Microchip Technology RN4870 - Page 37

 2016 Microchip Technology Inc. DS50002466A-page 37
2.6.27 O[,0]
Command O puts the module into Dormant mode that consumes little power. It accepts
one optional input parameter: 0.
In Power-Saving mode (refer to command SO 2.4.19), UART_RX_IND pin must be
pulled high before entering Dormant mode. If the input parameter is 0, then RN4870/71
enters Dormant mode immediately, without giving any response. If any other input
parameter or no input parameter is entered, RN4870/71 returns AOK message, without
performing any additional function, thus enabling RN4870/71 to automatically enter
Power-Saving mode (running 32 kHz clock).
2.6.28
R,1
This command forces a complete device reboot (similar to a power cycle). It has one
mandatory parameter of 1. After rebooting RN4870/71, all prior made setting changes
takes effect.
2.6.29
T,<hex16>,<hex16>,<hex16>,<hex16>
Command T is used to change the following connection parameters: interval, latency
and supervision timeout for current connection. The parameters of command T are lost
after power cycle. All parameters are 16-bit values in hex format. Command T is only
effective if active connection exists when the command is issued.
For the definitions, ranges and relationships of connection interval, latency and time-
out, refer to Section2.4.23“ST,<hex16>,<hex16>,<hex16>,<hex16>” for com-
mand ST and Table 2-7 for details.
When command T with valid parameters is issued by the peripheral device, minimum
interval of timeout is required between two connection parameter update requests. The
decision on whether to accept the connection parameter update request is up to the
central device. When RN4870/71 acts as a central device, it accepts all valid connec-
tion parameter update requests.
Example: O,0 // Enter low-power Dormant mode
Response:
AOK
// No response if input parameter is 0
// Success
Example: R,1 // Reboot device
Response:
%REBOOT%
// Rebooting
// Status string
Default: Interval: 0020; Latency: 0000; Timeout: 0200
Example: T,0190,0190,0001,03E8 // Request Connection Parameter to
// be interval 400 ms, latency 1,
// and timeout 1000 ms
Response: AOK
ERR
%ERR_CONNPARM%
// Success
// Syntax error or invalid parameter
// Status string