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Posted on February 05, 2017 at 16:28Hi,I am trying to interface SD card to stm32l432kc micro controller over SPI and using sparkfun's sd card breakout board.https://www.sparkfun.com/products/12941. I am using sandisk 2GB memory for test.I did connections in following way.PA1(SCLK) - SCLK(SD)PA6(MISO) - D0(SD)PA7(MOSI) - CMD(SD)PB4(CS) - D3(CS in SPI mode)3.3V - Vcc(SD)Gnd - Gnd (SD)In this controller there are two SPI's. I tried both but not able to pull SD card out of Idle mode. Tried using different CS pin other than NSS pins, tried with all alternate functions available on pins. But the results are same. Following is the sequence that i am using.1. CS high2. Initial sequence of 80+clock pluses3. CS low4. Send 0x40,0,0,0,0,0x95 to put sd card in Idle mode.I could see the  MOSI and clock pulses on logic analyzer (USB) and SD card is expected to send 0x01 response for CM0.But i am getting 0xFF only.code for SPI init__HAL_RCC_GPIOA_CLK_ENABLE();__HAL_RCC_SPI1_CLK_ENABLE();GPI

Posted on February 06, 2017 at 17:58I'm really stumped on this one. I have a STM32F411 chip on a Wifi module and I'm trying to get the Serial Wire Output to work. My configuration code is below. Now I can see that there's some signal on the SWO line under the oscilloscope. The signal is about 3.1V peak to peak, but biased around 0V (i.e. signal is changing between -1.5V to 1.5V). On my computer, ST-Link Utility shows nothing in the Serial Wire Viewer. My clock is configured to be 96MHz through PLL and the ST-Link automatically chooses 2MHz for the SWO frequency. However, the signal from the oscilloscope looks more like 1MHz. Any idea on how I can fix this?/* Configure Trace Port Interface Unit */   CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; // Enable access to registers   TPI->ACPR = 47; // Trace clock = HCLK/(x+1) = 2MHz   TPI->SPPR = 2; // Pin protocol = NRZ/USART   TPI->FFCR = 0x102; // TPIU packet framing

Posted on January 26, 2017 at 15:09Hello,I'm using a STM32F767BI and I want to use the bootloader functonnality. I want to use USART1 (PA9/PA10) and the BOOT0 pin. I read AN2606 and I use pattern 9  (nDBANK(bit) = 1, Boot(pin) = 1 and BOOT_ADD1(optionbyte) = 0x0040')So :- I configure my options bytes (even if default value was ok)- I set the BOOT0 pin to 1- I power my board-  I send 0x7F several time to activate the bootloader in UART mode.On my board this doesn't work : the �C doesn't respond.I tried the same thing on the F7 discovery board and it worked fine. The main difference is the �C (STM32F746 for the eval board)I know the nDBANK register has been add on the F76X serie but I don't understand why this doesn't work on my board.Do you have any idea ?Thank you in advance !#bootloader #stm32f767 #stm32f7 #bootloader-problem #uart

Posted on February 05, 2017 at 14:01i am trying to programm stm32f429 MCU on custom board with keil,i have generated project with cubeMx but when trying to programm the MCU i get the message 'Flash Timout. reset Target and try again'.keil can see the MCU but would't erase the MCU.What could cause that Issue?Thanks.

Posted on February 06, 2017 at 11:14RM0090 rev.13, 7.3.15  RCC APB2 peripheral clock enable register(RCC_APB2ENR), should be removed entirely - while ch.7 is for the '40x/41x, this subchapter contains RCC_APB2ENR for the '42x/'43x. Note, that there *is* ch. 7.3.14 containing the proper RCC_APB2ENR register for STM32F405/415/407/417.JW

Posted on January 19, 2017 at 18:44For evaluation purposes I created a MATLAB/Simulink model which uses the STM32MatTarget 4.4.0 blocks.With the MATLAB/Simulink version R2016b I get a lot of warning messages (around 160 with a small model):Warning: NARGCHK will be removed in a future release. Use NARGINCHK or NARGOUTCHK instead.How do I fix these warnings?Where is the code located, which generates these warnings?The deprecated function to check the number of arguments ('nArgChk') is describet athttps://de.mathworks.com/help/matlab/ref/nargchk.html.#simulink #stm32-mat/target #matlab

Posted on February 05, 2017 at 11:03I am use stm32f429.Me need USB HS connection (speed 480 Mbit/sec) configured as 'Device_Only'.Can I am C for this application?Or me need use external PHY ?OTG not need me.Thank you.

