
145
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
21.5
SAM-BA Boot
The SAM-BA boot principle is to:
– Check if USB Device enumeration has occurred
– Check if the Auto Baudrate sequence has succeeded (see
Figure 21-3)Figure 21-3. Auto Baudrate Flow Diagram
Device
Setup
Character '0x80'
received ?
No
Yes
Character '0x80'
received ?
No
Yes
Character '#'
received ?
Yes
Run SAM-BA Boot
Send Character '>'
No
1st measurement
2nd measurement
Test Communication
UART operational