Forum Posts
stm3240g-eval eeprom(M24C64) issue.
HelloI test external eeprom (M24C64) on the STM3240G-EVAL. But it doesn't work well. HAL_I2C_Mem_WriteBytes() and HAL_I2C_Mem_ReadBytes() return the HAL_OK.But when I check the data[] buffer, the value is all "255".This mean that memory is empty? The...
Which code routine loads proper code on ITCM in X-CUBE-PERF-H7 package?
I am testing ITCM on STM32H735 by using X-CUBE-PERF-H7 package.In the stm32h7x3_cpu_perf project, some codes are located to ITCM region using a scatter file.After I download the executable code on the chip, I powered off the chip and run the code. I ...
Resolved! why it does not enter the if statement?
I have a code made to check an if statement and then perform something. here is the if statementfor(int j=0;j<10;j++) { if(removed_Num==USERS[j]) { //do something} }USERS[j] is a 13 element array and removed_Num is also a 13 element array. I'v...
Error with assembly programming using eclipse IDE. subdir.mk
Hello, im trying to make a small code with assembly using eclipse IDE, but a strange error appears in a file called subdir.mk the ide does not tell the error just show the line:@echo 'Building file: $<'The assembly code itself doesn´t matter, if i p...
STM32F7 UART Communication Using DMA
UART Communication Using DMA Not WorkingI have Nucleo-F767ZI Rev B board and using the STM32CubeIDE Version: 1.1.0.To test and implement UAR-DMA communication as presented in:STM32CubeMX basics: 10.11 STM32Cube HAL labs UART - UART DMA https://www.yo...
Two UART DMA transmissions in a row.
Hello,I am currently working on a project which requires the use of the transmission / reception of a UART by DMA. I would like to make two transmissions in a row like the following.void send_all_registers() { HAL_UART_Transmit_DMA(&huart2, (unsigne...
Resolved! Changing SPI Prescaler Value on Nucleo-L476RG
Hi,I am pretty new to programming STM32 MCUs and I have been having a hard time finding out how to change the SPI prescaler value on my Nucleo-L476RG board. I am trying to implement FatFS using SPI via an online tutorial and their method of changing ...
How to use RCC to reset a peripheral?
STM32G474RE: I need to reset the USART3 peripheral and I see the register RCC_APB1RSTR1.USART3RST. I assume this bit needs to be set, then cleared, after a delay. But there doesn't seem to be documentation. What is the correct procedure and how long ...
