Solved

Posted on December 08, 2016 at 09:52Hi, What are the back up register and what is the goal of these registers to wake up a device from a low power mode.Thank you very much !Have a nice day !  #backup-register #low-power-mode

Posted on November 17, 2016 at 14:54Hello, I would like to design a system with a controlled consumption in the RF side of the CR95HF. I have read different application notes and made some calculations using your Excel matching file, but still have some doubts. 1. The current can be calculated as I_tx = (VPS_TX) / (Zout + Zmatching)? 2. The datasheet says its value is between 70mA and 100mA for 3V output voltage operation. It means an impedance between 30 and 42 ohms, but the recommended is 27. Where does this 100mA values come from? 3. What is the maximum current I can drive to the antenna? 4. Should I set the operating voltage (3V/5V) via register or it is automatically set with the voltage level at VPS_TX? Thank you #cr95hf

Posted on December 08, 2016 at 04:59RM0365 (DocID025202 Rev 6) states COMP1INMSEL can be set to 101 to enable PA5 to be connected to the inverting input of the comparator 1, but in 'Figure 118. Comparator 1 and 2 block diagrams' and 'Table 102. STM32F302xB/C/D/E comparator input/outputs summary' there is no PA5, so I'm confused.#comparator-stm32f302xb

Posted on August 18, 2016 at 16:50 I have a custom board with STM32F446RE, with RTC powered by coin cell batteries. After testing 2 boards in the field for several days they stoped working and, while debugging, I realised that there a timeout in the LSE initialization: HAL_StatusTypeDef HAL_RCC_OscConfig(RCC_OscInitTypeDef *RCC_OscInitStruct) { (...) stm32f4xx_hal_rcc_ex.h : line 2257 __HAL_RCC_LSE_CONFIG(RCC_OscInitStruct->LSEState); if ((RCC_OscInitStruct->LSEState) != RCC_LSE_OFF) { /* Get Start Tick*/ tickstart = HAL_GetTick(); /* Wait till LSE is ready */ while (__HAL_RCC_GET_FLAG(RCC_FLAG_LSERDY) == RESET) { if ((HAL_GetTick() - tickstart ) > RCC_LSE_TIMEOUT_VALUE) { return HAL_TIMEOUT; // RETURNS HERE!!! } } } else (...) } This happens during my SystemClock_Config: void SystemClock_Config( void ) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct; __HAL_RCC_PWR_CLK_ENABLE(); __HAL

Posted on November 28, 2016 at 18:40First of all I suspect someone somewhere has an L476 running the USB peripheral using HAL. Maybe?From the HAL libraries - I've got several aspects of peripheral running on my Nucleo-L476RG development board. I/O, Uart, Uart IrDA modes, Encoders. A/D's...etc..  So I figured I had a fairly decent handle on the basics of what it took to get things going MSI comes up first at 4MHZSet up clock sources/frequencies until they are how you need them Enable the clock sources to the buses/peripherals as you need them Configure the pins how you need them (In/Out/ALTF/ADDF) Make any peripheral initializations and you are good to go. Usually.Using TrueStudio 6 and the the HAL 1.6 (Black Friday updated) version of the EVAL\Project\Application\USB_Device\CDC_Standalone pretty much has me fried.I have a Nucleo board which does NOT have any USB example stuff for it. The EVAL board however DOES have it - code folders/path listed above.Since 1. The nucleo board on

Posted on December 07, 2016 at 19:16Hello !I did implement a fast transmit queue successfully for serial port printing. That works well with a development board. But in my real circuit, the TX pin is driving the LED of an opto-isolator. The result is that it still works but it inserts a faulty character after each completed DMA transfer. I found why: when the transmission completes, the tx pin go to high impedance state instead of continuing to drive a 1. So the LED is not driven and it appears like a 1 on the other side. Because the print buffer is often full, the high impedance state duration is very short, 15us. With 115200 baud it looks like a valid zero while it is just the time it takes to re-enable the UART in the interrupt. I could add a fix with a pull-up resistor, but this have serious drawback in the application context. I am looking to find a firmware way to do it. This is roughly how I am using the HAL drivers:The HAL_UART_Init() is called before starting the main lo

Posted on December 05, 2016 at 21:13shield of stm32f746g discoveryshield of the idb04a1is there a solution (difficult to unsolder the resistance: can we curve or cut the pin and stripe irq csn and clk ?)Br,Christophe#bluenrg #stm32f746g-disco

Posted on November 10, 2016 at 14:38 Hi, I try to wakeup from Stop mode by using Alarm A, but it doesn't work. Anyone has any ideas? I use STM32L151VE, and my code is below. I use LSI. I see the RTC is functioning during stop mode since if I wake via power button (EXTI0) I see the RTC advanced as expected. int main(void) { /*Here goes the usual initialization stuff*/ system_flags |= RtcInit(); FLASH_SLEEPPowerDownCmd(ENABLE); PWR_UltraLowPowerCmd(ENABLE); PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI); } static void RtcClockInit(void) { /* Allow access to RTC */ PWR_RTCAccessCmd(ENABLE); #if defined (RTC_CLOCK_SOURCE_LSI) /* LSI used as RTC source clock*/ /* The RTC Clock may varies due to LSI frequency dispersion. */ /* Enable the LSI OSC */ RCC_LSICmd(ENABLE); /* Wait till LSI is ready */ while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) { } /* Select the RTC Clock Source */ RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); synch_prediv = 0x127; asynch_prediv

