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Posted on November 03, 2017 at 14:07Hallo, Since I think that the use of auto generated code using MXcube helps a lot, I have a question regarding the best workflow to use in the following case.My board is powered by an external power source. In this state it works at full speed. When the external power source is disconnected, the MCU goes in standby to reduce the power consumtion because, in this state, it is powered by a coin cell. The only thing it has to do is wakeup (using the RTC) every 100 mS to check some gpio and then it has to go again in standby.there is a gpio that inform the MCU if it is powered by the button battery or by the external supply.In this case it seems to me that I need of two different MCU setup depending on wich power source is feeding the board.It is not an easy situation for MXCube, is it?Ideas?Thank you in advance.Paolo

Posted on November 01, 2017 at 20:58Hello!I'm designing a board with a STM32F2 series MCU and i was using JTAG as programming/debug interface, but now it's becoming out of pins and have no more free space in the PCB, the only option I have is to remove those heavy 20-pin JTAG header use Serial Wire.I have searched a lot on Google and on ST's documents and didn't found anything about how i can program my external NAND attached to FSMC using SWD interface. I've found that -->JTAG<-- supports it, but nothing about SWD.In my project, i need to have some files inside the nand(obvious using a filesystem). Do I need to write a USB Mass Storage driver to send files there or can it be done using SWD interface? Or can I only manipulate data at bytes/words level?Thanks,Axey Gabriel M�ller Endres#fsmc #nand #swd #jtag #programming

Posted on November 02, 2017 at 17:16Hi everyone,I have been just getting started with the model-based design using MATLAB/Simulink with the Target Support Package for my STM32F407VGTx Discovery Board.But with the configuration for the MCU using STM32CubeMX done, there is no input port in the ADC_Read block availible.In my STM32CubeMX Project (in the attachment, Version 4.22.1) I actived three channels of ADC1 (IN0, IN1 and IN2). Principally, these three channels must be availible in my Simulink project. However, as shown below, CH0, CH1 and CH2 couldn't be checked.Is there anyone who can help me to solve this problem?Thank you!#adc #cubemx #simulink #stm32-mat/target-matlab

Posted on October 27, 2017 at 21:49Hello,I am using STM32CubeMX to configure the STM32F103C8T.  I want to use Timer 3 in two modes at the same time.  I want Timer 3 channel 1 in input capture direct mode and Timer 3 channel 3 in output compare channel 3 mode.  I know that the prescaler and period vlues will be the same for both timers.  That is not a problem.  I have tried with two timers, each with one of the modes and with identical prescaler and period values, and this seems to work.  However, when I try to use both modes, one in each of channels 1 and 3 on Timer 3, it doesn't seem to work. Is it possible to do this?  I have been wrestling with it, reading considerable literature, seeking examples, reading Mastering the STM32, etc. without success.  A simple 'yes' or 'no' answer would be very helpful.Best regards,Peter

Posted on June 09, 2017 at 12:06I wish to use ADC1 to measure 6 channels and to have the results DMAd into memory.I am using CubeMX V4.21 and I think that I have set the parameters up correctly(See attached screen snip ADC_DMA_1 to 3.PNG)This sequence is to be triggered by S/W to run once, terminate and then run again sometime later.(This is in a loop for testing at the moment).The DMA happens as I am seeing the ADC readings appear in the adc1_data array and I get the DMA half complete interrupt handler being called but not the end of sequence interrupt.What am I doing wrong please.....My code is :-uint16_t adc1_data[6];#define ADC1_BUFFER_SIZE_IN_BYTES 12#define   ADC1_TEMP1_OFFSET                   0#define ADC1_TEMP2_OFFSET                    1#define ADC1_VBOOST_OFFSET     &

Posted on October 12, 2017 at 22:25http://www.st.com/content/ccc/resource/technical/document/reference_manual/cf/10/a8/c4/29/fb/4c/42/DM00091010.pdf/files/DM00091010.pdf/jcr:content/translations/en.DM00091010.pdf talks about ADC external trigger and I don't understand if we can only use the timers for input capture or we can use use a timer event (without external signal) to trigger the conversion.I want to set a timer to trigger a ADC conversion at 100Hz. I know how to set up a timer to achieve that. I tried per example to start the ADC conversion on a Timer IRQHandler but should be a better way to do that without cpu.Thank you#adc-trigger #trigger-timer

Posted on November 02, 2017 at 06:07Hello,I am trying to open .ioc file in STMCubeMX version 4.19.0 , then I am facing error as 'Try to load project which is created with more recent version of cubeMx'.Is this means, new tool cannot support project which are created with old tool?How can I open .ioc file which is created with old CubeMX tool?Thank you,

