Hi. I am working in a project which involves the use of an STM32L443 microcontroller. I am using the IAR for ARM v 9.30.1 and the CMSIS and ST drivers package (STM32CubeL4 Firmware Package V1.17.1). I am using LL drivers (HAL is not suitable for our ...
I am trying to create a frequency meter in a STM32U575ZI microcontroller that works with ThreadX and low power consumption using the low power timers LPTIM3 and LPTIM4, as well as an interrupt using EXTI 14. In summary, I use LPTIM4 to count input p...
I am following an the example from MOOC;https://www.youtube.com/watch?v=nSLN_WM2TOc&list=PLnMKNibPkDnExrAsDpjjF1PsvtoAIBquX&index=59&t=889sI can't make it work, apparently LPTIM trigger interrupts continuously.I create a fresh project to reproduce pr...
Hi. I am using STM32L412KBTx for my application. I am using LPTIM for 150ms and 5s timings.The pattern is like 150ms-->5s-->150ms whenever data is received over LPUART.So, for first 150ms timeout value, it runs fine and when I start for 5s timeout va...
I am currently working on a project using a sensor that sends quadrature encoded data. I have it wired so that the data is connected to comp1 and comp2 which in turn is read by the LPTIM1. LPTIM1 is set to encoder mode, but for some reason I for th...
Hi. I have an application where I am using the LPTIM1 from an STM32L072 as a tick source for FreeRTOS. I am using the Idle Hook (not the tickless idle, that just did not work for me) to make the microcontroller reach STOP mode with a global variable ...
Hi,these defines are defined very strange/misleading in STM32H743xx.h (from current version 1.7: STM32Cube_FW_H7_V1.7):#define LPTIM_CR_SNGSTRT_Msk (0x40001UL << LPTIM_CR_SNGSTRT_Pos) /*!< 0x00080002 */According to RefMan Desc of SNGSTR...
In the ST's example about the use of LPT with RTOS (STM32Cube_FW_L4_V1.15.1\Projects\B-L475E-IOT01A\Applications\FreeRTOS\FreeRTOS_LowPower_LPTIM). In the function 'vPortSuppressTicksAndSleep()', the interrupt is disabled as below:/* Enter a critica...
On a STM32L4 I've successfully developed a FreeRTOS tickless method using LSI driving LPTIMx at 32Khz with wfi Sleep mode in spite of the restrictions on the LP timers. Tick timing while not perfect is reasonably accurate and more than sufficient fo...
Posted on October 28, 2014 at 06:58Hello,I have some problems to initialise the Low power timer correctly. I'm using the STM32Cube firmware and a STM32L053R8 chip. To start with the LPTIM, I will only toggle a GPIO but I'll never enter the interrupt...