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Posted on September 04, 2017 at 15:18Hello, I need small clarifications about  .data section placement in the STM32F446x mcu. Let say i have a global array in the program and if i run the program on MCU, The arry can be located at 0x20000000 address onwards . How did that array came to that location ? I dont see any code in my project (built using KEIL) which copies data section from flash to SRAM. and as far i know, code region will be mapped to flash memory and not to SRAM. Can anybody please help me to understand how did .data section moves from flash to SRAM ? is it done through sofware or hardware remapping ? Thanks#stm32f4 #stm32f466

Posted on September 07, 2017 at 12:20HelloI can not find STM32 Flash loader demonstrator 'command line' version  at this location . this folder contains only gui version .. Thanks . http://www.st.com/en/development-tools/flasher-stm32.html 

Posted on September 07, 2017 at 07:13Hi I'm currently working with STM32F429I-disco kit.and testing about gpio control.the below code is working well.But I want to know int main(void){RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE); // GPIOG->CRL = 0x2800;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 ;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;GPIO_Init(GPIOG, &GPIO_InitStructure);&sharpusing ODRwhile (1){ if(GPIOA->IDR & GPIO_Pin_0) GPIOG->ODR =GPIO_Pin_14;else GPIOG->ODR = 0x0

Posted on September 07, 2017 at 11:42HiI want to know, what is the difference between stmcube and SPL? Has SPL replaced by stmcube? or stmcube is something above the SPL? cause I think there is another thing called HAL library!Also, when I want to use CMSIS-Core I should use which one of them, If I like to have low level access to registers? I have stm32f40vg discovery board that I bought 4years ago, and like to use CMSIS-Core for programming, but I understood SPL is outdated and not supported for now! So what is the alternative for SPL? Or can I use SPL yet?

Posted on September 07, 2017 at 18:02I want to know more about hardfault.1-)Is there any documentations about hardfault on stm32f415 microprocessor?2-)Why does Hardfault occur(all reason)?3-)Are there any difference between the processors(for example stm32f373 and stm32f415) when it occur HardFault?4-)Can I send my processor in code to the previous statement when hardfault occur and go to the command somewhere which is safe?#hard-fault

Posted on March 11, 2015 at 14:07Hi,I'm developing an I2C driver for a SPC560B54L5 micro, and I have problems generating the stop bit.At the end of a write operation, I run the following pseudo code:   while  (0 == IBSR. IBIF) { /* wait */ }   IBCR.MSSL = 0 /* generate stop bit */   while (1 == IBSR.IBB) { /* wait */ }After a few successful transfers (including the stop condition and return to idle), the driver gets stuck while waiting for the IBB bit to return to 0.I monitored the SDA and SCL signals: some times the Stop condition is not generated, and some other times the Stop is generated but IBB does not drop. The I2C is run in Master mode, and interrupts are disabled.Also, when I run the driver in step-by-step debug, the problem appears after a few frames are sent (including Stop condition and return to idle).The problem appears on the first frame when I run the driver without stopping the CPU.Could you please help me find why the stop cond

Posted on September 02, 2017 at 22:41Hello:I have been fighting with this accelerometer for a couple of months and it has now become imperative that I get it functioning.I am using it with an STM32F405 controller. I have it set up in interrupt mode. When I get an interrupt, I read and process the X,Y,Z registers but the values are always (or almost nearly)  the same: -20, -3, -6.I have absolutely not a clue what is going on. Can anyone please help me with this? Here is the code to process the data after the interrupt. Directly below is the call to SPI read that the handler usesuint8_t SPI_read(uint8_t address){  GPIO_SetPinLow(GPIOD, ACCHI_CS);   address = 0x80 | address;   // 0b10 - reading and clearing status    while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_TXE) == RESET);   SPI_I2S_SendData(SPI3, address);  while(SPI_I2S_GetFlagStatus(SPI3, SPI_I2S_FLAG_RXNE) == RESET);  SPI_I2S_ReceiveData(SPI3);   while(SPI_I2S_GetFlagS

Posted on August 31, 2017 at 09:46Hi guys, may some expert please help me? I am new to stm8l. I am currently using the chip stm8l151k4t6. I have connected battery voltage to pin D7, purpose of it is that i wanna monitor the status of the battery while the device is ON. However, my Lcd display keep giving me same value(4095). Where did my code goes wrong ? below are my codes. ADC_DeInit(ADC1);  ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_4Cycles); ADC_SchmittTriggerConfig(ADC1, ADC_Channel_7, DISABLE); ADC_ChannelCmd(ADC1, ADC_Channel_7, ENABLE); ADC_Init(ADC1, ADC_ConversionMode_Continuous, ADC_Resolution_12Bit, ADC_Prescaler_1);  ADC_Cmd(ADC1, ENABLE);  ADC_ExternalTrigConfig(ADC1, ADC_ExtEventSelection_None, ADC_ExtTRGSensitivity_All); ADC_SoftwareStartConv(ADC1);  while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));  battery = ADC_GetConversionValue(ADC1); My lcd keep giving me 4095, which is (2^12) -1. 