Posted on December 07, 2016 at 16:01Hallo!I downloaded the zip-file STSW-STM32115 entitled 'STM32F37x/38x DSP and standard peripherals library, including 73 examples for 26 different peripherals'. Unfortunately the project/example folder is missing.Can someone tell me where else I could find a working example of the STM32F373 SDADC?Thanks!

Posted on May 05, 2016 at 04:40Anyone familiar with this forum knows how truely awful SharePoint is, and how badly broken Microsoft's support/vision of mobile is. Personally I'm confused why one would need an ''app'' to properly view and interact with a WEB BASED PORTAL, but I'm a bit jaded.http://www.theverge.com/2016/5/4/11589682/microsoft-sharepoint-2016-mobile-apps Also a discussion over a Slashdot about it.https://news.slashdot.org/story/16/05/04/2216220/microsoft-overhauls-sharepoint-to-compete-with-slack-in-the-mobile-era #honor-to-whom-honor-is-due #worst-forum-software-ever

Posted on November 23, 2016 at 16:26HiFor some reason my µC is powered by 3V (instead of standard 3.3V)On the file stm32f7xx_hal_conf.h we can find some define about the board.One is ''VDD_VALUE'' and the value is 3300.How can I change this default value ? Thanks

Posted on December 07, 2016 at 05:54Hi,this is Shiva from a major automotive customer,we are using SPC58EC80E1( eTQFP 64) MC.Where can I get the datasheet and Pin out details for the above?.

Posted on December 06, 2016 at 13:59We are working on a project based on timer in which we keep facing an error : symbol _TIM1_SetCounter not defined. We have included the header files as well. Thanks in advance.

Posted on December 06, 2016 at 15:28Hi,I'm using the Bluenrg-ms chipset with firmware version 7.1.e (0x715). Everything works fine, except from the authorization settings. Each device can connect to the BLE without any request for permissions (PIN). By digging a bit I've found that the function 'aci_gap_slave_security_request' should do the job, but I don't exactly know where and how to use it (related callbacks to handle, actions to do according to the result). Can anybody help me through this?Thanks a lot,Daniele#spbtle-rf #bluenrg-ms #ble

Posted on December 06, 2016 at 09:45 Dear Sir, As we discussed earlier, difficulties on adapting project in SW4STM32 and mdk-keil, things might related to compiler, including paths, wrong pre-processors, undefined characters, unresolved items, miss-matching of slandered files/states with HAL libraries, we did not find any particular clue. https://community.st.com/thread/32323 Lets see the difficulties accordance with SW4STM32 because mdk-keil and coo-cox is failed!! (AC6, http://www.openstmorg/, https://community.arm.com, https://www.eclipse.org/ All are not usefull) Right at the moment, the error console says, arm-none-eabi-gcc -mthumb -mfloat-abi=soft -E ''-IC:\\Ac6\\SystemWorkbench\\plugins\\fr.ac6.mcu.externaltools.arm-none.win32_1.7.0.201602121829\\tools\\compiler\\bin'' ''-IC:\\STM32_toolchain\\lib\\gcc'' -IC:/STM32_toolchain/common/Drivers/STM32F0xx_HAL_Driver/Inc -IC:/STM32_toolchain/common/Drivers/STM32F0xx_HAL_Driver/Src -O0 -g3 -Wall -fmessage-length=0 -ffunction-secti

Posted on December 01, 2016 at 05:00Hello Sir, i want to ask how to add 390ns or 0.39us for dead time ?My systemclock = 64 MHzMy AHB Prescaler = 4so my HCLK = 16 MHzand because of APB1 Prescaler = 1then my APB1 peripheral clocks = 16 MHzSo, what number i should put in the dead time configuration ?Thanks a lot !

