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Posted on October 19, 2017 at 12:25How can I know the elapsed time between breakpoints in EWARM?

Posted on October 18, 2017 at 14:50HiI'm using I2C1 periphery of a STM32F205 device in master mode. The firmware is based on the HAL V1.2.1 driver with interrupt approach. Three slaves are attached to the bus and 7bit address mode is used. I'm able to communicate with two slave devices but the communication with the third device fails. I following sequence could be observed within the 'HAL_I2C_EV_IRQHandler()' handler:Valid sequence:1. SB bit was set (Start send)2. ADDR bit was set (Slave address send)Void seqence:1. SB bit was set (Start send)2. ADD10 bit was set (First byte of 10bit address send) -> Should be ADDR   The communication fails because the ADD10 bit of the I2C_SR1 got set instead of the ADDR bit. 7bit mode is still configured I2C_OAR1= 0x4000. The obvious difference within the code is the slave address which is 0xF0 for the device which fails and 0xEC and 0x90 for the other ones.   Has someone any i

Posted on October 19, 2017 at 15:03Hello! I cant close socket client be command AT+S.SOCKC -  “ERROR: Pending dataâ€� is raised'.  According to UM1695 it should be flushing pending data  (using the AT+S.READ command) is mandatory before closing the socket connection (AT+S.SOCKC). If the buffer is not erased, the “ERROR: Pending dataâ€� is raised. . I cant find description AT+S.READ. How can I do that properly?AT+S.READERROR: Command not foundAT+S.SOCKC=00ERROR: Pending data

Posted on October 16, 2017 at 21:17Hello,I need to find suitable alternatives to the VN7140AJTR that can swapped in with zero board changes.Is there a complete list of replacement parts available?It looks like the VN7040AJTR is a pin compatible replacement. Can I use the VN7140AJTR and VN7040AJTR interchangeably?Thanks,Brian#vn7140ajtr #vn7040ajtr

Posted on October 17, 2017 at 17:40The original post was too long to process during our migration. Please click on the attachment to read the original post.

Posted on October 19, 2017 at 13:55Hi community!I would like to connect STM32F405VG SDIO interface. What is the best way to do it?I implemented the following example:Best regards.

Posted on October 16, 2017 at 02:56 When I installed the software for the first time, it works fine. Clicking 'Datasheet' icon will open the pdf file. Now this icon is shown as gray, and can't be clicked. I have downloaded all the documents on my computer. When I click 'refresh data' in help menu, 'download all documents', these windows pop up. Does anyone have the same problem with me? I need your help, thank you.

Posted on October 19, 2017 at 09:49Hi.Now I'm trying to implement another Cortex M3 project  with MDK.After compile done, I've got the following messages After Build - User command &sharp1: C:\Keil_v5\\ARM\ARMCC\BIN\fromelf.exe C:\work\BP210\BP210\BP210\systems\cortex_m_mcu\testcodes\hello\hello.axf --vhx --8x1 --output hello.hex'.\hello.axf' - 0 Error(s), 0 Warning(s).Build Time Elapsed: 00:00:00Load 'C:\\work\\BP210\\BP210\\BP210\\systems\\cortex_m_mcu\\testcodes\\hello\\hello.axf' No Algorithm found for: 00000000H - 00000C17HErase skipped!Error: Flash Download failed - 'Cortex-M3'Flash Load finished at 16:45:37What does 'No Algorithm found' mean?what am I supposes to do to resolve this problem?#mdk

Posted on June 30, 2017 at 14:57Hello Team,I have purchased STM32F7 disco board. I want to use CubeMx tool to generate code and modify/use it.Can I get CubeMx project for STM32F7 discovery board : STM32F769i - DISCO (MB1225B)Thank you,

Posted on October 18, 2017 at 19:42Hi all,My custom designed bare STM32L052C (QFP48) board refuses to talk to external debuggers (STLinkV2, JLink) when the power goes below 3.0 Volts on Vdd pins.Only SWD interface and step-down power source are connected. The target voltage is detected correctly by both external debuggers. STLinkV2 is completely new, never connected before. I tried switching debuggers, connecting external PSU, checking all SWD pins, with the same results.The SWD signals, with the exception of 22 Ohm serial resistors, are pretty much the same as in STM32L073Z-EVAL board, which by the way have been proven to work well down to 1.8 V, using the very same equipment. Reset and SWDIO are normally high when the debugger is connected. BOOT0 is grounded.I did my best to follow AN4467 'Getting started with STM32L0xx hardware development' during HW design. Since this is an ultra low power application, I omitted 1uF and 4.7 uF blocking capacitors. The board works reliably at 3.3 V

Posted on October 18, 2017 at 09:29Good morning,I'm working with STM32L475 MCU. I have no problems in programming it via SW interface, but I'm facing some problems when trying to program it via USB port (using Dfuse demo program by ST).First, I use Dfu file manager tool to generate DFU file from the HEX file I have created with Keil.Then, I use DFU Dfuse Demo tool (v3.0.5): I set boot0 and I can program without problems my device but it does not work. If I program with the same tool and I check 'Verify after download', I get the error 'Matching not good. First Difference at address 0x0801E8C0: File byte is 0x30; Read byte is 0xFF'Do you know why I get such behaviour?How can I solve it?#dfuse #dfu #stm32l475

