Forum Posts
SDRAM Malloc and printf / sinit crash
Hello,I'm using an STM32H743-EVAL2 board, I want to access the LCD screen to draw a PNG image, so I'm using a png library to load the image, and this library use "malloc".Unfortunately the RAM of the H743 is too small for handling large pictures, so ...
Read multiple samples from external ADC via SPI DMA with discontinuous SCK
I'm working with a 24-bit external ADC (LTC2512-24) and stm32u5 (NUCLEO). With the MCU as master, after Data Ready Line (DRL) falling edge from the ADC I need to read 24bits via SPI within 740ns and then have SCK remain quiet until the next DRL falli...
How to enable character match on STM32L431
HelloI'm using an STM32L431 and trying to enable character match on usart2MXcube does not manage "MODBUS" modes and the st HAL layer doesn't seem to allow this setting (it allows modbus timout but not character match)So I try to modify USART_CR2 ADD...
STM32H7 HSE Amplitude
Hello I have a custom board with a STM32H753ZIT and I’m wondering about the amplitude of the HSE crystal. It is only 300mV (see the attached Image). It seems to wok but is this normal?The crystal requires a load capacity of 20pF per datasheet, the ca...
How to generate SFI file?
Hi,I am doing security project by STM32L562QE and have some questions.1. I am trying to generate SFI file, but I didn't find the document talking about how to generate these files(encryption key file, Nonce file, and option bytes file). Can you provi...
I2S Master has Full Duplex DMA L/R Swapped after Restart
Posted on January 02, 2018 at 22:53I have an application using an STM32F429ZI processor and I'm seeing a strange problem where the L/R audio output gets swapped after changing I2S frequencies.My procedure to change frequencies is as follows:HAL_I2S_...
Showing date and time of file creation in sd card
HelloI have interfaced sd card with controller STM32F779BIi have write text file in sd card but i could not see at what time file is written to sd card doesn't show in properties of that text fileis this is possible , if yes then how can i do that ?B...
UART communication problem between Raspberry Pi 4 and STM32F767ZI
Hello everyone,I'm trying to debug a problem with the UART communication between the raspberry pi 4 and an STM32.Indeed, I try to send the number 1 from the raspberry pi to the stm32 but I can't get the right result.Here is the code I implemented on ...
Resolved! Is there a way to make SPI NSS hardware output produce a steady state low without NSSP during SPI transaction without manual config and toggle of CSN GPIO?
Interface of STM32L476RG to TI CC1200 SPI. Using MCU registers with NSS produces short acceptable CSN to clock start interval but I cannot get rid of the high pulse between frames which causes the CC1200 to malfunction. Manually configuring and toggl...
