Solved

Posted on January 02, 2017 at 12:42I'm unable to get the printf output in the keil µVision IDE, so I need a https://community.st.com/tags♯/?tags=checklist to know if my setup is correct.In the Keil project, I configured ST-Link Trace with Core Clock 32Mhz and all ITM port ticked (only number 0 needed, perhaps ?).I run the debugger with the 'printf window' open.I tried:printfITM_SendCharAnd nothing shows in the printf window. Is there something I missed to check?#checklist

Posted on January 04, 2017 at 10:39Hi,We have integrated NFC chip to the beagle bone custom board. We would like to know how to use interrupt  which when triggered by phone allows our application in linux to read from the chip.Appreciate if you can provide some sample code. It has to use I2C protocols.ThanksAswin

Posted on October 21, 2016 at 03:55Hi Sir / Madam,After ST95HF has read its peer NFC device, ST95HF RF field is automatically shut down.  I have to initialise it again using the following functions:        ISO14443A_Init( );         ISO14443A_IsPresent();         ISO14443A_Anticollision();May I know how can I prohibit this to happen.  Because when this happens, where the RF field provide by ST95HF is not stable, peer NFC device is unable to smoothly read by ST95HF.  May I know how can I make ST95HF RF field is constantly switch ON when even I have finished reading and writing to peer NFC RF interface ?Thank you for your advice.Please reply soon.Thank you.Cheers,KF #nfc-transceiver-ics---xx95hf #nfc #nfc-transceiver-ics---xx95hf

Posted on January 04, 2017 at 07:53I'd like to migrate a project from using the internal RC on the STM32F091RC to the 8MHz HSE clock that comes down from the on-board ST-LINKV2's MCO signal.  I use STM32CubeMX to generate SystemClock_Config().  On the panel to the left in the Pinout window, I expand RCC and change 'High Speed Clock (HSE)' from 'Disable' to 'BYPASS Clock Source'.When I do that, everything looks like it's good.  The PF0 pin goes green, the Clock Configuration screen lights up the 8MHz Input Frequency at HSE in blue.  If I generate a report, the RCC section says 'High Speed Clock (HSE): BYPASS Clock Source', but when I generate the code, I get the exact same SystemClock_Config(void) I got before the change.  In fact the freshly generated main.c doesn't change at all as result of the different clock selection in the gui.  Any ideas?#stm32f0 #stm32cubemx

Posted on January 04, 2017 at 20:25I am not sure why the following code is not working. I have used it before for a different pin, but I believe my modifications would allow this to work? I am running the code on the stm32f051 discovery board using uvision5 with kiel. void init_pwm(void){GPIO_InitTypeDef GPIO_InitStructure;/* GPIOA, GPIOB and GPIOE Clocks enable */ RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA | RCC_AHBPeriph_GPIOB, ENABLE); /* GPIOA Configuration: Channel 1, 2, 3, 4 and Channel 1N as alternate function push-pull */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ; GPIO_Init(GPIOB, &GPIO_InitStructure); GPIO_PinAFConfig(GPIOB, GPIO_Pin_0, GPIO_AF_1);TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure;//These vars are inited in the PWM timer section be

Posted on November 22, 2016 at 09:43Hallo,I am trying to solve this problem that I am facing with ADC and DMA use.I use a STM32F303 Microcontroller, with CubeMX vers4.17 and Eclipse.I was able to test and use all the peripherals I needed but I encountered problems with the ADC and DMA.I use the internal Opamps and I want to sample the two analog signals coming from Opamps with ADC1 and ADC3.I followed the tutorial http://tunizem.blogspot.de/2014/09/using-adc-with-dma-on-stm32.htmlAnd with this I was able to succesfully enable ADC1 and sample using DMA1, with the TIMER3 configured as trimmer.Then I tryed only with the other channel, I was able to succesfully enable ADC3 and sample using DMA2 (again with TMR3).The problems come out when I use the two configurations together: the DMA1 buffer is filled with both data coming from ADC1 and data coming from ADC3!! This doesn't happen with the buffer of DMA2 in which the sampled data are still correct.I checked the data both through send

Posted on January 04, 2017 at 02:11Does HAL library has any function that can check for the interrupt status on any given EXT line?  For example,I have configured:    HAL_NVIC_SetPriority(EXTI0_1_IRQn, 0, 0);    HAL_NVIC_EnableIRQ(EXTI0_1_IRQn);Now when an interrupt occurs, is there a HAL function to check whether EXTI0 or EXTI1 had caused the interrupt?Thanks.

