STM32 MCUs Products

Datasheet for the Macronix flash is not available on-line. Can someone tell me about the correct parameters needed for the Macronix MX66UW1G flash?The number of sectors (used 32), sector size (used 4096), page size (used 0x100), chip select high time (used 2), delay hold quarter cycle (enabled) and any other useful information to get the external memory loader to work?I'm getting a failure to erase flash sector0

  uint8_t my_buffer[ 1B_LEN_PREFIX + 24B_LEN_DATA + nB_LEN_SUFFIX ] = {0}; (void) HAL_SPI_TRANSMIT_DMA(&hspi2, &my_buffer[0], sizeof(my_buffer));   I'm using the SPI TX line only to drive an addressable LED, making a custom waveform from SPI bits to LED bits. Not using the SPI CLK line, although it does have to be defined in AF Mode for SPI to work at all.Scenario:* Using GPDMA in a non-linked list mode* I am always ending on a low bit.* After transfer complete, the MOSI goes high* It usually floats down softly* When I start a new transmission, there is a 40ns spike before my prefix (1B 0x00) data on subsequent transfers. This is because the SPI was disabled after ending high, re-enabled, and immediately goes high for a moment before DMA data loads.* If I ended on a high bit, I would expect MOSI to be an

It's a niche application. STM32H5 QFNI need SPI2_MOSI to make a specifically shaped wave. SPI is works well for this. I do not need the SPI_CLK pin/function. I set Cube MX to SPI2 Transmit Only Master, and of course it applies the CLK pin because almost everyone would want that.I would just not hook the CLK up but for two reasons:1. I don't really want a wiggling pin hooked to nothing.2. I want to use that pin for OCTOSPI_nCS (for QSPI). It is a valid function of that pin. I know roughly in code what I would need to change to select that pin for that function. However, Cube MX either allows me OctoSPI using that pin for SPI2. I can't find the answer to what pins are required for a peripheral in the reference manual.Is it possible to use SPI2 for only it's MOSI pin and use the pin that would be SPI2 CLK for OCTOSPI_nCS instead?

Hi Team,   I am working on STM32U5A9J-DK for one of our applications interfaces with an Octal flash via Octal SPI. we were able to communicate and do the flash operations Read write using the SDR mode . Now to achieve the DTR mode from STM32U5a9 end what are the initial setting we need to go through or make? We have a register in Octal flash to set it in Octal DDR mode, but do we need to set anything from STM32 end to change?    Regards Sanath

How does the (USART_ISR) BUSY flag get reset? The data sheet indicates "end of reception," but that is not defined. Is it an end-of-frame, idle event, or something else? 

I am following a basic example from stm32: Getting started with SPI - stm32mcuI follow the steps for setting up SPI master with polling (Blocking mode). I did make sure to select the board STM32H573 DK instead of the one listed in the example.I initially used SPI5, however it wouldn’t transmit anything and its clock was always high.Then I switched to using SPI2, however it was always stuck low.Any insight would be appreciated.I connected a logic analyzer and here is an image of this : 

DMA buffer 32 words, ADS converts 4 channels in scan mode.So every 8 ADC-starts  DMA will start at buffer[0]  (circular buffer is ticked).CubeIDE HAL is being used.How do I find out / look up  the buffer offset most recently written to?

I have a structure that starts from my own bootloader, and I want to jump to the application. My question is similar to the one in this thread: Is it possible to keep dual bank active and executing the whole FLASH?  I am using the STM32G0B1RE microcontroller. If I put my program starting at an address in Bank 1 and continue through Bank 2, will it work without any issues?

Hi All,I'm sure this has been discussed before - and there's probably a solution out there, but for the life of me, I can't find it.So here's the situation.I have a large (~256K) block of graphics data, that sits within its own designated sectors at the top of the CPU flash. This data very rarely changes.Is there any method that I can use, that will stop this data being re-programmed by CubeIDE everytime I change some software? Is there an IDE setting that will ignore reprogramming data/sectors that haven't  changed since the last reprogram?Obviously, this would speed up development - which would be nice...Cheers,Toneski

Hi,We have a custom design based on STM32L053C8U8 with the pinout mapping  as image attached. The GPIOs setting and initialization code is generated by STM32CubeIDE version 1.17.0 and companion CubeMX . however, the GPIO level the output pins are not in line with the firmware control using HAL_GPIO_WritePin(). for example, HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_RESET) won't sew the PA11 to LOW. The initialization code is attached. What's wrong? thanks in advance and appreciate your responses!   

