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Hello everyoneI am a begineer with stm32 MCUs. I studied through youtube videos and datasheets that we can program STM32H750 using STlink V3 and to do so the MCU should be put into bootloader first. To do so the boot pin must be pulled low for which...
Hello World;My Setup:Nucleo F767ZI BoardBOOT0 pulled highSCL/SDA on PB6/PB9 connected to Raspberry Pi I2C-1 and Saleae Logic Pro 8Nucleo board powered via USB from Raspberry PiGoal: Using ROM Bootloader over I2C for firmware updates (later on custom ...
Hello,I’m working on a custom board based on the STM32H753IITx and I'm trying to access a microSD card via USB_OTG_HS using the USB Mass Storage Class (MSC). I've read this post, which is close to my use case, but unfortunately, I haven’t been able t...
Hello,Using RS485 for modbus communication.It is observed that, if we disable STOP2 mode then RS485 communication works fine (no frame loss). but asa we keep STOP2 mode then at the time of wakeup I found some frame loss.#define RS485_TX_ENABLE() HA...
Hello everyone,I'm currently working on a UART communication protocol using STM32 USART in multiprocessor mode (MME / Address Mark) over RS485. My goal is to receive variable-length data frames only when the address matches, and use DMA + IDLE interr...
I am verifying USB implementation using Nucleo-H7S3L8.When I executed CDC_Standalone in STM32CubeH7RS using the Debug button and ran the Appli code, the function “HAL_PWREx_EnableUSBVoltageDetector()” in ‘MX_USBPD_Init()’ did not return HAL_OK and an...
Previously had issues with TXP flag never clearing for interrupt-driven SPI. Changed some HAL code and got it to work.Moving on the DMA, the first 8 bytes received match the transmit buffer and the 9th byte matches a byte farther into the transmit b...
I have done a PCB Design with microcontroller STM32L071CZT6 as the mcu. PB15 which is a 5V tolerant pin is connected to a source of 4.9 V with a resistor 270 kOhm in between. I measured the voltage at the PB15 pin to be 4.9 V but, when I set it as Di...
Hello, I am trying to write some non-blocking motor driver code for a STM32F401Re board. Currently, I am setting the timers to PWM mode and adjusting the ARR to change the PWM frequency using an IRQ handler. This approach is working for TIM3 output, ...
Hi,I'm currently debugging what I think to be a code issue. I have a custom board with all peripherals physically disconnected and a NUCLEO-U575ZI-Q dev kit. The lowest current I see is about 250uA on both setups, with a sawtooth charge/discharge wav...