Posted on January 02, 2017 at 16:09Hi I used to work with SPC5Studio with a permanent license. Now I have a license error:make all Compiling boot.s./components/spc560bxx_platform_component/lib/src/boot.s:1:0: internal compiler error: initialising license system Demo license has expired (-49) (Product: ppc-free-gcc, Version: 2013.01)Please submit a full bug report,with preprocessed source if appropriate.See <mailto:support@hightec-rt.com> for instructions.make: *** [build/obj/boot.o] Error 1

Posted on January 03, 2017 at 09:44I am trying to communicate with a device (a radio module which has inside STM32F103 MCU ) with my STM32f072B disco board using SPI I can program the radio module almost as a standard STM32 MCU the only difference is that I don't have access to all pins.Disco board is set as master, the RF module is a slave.Both devices run at 16MHz; SPI prescaler is 256, 8bit data size, H polarity, 2edge phase, soft management of nssI managed so far to output the clock signal but I don't have nothing on the MOSI line, allthough I'm sending dataI am not fully cleared about how the pins must be configuredThe program for disco board:#include 'stm32f0xx.h'#define u8 uint8_t#define u16 uint16_ttypedef uint32_t u32;typedef signed short s8;void spi1_config(void);void delay(uint32_t t);#define NSS_Port GPIOA#define NSS_Pin GPIO_Pin_4/* Private macro -------------------------------------------------------------*/#define NSS_hi() NSS_Port->BSRR = NSS_Pin#define NSS_lo(

Posted on January 02, 2017 at 19:16I was wondering if I am able to connect an external voltage reference of 4.096 volts to VDDA (to be used as a voltage reference for ADC) without damaging the board?

Posted on October 05, 2016 at 17:48Hello,i am using a custom made bootloader on an stm32f107. So i need to change VECT_TAB_OFFSET in the application code to offset the vector table. But every time when i`m generating code with Cube Mx the file system_stm32f1xx.c gets overwritten. Is it possible to add a user code section to change the defiene?Thanks for your help #cube-mx-bootloader-vect_tab_offs

Posted on October 03, 2016 at 22:01Is it possible to generate a project in STM32CubeMX to use a USART on STM32F7 parts in RS485 mode? I see RS485 mode listed in the HAL reference and STM32F7 reference, but I can't find details on what pin is used for the driver enable. #stm32f7 #rs485

Posted on September 17, 2016 at 00:56Hi,I used to work on STM32F4 and now are evaluating STM32F7. When I tried to create a project with STM32F769NI with SPI. I found that I can't set the Prescaler to 2 (APB2 = 108Mhz) which will result the SPI6 to 54Mhz.The error message is ''With this Prescaler value and APB2 Clock Frequency (108.0 MHz), Baud Rate is more than : 50.0 MBit/s. But the datasheet clear said it can go up to 54MHz. So..The program is wrong, datasheet is wrong or I am wrong? (SPI 6, master mode with full duplex). I also set the voltage to 3.3. Regards,TYY #stm32f7-spi

Posted on December 29, 2016 at 04:33I have an '091I enabled the Usart1 TX DMA as circular, but how can I set the Source address and size ?<<code>>    hdma_usart1_tx.Instance = DMA1_Channel4;    hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;    hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;    hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;    hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;    hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;    hdma_usart1_tx.Init.Mode = DMA_CIRCULAR;    hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;    if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)    {      Error_Handler();    }    __HAL_DMA1_REMAP(HAL_DMA1_CH4_USART1_TX);    __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx);  

Posted on December 28, 2016 at 10:22The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on December 31, 2016 at 12:09Hi, I have erased my nucleo STM32f401re by keil ide, now it doesn't work, also not respond to a simple program like blink or serial port printing hello world, just two red LEDs remain on as soon as power on, is there anybody can help me? is that possible I missed my bootloader?#thanks-for-your-help-!-! #help. #bootloader-problem #works-in-keil #not-working

