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SPI (Basics): Why do I get a signal at MISO (PB_4) when performing a write without any connection to this pin? I am using STM32F413 Discovery Board with mbed

Hi everyone, I am trying to connect my STM32F413 Discovery Board to a MAX30003 ECG but without any success. So I checked the SPI signals with a scope and discovered that I measure a signal on the MISO line as soon as I use a write command. All pins (...

jjens by Associate II
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Regarding the Interrupt

i am working on enabling the gpio interrupt..i have setted a GPio pin as a interrupt and i have given priority for the interrupt and configured as a rising edge and written callback for that..but the issue when i apply high on the GPIO the interrupt ...

NMuth by Associate II
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STM32f4 Discovery ADC problem

I am trying to do a partial integration on a 550 KHz waveform using STM32F4 Discovery board using the Waijung toolset in Simulink. The sampling time that I am using is 0.018 us, i.e 3 cycles if the clock frequency is 168 MHz. The ADC prescaler is 2, ...

0690X000006C3SJQA0.jpg 0690X000006C3SEQA0.png
SMitr by Associate II
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STM32F103 read/write SD card with SPI not SDIO

I would like to know if there is any examples on SD cards with SPI interface and HAL drivers. I use cube MX to generate my code and also the HAL librarys. However i know to get SD cards working with SPI I need to change the low level files which fatf...

Resolved! Reading current sensor via SPI (Solved)

I'm having problems to read my current sensor, which is located at the source leg of a power transistor. I'm using the sensor TLI4970This is my routine every 10ms:HAL_GPIO_WritePin(GPIOA, GPIO_PIN_5, GPIO_PIN_RESET); //Bring slave select low   HAL_SP...

xpp07 by Senior
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Bypassing UART

I have a UART configured in DMA read mode:/* task 1 code*/ uint8_t dmaRXBuffer[1]; HAL_UART_Receive_DMA(&UART_DOWN_USB_TO_SERIAL, dmaRXBuffer, 1);   /* UART DMA receive complete ISR code*/ void HAL_UART_RxCpltCallback(UART_HandleTypeDef* huart) { if...