Posted on February 03, 2017 at 09:15Hello,I am guessing that code generation with LL drivers is not yet supported for product families such as F1 and F0, although it is a bit confusing that in New Library manager F0 drivers claim LL support from version 1.6.0 onwards. Does that mean that HAL based code is generated, but LL drivers are also included in the project?Can we expect LL code generation support in STM32CubeMX for F0 and F1?How soon can that be expected?Thank you and regards, Matic#stm32f0 #cubemx #ll

Posted on January 24, 2017 at 13:20The Nucleo-64 UM1724 Rev.11 mentions STM32L452, but that's about all we know of this chip (one more ST presentation could be found on the net mentioning this model).As said UM is out for more than a year, is this going to be a real product anytime soon?Thanks,Jan Waclawek

Posted on February 03, 2017 at 19:44I have my clock setup for 168MHz and I see that with a scope at MD0. But a call to BSP_CPU_ClkFreq() indicates it is running at 550 MHz. This is the setup I have in bsp.c://  Configure for 8MHz XTAL => 168MHz SysClk#define  BSP_BIT_RCC_PLLCFGR_PLLM                4u#define  BSP_BIT_RCC_PLLCFGR_PLLN              168u#define  BSP_BIT_RCC_PLLCFGR_PLLP                2u#define  BSP_BIT_RCC_PLLCFGR_PLLQ                7u  RCC_DeInit();  RCC_HSEConfig(RCC_HSE_ON);                /* HSE = 8MHz ext. crystal.         &

Posted on October 22, 2016 at 21:50Hello,We are implementing a product based on STM32L476VG and need to use DFUTo test the procedure we used  STM32L476VG Discovery board. The following issue has been found:- Compiled a simple LED switching application in IAR converted to DFU by the file manager (tried both bin and hex)- Tested via ST-LINK - firmware works fine- Started DFUSE utility- Connected BOOT0 to 3V, reset - the board presented itself as DFU- Downloaded DFU- removed BOOT0 connection, pressed reset - application does not startTried both DFUSe 3.0.5 and DFUTester in the package - same result - downloads OK  but does not start. Also tried to set flash address to 0x080000000 during ''to bin'' conversion - no effect.Same setup, same host tested with STM32F071 works without a problem.What could be a problem? Any help would be appreciated.

Posted on February 03, 2017 at 13:38We have a problem using STM32F407G-DISC1.We have a custom PCB that mates with the DISC1 board. The PCB has an SD Card slot wired to SPI1 on the DISC1. We have tried a number of DISC1 boards about 50% of them are able to read the SD card about 50% are not (fail to mount) (of about 30 DISC1 boards).We have tried many things to discover the source of this problem but can not pin it down to a single source - I've listed what we have tried below.We've used DISC0 before (about 10 boards) and not seen this problem.One thing that we can't understand that seems to make a difference is touching some pins on the DISC1 with your finger (PE1, PE2, PE3, PE4) - these are unconnected pins that have been set as output pull-up (we've also tried analog input). This effect seems to be present whatever else we try.Things we've tried. Decoupling caps 3V-GND on SD card pins, pull-up 10k resistors on SPI (MISO, MOSI, CLK), unused pins to input, pullup, unused pins to analo

Posted on February 03, 2017 at 10:57Hi,I use the ST Visual Programmer to flash a stm8S007C8 and this is working good, until the size of the .hex file is bigger than 155 kB. After this size the STVP shows an error/warning that it is out of range'FILE : line 3602: Address 0xXXXX is out of range and is ignored!' (see attached picture 001). The range (0xXXXX) starts from 0x8000 until 0x8BC7 (this depends on the size of the .hex file). If I flash the stm8 it's not starting because its overwrites/ignores the interrupt vector table. I have 6 kB left on the memory of the stm8 but i can't use it because of this problem.Is there a solution how to fix this?Thank you for your help.#st-visual-programmer #stm8s007 #stm8

Posted on February 01, 2017 at 16:06Hi,I'm using a SPWF01SA1 module to send data from my application to a central server using POST requests.I need to transfer 64 kByte of binary data (application/octet-stream) using a single POST request as I want the destination server to receive a single transfer command which must be validated and confirmed back for correct reception.I've seen that the command AT+S.HTTPPOST has limitations on maximum length so I cannot use it.Then I've upgraded the firmware to version 3.5 to try command AT+S.HTTPREQ, build my own POST header and be able to send data after the command.In this way I've managed to send up to something less than 12 kByte. During transfer, the RTS signal is raised every 1024 byte so I inserted a pause to let the buffer flush. No matter how long I wait between the HTTPREQ command and the data (should I wait?) or between RTS signals (all of which stay deasserted for a fixed time of less than 3.5 ms and I've raised my pause time up to 1 s

Posted on February 03, 2017 at 11:23Hello,I selected the STM32L051C6T6 for a small project (package LQFP32)The datasheet states that this microcontroller has a VREFint out pin (PB1, additionnal functions).I just can't find out how to output the internal analog reference voltage on this pin. There is absolutely no piece of information on how to do this on the datasheets.I enabled the VREFINT bit in ADC_CCR register (I can actyally read the Vref value with the ADC), I tried differents MODER settings for the GPIOB (alternate mode, analog mode), had a look into PWR_CSR register and the VREFINTRDYF is 1.But still no 1.224V on the output.Does anyone have an idea ?Thanks,#stm32l051 #vref