Posted on September 05, 2017 at 18:43Hi.I've done set up the \STM32F4xx_DSP_StdPeriph_Lib_V1.8.0 with keil and  think the flash download works good.So I'm trying to implement GPIO_IOToggle test with STM32F4xx_DSP_StdPeriph_Lib_V1.8.0's  template project After compile, there is no error and I've uploaded to flash my firmware.But LED does not work. I think there are some mismatch between STM32F429-disc1 kit and STM32F4xx_DSP_StdPeriph_Lib_V1.8.0's GPIO declaration.STM32F429-disc1 ki  have just 2 leds  and it's connected PG13 and PG14. but there is no PG13 and PG14. main code is the following.the original code isint main(void){RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE); GPIO_InitStructure.GPIO_Pin = LED1_PIN | LED2_PIN; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(GPIOG, &a

Posted on September 06, 2017 at 10:11Hello I  use STDPERIPH_DRIVER .I want Counting a pulse and when it arrive to special number (100 Rising edge) I get an interrupt.How can i do that?I do somthing like that TIM_ICInitStructure.TIM_Channel = TIM_Channel_4; TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1; TIM_ICInitStructure.TIM_ICFilter = 0x0;TIM_ICInit(TIM3, &TIM_ICInitStructure);TIM_ITConfig(TIM3, TIM_IT_CC4, ENABLE);TIM_Cmd(TIM3, ENABLE);void TIM3_IRQHandler(void){if (TIM_GetITStatus(TIM3, TIM_IT_CC4) == SET) { TIM_ClearITPendingBit(TIM3, TIM_IT_CC4); time_counter++; if (time_counter == 100) {} }It work but when i use some mcu they wrok synchronization but after 7 or 8 hours they are not synchronization  and have  random delay between them.

Posted on September 05, 2017 at 16:11Dear All,Currently I've just got a STM32F429ZIT6 Discovery kit from ST.Q1. I'd like to exam the simple gpio firmware into my kit. So I open the STM32F4xx_StdPeriph_Templates  project in Keil. But I come across the below error message when I run STM32F4xx_StdPeriph_Templates project in MDK...\stm32f4xx_conf.h(36): error:  &sharp5: cannot open source input file ''stm32f4xx_dbgmcu.h'': No such file or directoryDoes anyone know how to resolve this ?Q2.And I'm wondering how do i activate the ''startup_stm32f429_439xx.s'' in the Keil?I think I have to activate the startup_stm32f429_439xx.s file not startup_stm32f446xx.s within STM32F429ZIT6 Discovery kit .#getting-started #stm32f429-discovery

Posted on September 05, 2017 at 14:03Hi,I've just got a STM32F4 Discovery kit (STM32F429)I thought that it embedded software for demonstate at the first time.But my kit does not work.I also I read the below instruction.But I don't know should I have to re-fund this kit?What am I missing?Getting started Follow the sequence below to configure the STM32F429 Discovery board and launch the DISCOVER application: 1. Ensure that the jumpers JP3 and CN4 are set to 'ON' (Discovery mode). 2. Connect the STM32F429 Discovery board to a PC using a USB cable type A/mini-B through the USB ST-LINK connector CN1, to power the board, the LEDs LD2 (PWR) and LD1 (COM). 3. The following applications are available on the screen: – Clock/Calendar and Game – Video Player and Image Browser (play videos and view images from the USB mass storage connected to CN6) – Performance monitor (watch the CPU load and run a graphical benchmark) – System Info 4. The demo software, as well as other software examples

Posted on September 05, 2017 at 17:33Hi !I am currently designing a test plan for my software/hardware application. During the tests, I need to know if the ADC is functionnal and correctly calibrated.We have an idea to test it with an hardware solution which is using a multiplexer to apply a Reference Voltage to the ADC Pin when we ask for it and verify the digital value returned by the ADC.Using a STM32L4, do you know another (better) solution without specifics hardware configuration to test ADC ? Thanks a lot,Best regards.#self-test #adc #stm32l4 #calibration-stm32

