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)