Solved

Hello, I'm using the STM32746G Discovery Board to familiarize myself with the ST environment. Now I simply wanted to store a 32Bit value in the RAM, and had several problems with the Cube BSP drivers. I tested the functions with the following code: #define SDRAM_OFFSET ((uint32_t)0xC0100000)   for(uint32_t i=0; i<0x10010; i++){ BSP_SDRAM_WriteData(SDRAM_OFFSET+i*4,(uint32_t *)&i,1); } for(uint32_t i=0; i<0x10010; i++){ testarray[i]= 0; } for(uint32_t i=0; i<0x10010; i++){ if(SDRAM_OK != BSP_SDRAM_ReadData(SDRAM_OFFSET+i*4,(uint32_t *)(&testarray[i]),1)){ testarray[i] = 111111; } }In the debugger it then looks like this:Sometimes the transfer works. Sometimes the higher bits are incorrect.How do I use the function to make it work? Further I could not find out which SD-RAM area is used by the LCD driver. Which area can I overwrite without worrying about disturbing the display functions? Unfortunately I could not read this out of the code.

Dear all,I have a board with only the STM32F765VIT6 and I program through the stlink with a power supply of 3.3V (.At start of program i tried HAL_PWR_EnterSTANDBYMode() to get 3.5uA with success if before i disable overdrive with HAL_PWREx_DisableOverDrive()HAL_PWR_EnterSTOPMode(POR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI) to get 200uA without success whatever i try to disable (Prefetch, overclocking mode with underdrive, voltage regulator)Like i have any connected pin, i did not configure pin to analog input like adviced in AN4749.I have got still 5mA, any default configuration help will be pleased.Thanks,

Hello,I wonder if I use the internal pullup resistor on an STM32F4 on an open-drain output, if the MCU is reset with the line NVIC_SystemReset(), does the internal pullup resistor with open drain output will still be seen by another IC connected to this pin ? Will it still be configured as open drain with pullup during and after reset ?Thank you

I receive some data from a terminal. Say I send 1234 on the terminal.I set a break point onvoid EP3_OUT_Callback(void){ packet_receive = 1; Receive_length = GetEPRxCount(ENDP3); PMAToUserBufferCopy((unsigned char*)Receive_Buffer, ENDP3_RXADDR, Receive_length);}But I see that every char copied on the first index of the buffer.I see Receive_Buffer[0] = 1Receive_Buffer[0] = 2Receive_Buffer[0] = 3Receive_Buffer[0] = 4Also in PMAToUserBufferCopy I see the first argument's address is incremented.What do I miss?

I am looking at the code here that has the algorithm for producing the device serial number reported when the MCU is in USB DFU mode.https://github.com/libopencm3/libopencm3/blob/master/lib/stm32/desig.cThe document they reference there, https://my.st.com/52d187b7, is now a dead link. Does anyone have the name of the document and its current location?

I am trying to initialize my external SRAM before the main loop runs. Using the STCubeMX it generated the code for me to have me FMC controller initialized after Hal_init() and Hal_GPIO_Init() in Main.c. However, I need the SRAM to be initialized before this. Doing some research I found that there is a SystemInit_ExtMemCtl() function inside System_init in STM32F4xx.c but I do not seem to have this function in the L4. Any guidance or example for doing this would be greatly appreciated!

Hello, we're using the microcontroller STM32F302C8 and we have a problem with the PLL.The problem is when we enables the PLL the microcontroller is reset. We have made several tests using HSI and HSE, but always the same result, a reset after to enable the PLL.If we use the Sysclock directly from HSI or HSE the microcontroller works fine.We check this with several boards and we're using the SDK 19.1 and 1.10.0 with both options HAL and LL.Does anyone know what the problem could be?Thanks & regards

How can i forward data which i received at my COM Port via USB FS to a UART of my Choice?I already send data to UART5 and i measured it with an osci and its workinghar buffer[] = "TEST"; HAL_UART_Transmit(&huart5, buffer, sizeof(buffer), HAL_MAX_DELAY);So How can i forward data from VCP received in a Terminal to any UART?