Posted on February 13, 2017 at 11:52I am using STM32CubeMX Version 4.16.1 on a pc without(!!!) internet access.I would like to install a new library via 'Menu'/'Help'/'Install New Libraries'/'From Local...'.I have downloaded the firmware package for family STM32F4 (Software Version 1.14.0) ===> 'en.stm32cubef4.zip'When i try to install this firmware package by pressing the 'From Local...'-button and by selecting the downloaded zip-file 'en.stm32cubef4.zip',i receive the following error message 'This package version is not managed on this version of STM32CubeMX'.Anything i can do about this?I tried to download the firmware package for family STM32F4 in an earlier version (for example 1.13.0) but i could notfind it on the internet.Any help would be greatly appreciated

Posted on September 05, 2017 at 00:08The datasheet shows that setting the D4D_EN bit to 0 enables 4D orientation detection, however in AN5040 in section 5.4.2 it states the opposite.  Also at the end of section 5.4.1 it shows steps to enable 6D detection, including setting TAP_THS_6D to 0x40 (leaving the D4D_EN bit low).  Which of these is correct, app note or datasheet?  I would be inclined to trust the datasheet over the app note, except using 0 to enable the bit as shown in the datasheet sounds like it might be wrong.

Posted on August 30, 2017 at 19:09I am trying to test the magnetometer on LSM9DS1 sensors.Can I apply the same self-test range-values than the LIS3MDL compass to check the LSM9DS1? The fact is that the magnetometer in the LSM9DS1 seems to be a LIS3MDL (same documentation of the registers). I am using the http://www.st.com/resource/en/application_note/dm00136626.pdf, where the self-test procedure is explained in page 19, with self-test ranges indicated in table 17.I already implemented a self-test procedure for the LSM9DS1 and I obtained for one sensor on which I suspect a problem the following values:Average_X_self_test - Average_X_no_self_test = 2551 (no scale) = 0,93 gaussAverage_Y_self_test - Average_Y_no_self_test = 2682 (no scale) = 0,98 gaussAverage_Z_self_test - Average_Z_no_self_test = -415 (no scale) = -0,15 gaussAnd for a second sensor that seems ok, the values are:Average_X_self_test - Average_X_no_self_test = -4476 (no scale) = -1,64 gaussAverage_Y_self_test - Average_Y_no

Posted on September 04, 2017 at 22:25Hi Folks,I'm relatively new to the STM32 universe so please the giggling to a minimum.I set up the TIM21 to output a 60Hz signal and with an ON time of 3000 ticks x 32 x 1/8MHz = 12.0mshtim21.Instance = TIM21;htim21.Init.Prescaler = 32;htim21.Init.CounterMode = TIM_COUNTERMODE_UP;htim21.Init.Period = 4000;htim21.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;Hooking up my scope I measure the output waveform as period = 16.5ms and ON time = 12.33ms which gives a frequency of 1/0.0165 = 60.6Hz.  This is pretty close to the 60Hz it should be.  The question I have concerns reading this signal using the PWM input method.I'm using TIM2 and channel 1 to read the PWM signal.Here's my code for setting up the TIM2: htim2.Instance = TIM2; htim2.Init.Prescaler = 16; htim2.Init.CounterMode = TIM_COUNTERMODE_UP; htim2.Init.Period = 0xFFFF; htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; sSlaveConfig.SlaveMode = TIM_SLAVEMO

Posted on September 04, 2017 at 15:45Hi.I bought 2 eval boards STM32F429I-DISC1 and STM32F10x-DISC1 and found STM32F10x_StdPeriph_Lib_V3.5.0 of  STM32F10x.But  I'd like to get STM32F4x SPL file not en.stsw-stm32054.zip STM32F10x_StdPeriph_Lib_V3.5.0.I'm wondering is there STM32F4x SPL not STM32F10x_StdPeriph_Lib_V3.5.0 ?Otherwise, should I have to use STM32F10x_StdPeriph_Lib_V3.5.0 instead of  STM32F4x SPL for developing STM32F429I-DISC1?#stm32f4x-spl

Posted on September 03, 2017 at 14:38 Hello, I use HAl_Flash driver on STM32L152RBT6 to read, write and erase internal flash memory(EEPROM). when i try to write new data to flash, thatbitwise OR with previous value. ( E.g. at address 0x08007000 pre-save =(int) 5, data =(int) 16 stored-value = (int) 21) so i need to erase at the specified address before try to store new data on it. In datasheet clearly explained how can erase a word (unsigned int ** 4Byte). Data EEPROM word erase This operation is used to erase a word in Data EEPROM. To do so: Unlock the Data EEPROM and the FLASH_PECR registerWrite a word to a valid address in data EEPROM with the value 0x0000 0000This activates an erase phase code: uint32_t Address = 0x08007900; HAL_FLASH_Unlock(); HAL_FLASH_OB_Unlock(); *(uint32_t *)Address = (uint32_t) 0x00; HAL_FLASH_OB_Lock(); HAL_FLASH_Lock(); �?�?�?�?�?�? but it doesn't work. if i set ERASE and PROG bits whole the page(256Byte) will be erased! SET_B

