STM32 MCUs Products

A workaround for the fact that LPTIMx CNT register is read-only and typically do not have a reset

In many of the STM32 processors having LPTIMx timers the CNT register is read only and there is no explicit reset which will clear the CNT register. The following is an undocumented hack which will accomplish the equivalent of a reset of the CNT reg...

Will the ADC windows whatchdog mode work for waking up a device?

Hi!I would like to know if there is any chance on waking up a STM32L0 (from stop mode) with an ADC in windows whatchdog mode. Probably the ADC won't operate in that mode. because of the clock. Or the ISR source won't wake the CPU.

STM32L4S PLL accuracy with the HSE clock

I want to feed the HSE clock (sourced by a 4MHz oscillator) to the PLL to create a SYSCLK at a higher frequency. Is there accuracy information on the PLL or is the accuracy of the output clock driven by the external oscillator? I've checked the data ...

I using stm32l4 in low power mode and wants micro counts of input gpio pulses.I attached the explanation and the code.

I am designing STM32F429 to access NOR Flash S29GL01GS. Refer to RM0090 reference manual, I am using FSMC to perform asynchronous read. What is the correct value for NOR_Timing.DataSetupTime? How do I calculate it?

Below is the ST sample code. /* NOR device configuration */ NOR_Timing.AddressSetupTime = 1; NOR_Timing.AddressHoldTime = 1; NOR_Timing.DataSetupTime = 6; NOR_Timing.BusTurnAroundDuration = 0; NOR_Timing.CLKDivision = 2; NOR_Timing.DataLatency = 2; N...

STM32 with UART protocol sensors (URM07 ultrasonic sensors)

Question: What function could be used/ written to receive the data (URM07)?Currently, integrating an URM07 ultrasonic sensor on STM32f1xx, according to the datasheet the transmission, have tried the function on UART (HAL_UART_RxCpltCallback) to recei...

How can we store the bonding data in order to do the pairing again after a power off?

We are working with a SPBTLE-1S as a network module connected by a SPI port with a STM32L072 as a host. We would like to store the pairing data of several devices, close the connection and make individual connection with every devices. We would like ...

Stuck in UART_WaitOnFlagUntilTimeout

Hi,I'm trying to transmit/receive data by uart. I have a state machine that is processing incoming bytes periodically, so I use a ringbuffer and write every received byte into this buffer.void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){  if (...