Hi,Someone could help me, please?When I remove battery on my system (NO VDD and NO Vbat on the MCU), and I connect it back, the system do not start!!!!The only way to start the system is a NRST signal.ORSwitch OFF and ON only the VDD power supply (VB...
void sendchar(char c) { USART1->TDR = c; while(!(USART1->ISR & USART_ISR_TC)); }int main(void){ HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USART1_UART_Init(); while (1) { sendchar('a'); }}// gpio config for pb6 (tx) /*Transmission Pin ...
I'm programming a custom board built around the STM32F401 MCU and I'm having a hard time configuring the system clock.I'm using a 8MHz external crystal and I'm trying to set up the PLL to get the maximum frequency given by the datasheet, i.e. 84MHz. ...
Hello, I have issues with STM32H743 UART. I use Nucleo 144 and I need to get GPS frames on UART7 (at 9600 baud) and display them on UART4 (at 115200 baud). If nothing is sent on UART4, reception of frames on UART7 is good but I want to display some v...
For example, if two pins are set, via the Alternative Function registers, to be the rx and tx for a UART, but that UART is disabled, what state are the pins left in if the various GPIO registers are not changed?Does the rx pin remain an input, and th...
Hello, I am new to the whole stm32 environment. I've always used arduino in the past and I wanted to try something new for this project.I am having a really hard time setting up an i2c connection between a nucleo board (MASTER) and an arduino(SLAVE)....
Hi team, I am using STM32L052K8U6 package in my design. I need to configure the internal reference voltage instead of external reference voltage for ADC. Can i get any example program for same.
Hi,I am trying to get the NMEA data over UART and print it over another uart .But when i try read in loop after writing data to PC ,I'm not receiving any data. what could be the issue?any ideas ??
I am using stm32 L4 family microcontroller. I enabled MSC mode to copy files from SD card mounted to device to PC. But I want to know how can I monitor the status from my code running in MCU? My program should check whether file copy in progress, com...
Hello. I'm trying to receive data from W25Q128 via SPI. It works good, but too slow, if I don't use DMA. If I'm using DMA, it works faster, but only once, second query doesn't return data.I'm reading flash in main loop once in second this way, when d...
