STM32 MCUs Products

1GB memory usage instead of 512MB for STM32L4R9AI

The STM32L4R9AI documentation says that it supports Macronix MX25LM51245GXDI00 and Micron MT35XL512ABA1G12-0SIT Octo-SPI Flash memories. These modules are not currently available for sale.Please tell me, is it possible to use MX66LM1G45GXDI00 instead...

How can I measure 4mA with a ADC from STM32? How to achieve 4mA -> 0 ADC?

Hi!I know how to measure 4-20mA sensor with STM32 by using a 160-165 Ohm resistor as a shunt resistor between ground and analog input of the STM32, and then apply 4-20mA into the analog input.But at 4mA, I gout about 0.6V into the ADC and then I losi...

QSPI issue

I am using STM32F746 controller and MX25L128 flash on a custom board.I want to make external flash loader file for my custom board.I followed the MOOC - External QSPI loader how toI got error while memcmp for (var = 0; var < SECTORS_COUNT; var++) { ...

STM32F1xxx shortages

We moved to STM after being let down by Freescale and TI in terms of sourcing. We are now finding massive MCU shortages and lead times > 30 weeks. Even despite this, we just found out that apparently STM is not taking additional orders.It is frustr...

WAKEUP from STANDBY mode and EXTI/NVIC IRQs

Hi all,I'm learning about low power modes , and I'm testing the RTC wakeup timer function.Datasheet talks about to set the IRQs for WakeUp timer on EXTI(IRQ 19) and NVIC(IRQ 3), but I tested in my code, with and without set these IRQs and the wakeup ...

I already have the board.

hello , im using adc-dac combination where i want to regenerate the waveform using dac. im fedding input to the adc externally using waveform generator. But the problem is my adc buffer show value beyoud 4000 irrespective of the input. why is this so.

even i grounded the ADC input pin but still i receive garbage values of >4000.Is there any problem with the configuration of adc. im currently stuck at the adc. anyone with the adc dac code help me out.

Hi everyone I need help understanding what I am doing wrong. I would like my buffers to work properly, but when I run the program my terminal starts sending all sorts of strange characters. I use stm32f411e-Disco

#define UART_RX_BUF_SIZE 20 #define UART_TX_BUF_SIZE 20   int8_t uart_put_char(char data); int8_t uart_get_char(char *data);   volatile char uart_rxBuff[UART_RX_BUF_SIZE]; volatile char uart_txBuff[UART_TX_BUF_SIZE];   void uart_put_string(char *s...