, and a breakpoint in the function CDC_Receive_FS is triggered to tell me that it goes that way, it's fine.I try the same with a custom C♯ app (which is my final purpose), but this time it doesn't work. The breakpoint is not triggered, the buffer is not filled. The data are apparently not sent to the correct endpoint. I thought about different reasons :- Could be my board, but since it's recognized, and I have a communication with Tera Term, it's unlikely- Could b

Posted on July 11, 2017 at 00:15 Hi, I have a quick question about the pull-up and the pull-down resistor. For example, I want to use the switch (S1) to control the output of the GPIO pin (PA0), and read this output to turn on/off another LED. When I set the GPIO pin, GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; GPIO_Init(GPIOA, &GPIO_InitStructure); I can make the program work as I expected when I set it to be pull-down or NOPULL (float?). After some searching online, my understanding is that when I set the pin to have a pull-down resistor, there is a pull-down resistor shown in the figure, the PA0 is 0 when S1 is open and is 1 when S1 is closed. Is my understanding correct? Also, when I use the debugmode in Keil, there are a register block and a disassembly block shown on the screen but I do not know how to use them. For example, I want to see the output of the pin PA0 in each step (wh

Posted on May 30, 2017 at 20:46 Hello, I am working with the STM32L486 chipset and we need to generate an exact 38400Hz timer. Currently we have a 5MHz or 25MHz external clock coming in but the PLL clock tree does not seem to favor getting the exact 38400Hz rate for a timer. Is it possible with the above external clock rates? or if not, any suggestions to get this, including a different rate for external clock source? Thanks, ED Note: this post was migrated and contained many threaded conversations, some content may be missing.

Posted on July 11, 2017 at 17:16I am using the STM32F413 and am trying to use CAN1 and CAN2 in a ring topology (CAN1 sends and if CAN2 doesn't get the message then I know I have a network connectivity failure). I use the latest CubeMX to generate the configuration code and CAN1 appears to send messages just fine and CAN2 asserts the ACK bit just fine. CAN1 in loopback mode receives its own message but CAN2 using the same filter configuration as CAN1 in loopback mode always returns HAL_TIMEOUT. When I look at the hardware registers for CAN2, the flags for the receive FIFOs show that no message has been recorded. Here's the filter configuration for CAN2:sFilterConfig.FilterNumber = 0; sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK; sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT; sFilterConfig.FilterIdHigh = 0x0000; sFilterConfig.FilterIdLow = 0x0000; sFilterConfig.FilterMaskIdHigh = 0x0000; sFilterConfig.FilterMaskIdLow = 0x0000; sFilterConfig.FilterFIFOAssignment = 0; sFilterConfi