Hey folks,I am using the STM32G0B1RE board for my development and am currently working on a Bootloader application. I have successfully implemented the jump from the Bootloader to the main application. The main application initializes correctly and enters the while loop as expected. However, I am encountering an issue where the interrupts in the main application are not being triggered. Here are some details:The Bootloader starts at address 0x08000000, and the main application starts at address 0x08008000.Here is the code I use to jump from the Bootloader to the main application, where I pass 0x08008000 as the Address. void OPENBL_FLASH_JumpToAddress(uint32_t Address) { Function_Pointer jump_to_address; /* Deinitialize all HW resources used by the Bootloader to their reset values */ OpenBootloader_DeInit(); /* Enable IRQ */ Common_EnableIrq(); jump_to_address = (Functi

Is there any STM32 in TSSOP-20 package with OSC_OUT pin for use with a crystal oscillator?Mark Jordan 

Congratulations. I have such a problem. I've made 1000 PCB prototypes and 30% don't want to enter DFU mode. If you try to turn the PCB back on multiple times, the part will go into DFU.I'm using a USB Type-C connector, could that be the problem? Also tried changing the USB cable, but that didn't fix the problem.I use a microcontroller STM32F405RGT6TR.What can this be related to?

I'm testing whether HAL_I2S_TxCpltCallback or HAL_I2S_TxHalfCpltCallback is called properly by setting i2s to normal and periodically calling HAL_I2S_Transmit_DMA. However, HAL_I2S_TxCpltCallback or HAL_I2S_TxHalfCpltCallback is called only once and not again. I want to use i2s in normal mode, not circular mode, so I'm testing like below. Is there something wrong?When I check the return value with status = HAL_I2S_Transmit_DMA(&hi2s2, audioBuffer, AUDIO_BUFFER_SIZE);, HAL_BUSY(2) is returned. while (1) { HAL_I2S_Transmit_DMA(&hi2s2, audioBuffer, AUDIO_BUFFER_SIZE); HAL_Delay(1000); } void HAL_I2S_TxCpltCallback(I2S_HandleTypeDef *hi2s) { dma_count++; } void HAL_I2S_TxHalfCpltCallback(I2S_HandleTypeDef *hi2s) { dma_count++; } 

Hello, I am using STM32L475 board and trying to communicate with VNF1048F by SPI. The communication protocol which is used is defined as ST-SPI. On STM32 I can configure at maximum 16 bit communication but the device (VNF1048F) requires 32-bit frames. That is why I am using 8 * 4 bit. On regular basis I spi error bit is getting set, but only when reading certain registers.

I have to read a 20-bit SSI signal. I connected it to a SPI interface as a “Receive Only Slave”.It appears that the SPI interface is limited to 16-bits.We could live with the first 16-bits of a 20-bit word. Can the SPI receiver do that?

Hello,I am considering the STM32H7 for a new project I'm working on.I'd like to configure the MCU to output 10 audio channels at 96khz using TDM, all synchronized. Some variants of the STM32H7 come with up to 4x SAI peripherals and support TDM.I'd like to connect those SAI peripherals to DACs using TDM. Any combination would work 2x TDM4 + 1x TDM2 or 1x TDM8 and 1x TDM2.  Each SAI peripheral seems to have 2 subblocks: SAI-A and SAI-B,  and there seems to be an option to switch between stereo and mono. Here is where I get a little confused:1) Does this mean I can configure SAI1-A and SAI1-B to both be TDM4 and SAI2-A be TDM2? What is the difference between two SAI subblocks within the same peripheral and subblocks from different peripherals?2) Is the output mode (stereo vs mono) still applicable when configuring for TDM? In other words if an SAI subblock is configured to have 4 slots, does this mean those are 4

