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GD32 USBFS&USBHS Firmware Library User Guide
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Figure 5-10. Virtual serial data transmitting and receiving
For mass data test, it is necessary to add send byte number, and configure Timing sending
function in serial debugging assistant, which is shown in
Figure 5-11. Virtual serial port large
data transmitting and receiving
Figure 5-11. Virtual serial port large data transmitting and receiving
5.7.3.
DFU
DFU is specific protocol for upgrading firmware, without non-zero endpoint, only endpoint 0
is used in data transfer course. DFU protocol flow is drived by state machine, which is shown
as