Posted on December 29, 2016 at 19:44Hi, I have a NUCLEO-F303 board which I would like to use to communicate to two devices using SPI. The NUCLEO would be sending and receiving data to and from the devices via MOSI and MISO.Looking through the datasheet, I'm very confused by the slave select management bits (SSM and SSI) under master mode, and how I should configure them for my application so that I can manually drive a GPIO pin low for slave select and then clock in/out the data.Since I have multiple slaves, I'm assuming SSM = 1? On page 964 of the reference manual, it also says '... slave select information is driven internally by the SSI bit value in the register SPIx_CR1...'. So going by that, after I pull a GPIO chip select pin LOW, I also set SSI low to indicate that a slave has been selected? When I tried doing this, I get a frame error in the status register. I also tried leaving the SSI bit high, but the contents of the data register always reads 0xFFFF.Any clarifications woul

Posted on December 30, 2016 at 02:30Cortex M0 is an ARMv6-M processor. (using an '091 with CubeMX 4.18, Keil uV5 )I am trying to initialise the DMA Circular buffer configurationI cannot find an implementation of the Circular buffer.in the examples, Uart two boards_COMDMA EvalUartHyperterminalDMAboth use NORMAL mode.   hdma_tx.Init.Mode                = DMA_NORMAL;???

Posted on December 23, 2016 at 15:23 I'm trying to blink a LED on a Nucleo-L476 with CubeMX and ST's HAL. It worked perfectly on Windows (System Workbench). Now, I'm trying to do the same on Linux with CubeMX and Qt Createor (my favorite IDE) and OpenOCD. I am now able to compile and debug the target. However, the program crashes during HAL initialization. More precisely, when it tries to access the SystemCoreClock variable. The problem, in general, is that a global function can't be accessed from a function : uint32_t dummyVar = 123; void dummyFunc() { uint32_t loc = 123; uint32_t *p = &loc; p = &dummyVar; // debugger says &dummyVar = 0x20000004 and p = 0x011a3b01 (outside RAM) __asm('nop'); __asm('nop'); __asm('nop'); loc = dummyVar; // *** crash here (WWDG IRQ) or random value } The variable p here points outside the RAM, which starts at 0x20000000. The nop instructions make sure p = &dummyVar; is really executed

Posted on December 29, 2016 at 17:57THIS ISN'T A QUESTION - IS A RESULT.I was having issues getting some static arrays to stay in FLASH, not SRAM. Since they NEVER change, allowing them to load into SRAM just means the exist in both flash & SRAM (aka: init'd values copied to SRAM). Since I feel the full solution isn't trivially obvious, I'll record it here for others.I am using AC6/STM System Workbench and STM32L152RE, so my solution might be specific to the CGG used and default linker scripts.The simple array was easy - just adding the CONST caused &data_flags to be in the FLASH (0x080XXXXX range) instead of SRAM (0x200XXXXX range).static const uint8_t data_flags[] = {    (DS_FLAG_PROTECT),                                  // DB_COUNTERS_CTBOT    (DS_FLAG_PROTECT),   &n

Posted on December 27, 2016 at 04:08I  choose the device that is stm32l031f6 in my project,but i can'i find a suitable software to load my proogram,i try flash demo v1.1.1,v1.3 and v2.80 to do it ,but they are all failure,as seem as the mcuisp and flymcu ,which only program one times.so i want to know whether my opreration or software problems?#stm32 #flashloader #stmflashloader

Posted on December 28, 2016 at 03:13Hi,Do you know about http://www.openstm32.org/   forum?It looks not much effective.Can I post related things in STM32 MCU community?

Posted on December 28, 2016 at 09:37What is difference between MCU STM32F051C8T6 and STM32F051C8T7. What does it mean last two char in model name?

Posted on December 20, 2016 at 22:44I am trying to create a usb cdc interface on a stm32l432kc nucleo board. Upon enumeration with the host computer the device appears as two seperate interfaces. When looking at the packet data, the device has responded with a babble error on a get line coding setup request. What are possible causes of a babble error during a typical setup request? Where in the usb code does the device respond with this error?#usb-cdc #usb #stm32l4

Posted on December 21, 2016 at 00:05Does anyone have a working example of usb-cdc for an stm32l432 processor? The stm32l4xxCube libraries only have usb-hid examples for the stm32l432kc processor, however I need to have working usb-cdc capabilities. I have not been able to easily adapt the usb-cdc examples for other l4 devices to the l432.#stm32l432 #usb-cdc #example #usb #l432