Posted on October 11, 2016 at 02:28to be migrated, sourceId: 9912:0EA5537E-3674-4A46-8D71-9B00EC9F6F4B #dual-adc #bug #stm32cubemx

Posted on November 04, 2016 at 23:12Here's a little background. I run Arch Linux, and have been using the arm-none-eabi suite and openocd since early 2013 to program STM32s, first L1s and F4s, and now L4s. Except for vector.o from the appropriate libopencm3 library, all the code was written by me. I'm simply trying to say that I'm not entirely new to STM32s.Anyway, as of this morning, I'm the unfortunate possessor of, not just one, but two, STM32L432 NUCLEOs that appear to be defunct. Both have exactly the same problem. And they didn't have it yesterday.Each GPIO port's registers contain the same number: the reset value of the GPIO's mode register. Indeed, all 256 words of the block allocated to each GPIO contains the reset value. For example, GPIOA's block contains 0xabffffff repeated 256 times.And this appears to be a permanent condition. Nothing I tried affected the problem at all. I even installed the windows ST-LINK Utility in a Vista virtual machine, and had a go with it. The re

Posted on November 15, 2016 at 11:28Hello,I am writing this post because i have a problem with UART communication. I am using à microcontroller in order to communicate with the CR95HF chip but i can't have any response even when i'm sending an echo command. However, both pins SSI_0 and SSI_1 are connected to the ground and i'm pulling down the UART_RX/IRQ_IN more than 10us after i powered up the CR95HF chip as it's written in the datasheet.I figured out a problem, my UART_TX/IRQ_OUT pin is always at 0V, but even if i link a pull-up resistor, i still have no answers.Can anyone help me with my problem? i would really appreciate.Best regards

Posted on November 21, 2016 at 13:34Hi everyone. I have an .HEX file that I would like to program in a STM8AF62A8 MCU. I load the .HEX into STVP and it seems to be flashing the memory correctly because I can see some of the application's startup output through the serial port (it does it repeatedly due to the MCU being restarted multiple times during programming, I assume). The problem is that, as soon as the process is over, the MCU stops responding and I get no serial output when I reset the MCU manually. #hex #stvp #stm8

Posted on November 10, 2016 at 17:34 Hi all, I am using an stm32f4 micro to generate a random number. I am using the RNG Driver from the stm32cubef4 library. I followed the examples but the micro is generating the same number over and over again. here is a code snippet. int main( void ) { HAL_Init(); system_init(); if (HAL_RNG_Init(&hRNG1) != HAL_OK) { DEBUG_PRINT( ''Random Number generation failed\r'' ); } if (HAL_RNG_GenerateRandomNumber(&hRNG1,code_)==HAL_OK) { DEBUG_PRINT( ''RNG initiated\r'' ); } else { DEBUG_PRINT( ''RNG failed\r'' ); } DEBUG_PRINT( ''%'' PRIu32 ''\r'' ,code_[0]); } Does anybody have a clue on what am missing. I am using the DEBUG_PRINT function to get the random value through the serial port. Best Regards Raiyan #no-hablo-hal #stm32f407-random-number-generate

Posted on July 31, 2015 at 15:25 Hello all, I have configured the ADC to trigger based on Timer 6 update event every (1/48000) seconds. DMA is used to transfer the ADC conversion to memory. However, when I debug, I see the timer count being incremented, but I don't see any ADC conversion being made or anything in the memory location where it saves the ADC values through DMA. I have used ST's CubeMX to generate the initialization code. #include ''stm32f7xx_hal.h'' uint16_t ADC3ConvertedValue = 0; uint16_t ADC_Value = 0; /* USER CODE BEGIN Includes */ /* USER CODE END Includes */ /* Private variables ---------------------------------------------------------*/ ADC_HandleTypeDef hadc3; DMA_HandleTypeDef hdma_adc3; TIM_HandleTypeDef htim6; /* USER CODE BEGIN PV */ /* Private variables ---------------------------------------------------------*/ /* USER CODE END PV */ /* Private function prototypes -----------------------------------------------*/ void SystemClock_Config(voi

Posted on April 22, 2015 at 11:01Hello,I have this ultrasonic sensor(HY-SRF05 blue): cf in attachment.I have to manage 3 of this sensors simultaneously. How? I have the board SPC560P-DISP. In datasheet there's written of to use the I2C interface or UART or SPI. But I don't know how do. There's a documentation? Thanks. Best regards, Gianluca.

Posted on November 03, 2016 at 11:22Gentlemen!I try to use chip ST95HF. I am a beginner in NFC. I need to develop Peer to Peer connection. What protocol should I use for it?I can not see of the emitted field at 13,56 MHz.I initialized of the chip to work for IEC14443B protocol (I checked of the reply � it was 0x0000). I used for test of the IDN command 0x000100 and received of the true reply - ''NFC FS2JAST4''.Then I try to send of the test sequence:0x00 0x06 0x64          0x35�.0x35 (0x35 � 100 times).I did not receive of the true reply (0x0C 0x00 instead of 0x00 0x00) and I did not see any field (I use a good receiver and tested of the SF95HF output by scope).Could you help to understand of my error? #st95hf

Posted on October 28, 2016 at 09:13Hi. I've generated a project using Cube, but the Drivers directory is void (it has subdirectories but any file), and then the project is full of errors. I've attached the project. The project properties are: - STM32F769I-DISCO board - Enable SD 4 bit wide bus And the generate it. (I know it has a clock error). Cube version 4.17.0 STM32Cube v1.0 STM32Cube_FW_F7 V1.5.1 If i select FW package STM32Cube_FW_F7 V1.5.0 then it copies all the files. Is this a bug or I'm doing/I have something wrong?