Hi,
I'm trying to set up a USB host using a Nucleo144-F767ZI, which should exchange data with a Nucleo64-F103RB through USB. Since the Nucleo64 doesn't have a USB interface for the F103, I want to utilize the VCP (Virtual Com Port) of the ST-Link on the board. For a simple functionality test, I've configured both boards as follows:
Nucleo144-F767ZI:
- RCC: HSE BYPASS Clock Source
- USB_OTG_FS: Mode Host_Only
- Middleware USB_Host
- Communication Host Class (Virtual Port COM)
- Platform Settings Driver_VBUS_FS: GPIO Output PG6
In "usb_host.c," I've implemented the following variables and functions:
uint8_t rx_buffer[100];
uint8_t tx_buffer[] = "0123456789";
/* USER CODE BEGIN 0 */
void userFunction(void){
static uint32_t i = 0;
if (Appli_state == APPLICATION_READY) {
if ((HAL_GPIO_ReadPin(B1_GPIO_Port, B1_Pin) == GPIO_PIN_SET) && i > 0xffff) {
USBH_CDC_Transmit(&hUsbHostFS, tx_buffer, 10);
i = 0;
}
i++;
}
}
/* USER CODE END 0 */
/* USER CODE BEGIN 1 */
void USBH_CDC_TransmitCallback(USBH_HandleTypeDef *phost){
USBH_CDC_Receive(phost, rx_buffer, 10);
HAL_GPIO_TogglePin(LED0_GPIO_Port, LED0_Pin);
}
void USBH_CDC_ReceiveCallback(USBH_HandleTypeDef *phost){
HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin);
}
/* USER CODE END 1 */
The function "userFunction" is called cyclically in the while loop of the main function.
Nucleo64-F103RB:
I have implemented the following source code in main.c:
uint8_t data_tx[10];
uint8_t data_rx[10];
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart) {
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){
// if (!memcmp(data_rx, data_expected, sizeof(data_expected))) {
// HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
// HAL_UART_Transmit_IT(&huart2, (uint8_t *) data_tx, strlen(data_tx));
// }
HAL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
memcpy(data_tx, data_rx, sizeof(data_tx));
HAL_UART_Transmit_IT(&huart2, data_tx, sizeof(data_tx));
HAL_UART_Receive_IT(&huart2, data_rx, sizeof(data_rx));
memset (data_rx, '\0', sizeof(data_rx));
}
After initializing the peripherals in the main function, I call the function:
HAL_UART_Receive_IT(&huart2, data_rx, sizeof(data_rx));
I then connect the two devices using an appropriate USB cable. When I inspect the variable "HCD_HandleTypeDef hhcd_USB_OTG_FS" in the debug mode, its .gState is set to "HOST_ABORT_STATE" after a short period. Using the debugging function, I have determined that this state transition coincides with the UsrLog message "No registered class for this device."
I have tested the functionality of the Nucleo64-F103RB with a computer, and the communication works flawlessly using a serial monitor.
I hope someone can help me with my issue. Please let me know if any additional information is needed.
Best regards,
BC_1990