Posted on October 31, 2017 at 21:32 My project involves sending packets of bytes out of the serial port using DMA. I am using an STM32F417 with DMA2 using USART3. DMA transmit buffer is set to The packets that stream the current head position (live) are 66 bytes and stream at 10Hz. Occasionally, longer packets of camera head moves that were previously recorded to flash are sent. This is where I started to notice problems in the DMA output. 00 00 00 00 00 00 00 00 00 00 00 00 00 00 15 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 16 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 17 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 18 23 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 19 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1A 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1B 23 56 89 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1C 23 56 89 The above packets are frames from a camera move and at frame 18 (which is hex, so that's frame 24), there is an

Posted on September 06, 2016 at 02:03Hello, I am interested in using the M24LR64E-R in an application very similar to STEVAL-IPR002V2. Is the firmware available to download for this evaluation module? -Mike #m24lr64e-r

Posted on October 31, 2017 at 08:41This is fundamental question, but I am confusing...Please tell me what I think is right or wrong:To communicate with LSM330DLC on SPI mode, the number of wiring between host and LSM330DLC is 5.1 CS_A2 CS_G3 SCL_A/G(SPC)4 SDA_A/G(SDI)5 SDO_A & SDO_G tied togher(SDO)The point I am comfusing most is the 5th wiring above.Or must I use 2 pairs of SPI interface to use both Acc and Gyro?

Posted on October 30, 2017 at 19:18Hello,I am trying to use my JLink Ultra+ with stm32h7 nucleu 144 board. I followed the instructions on:https://gnu-mcu-eclipse.github.io/developer/j-link-stm32-boards/ but could not make it work, after connecting all the pins, i removed the CN4 jumpers. At this point i see that the probe senses the board, but the sw4stm still gives me an error about unconnected board....Has anybody been able to use an external JLink probe with a nucleu 144 board?I am using sw4stm IDE.Thanks,Evgeny#sw4stm32-eclipse #stm32h7 #segger #jlink #sw4stm32

Posted on October 30, 2017 at 18:14In FIFO_CTRL3 of ISM330 DLC, you allow the data from both gyro and accelerators to be decimated by the factor in this register. I'm wondering if it is doing an average based on the decimation factor? or is it just pick out one of the dataset within the decimation factor 'window'?

Posted on October 30, 2017 at 13:38 Hello, I am studying the STM32F4xx_DSP_StdPeriph_Lib and I am trying to understand how to handleEXTI0 interrupts using the STM32F4xx Discovery Board. The firmware should execute the interrupt when the GPIOA0 is triggered (in this case with the User button) and sequentially toggle the GPIOD[12:15] pins. The code I wrote is the following: #include <stm32f4xx.h> #include <stm32f4xx_rcc.h> #include <stm32f4xx_gpio.h> #include <stm32f4xx_exti.h> uint8_t gpioDIndex; // ISR void EXTI0_IRQHandler(void) { if(EXTI_GetITStatus(EXTI_Line0)) { EXTI_ClearITPendingBit(EXTI_Line0); gpioDIndex++; if(gpioDIndex > 3) gpioDIndex = 0; } } int main(void) { // GPIO, NVIC and EXTI declarations GPIO_InitTypeDef GPIO_t; NVIC_InitTypeDef NVIC_t; EXTI_InitTypeDef EXTI_t; // SYCFG and GPIOA GPIOD Clock enable RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOD, ENABLE); //

Posted on June 14, 2017 at 11:58Currently I have an issue when trying to allocate a structure to RAM.The issue I have is that my structure occupies a total of 373 bytes but the compiler/linker is insistent on trying to locate this structure in the zero page (first 256 bytes). To enable compilation I have reduced the size of the structure to allow for viewing of the map file to see where the compiler is allocating this data.I have attempted to use the pragma directives to allocate this structure to the @near range, which would allow anywhere within the RAM space. This again gave me a section overflow of the zero page! To go one step further I have defined my own section within the RAM space with the required size memory allocation. I have positioned this directly after the zero page and prior to the .data section. Using absolute addressing and the pragma directives I am still experiencing the same issues, or, now I have an error as the symbol has been defined for the zero page. I have

Posted on October 27, 2017 at 17:44I'm trying to do a bare metal setup for a STM32F303K8 and am trying to understand how STM ADCx_INx pins are connected/routed to an ADC. Is there a multiplexer that is setup to 'gate' one of the the many ADC INx pins to a ADC?In particular which registers do I manually configure, for example, to connect ADC2_IN4  to the ADC2. I'm assuming I would first set the pin to analog using the MODER register. But what register should I do next? My goal is to do a reading on one pin one time.Thanks for any direction.

Posted on October 30, 2017 at 01:05Thank you in advance!