Posted on February 03, 2017 at 13:49Hi,There is an interesting board currently in 'Evaluation' phase: STM32F413H-DISCODo you know when this board will available for purchasing?Thanks,Bogdan

Posted on February 01, 2017 at 11:57Hello,in DocID027100 Rev 3, PA0 is marked to have an IO-Structure 'TTa' , but 'TTa' is not explained in Table 15.Bye

Posted on February 03, 2017 at 09:00Hai, My name is Akhil Francis. I am from India. I am very new to STM32 micro controllers. I am doing  a project of autoclave using STM32F103R6.  IDE is kiel.  I read datasheets, which is available in the STM32 website. Now i am doing some research on codes(ADC, USART, EXTERNAL INTERRUPTS, SPI, RTC, GPIO). Is there any reference manual available about each peripherals with register descriptions?. I didnt find anything, may be its my fault.  If,  is there any documents about  register descriptions. please give me the link.Thanks in Advance Akhil Francis

Posted on January 31, 2017 at 21:19The notes in misc.c for NVIC_Init() state that NVIC_Init() should be called first.The notes for NVIC_PriorityGroupConfig() list 4 priority groups. What are these priority groups and how are they determined?There are 5 groups of 4 bits so how are they to be packed into a uint32_t?The function NVIC_Init() is called more than once in our code, I assume one call to NVIC_PriorityGroupConfig() covers all calls to NVIC_Init() and needs to precede all of them.Thanks,JH

Posted on February 01, 2017 at 16:15In the last CubeMX version (4.19) the USE_TICKLESS_IDLE option is missing. This disables the configUSE_TICKLESS_IDLE flag and the low power configuration.Is it a bug? Is any workaround available?PS: I've checked the 4.17 version and it has this option available. I don't have the 4.18, so I can't check it.#cubemx #freertos #cubemx-4.19

Posted on January 11, 2017 at 18:02In an IAR/EWARM environment, when I use STM32CubeMX 4.18.0 Project/Generate Code function the program seems to correctly generate its own files but deletes user (that is, my files) from both the EWARM project and from the file system.It appears this was reported for some earlier CubeMX versions too ( https://community.st.com/0D50X00009Xkf15SAB for ex). Anyone else suffer and fix this issue? EDIT 170112 confirmed as a regression --- non-cubic sources preserved with 4.16.0. Not sure about 4.17.0.....

Posted on January 31, 2017 at 19:02Hi  I am new to the STM32L0x processor, and have moved from a freescale 8 bit controller. The first thing I am looking at is the system clock. I have a few questions hopefully someone can help? Many ThanksI understand the 2 external oscillators, HSE and LSE. I am planning to design low power applications, and not sure if I have picked this up correctly, as only used to 1 system clock:  1. If I use an extarnal 32.768Kz external crytal for the LSE, I see it can be used for the RTC, can this be used as a clock for the UART, and timer channels?  2. If I do number 1., do i use an internal clock for the SYSCLK?Many ThanksScott

Posted on January 23, 2017 at 11:35The L6480 controller charge pump frequency stops after a write to the configuration register. A pulse on the reset pin seems to do nothing at all. Is there a proper sequence to restart the charge pump frequency? How can I fix this?Controller setup:16Mhz internal clock with no output, OSCOUT, OSCIN disabledPWM frequency devision factor = 2PWM frequency multiplication factor = 1Config register value: 0x2F80

Posted on January 26, 2017 at 16:29I notice that the EVAL6472 is a 4 layer PCB.  Similarly, sparkfun has an evaluation board for the L6470 that is also a 4 layer PCB.  My question:  Is there some significance or layout best practice that requires a 4 layer PCB with the L6472 device?  Would you foresee any issues if I roll my own L6472 stepper driver board using a 2 layer PCB?#stepper-driver #l6470 #l6472 #pcb-layout #stepper-motor

Posted on January 09, 2017 at 21:58Summary of 2 days investigations for CubeMX and System WorkbenchFor success build without errors imported project generated in CubeMX, need fix generated symbolsIn Project->Properties->C/C++ Builds->Settings->MCU GCC Compiler->Symbols__weak=__attribute__((weak))__packed=__attribute__((__packed__))need set values __attribute__((XXXXX)) in double quotes - '__attribute__((XXXXX))'Sample:__weak='__attribute__((weak))'__packed='__attribute__((__packed__))'Else you can see follow errors after import23:19:10 **** Incremental Build of configuration Debug for project blink **** make all Building file: ../Src/main.c /bin/sh: -c: line 0: syntax error near unexpected token `(' /bin/sh: -c: line 0: `arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 -Dweak=attributeweak? -Dpacked=attributepacked? -DUSE_HAL_DRIVER -DSTM32F303xC -I'/Users/asergeev/stm/workspace/blink/Inc' -I'/Users/asergeev/stm/workspace/blink/Drivers/STM32F