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/**
 * @brief USB_SERIAL_JTAG read bytes from USB_SERIAL_JTAG buffer
 *
 * @param buf     pointer to the buffer.
 * @param length  data length
 * @param ticks_to_wait Timeout in RTOS ticks
 *
 * @return
 *     - The number of bytes read from USB_SERIAL FIFO
 */
int usb_serial_jtag_read_bytes(void* buf, uint32_t length, TickType_t ticks_to_wait);

/**
 * @brief Send data to the USB-UART port from a given buffer and length,
 *
 * Please ensure the `tx_buffer_size is larger than 0`, if the 'tx_buffer_size' > 0, this function will return after copying all the data to tx ring buffer,
 * USB_SERIAL_JTAG ISR will then move data from the ring buffer to TX FIFO gradually.
 *
 * @param src   data buffer address
 * @param size  data length to send
 * @param ticks_to_wait Maximum timeout in RTOS ticks
 *
 * @return
 *     - The number of bytes pushed to the TX FIFO
 */
int usb_serial_jtag_write_bytes(const void* src, size_t size, TickType_t ticks_to_wait);