Posted on October 05, 2017 at 21:54Hi,I'm trying to compile the STM32F30x User Project with based on AC6:FOC SDK\v4.3.0\STM32 PMSM FOC LIB\Web\Project\AC6\STM32F30x_UserProjectWhen compiling I get the following error:arm-none-eabi/bin/ld.exe: cannot find -lMC_Library_STM32F302x8_single_driveCompiler is not able to find this library, which is correct since the file/library is not available within the library search path.Anyone an idea about where to find, or how to get �MC_Library_STM32F302x8_single_drive�?Thanks.#stm32-mc-pmsm-sdk

Posted on October 26, 2017 at 10:35Today I have just updated my STM32CubeMX to the 4.23 version.I migrated the project I am using currently. It uses a STM32F767VITx. So far, I was using the 4.21.1 version of STM32CubeMX.Today I made some changes in my STM32CubeMX project in order to change some settings. But when I was about to commit this changes to GIT, I noticed the file ''rtc.c'' (generated automatically by STM32CubeMX and never edited manually) had changed. So, I opened this file in order to see what it changed.In the image below, you can see the problem: STM32CubeMX now generates the variables ''sTime'' and ''sDate'' as global variables, but never initializes them. So all the settings you configure in the STM32CubeMX are never used. I looked for this variables over all my project and I didn't find any call or use, so these two variables are never initialized to any value.This error (I guess it is an error) have appeared in this new release.Even I started I new project from scrat

Posted on August 31, 2017 at 15:05I am using the example certificates provided by ST (en.STSW-TLSpack.zip), specifically Example 2 for encrypted communications in One Way mode.I am using the 'Client_Socket' example of the SDK 'STM32CubeExpansion_WIFI1_V3.0.2' in a NUCLEO-F401RE and the WIFI module SPWF04SA (X-NUCLEO-IDW04A1).Using OpenSSL I have obtained the Subject Key Identifier of the file 'ca_cert.pem' which is '3EF1747FD79122144BCADF4F95DF960A32823B4C', and the certificate I placed it in a char array in the SDK sample code.For server testing, I am using a Raspberry Pi and OpenSSL, I have placed all the necessary files together in a directory and started the server with the following command line:openssl s_server -cert server_cert.pem -key server_key.pem -tls1_2 -www -accept 4443Start the NUCLEO-F401RE card next to the shield X-NUCLEO-IDW04A1 configured in USART mode, and I get the following:-> OpenSSL Server on Raspberry Pi at 172.26.3.83:Using default temp DH parametersACCEPT

Posted on October 30, 2017 at 10:02LIS2DW12, if interrupt pins (INT1 & INT2) are configured to open-drain mode, will they still work if the VDDIO supply is cutoff? (and the interrupt pins are pulled up to another supply voltage) and the VDD is still connected to 1,8V ? Will the VDD voltage still control the open-drain pins or is it completely fed by the VDDIO voltage?#lis2dw12

Posted on October 27, 2017 at 14:52I am currently in the development process of a new product and I need the timer to run at a much higher frequency than the datasheet specifies.I have a 32MHz clock connected to the processor and I need minimum 96MHz on the timers. But only on the timers. The rest of the processor is allowed to run at 'only' 32MHz.Does anybody know if the hardware can handle such a setup?

Posted on October 25, 2017 at 08:47Hi,I am using STM32F401RE. For my USB device application I used DFU class stack from STM32cube mx.I have ported stack to my application,It is working fine but I always misses first byte received after initialization of USB device and subsequent enumeration.HAL_PCD_EP_GetRxCount returns correct number bytes but HAL_PCD_EP_Receive gives no data.Following is code snippet of DATA out stage :volatile unsigned char rite_14[68];volatile unsigned int rite_11=0;USBD_StatusTypeDef USBD_LL_DataOutStage(USBD_HandleTypeDef *pdev , uint8_t epnum, uint8_t *pdata){ USBD_EndpointTypeDef *pep;unsigned int rite_12=0;if(epnum == 0) { pep = &pdev->ep_out[0];if ( pdev->ep0_state == USBD_EP0_DATA_OUT) { if(pep->rem_length > pep->maxpacket) { pep->rem_length -= pep->maxpacket;USBD_CtlContinueRx (pdev, pdata, MIN(pep->rem_length ,pep->maxpacket)); } else { if((pdev->pClass->EP0_RxReady != NULL)&& (pdev->dev_state == USBD_S

Posted on October 23, 2017 at 10:23Hello,When I receive MQTT message it looks like one extra character is added to topic:+WIND:86:MQTT Published:0:devices/MCTEMP77/commandd:0:0:0:4:4:testTopic should be:devices/MCTEMP77/commandand not:devices/MCTEMP77/commanddAdded character is always last character of topic.Regards

Posted on October 27, 2017 at 22:01Is the I-NUCLEO-LRWAN1 extension board plug-in compatible with the STM32F429 Nucleo-144?#lorawan #nucleo-144

Posted on July 21, 2017 at 11:02I am trying to create a project for either the L469 Discovery or Nucleo-144 board using CubeMX.My setup is the following:CubeMX 4.22.0L4 Firmware v1.8.1Using STM32 AC6 latest versionIt appears as though CubeMX does not populate the FreeRTOS related directories with the required source files.Doing the same thing for an F4 board I have no problem, so I'm assuming it is an issue specific to either cubeMX or the latest version of the L4 firmware.Does anybody else have this issue?Anthony. #cubemx-project #stm32l4 #bug #cubemx #freertos