About Elliott99

Elliott99 · 2025-02-17

Hello,I would like to configure PA11 as an EXTI pin. I know that there exists the hardware limitation that there cannot exist two pins with the same pin number in different ports configured as an EXTI pin (I.E., I could not configure both PB11 and PA...

Elliott99 · 2024-11-08

I have a system in which the power source to the CAN transceiver interfaced to the on-chip CAN peripheral is common between multiple MCU's vis-a-vis a connector. I have experienced issues wherein if the connection is broken and then re-connected betw...

Elliott99 · 2024-08-22

I generated code using CubeMX that should permit me to transmit over SPI1 using DMA for RX and TX, as well as CPOL = 1 and CPHA = 1. I very slightly modified the auto generated CubeMX code but see nothing in the SPI CR1 or CR2 registers, nor the DMA2...

Elliott99 · 2024-08-13

My project uses multiple different GPIO's configured as EXTI interrupt sources, and there is a point where, after calling the API:HAL_PWREx_EnterSTOP2Mode(PWR_STOPENTRY_WFE)Some different instructions should be executed depending on which EXTI rising...

Elliott99 · 2024-05-23

Hi, I am attempting to enable TIM1 to act as my program's tick timebase as SysTick is being utilized by the FreeRTOS kernel to generate PendSV interrupts. I configured this in CubeMX (Timebase set to TIM1) but I cannot get TIM1 to start ticking. Atta...

Elliott99 · 2024-08-23

Thank you.I reconfigured the GPIO pin that was previously being used as the NSS pin as a GPIO output, and set the pin LOW when the call to transmit begins. I ensure that the GPIO pin now being used does not go high until the DMA transfer complete cal...

Elliott99 · 2024-08-14

Hey Karl, I think I understand my issue, but some guidance on how to get around it would be appreciated.The EXTI lines that can wake up the processor are configured in event mode. I found this in section 14.3.2, "Wakeup event management", of the rm03...

Elliott99 · 2024-05-24

Thank you for the reply. I am away from home for the weekend (and my setup for this is at home as it is a personal project) but I don't believe the registers are frozen as stepping through Hal_InitTick() and looking at both the memory view (at the TI...

Elliott99 · 2024-05-24

So I did check that TIM1EN bit in that register and is set, so I don't think that's the issue.

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STM32L431: Enable EXTI on a Pin Number Used as UART RX on a Different Port

STM32L496 Resetting CAN TEC/REC Counters

STM32F429ZI SPI TX Using DMA: SCL Output Timing Wrong, Clock Polarity Generated Wrong

STM32L496 Determine EXTI wake-source when processor has been put in STOP mode

STM32F4 Timer Counter Never Starts Counting

Re: STM32F429ZI SPI TX Using DMA: SCL Output Timing Wrong, Clock Polarity Generated Wrong

Re: STM32L496 Determine EXTI wake-source when processor has been put in STOP mode

Re: STM32F4 Timer Counter Never Starts Counting

Re: STM32F4 Timer Counter Never Starts Counting