Posted on October 17, 2017 at 11:56I would like to add some source files to the source folder. the files name are :clock.c   and so on.but build faild.I know that this is a problem in the makefile, and SP5Studio provides  clock.c�?components.c .and My source files also have Clock.c and components.c...Causes the makefile rule to check for an error.I think you should develop an eclipse plugin，like this:In this case, the generated Makefile will not appear above the error

Posted on October 17, 2017 at 10:45Hi.I'd like to use external interrupt PA1 nad PB1 pin.But I found the following image, I think I can't use the external interrupt PA1 and PB1. Probably I think I have to  use only one to interrupt set.Can I separately set to the one EXTIx?because before system already use PB1 for external interrupt /* PB1 is connected to EXTI_Line0 :: Configuration AFIO_EXTICRx */ GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource1);/* EXTI Line0 Configuration */ EXTI_InitStructure.EXTI_Line = EXTI_Line1; EXTI_InitStructure.EXTI_LineCmd = ENABLE; /* Enable interrupt */ EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /* Interrupt mode */ EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; EXTI_Init(&EXTI_InitStructure);/* Enable and set EXTI0 Interrupt to the lowest priority */NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01; NV

Posted on October 11, 2017 at 23:35Hello,I am having some difficulties wrapping my head around what's happening with my TIM3 interrupt.  I am creating a timer class for my application.  It needs a 1 microsecond resolution.  For some reason I can only achieve a 2 microsecond resolution.  I started with the STM32F7Cube TIM_Base example for this Nucleo board.  The system core clock is 216MHz.  I have hopefully followed the instructions for configuring the timer using the method from the MCU documentation:Update_event = TIM_CLK/((PSC + 1)*(ARR + 1)*(RCR + 1))  My code is as follows:// Initialize TIMx peripheral as follows for a 1us tick (1MHz): // + Period = SystemCoreClock/1000000 - 1 // + ClockDivision = 0 // + Counter direction = Up TimHandle.Init.Period = (SystemCoreClock/TICK_RATE_HZ) - 1; // TICK_RATE_HZ = 1x10^6 TimHandle.Init.Prescaler = 0; TimHandle.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; TimHandle.Init.CounterMode = TIM_COUNTERMODE_UP

Posted on October 17, 2017 at 15:58According to http://www.st.com/content/ccc/resource/technical/document/application_note/group0/1d/b8/33/4f/dc/0a/45/52/DM00287601/files/DM00287601.pdf/jcr:content/translations/en.DM00287601.pdf, STM32F4 includes DSI interface with up to 2 lanes. See page 15.I am wondering if there is any MCU with 3 data lanes (L0, L1, L2) and CLK lane?#stm32f4 #dsi

Posted on October 16, 2017 at 05:50Hi, I have got an issue with STM32F107 bootloader. The jump to application fails and results in hardfault. Before jumping, I have disabled all interrupts including systick timer and also set the MSP to the initial value as needed for the application program. Is there anything else to be taken care of, before making the jump? Could someone help? I have just copied the relevant part of my code below./********************************* declarations  and defines     ****************************/unsigned               *p;void                       (*user_code_entry)(void);unsigned int          Address_PgrmCounter;#define                  APPLICATIONADDRESS          (unsigned int)0x800e000/********************************* reset system and disabl

Posted on October 14, 2017 at 22:18How to manage: I2C_TransferHandling() for accessing high sector (>255 bit) of a 24c04 eeprom?In a selecting device I'm not capable to modify 0xA0 to 0xA1 for settings A8=1 and access to 256..512 bytes of eeprom.I'm using stm32f051 and fwlib 1.0.0.I know is an old firmware library but I need to manage an old board with added a eeprom memory.ThanksFabio

Posted on December 24, 2016 at 21:51Using STM32CubeMX version 4.18.0 on Windows 10 Pro (build 1607) with an UHD (4K) display results in tiny toolbar icons and a very tiny Clock Configuration diagram.  Please see attached screen capture image.  Not that this application window is not maximized.Is there any way to scale these images within the STM32CubeMX application so that I can see them with human eyes?Additionally, the screen looks the same even when I drag the STM32CubeMX application to a different, lower-resolution monitor.Any help would be appreciated.Thanks,Dale#stm32cubemx