Posted on September 02, 2017 at 20:14 What is the idea that in many cases alternate function inputs are configured as 'alternate function push-pull'? In most cases it seems to work, but why? From the documents I've got the idea that the inputs are always going to the alternate function and the 'alternate function' output mode affects only the output drivers. Whether or not the alternate function actually reads the inputs, is a different story. Like: /**SPI1 GPIO Configuration PA5 ------> SPI1_SCK PA6 ------> SPI1_MISO PA7 ------> SPI1_MOSI */ GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF5_SPI1; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); The picture in most manuls is like this:

Posted on August 28, 2017 at 13:19Hey guys! I'm trying to write custom firmware for http://www.st.com/en/motor-drivers/stspin32f0.html and I'm desperately stuck :( STSPIN32f0 is a system-in-package based on STM32F031C6. My code works fine on STM32F031C6. My code fails miserably both on my custom STSPIN32f0 board and on http://www.st.com/en/evaluation-tools/steval-spin3201.html.What I'm trying to achieve is pretty simple: I configure TIM1 in 6-PWM mode. On STM32F031C6 I can see 6 signals exactly as expected, on STSPIN32f0 I can see nothing.Does anyone have experience with STSPIN32f0 please? Can anyone please give me any hint(s)? Can anyone please share their working code samples?

Posted on September 01, 2017 at 04:23Hi,I'd like to buy STM32F429I-DISC1 kit for study. but I can't find STM32F429I-DISC1's specification what I mean is such a memory map and detail connectives information with memory map. How do I get STM32F429I-DISC1's detail connectives information with memory map?Should I have to just guess with general information from http://www.st.com/content/ccc/resource/technical/document/datasheet/03/b4/b2/36/4c/72/49/29/DM00071990.pdf/files/DM00071990.pdf/jcr:content/translations/en.DM00071990.pdf? Or can I find STM32F429I-DISC1's detail specification to fit by itself?#memory-map #stm32f429i-disc1

Posted on July 21, 2017 at 15:49 Hi all : I am using the STM32L4xx Stm Cube drivers for AES-256 ECB encryption on the STM32L4 Although the encrypted data comes out perfectly, the decrypted encrypted data is not the original plaintext. To be clear: I am not using the X crypto library, but instead the https://github.com/labapart/polymcu/blob/master/Device/ST/STM32L4xx_HAL_Driver/Inc/stm32l4xx_hal_cryp.h and https://github.com/labapart/polymcu/blob/master/Device/ST/STM32L4xx_HAL_Driver/Inc/stm32l4xx_hal_cryp_ex.h modules that are included in the from the STM Cube STM32L4xx HAL Drivers. Some info about the code: -The MX_AES_Init function uses HAL_CRYP_Init to initialize the AESmodule - I am using this API to encrypt and decrypt data: HAL_CRYP_AESECB_Encrypt_IT -After the encryption, I deinit the AES module change the operating mode to decrypt and re init using the HAL init function - I tried setting the original operating mode to decrypt and feeding in the encrypted output, but I

Posted on August 03, 2017 at 20:25Hi,   I am building an application using an STM32L4 and a BLUENRG-MS.  I have an GATT server application that can happily connect and ping pong messages with a GATT client.  The client sends a ping on one characteristic, and my application sends a response on a different characteristic by doing a characteristic update.  After a while it seems that something changes on the client, and the characteristic update call leads to a hard fault on the STM32L4, while it is deep within the BlueNRG stack.  Can someone tell me what is happening?  Is there a way to tell if a characteristic is ready to be updated before actually doing so?  Is there a known issue in the BlueNRG stack that leads to hard faults?Ricardo

Posted on August 30, 2017 at 18:18I came from using LSM9DS0. I'm a bit confused about how does the FIFO work for gyro and acc in 9DS1. It seems that the FIFO control register only allows me to set 1 watermark/threshold value. Does that mean it applies to both gyro and acc? 9DS0 allows me to set different thresholds for each sensors. I'm a bit confused about how to setup the interrupt service for the FIFO. In 9DS0, gyro fifo interrupt can be set directly on DRDY_G pin and the acc fifo interrupt can be set on INT1or2/XM pin. In 9DS1, I can't really tell from the datasheet which sensors is being set on INT1_CTRL and INT2_CTRL. Does enabling the INT1_IG_G  set the gyro interrupt in INT1_A/G pin and automatically set the acc interrupt on to INT2_A/G?#lsm9ds1