Datasheet

SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
422
24.5 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.
̶ Output: ‘>’.
 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 following by ‘>’
 Send a file (S): Send a file to a specified address
̶ Address: Address in hexadecimal
̶ Output: ‘>’.
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
̶ Output: ‘>’
 Go (G): Jump to a specified address and execute the code
̶ Address: Address to jump in hexadecimal
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#