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Hello everybody! This is my first message on thi board. Is there anybody on this board doing In Application Programming by application, running on Rowley CTL kernel? |
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Using IAP in a CrossWorks Tasking Library (CTL) application
Started by ●March 1, 2005
Reply by ●March 1, 20052005-03-01
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Hi Eli, We ship the source code of the flash loader in the CrossWorks for ARM distribution which could be a place to start. Other things to beware of is that the code must be executing in RAM (place the functions in the .fast section) and you'll have to disable global interrupts to avoid a task switch in the middle of the flash programming. Regards Michael >Hello everybody! >This is my first message on thi board. >Is there anybody on this board doing In Application Programming by >application, running on Rowley CTL kernel? > > >Yahoo! Groups Links > |
Reply by ●March 1, 20052005-03-01
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Hi Michael, Probably I will have to write some separate code loader application, to be run in RAM. My software download scenario is as follows: 1. The CTL application runs normally and then it receives START_PROGRAM_DOWNLOAD command (through some proprietary serial protocol). 2. I presume that the command processor task will have to disable IRQ and FIQ interrupts (I use both of them), copy a ram runnable image of software loader application from flash to RAM, and start it. 3. Probably the loader application can be a CTL application too. It will respond only to software download part of the serial communication protocol. The reason, I want to run a CTL application for the download is that I want to use the same serial drivers and the same RS-422 Tx driver enable/disable timing mechanism, I use in the main application. Every time a RECEIVE_PROGRAM_RECORD command is received, it may call an IAP function to program the flash. 4. After the software download completes, an END_PROGRAM_DOWNLOAD command is received. On reception, the loader application will disable all interrupts, and reboot the LPC2106. I will be glad to have your remarks. In addition, if there is anybody on the board that already did IAP inside a CTL application and wants to share the experience, it may be of benefit to all the board members. Many thanks, Eli. --- In , Michael Johnson <mpj@r...> wrote: > Hi Eli, > > We ship the source code of the flash loader in the CrossWorks for ARM > distribution which could be a place to start. Other things to beware of > is that the code must be executing in RAM (place the functions in the > .fast section) and you'll have to disable global interrupts to avoid a > task switch in the middle of the flash programming. > > Regards > Michael > > >Hello everybody! > >This is my first message on thi board. > >Is there anybody on this board doing In Application Programming by > >application, running on Rowley CTL kernel? > > > > > > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > |
