Solved

Posted on November 28, 2016 at 17:59Hi everybody,We are using LIS3DS0 on the ISK01A1 board monted on a Nucleo F103-RB...Our software is based on HAL drivers (got in the cube).We met this strange issue in some of our boards (we confirmed the test with many students and dozens of boards):1- we plug the board2- the accelerometer failed to initialize. (due to the WHO_AM_I register which is 0xD4 instead of 0x68).We can reset again and again our STM32, without any change.Then we program a flush of registers of the LIS3DS0.We confirm the registers seems to correspond to another component (L3G3200D) !(WHO_AM_I of 0xD4, )But, when we do the following steps, the component run well :1- plug the board2- -> fail to initialize3- get off the JP2 jumper4- ensure temporarly 0V on the Vcc of sensor (with wire) (to avoid a 2V power by I2C bus)5- get on the JP2 jumper-> It works!We can reset our STM32, it works each time.Any idea????!!!Thanks! #lis3ds0-iks01a1-initialize-fail

Posted on December 14, 2016 at 09:50Hi Everyone !I am using  SPWF01S wifi module.I would like to assign static IP for my module, so that my module will have same IP address even when connected with different networks.I used the following AT Commandsat+s.scfg = ip_use_dhcp,0at+s.scfg = ip_ipaddr,172.10.10.50at+s.scfg = ip_netmask,255.255.255.240at+s.scfg = ip_gw,172.10.10.1at+s.scfg = ip_dns,172.10.10.1when I use the above commands the module is allotted with static IP but SOCKET connection is not happening but when I use 'ip_use_dhcp,1' then everything works fine.Help me to solve this issue.

Posted on December 14, 2016 at 13:59Hello everybody I am using stm32f030F4 in my project and  i need a timer with frequency 200kHzI set timer1 for this frequency and  toggled a pin in timer callback function  and watch with oscilloscope i can see a signal with frequency 100kHz this is ok so far but when i made some additional operations like toggle another pin the interrupt frequency speed droping about 4kHz if i add one more toggling  it is dropping about 40kHz And i tried to make it with flag and do the operations in while loop but it is also droping so i cant make the system work stable.i am using stmcubemx to create project and i set timer and others clock 48 MHz my timer configuration is like that:htim1.Instance = TIM1; htim1.Init.Prescaler = 0; htim1.Init.CounterMode = TIM_COUNTERMODE_UP; htim1.Init.Period = 239; htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim1.Init.RepetitionCounter = 0;I really need your helps.Maybe i am missing

Posted on December 14, 2016 at 17:02I registered for the nfc online course, but the invitation is required to participate in the course. I have not received an answer yet, despite requesting an invitation. Do I need special conditions to receive an invitation?#online-nfc-course #event

Posted on December 11, 2016 at 11:25HI All,I am wondering why initial code size differs with a factor of 3 between the STM32F031K6 and the STM32L031K6 - just for making an LED blink.I use CubeMx to generate the project and GCC (OpenSTM32 AC6 IDE) to compile it. In CubeMX I select the Nucleo-F031K6 and the Nucleo-L031K6 and click the 'Initialize all peripherals with their default mode'. Then I leave everything as default, just enough to make the LD3 blink (PB3).Compiling the project without any modification gives me the following code size:== STM32L031K6 ==arm-none-eabi-size 'TEST-L0.elf' text data bss dec hex filename 12504 12 1684 14200 3778 TEST-L0.elf== STM32F031K6 ==arm-none-eabi-size 'TEST-F0.elf' text data bss dec hex filename 4536 12 1684 6232 1858 TEST-F0.elf== Question ==Why this huge difference in code size between the L0 (12,5 KB) and the F0 (4,5 KB) ?Kind regardsAnders

Posted on December 14, 2016 at 00:57I see that SystemClock_Config(void) is generated, and shows the PLL divisions but it doesn't show anything about the actual clock speeds. Ultimately I'm trying to determine the speed of my ADC sampling but I'm having to work backward as I inherited code from somebody else where all the clocks were set already.Thanks! #clocks #discovery #cubemx #stm32l476vg

Posted on December 13, 2016 at 19:27I am trying to implement such an algorithm on Stm32f4-discovery: Initialize the DMA and Tripple-ADC in the interleaved mode on the same channelWait for an external interruptSuspend the DMA and ADCsSend the buffered data through USARTResume DMA and ADCsClear interrupt flag, goto 2The DMA is working in circular mode, not burst, direct mode, peripheral (ADC) to memory, single memory address, second DMA mode (waiting for two measurements, sending a uint32_t to memory).The problem is that DMA (or ADCs?) does not always restart after suspending. In about 16% of cases DMA NDTR register keeps being stuck at buffer_size - 2 (so it has written just one measurement and stopped) after the interrupt until the next external interrupt, where it is suspended and restarted again.I've tried suspending DMA just like the Reference manual says:In order to restart from the point where the transfer was stopped, the software has to read the DMA_SxNDTR register after disabl

Posted on December 12, 2016 at 00:44I am using the STM32F469 on three devices. One device works fine and starts normally after the power is applied. The other two only start operating after the nRST pin is briefing pulled low. There is 3.3V on nRST after powering it up, indicating the power on reset is ok, but the micro fails to start running.Attaching the STM debugger and checking the MCU core it says it is halted. Clicking run starts the device working.What could cause the device to power up correctly but not start the program running?

Posted on December 06, 2016 at 14:00Hi community! Jan Here, Cezch Republic. I am working on my project where i need to process audio for further uses. My first step is obviously get my data from mic. I have decided to use the MP45DT02 MEMS mic that is present on my stm32f4 discovery board. I have already successfully got working example (Audio_playback_and_record). I used that example to help me understand basics of .wav and also pdm lib. I have also observed settings necessary for setting up i2s2. I replicated those settings using CubeMX and created project. Now i am facing following problem:I never receive interrupt when debugging ( SPI2_IRQHandler(); is never called). So what am I missing? I have thoroughlly read through comments at stm32f4xx_hal_i2s.c librarry. I believe most of the actions (settings) were actually made by CubeMX so i dont need to do anyting. I would expect i2c start generating clock for the MEMS mic and i would expect pdm stream to start

Posted on December 12, 2016 at 15:00I'm currently using the STM32F051R8T6, 64 pin LQFP.  Is the STM32F091RCT6 in the same package fully pin-compatible?Thanks,Paul♯♯♯#stm32f091 #compatible #stm32f051

Posted on December 09, 2016 at 20:51Hello, I am working on a design on stm32f407vgt6 which I don't want to use the ADC & DAC so I don't have to connect the circuit of ADC and leave VDDA&VSSA&VREF floating?#clive1

Posted on December 09, 2016 at 13:22Hi,I'm working with M24LR64E and trying to read/write to M24LR64E from MCU PIC16F1513 by I2C but it didn't work. I try to search any code examples but i can't find it, so if anyone have the experiment or the code example, please share it for me.Thanks.Regards,

Posted on December 12, 2016 at 16:23Question - What is the safest way to 'peek' at the STML152 program counter? Ideally something in the standard HAL files (so no ASM; I am working under AC6 in C). I wish my code to understand if it was loaded/is running in the lower 1 of 2 flash banks (? PC < 0x8004000), or in the upper 2 of 2 banks (PC > 0x8004000).Background - this is a kind of dual boot issue, but not really. The L152 has 512K flash in 2 x 256K banks and we plan to load 2 similar images in the two 256K banks. We'll always boot from the lower bank image, but wish to load field fw upgrades into the upper bank image, understanding that the reflash might fail & need to be erased completely. The upper bank will be re-written by our own code (FW read from a special secure SPI token), and that loading code will be linked to load/run from the upper bank only. The goal is to treat the lower bank as a 'factory default image', and the upper bank as a 'field written & perhaps br

Posted on November 23, 2016 at 06:35Hello NFC support,We got 8700 : Frame wait time out OR no tagwhen using CR95HF to send APDU command 0xA4 to a 14443B tagwhat's possible cause and how to fix it?Thanks alot in advanced #cr95hf-14443b-reqb-attrib #cr95hf-iso14443b

Posted on December 12, 2016 at 07:06Hi, this is siva sankar chandika from Embitel technologies from bangalore please help me to choose SPC584C70E3 microcontroller in spc5studio chorus 4M family.Thanks in advance.Looking forward for your response.Regards,SIVA SANKAR CHANDIKA,Contact No:(+91)9742655613.

Posted on December 09, 2016 at 09:39I have designed two different data acquisition boards with STM32F407 MCU. Everything is OK. Now I would like to customize the USB CDC driver. I changed the MFG name in the .inf file provided by ST. This works in Win7 nicely (But not in Win 8, I think because of the digital signature file.)Now when I connect both boards to one PC, some problems happen. As I know each USB device should have a VID and PID. VID should be bought from usb.org and it is really expensive. But we can use the VID of ST chips. Is it possible to change the PID of my product to avoid confusion in this situation?Has anyone any similar experience?Thanks in advance.#usb #pid #driver #vid #cdc

Posted on November 29, 2016 at 17:45 Hello, I'm trying to connect stm32f4-discovery with Android phone supporting otg through USB virtual port. The microcontroller should work as device and smart phone will be the host. I used CDC library on stm32f4 side and do I need driver for Android to communicate via USB? because when I connect stm32f4-discovery with phone I cann't send or receive any thing, moblie even doesn't feel that I have connected the kti with it! Thanks in advance

