Hi i m coding function to write 8 bit data to a slave device, what does the (byte & 0x01) do in the for loop and what does the shift right statement ( byte = byte >> 1;) do ? void write8bit(uint8_t byte) { int i; for (i = 0; i<8; i++) { lowClk()...
Can someone please help with how to calculate the series current limiting resistors to be connected from STM32H7 or any MCU to transceivers or any other interfaces? Is there a general thumb rule followed? Also how to calculate the wattage of resistor...
stm32f429 ran in PCLK2 with 160MHz, and TIM8 prescaler division set to 0, auto reload set to 1.set up interrupt enable.in TIM8 update interrupt handler, just toggle PD4 pin out.when use oscilloscope to check the wave of PD4, just get around 2.3MHz. C...
This is a part of the circuit diagram of NUCLEO-F429ZI.What do the symbols in the picture below mean? is the inductance ohm value?thank you.
According to RM0456, p. 3459So in addition to CCx pins also PB5 and PB14 (DBCCx) cannot be used. The above does not make much sense to me. I imagine (only imagine) that internally DBCC support is implemented like shown below and for "dead battery" to...
Hi,I am trying to use CC1 and CC3 inputs on TIM2 of STM32H7A3 to do some time-critial tasks (very ns fast time-stamping). I need to identify which CCxIF tiggered. Using STMCUBEIDE the skeleton interupt code worked fine in debug mode without the lines...
I've compiled my first program and I can't find a way to upload to the board.When I plug the USB, the onboard LED is lit, but my PC does not detect anything - I don't hear any "plug" sound, and I can't find any device in Device Manager (recognized no...
hey, I'm developing a custom stm32f405rgt6 board. I'm using stlink for uploading code. I'm comparitively new to stm as i've only worked with blue pill. I get "Error: No STM32 target found! If your product embeds Debug Authentication, please perform a...
Context: I am trying to read the Chip ID from a BMP280 sensor using SPI communication with an STM32 microcontroller. The expected Chip ID value is 0x58. However, I am encountering inconsistent results when calling the function to read the Chip ID mul...
Hi there,I've been using the NXP Kinetis MKL03Z32VFK4 Ultra-Low Power Cortex-M0+ MCU in our products, and it's been working well, but due to a major redesign, I'm looking for alternatives, and ST MCUs are promising.Specifically, I'm concerned about l...
