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Hello all,I'm trying to prototype a shutdown mode with a RTC alarm.I'm flashing the LED 5 times, then I set-up the RTC calendar, clock and alarm A (5 seconds after set-up clock). Then I go to shutdown mode. Everything works when I program my system (...
Hi, I've been trying to compile a program to talk to a sensor over UART for my STM32L476RG board. I'm having an issue with that I've tidied up the library that is needed to talk to the sensor, but I'm getting errors that I'm missing header files such...
In an attempt to reduce power for a critical battery powered system, I tried, without success, to make the chip run in the power range 3 (1.2V). Here is what I do: At power up, with the chip running from the MSI clock divided by 2 (1Mhz), whatev...
I'm currently using the STM32L4R9I-EVAL board and trying to prototype an application where the microcontroller will need to be in lowest power (i.e. SHUTDOWN) mode for several days or weeks and then wake up to perform an action. I can get the the mi...
Hello,Still struggling with my SPI setup.See https://community.st.com/s/feed/0D53W000006r3jX for details on SPI and GPIO settings.On the exact same setup I have sometimes a correct communication and trace is :SCK in yellow, MISO in blue. I send bytes...
Hi, I configured PWM 25 kHz on Nucleo-767ZI to control the PWM fan.When I set up Duty Cycle 1% -3% and 98% -99% the PWM signal is deformed.When the Duty Cycle is 4% to 97% PWM signal is good.Can it be improved or is it normal?Regards
Hi all,I have the STM32F427VI connected using serial RS232 cable.I downlaoded the latest version of the Flash Loader and the parameters are Even/115200/Disabled/8I tried using jumper on boot 0, boot 1 and boot 0&1 but I can't connect to the MCU.Any i...
I am using an STM32F429VGT6 with SWD debugger, and OpenOCD software 0.10.0.I am trying to dump the contents of the flash memory at 0x08000000.If I don't use any WFE/WFI in my code, this works fine. If I put a WFE at the beginning of the code, before ...
My code here:... @ some code ... end: nop b end thread0: mov32 r1, 0x4001100C @ GPIOC_CRH address ldr r0, [r1] orr r0, 0x8000 @ switch_on C15 only str r0, [r1] b end nvic_systick: push { lr } @cpsid i mov3...
The errata suggest to "insert a dummy phase with at least two dummy cycles" when using indirect data read mode.However, according to the documentation of the dummy cycle phase (AN4760 rev 3, section 3.1.4 and figure 8 ) states that in the dummy phase...
