Hello @jacobgeorge and welcome to the Community :)
Ensure that the UART peripheral is correctly configured, and that Tera Term is configured with the correct settings to match the UART configuration. This includes the correct COM port, baud rate, data bits, parity, and stop bits.
Here is an example configuration :
void UART_Init(void) {
UART_HandleTypeDef huart;
huart.Instance = USARTx; // Replace with your UART instance
huart.Init.BaudRate = 115200;
huart.Init.WordLength = UART_WORDLENGTH_8B;
huart.Init.StopBits = UART_STOPBITS_1;
huart.Init.Parity = UART_PARITY_NONE;
huart.Init.Mode = UART_MODE_TX_RX;
huart.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart.Init.OverSampling = UART_OVERSAMPLING_16;
if (HAL_UART_Init(&huart) != HAL_OK) {
// Initialization error
Error_Handler();
}
}
Check the physical connections between the board and the PC. Ensure that the TX and RX lines are properly connected, and that the USB cable is working correctly.
Ensure that the ST-LINK Virtual COM port is enabled and correctly configured.
I recommend you check one of the ready-to-use UART examples available in the STM32CubeL4 firmware package to identify what you have missed.
I suggest you debug and localize where the code hangs/stop: check if the UART transmit function is being called. You can set breakpoints and check the status of the UART peripheral and identify what is the problem that you see and when it occurs.
How to redirect the printf function to a UART for ... - STMicroelectronics Community
Otherwise, you can share your code, your ioc file or post some screenshots of the CubeMX configuration to check it.
When your question is answered, please close this topic by clicking "Accept as Solution".
Thanks
Imen
