Debugging from board
I have a microcontroller stm32 series on one PCB board.I tried to debugg the memory with the st link v2 mini dongle and utility software.but couldn't connect.
STM32 MCUs Products
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ST7789
According to the datasheet, what is the maximum speed of the ST7789 for the SPI protocol? If we use an LCD with the ST7789 driver and connect it via the SPI protocol to a microcontroller, would we get higher speed with the STM32G0B0CET6 microcontroll...
Resolved! allocation of global variable SD-RAM external memory.
The 'HAL_SDRAM_Write_8b' and 'HAL_SDRAM_Read_8b' functions were confirmed using STM32H723ZGT6 and IS42S16320D-6TLI.(Check variable value changes with STM32CubeIDE's Memory Viewer and LiveWatch, no hardware problems)All internal RAM has been used to i...
Resolved! BOOT0 pin and BOOT bits
I am using an STM32 G474RE NUCLEO board. Is it necessary for me to configure the BOOT0 pin and the BOOT bits in the FLASH_OPTR register if I am going to program the chip using the SWDIO and SWCLK pins with an ST-LINK V2?
bit shift >> and & operation
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()...
Series resistors calculations for any interfaces
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...
Resolved! stm32f429 tim8 in up count mode, update interrupt couldn't generate 10Mhz PWM.
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...
Resolved! What do the following symbols mean in the NUCLEO-F429ZI circuit diagram?
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.
UCPD and DBCC (dead battery) doubts
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...
Resolved! Long delay in setting TIM status register bits
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...
