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I was playing with SDRAM and found a very strange cache behavior. Can anyone help me understand what is happening?I am using STM32F7508-DK board. The SDRAM is connected with FMC.I am basically going over a small 2-d tile inside a 2-d array. The tile ...
I am using STM32F7508-DK and using Ext Flash connected to QSPI. It is mapped to 0x90000000~ region which is by default covered with cache, but for some reason, it seems like it is not benefitting as much compared to on-chip SRAM or SDRAM connected wi...
Hello everybody! I need to store dataset into the RAM of my MCU. I use STM32H755ZIT6, Dual Core M7+M4. The problem is that when I define buffer for my data the ram will overflow. The Ram size is 1MB but the whole data set's size is around 250KB. it s...
I'm using a Nucleo L476RG board, and configured the DAC output channels 1 and 2 using Cube IDE (normal mode, output buffer enabled, factory trimming). I measured VDD to be 3.378 V with a DMM. Both DAC channel outputs saturate with no load connected b...
I need to measure a signal that arrives on the board through a 100K resistor. I am trying to avoid having to add an operational amplifier to buffer it before the ADC input. I could use a bit of help understanding what the data sheet says about the ...
int USART2_Write(int ch){ //wait for TX buffer empty while (!(USART2->SR & USART_SR_TXE)) {} USART2->DR = ch; return 0; } int USART2_Read(void) { while (!(USART2->SR & USART_SR_RXNE)) {} return USART2->DR; } #ifdef __GNUC__ #define PUTCHAR...
Hello Everyone, im am building a custom PCB using the NUCLEO-H755ZI-Q as a reference but i am not sure what the difference between the STM32H755ZIT6 and the STM32H755ZIT6U is. The scematic uses the STM32H755ZIT6U but that one isnt in stock, so i woul...
Dear Readers,I got a lot of problems getting a PDM microphone (IM69D130) via SAI running on an STM32L431. I connected it as specified in app Note AN5027 (Select --> HIGH; Clock --> SCK_A; DATA --> SAI_SD_A);SAI_1 has 32 MHZ.Sai_init:hsai_BlockA1.Inst...
Hi I'm usiing STM32F746 controller, I am erasing sector 7 using HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *SectorError).Erase operation is successfull but the Controller functionality is not working i.e it is not taking any input...
I'm trying to use the watchdog on a STM32F401.The watchdog initialization is as follows: hwwdg.Instance = WWDG; hwwdg.Init.Prescaler = WWDG_PRESCALER_8; hwwdg.Init.Window = 127; hwwdg.Init.Counter = 127; hwwdg.Init.EWIMode = WWDG_EWI_DISABLE;In norma...