As of Monday 2019-01-14 my Atollic 9.1.0 IDE has stopped working with Microsoft Devops as the cloud repo. I use the Microsoft TEE Eclipse plugin from Github, latest version. It's worked very well for the last three months, uploads, downloads, etc. Atollic projects are mapped through workspaces to coresponding Devops project and repo.The TEE plugin in the Atollic IDE no longer connects to the cloud using access token, although I can login to Azure using the generated token from Eclipse/TEE. Does anyone else use this particular repo setup, and is their cloud connection still working? I suspect corporate IT has changed cloud settings regarding access tokens to authenticate to the Azure cloud. IRequests to the company devops admin are unanswered. I'm hoping some other STM32/Atollic/Devops user can confirm it's my problem and not something Microsoft or Eclipse related. Jack Peacock

I am using x-nucleo-nfc03a1 on the nucelo-f446re board and i can't figure out why i keep getting a NAK value of 04 when trying to use sendrecv function. cr95hf's is always response: 90 4 4 24 0 0.0A is defined in documentation as ACK and 00 as NAK and everything else falls under NAK, but i can't find any further specifications what might 04 or any other error mean.

Hey Guys,I have designed a custom board with the STM32F429ZIT6 which I programm with the STLink debugger together with TrueStudio. So far everything seems to work except that when I don't use a debugging session I have to manually make a reset on NRST pin or otherwise the processor will not start it's normal program execution. I have to do this every time power get's cycled.I have one 4,7uF cap for overall buffering and then 10nF and 100nF at each Vdd and an extra ferrite bead for the Vdda pin but with 1µF and 10nF as a decooupling. I did not implemnt a 100nF cap from NRST to ground for short ESD burst but I doubt that this is the cause for the problem since after the manual reset everything works fine. Do I maybe need a reliable power cycling with an external power supervisor chip doing the manual reset, or did I do something comepletely wrong?My controller runs with 3,3V.best regardsBenjamin

Good afternoon, I would like to share an issue I’m facing with a stm8s105c4.A feature of our main application is to calculate a CRC of the entire program in the flash. Unfortunately, when I read flash data from addresses close to the instruction in execution, the data read it isn’t always correct.I’ve been able to reproduce the issue in this small program: main() { unsigned char* p_address; unsigned char dataRead; volatile dbg;   /* Loop and read the registers*/ for (p_address = (unsigned char*)0x80ce; ((unsigned int)p_address) < 0x80FF; p_address++) { dataRead = *p_address; dbg++; } dataRead++; }In this case, when p_address points to 0x80dc, this is what we can observe in the dissasembly and the core registers:      1)      This set the address we want to read in X0x80d7 <main+9>            0x1E04       &nb

Solved: The problem was an improper reading, the BKSRAM-clock was not initialized when reading back the report. Updating with "correct" code for posterity.I'm writing a (better) hard-fault handler for my STM32f207zg and want to do the following:Have a horrible crashJump into my (C) fault handlerSave various registers (CFSR, HFSR, LR, PC, ...) in the backup SRAMResetWhen back in main(), check if the watchdog reset the systemFetch the "crash report" saved in the SRAMDump it on CAN1,2,4,5,7 is easy, but I'm having problems with saving/restoring from the SRAM.The hardfault-handler calls the function fault_bksram_init() after filling up the fault_crash_t structure with data. It then calls fault_write_crash() in order to write the "report" to the SRAM. I can see using my debugger that the data is actually written to the address defined in BKPSRAM_BASE; however, after doing a reset using the debugger the memory at BKPSRAM_BASE is wiped with&nb

PWM1 control has block address F8 but i have access only to first 252 bytes (area 1 and 2)63blocks. Response from reader "Statusbyte:...0x95 Reader: ISO-Error ISO-Error = 0x10

