
WIRELESS CONNECTIVITY & SENSORS
User manual Proteus-III
7.3. Transmit and receive data
7.3.1. CMD_DATA_REQ
This command provides the simple data transfer between two connected modules. Transmis-
sion takes place to the previously connected device(s). This command is suitable for transmis-
sion for a point-to-point connection. The number of payload data Bytes is negotiated during the
connection phase. It can be maximal 243 Bytes, but at least 19 Bytes.
When the data is processed by the module a
is sent to the host. Additionally a
will follow as soon as the data has been sent.
The receiving Proteus-III will get a
message containing the transmitted payload
data.
In "high throughput mode" the length of data packets may be up to 964 Bytes. Format:
Start signal
Command
Length
Payload
CS
0x02
0x04
2 Bytes
Length Bytes
1 Byte
Response (
Start signal
Command | 0x40
Length
Status
CS
0x02
0x44
2 Bytes
Length Bytes
1 Byte
Status:
0x00:
Request received, will send data now
0x01 + 0xXX:
Operation 0xXX maximum payload size (if it was exceeded)
0xFF:
Operation not permitted
7.3.2. CMD_TXCOMPLETE_RSP
This command is sent to the host as soon as the data, which was requested by a
has been transmitted successfully.
Format:
Start signal
Command
Length
Status
CS
0x02
0xC4
0x01 0x00
1 Byte
1 Byte
Status:
0x00:
Data transmitted successfully
0x01:
Data transmission failed
Order code 2611011024000
78
Version 1.8 , July 2022