Posted on December 09, 2016 at 13:01Hi!I want to put my STM32F4 in StandBy mode for more then 36 hours.At the moment I use the RTC wakeup interrupt but the maximum time is 0x1FFFF seconds (36 hours).Is this possible to set a greater value?regards Marc

Posted on December 07, 2016 at 15:40I am writing an application in C# that AES-encrypts some data that is then decrypted inside an STM32 using STM32 Cryptographic Library. My C#-class (https://msdn.microsoft.com/en-us/library/system.security.cryptography.rijndael(v=vs.110).aspx) can encrypt using different types of padding (ANSIX923, ISO10126, PKCS7 and with zeros). I have not found a way to specify the padding for the function in the STM32 Cryptographic Library.Right now, my decryption fails because of padding-issues.I use AES 128-bit, CBC-mode.What padding is used in STM32 Cryptographic Library?How to I change the padding mode?Thanks

Posted on December 06, 2016 at 01:57 Dear All, I want to have attention those who has experience on using coo-coox, I am writing here because coo-cox forum does not respond for successful logon. My board is custom one build with centered 32F070RBTx, The version is CooCox CoIDE Version: 1.7.8 Along withGNU Tools ARM Embedded\4.7 2012q4\bin, the following errors take place , [cc] arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -Wall -ffunction-sections -g -O0 -c ''-DC:\Program Files (x86)\GNU Tools ARM Embedded\4.7 2012q4\bin'' -IC:\STM32_toolchain\Workspace\Source_bak\cmsis_boot - [cc] from C:\STM32_toolchain\Workspace\Source_bak\common\Inc/stm32f0xx_hal_conf.h:184, [cc] from C:\STM32_toolchain\Workspace\Source_bak\common\Drivers\STM32F0xx_HAL_Driver\Inc/stm32f0xx_hal.h:48 [cc] C:\STM32_toolchain\Workspace\Source_bak\components\coocox-master\cmsis_core\source/core_cm0.h:214:14: error: 'Program' undeclared here (not in a function) [cc] C:\STM32_toolchain\Workspace\Source_bak\component

Posted on September 22, 2016 at 04:21I recently completed a Seminar about the Cortex-M7 and when I got home, I updated my ST-Link Utility from 3.8.x to 4.0.0.0. The earlier version worked, the new version crashes every time I try Target -> Connect. I also, did an ST-Link Firmware update and it still crashes. Any ideas? #st-link-crash-v4.0.0 #st-link-windows-10-crash

Posted on December 08, 2016 at 11:38Hello,Using current HAL-software generated with cubemx on stmf4_discovery board.I use TIM7 as an interrupt generating timer, set at say 100 msec.In the ISR I do:    i = HAL_GetTick();    delayms(12);    tt  = HAL_GetTick()-i;where delayms is a busy waiting loop (normally our application code would go there).And tt is a global int.I would assume that tt would normally be something like 11, 12 or 13.But it is always 0.The (default) interrupt priority of TIM7 is much lower (higher number) than Systick, so why isn't the system tick not updated in that 12 msec?Or am I missing something?

Posted on December 08, 2016 at 09:42Hi,I'm trying to wake up my device from the sleep mode and i'm asking this question : What's the difference between BUTTON MODE EXTI and BUTTON MODE GPIO ? Thank you ! Have a nice day ! 

Posted on December 08, 2016 at 10:45Hello,We are designing a new product around the STM32L081, in reading the reference manual : http://www.st.com/content/ccc/resource/technical/document/reference_manual/21/bd/0f/bd/1c/88/40/f0/DM00108282.pdf/files/DM00108282.pdf/jcr:content/translations/en.DM00108282.pdf,We have two tables concerning the boot mode which are not giving the same mode for BOOT0 ; BOOT1 combination.In the chapter 2.4 Boot Configuration, And in the chapter 3.3.2 Dual-bank boot capability,We have the following table discribing the different Boot Mode in Dual BankThe two tables are telling opposite information concerning the boot mode regarding the value of BOOT0 and BOOT1, for Embedded RAM and System Memory booting.Which table has the corrects values or did I miss something ?Thanks,Sylvain

Posted on December 07, 2016 at 14:04 Hi everyone, I'm working on a project and i'm a beginner on STM32F0. I have the discovery board. I have the code at the bottom of the page but i don't understand many parts of it... In this code i have the following question : What's the difference between this instruction BUTTON_MODE_GPIO and this instructionBUTTON_MODE_EXTI. There is someting with the interruptions... I don't really understand. When the button mode is exti, when i press the user button, I generate an interruption ? And when the button mode is GPIO what happens ? It's a bit difficult for me ... Normally, it works like that : ''After reset, the program waits for User button connected to the PA.00 to be pressed to enter the selected low power mode. '' In the below code, it's the SLEEP MODE. ''- When the RTC is used, the wakeup from low power mode is automatically generated by the RTC (after 5s). '' useffull for the STOP MODE ''- In Sleep mode and Standby mode, pres