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HAL_UART_Transmit_IT only send first letter

I am very new to use hal_usartTransmit_it because I use only usart_transmit() , which is the blocking mode.I changed all of my transmit() code to transmit_it() for better performance, but after that my ble send message only shows buffer's first lette...

DU2 by Associate II
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Resolved! How to call the function "_write (int file, char * ptr, int len)" when calling the function printf ("test")?

Hi.I am using stm32cubeide version 1.2.0. I am using stm32CubeMx version 5.6.1.The "int _write (int file, char * ptr, int len)" function is not called when the printf ("test") function is called.What did you do:1. Added to Properties ---> c / c ++ ...

STM32F722VC QSPI read problem, data lines are ignored

Hello!I am trying to read data by QSPI (MCU STM32F722VC). But QSPI always reads out the last value written to DR register by previous operation and does not read data from data lines. For exapmle, DR value is 0xAA from previous write operation. Then ...

Develop digital power with STM32G4 ,using a voltage control and a current loop.How could one FMAC realise two contorl loop?

In STM32CubeG4 Firmware Package, the G474 digiatal power demo use a FMAC to contol a buck or boost toplogy with one voltage control loop.So if I want to use two loops,one for voltage and other for current loop, could the FMAC(in my opinion,that is j...

ZYu.1 by Associate III
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Resolved! Distinguish GPIO port from external interrupt

Hello,I'm some confused how external interrupt is working with GPIO. If PA3 and PB3 are both configured as external interrupt, and assume the two interrupts are not coming simultaneously, how to determine which PIN generates the interrupt when EXTI3 ...

XLei.1 by Associate II
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CAN bit timing options?

I've been using the following two bit timings for a CAN bus speed of 500K on the STM32F103. I was just wondering which is better? Does it make any difference? Is there another preferred option? Thanks a lot for any insight. //(1+9+8)*4 = 72 //1+9+...

stm32 spi half-duplex transmit into receive mode

the target type is stm32f072, firstly the master transmit data success, slave receive data ok; should i need to disable spi ,enable BIDIOE in slave. but the slave can't transmit data, how to solve it?

Staly.1 by Associate III
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Resolved! STM32H743ZI SPI Fault/Freeze when reset

Hello Everybody,I am using the STM32H743ZI chip with STM32CubeIde. I have been having success with my code running in debug mode with the debugger attached. however when I power off the board and start it up there is a problem when the program start ...

TCash.1 by Associate III
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