Technical information
Chapter 3: KJAVA Architecture
July 15, 2008 G24 KJAVA User’s Guide 3-3
KMgr assigned pin depends on the hardware configuration (OEM or HMI) as described in
Table 3-1.
Also refer to“GPIO Lines”and reference [2].
Switching between MIDlet Manager and JTool Manager
without GPIO Pin Toggling
Switching between MIDlet Manager and JTool Manager can also be done using dedicated
commands.
To switch from MIDlet Manager to JTool Manager - send the command "MMgr2JToolSwitch"
over UART2 serial interface; G24 will send back 'JTOOL READY'.
The necessary pre-conditions for successful operation of the command are:
• MIDlet Manager is active
• KMgr pin is ON (in MIDlet Manger state)
• UART2 is not used by a MIDlet, KDWP or any other agent
If these pre-conditions are not met, the command will be ignored.
To switch from JTool Manager to MIDlet Manager, issue the command "JT2MM" in terminal.
The necessary pre-conditions for successful operation of the command are:
• JTool Manager is active
• KMgr pin is ON (in MIDlet Manger state)
If these pre-conditions are not met, the command will fail with JTool Error.
Note: This option is present mainly for easier production process. It allows scripts to download
a MIDlet without the need to manually toggle the KMgr pin back and forth.
Table 3-1: KMgr Pin
G24 HW Type
Pin Number in 70 Pin
Connector
GPIO Pin Name EVB Switch
OEM 42 GPIO8 S120, GPIO8 reference
HMI 16 WKUPI_N/GPIO16 S100 WKUPI_N