UART stm32F767ZI

[Samuel1]

Hello everybody,

i wanted to send data from realterm serial to the stm32F767ZI but it dose not work. i cant see any message on my terminal. The same code is working good with STMF446re. The UART2 with STM32F4446re is connected to the USB Port. but with stm32F767ZI i am not sure and i searched in datasheet to find any info but i did not find. please i need your help.

#[UART/USART]​ #I2C​ 

[Tesla DeLorean]

Perhaps try looking at the F7 HAL code examples?

The NUCLEO-F767ZI likely uses a different USART and pins.

//****************************************************************************
 
void OutChar(char c)
{
  while((USART3->ISR & USART_ISR_TXE) == 0); // Wait for Empty
  USART_RS232->TDR = c; // Send Char
}
 
//****************************************************************************
 
void USART3_Init(void) // USART3 PD8/PD9 NUCLEO VCP
{
  GPIO_InitTypeDef GPIO_InitStruct = { 0 };
  UART_HandleTypeDef UartHandle = { 0 };
 
  __USART3_CLK_ENABLE();
  __GPIOD_CLK_ENABLE();
 
  /* UART RX/TX GPIO pin configuration  */
  GPIO_InitStruct.Pin       = GPIO_PIN_8 | GPIO_PIN_9;
  GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
  GPIO_InitStruct.Pull      = GPIO_PULLUP;
  GPIO_InitStruct.Speed     = GPIO_SPEED_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF7_USART3;
 
  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
 
  /*## Configure the UART peripheral ######################################*/
  /* Put the USART peripheral in the Asynchronous mode (UART Mode) */
  /* UART1 configured as follow:
      - Word Length = 8 Bits
      - Stop Bit = One Stop bit
      - Parity = NO parity
      - BaudRate = 115200 baud
      - Hardware flow control disabled (RTS and CTS signals) */
  UartHandle.Instance        = USART3;
 
  UartHandle.Init.BaudRate   = 115200;
  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
  UartHandle.Init.StopBits   = UART_STOPBITS_1;
  UartHandle.Init.Parity     = UART_PARITY_NONE;
  UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;
  UartHandle.Init.Mode       = UART_MODE_TX_RX;
 
  UartHandle.Init.OverSampling   = UART_OVERSAMPLING_16;
#ifdef UART_ONE_BIT_SAMPLE_DISABLE
  UartHandle.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
#endif
 
  if (HAL_UART_Init(&UartHandle) != HAL_OK)
  {
    /* Initialization Error */
    Error_Handler();
  }
}
 
//****************************************************************************

[Peter Mather]

Assuming you are using the same UART and that is valid on the same port/pinno combinations then it is almost certainly the alternate function setting.

For example UART 5 on the H743 and F767 can both be PB12/PB13 but one is GPIO_AF14_UART5 and the other GPIO_AF8_UART5

[S.Ma]

Compare the UART register description in the reference manuals to see if both come from the same design IP version.

SPI has 3 versions, UART probably 2+ (one on the H7 has FIFOs)