Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
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24.6 SAM-BA Monitor
The SAM-BA boot principle:
Once the communication interface is identified, to run in an infinite loop waiting for different commands as shown
in Table 24-2.
 Mode commands:
̶ Normal mode configures SAM-BA Monitor to send/receive data in binary format
̶ Terminal mode configures SAM-BA Monitor to send/receive data in ASCII format
 Write commands: Write a byte (O), a halfword (H) or a word (W) to the target
̶ Address: Address in hexadecimal
̶ Value: Byte, halfword or word to write in hexadecimal
 Read commands: Read a byte (o), a halfword (h) or a word (w) from the target
̶ Address: Address in hexadecimal
̶ Output: The byte, halfword or word read in hexadecimal
 Send a file (S): Send a file to a specified address
̶ Address: Address in hexadecimal
Note: There is a time-out on this command which is reached when the prompt ‘>’ appears before the end of the command
execution.
 Receive a file (R): Receive data into a file from a specified address
̶ Address: Address in hexadecimal
̶
NbOfBytes: Number of bytes in hexadecimal to receive
 Go (G): Jump to a specified address and execute the code
̶ Address: Address to jump in hexadecimal
 Get Version (V): Return the SAM-BA boot version
Note: In Terminal mode, when the requested command is performed, SAM-BA Monitor adds the following prompt sequence
to its answer: <LF>+<CR>+'>'.
Table 24-2. Commands Available through the SAM-BA Boot
Command Action Argument(s) Example
N Set Normal mode No argument N#
T Set Terminal mode No argument T#
O Write a byte Address, Value# O200001,CA#
o Read a byte Address,# o200001,#
H Write a half word Address, Value# H200002,CAFE#
h Read a half word Address,# h200002,#
W Write a word Address, Value# W200000,CAFEDECA#
w Read a word Address,# w200000,#
S Send a file Address,# S200000,#
R Receive a file Address, NbOfBytes# R200000,1234#
G Go Address# G200200#
V Display version No argument V#