We have custom SOM which has been designed with STM32MP157C and we want to enable the backlight of a display panel using a PWM driver in uboot. For this, we tried enabling the pwm_backlight.c driver available in /drivers/video/ in uboot.Following con...
I want to generete interrupt for specific value of TIM->CNT TIM1->DIER |= TIM_IT_CC1; TIM1->CCR1 = myVal;I use only above. if(TIM_GetITStatus(TIM1,TIM_IT_CC1) != RESET){ //when interrupt generete here ,CCR1 is not equal my value } I'm so confused w...
HiWe are using SEEED studio 102110318 module which uses STM32MP157CAC3 processor. We want to know if there is any way we can keep processor pin PD13 pin to low state in suspend state. We want the pin to maintain low state while in sleep mode. We have...
I want to enable input capture functionality on our stm32mp157c based system. I am using Timer 1 channel 4 for the same and have made the necessary additions in the device tree as follows: &dma1{ status = "okay"; /* USER CODE BEGIN dma1 */ s...
Hi,I am using STM32MP153a SOC.Linux kernel version is 5.4.56 (openstlinux-5.4-dunfell-mp1-20-11-12).I would like to generate square signal of 50-200 uS on a certain GPIO every 40 ms using Linux kernel.Also ,at this point I need to read certain regist...
Hello,I been working on stm32mp1 soc. In m4, totally, i have configured 3 timers(Timer2(input capture), time13,timer16). when i start the m4 from A7 after Linux login, all timers work fine. But when I use a startup script to start the M4 during Lin...
I am trying to configure the TIM2_CH4 to capture mode on EV1 board so I can sense a fan speed from a PWM fan but I keep getting cat: read error: Connection timed outI have configured the timer as follows: &timers2{ pinctrl-names = "default", ...
I'm building an elf file, SCPing it to the controller and using the fw_cortex_m4.sh to load it on the m4, but no matter what I set the APB2DIV scaler to the number of times per second TIM16 is called doesn't change. The only thing that does seem to ...
Looking at the clock in the MX Device Configuration Tool it says 204 to APB1 Timer Clocks (MHz).To get to 10000 Hz I have to divide 204 MHz by 20400. Fortunately there are a bunch of ways to do this. But on the first try I tried Prescaler 51Counter ...