Posted on October 16, 2017 at 21:24Hello All.I am new to STM32F microcontrollers, though I have worked with Freescale/NXP Kinetis ARM processors for quiet a few years.I am trying to get and external interrupt  (on port C bit 13) to work on a 48 pin STM32F091 MCU.A push button is pulled up with an external 10k ohm resistor. Pushing button pulls Port C13 to ground.Here is what I am doing...Initialization...void init( void )// Enable Port C clockRCC->AHBENR |= RCC_AHBENR_GPIOCEN;// Connect PORTC bit 13 to EXTI13SYSCFG->EXTICR[3] = SYSCFG_EXTICR4_EXTI13_PC;// Interrupt on falling edgeEXTI->FTSR |= EXTI_FTSR_TR13;// Unmask EXTI interruptEXTI->EMR |= EXTI_IMR_MR13;// Set EXTI4_15 irq to priority 2NVIC_SetPriority( EXTI4_15_IRQn, 2 );// Enable EXTI4_15 IRQ in NVICNVIC_EnableIRQ( EXTI4_15_IRQn );// Enable global interrupts_enable();}The ISRvoid EXTI_4_15_Handler( void ){         if( EXTI->PR & EXTI_PR_PR13 )  

Posted on October 14, 2017 at 14:40https://community.st.com/tags♯/?tags=foc‌ https://community.st.com/tags♯/?tags=stm32f303 https://community.st.com/tags♯/?tags=foc%20sdk%204.3.0 Problem was in my PCB - it was error during PCB routing. How to correct similar mistake you can read in last postCan be any difference beetweenSTM32F303VCT6  and STM32F303RBT6 except form factor?I'm working with STM32FOC SDK 4.3 for my project https://community.st.com/docs/DOC-1423-my-project  I have working custom PCB with STM32F303VCT6 rev Y  (LQFP-100) and it works as expected. Also I've created a new PCB with STM32F303RBT6 rev Y (LQFP64), which uses same pins configuration as STM32F303VCT6. I'm using three shunt configuration with embedded PGA's for current control and overcurrent protection.1) Both PCBs have same configuration for power stage - high side active low, low side active highI just use compiled firmware fromSTM32F303VCT6  in STM32F303RBT6 and have really strange behaviour od deadtime logic:-

Posted on October 16, 2017 at 05:12All,I am trying to use ADC in two-channel mode and then sending o/p samples to two different buffers using DMA. Each channel output goes to its own buffer. How do I set this up? I am just looking at example on DMA.Is there any quicker way to learn about the way to set up ADCs, DMA?I am using STM32F3DISCOVERY board.Thanks,Mallesh

Posted on October 13, 2017 at 17:25According to chapter 5.3.8 in LIS2HH12 http://www.st.com/content/ccc/resource/technical/document/datasheet/c9/16/f2/79/ca/31/47/89/DM00096789.pdf/files/DM00096789.pdf/jcr:content/translations/en.DM00096789.pdf, multiple reads seem possible but I don't know how  (by using DMA ?) ?It could be really useful to avoid data loss.Any idea ?#lis2hh12 #multiple #accelerometer #fifo

Posted on October 16, 2017 at 10:18Hello.So in STM32F205RE flash memory spans from 0x08000000 to 0x0807FFFF. Any app will be programmed starting from the address 0x08000000. But I want to place it at the starting address of 0x08040000 and don't use the beginning of the flash at all. I'm using IAR and I changed the ROM boundaries in the Linker file to be 0x08040000-0x0807FFFF, vector table starting address also moved to 0x08040000 and finally SCB->VTOR = 0x08040000. But the program just doesn't work. It loads my app to the flash, but it doesn't work properly. For some reason it gets stuck on the first while() located in RCC (while ((RCC->BDCR & RCC_BDCR_LSERDY)==0);) and in the debugger it feels like it doesn't do anything before that (even though it shows that it does) -- step overs are done very quickly, in a instant.So is it supposed to be not working like that and application have to be placed at the beginning of flash or am I missing something? I wanted to place a custom

Posted on October 13, 2017 at 07:48Hello I am trying to create new empty project only with HAL and CMSIS in SW4STM32. I've got STM32F401 and I want to use LL drivers. I create new C project and I set HAL drivers, HAL drivers have also LL driver. How can I use LL drivers? I get some mistakes. Below I put some pictures of this problem. thank you very much!!!#hal-ll #ll #library #stm32f401 #drivers #hal-drivers #nucleo-f401re #ll-drivers

Posted on June 03, 2017 at 20:12I have a board which was designed to use the STM32L433CCU6 and am attempting to use it with an STM32L452CEU6.  The board works perfectly fine with the 433, but I am struggling a bit with the 452.  The problem I was facing is that I am attempting (and failing) to use the HSI as the clock source for LPUART1.  The UART was transmitting but not being understood, and reporting errors when attempting to read.After a bit of work, I have it working fine with the PCLK1 (via HSE/PLL) at 38400bps, but I need to operate at 9600bps.   This cannot be done with an 80MHz clock.In order to see what was going on, I connected HSI to MCO and measured the frequency.  At an ambient temperature of 21C, the HSI on one MCU is running at 13.89MHz and another at 14.29MHz.  That seems excessively out of spec to me.  Doing some digging, it appears that the HSI is not being calibrated properly.I am using STMCubeMX 4.20.1 and the 1.7.0 ver