I designed a board using a STM32L031F6P6 about 4 years ago,  (April 2021).   The design has been using the internal oscillator running at 16Mhz perfectly for years.   Then this past summer all of a sudden the RS232 Uart stopped receiving data until I cycle the power on the unit.    The problem has now become more frequent, and the Tx on the uart is also bad, so it appears like the baud rate is bad, which means the internal oscillator is drifting.   My spi bus remains 100% fine btw.   Has anyone ever seen this with the internal oscillators?,   can they drift over time like this .    I would expect the accuracy of the oscillator to be stable  .Thanks .  

Hello!I am writing a driver for the mt6701ct rotary magnetic encoder, using cubeIDE and an stm32f405 MCU. This sensor communicates via SSI, which is to say that it's read-only (MISO-only; there is no physical connection to MOSI). Using a simple polling strategy, I can communicate fine with this sensor using HAL_SPI_Receive().I'd like to learn more about using DMA for this though, and am interested in trying to get circular DMA working. My SPI is configured like so:

I want to generate 6 PWMs using channel 1 of timers 1,8,2,3,4,5. All of them are set the same way except ARR, PSC and CCR1 registers. However, it turned out that timers 2 and 3 don't have PWM signal on their pins. The content of registers for those timers are the same (checked during debugging). I also tried to initialize timers by writing directly to registers, with no luck. MCU: STM32F103RCT6. Here is the the initialization for timer 3, for example: // ------------------------- PA6 settings ------------------------- // RCC->APB2ENR |= RCC_APB2ENR_IOPAEN; // Port A clock (PA6 - TIM3_CH1) GPIOA->CRL |= GPIO_CRL_MODE6; // PA6 speed MAX GPIOA->CRL &= ~GPIO_CRL_CNF6_0; // Alternate function Push-Pull GPIOA->CRL |= GPIO_CRL_CNF6_1; // ------------------------- TIM3 settings ------------------------- // RCC->APB1ENR |= RCC_APB1ENR_TIM3EN; // TIM3 clock TIM3->CCMR1 &= ~TIM_CCMR1_OC1

Good evening....I would like to do an A/D conversion on Channel 9 and Channel 10. I have a timer that goes off every second and within this ISR I call HAL_ADC_Start_IT. The ISR gets called upon conversion complete. Now the question is End of Conversion Selection: Should it be 'End of Single Conversion' or 'End of Sequence of Conversion'?? Even though I am sampling multiple channels is this considered a sequence or a single conversion of multiple channels, given that I am using a timer to trigger this single event every second???? This is not explained well and confusing.ThanksSteve

In HAL_DACEx_ClearConfigAutonomousMode(), a test is surrounded by parentheses that are clearly unnecessary in code generated by STM32CubeMx.This is not very important... but it generates warnings that I check at each compilation...

Is it possible to program the MCU via Serial using the USART pins (PB6,PB7)???? 

As discussed in here, im trying to use ST\s ROM bootloader, when i read AN2606 Page 280 shows the FDCAN1 rx and tx Pins   Those pins dont exist in stm32H743ZI@KDJEM.1 proposed "you can activate the

Hello,Now I am designing a IAP program for STM32G474VET6 according to the AN4657 referred to STM32L476G_EVAL. and I used VScode +CMake tools.I have modified the flash_if.h because of the diffrence between STM32G474VET6 and STM32L476G as below  /* Define the address from where user application will be loaded. Note: this area is reserved for the IAP code */ #define FLASH_PAGE_STEP FLASH_PAGE_SIZE /* Size of page : 2 Kbytes */ #define APPLICATION_ADDRESS (uint32_t)0x08008000 /* Start user code address: ADDR_FLASH_PAGE_8 */ /* Notable Flash addresses */ #define USER_FLASH_END_ADDRESS 0x08080000 /* STM32G474VET6, Flash 512KB*/ /* Define the user application size */ #define USER_FLASH_SIZE ((uint32_t)0x00008000) /* Small default template application */   and modified the flash_if.c as below