We are bringing up a new board and having troubles establishing SWD connection, I was reaching out seeking help with this.Target - STM32F091RCICSP - ST-Link/V2IDE - TrueSTUDIOThis is our first use of the ST-Link outside of Nucleo-64 board development and I was thinking it may be best to start there:Board - NUCLEO-F091RCWhen I hook the Nucleo-F091RC up to the external ST-Link/V2, I use the following wiring & apply 3.3V -Config:CN2 - Jumpers RemovedVdd - 3.3V (CN6.4) Board Wiring:Vdd - CN6.2Gnd - CN6.6SWDIO - CN7.13 (PA13)SWCLK - CN7.15 (PA14)SWO - CN10.31 (PB3)NRST - CN7.14ICSP Wiring:Vdd - p1Gnd - p4 SWDIO - p7SWCLK - p9SWO - p13NRST - p15When I launch an existing project that works using the onboard ST-Link it now reports "a problem occurred", see attached. What is the issue here?Hardware Setup: Error Message: Debugger Config:

Requirements:1)     Need all the HRTIM output pins (PC6, PC7, PC8, PA8, PA9, PA10, PA11, PA12, PG6 & PG7) for Power Supply design, where many are typically used for USB Full Speed serial OTG_FS_XXXX pins (PA9, PA10, PA11, PA12, PA4)…Are following Assumptions true, if No, why? (Details please)2)     Only possible way to retain USB port serial Full Speed operation (don’t want / need ULPI interface: design devoid of external High Speed PHY, as design will also need these pins mapped to alternate functions). Therefore, just use USB OTG_HS_XXXX pins (PB12, PB13, PB14, PB15, PA4), they will function identical to OTG_FS_XXXX pins above when uC in OTG_HS1 mode (RM0433 figure 746)?a.      The USB OTG_HS_XXXX pins may be used / connected to existing external Full Speed serial USB circuit (identical to OTG_FS_XXXX pins) and may be programmed to function properly at USB serial Full Speed?b.    &

On an STM32F103 I configure SPI in 16bit wide mode and set up a DMA transfer to transmit one word:SPI2->CR1 &= ~SPI_CR1_SPE; SPI2->CR2 = 0; SPI2->CR1 = SPI_CR1_SSM | SPI_CR1_SSI | SPI_CR1_DFF | SPI_CR1_SPE | /* Some baud rate flags */ | SPI_CR1_MSTR;   /* Set up DMA transfers */ DMA1_Channel4->CMAR = (uint32_t) /* some buffer */; DMA1_Channel4->CPAR = (uint32_t) &SPI2->DR; DMA1_Channel4->CNDTR = 1; DMA1_Channel4->CCR = DMA_CCR4_MINC | DMA_CCR4_EN;   uint16_t dummy = 0xFFFF; DMA1_Channel5->CMAR = (uint32_t) &dummy; DMA1_Channel5->CPAR = (uint32_t) &SPI2->DR; DMA1_Channel5->CNDTR = 1; DMA1_Channel5->CCR = DMA_CCR5_DIR | DMA_CCR5_EN;   /* Transfer */ SPI2->CR1 |= SPI_CR1_SPE; DMA1->IFCR = DMA_IFCR_CTCIF5 | DMA_IFCR_CTCIF4; SPI2->CR2 |= SPI_CR2_TXDMAEN | SPI_CR2_RXDMAEN; SPI2->CR1 |= SPI_CR1_SPE;I connected a counter to the SPI's clock line and the above code produces 32 clocks. No interrupts are enable

I want to use a STM32F103, STM32L431, 451 and 471 microcontroller, but i don´t know if the crystal that i selected (ABS07-120-32.768kHz-T and ABMM2-8.000MHZ-E2-T) is valid for this microcontroller.And another question is how to calcule the load capacitance that a need to put in parralel with crystals.

I just installed the latest Atollic package, and the latest STM32cubeMX 4.27.0 plug-in.Created a cube project, edited the configuration, generated code.After code generation I clicked Open Project, but it failed:The newly generated project doesn't show up in the workspace where it was created.If I add the project manually to the workspace, it does not build.How can I get past this?Thanks!PS: Java(s) installed on this workstation:c:>java -versionjava version "11" 2018-09-25Java(TM) SE Runtime Environment 18.9 (build 11+28)Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11+28, mixed mode)c:>"C:\Program Files (x86)\Atollic\TrueSTUDIO for STM32 9.1.0\ide\jre\bin\java" -versionjava version "1.8.0_181"Java(TM) SE Runtime Environment (build 1.8.0_181-b13)Java HotSpot(TM) Client VM (build 25.181-b13, mixed mode)

Hi how can i link a USART PORT (RX and TX PIN) to a USB FS Port to send data via USB FS with USART RX and TX?How can i do that with CUBE MX?

We have incorporated a new touchscreen into our product and the button press and release events seem to be generated at the correct times. If I hold my finger on the button I receive a number of cancel events in between the press and release.I put in some debugging code and verified that my sampleTouch method is returning true and filling in the correct screen coordinates on each call while my finger remains on the button. I can't determine why the cancel events are being generated.Any guidance you could provide would be appreciated.

The image below, is of a SNES Classic (Super Nintendo Classic) controller's PCB. I can't seem to find out exactly what MC its using, all it really says is STM8mhz. On LCSC and digikey, they don't even have any 8mhz STM8 MCs, only 16 and 24mhz. This is leading me to believe it may be a custom MC, designed specifically for Nintendo.I would really like to create my own controller for the system. My plan was to download the HEX (I'm new to STM, coming over from the AVR side, so please excuse me if HEX is not the correct terminology), and upload it to another STM8. I just have my doubts it will work if its not the exact same chip.Am I correct in thinking that the HEX file from this MC, would not work in a similar STM8?I was hoping to load it on a STM8S103F3P6, as I have some development boards on the way.Do you think I would be able to load its HEX onto one of those?Thanks

ISR vector table in SRAM works, but not in CCM. Is this possible? If not, what is the theory behind it? Vector fetching done through I-Bus or S-Bus?

void app_SendBuffer (void *argument) { uint32_t dma_index; char Message1[26]; bool a; sprintf (Message1, "BufferSize_inBytes = %u\n", AdcHalfBufferSize_inByte); osDelay(5000); while (!USBD_Configured(0)) { osThreadYield (); } USBD_CDC_ACM_WriteData(0U,(uint8_t*)Message1,sizeof(Message1)); ADC_DMA_Start(); for (;;){ osThreadFlagsWait(0x00000020U,osFlagsWaitAll,osWaitForever); dma_index = osThreadFlagsWait(0x00000006U,osFlagsWaitAny,osWaitForever); a=dma_index&2; GPIO_PinWrite (GPIOC,14,a); sprintf (Message1, "Index = %u", a); USBD_CDC_ACM_WriteData(0U,(uint8_t*)Message1,9); } }Here is my example code , i can get "a" value as 1,0,1,0,1,0 .Code works as i expected.But if i try to write directly index as like this ;I always read 2,2,2, then always 5 dma_index = (osThreadFlagsWait(0x00000006U,osFlagsWaitAny,osWaitForever) ); a=dma_index&2; GPIO_PinWrite (GPIOC,14,a); sprintf (Message1, "Index = %u", dma_index); USBD_CDC_ACM_WriteData(0U,(uin

Hi,in the TouchGFX Designer I created a new Application with the Aplication Template STM32L4R9I Discovery. I used the UI Template TouchGFXWatch specified for the Discovery board. When I now click on "RunTarget" I'll get an Error that the target is not reachable. The ST-Link from the Discovery board is present.What is wrong? Have I forgotten something?RegardsChristian