Part Number: TMS320F28P650DK
Hi,
I am trying to send messages from CPU1 to CPU2. Whenever a message is sent from CPU1, an interrupt is thrown in CPU2. In order to receive more messages in CPU2, I need to acknowledge the IPC flag in CPU2. The command I an using in CPU2 to acknowlege IPC flag is as follows:
Cpu2toCpu1IpcRegs.CPU2TOCPU1IPCACK.all |= ipcflag1;
However the above line does not serve the purpose and I don't receive the subsequent interrupts.
However If I use the line:
IPC_ackFlagRtoL(IPC_CPU2_L_CPU1_R, IPC_FLAG1);
I receive the subsequent interrupts.
I want to understand the difference between the two lines.
Few Observations on my side:
> In CCS, & Cpu2TOCpu1IpcRegs gives 0x000002
> In CCS, & Cpu2TOCpu1IpcRegs gives 0x000002
However on using the driverlib API, I see the change is made to the memory location 0x5cE00 which is the actual IPC base address.
In the CPU2Menory map file, I see following chunk of code:
Cpu2toCpu1IpcRegsFile
* 1 00000002 00000026 UNINITIALIZED
00000002 00000026 f28p65x_globalvariabledefs.obj (Cpu2toCpu1IpcRegsFile)
.cinit 0 00012000 00000068
00012000 0000000d (.cinit..data.load) [load image, compression = lzss]
0001200d 00000006 (.cinit.READFLAG1CPU2.load) [load image, compression = lzss]
00012013 00000006 (.cinit.READFLAG2CPU2.load) [load image, compression = lzss]
00012019 00000006 (.cinit.WRITEFLAG1CPU2.load) [load image, compression = lzss]
0001201f 00000006 (.cinit.WRITEFLAG2CPU2.load) [load image, compression = lzss]
00012025 00000001 --HOLE-- [fill = 0]
00012026 00000006 (__TI_handler_table)
0001202c 00000004 (.cinit..bss.load) [load image, compression = zero_init]
00012030 00000004 (.cinit.Cpu2toCpu1IpcRegsFile.load) [load image, compression = zero_init]
00012034 00000004 (.cinit.GETREADIDX.load) [load image, compression = zero_init]
00012038 00000004 (.cinit.PUTBUFFER.load) [load image, compression = zero_init]
0001203c 00000004 (.cinit.PUTWRITEIDX.load) [load image, compression = zero_init]
00012040 00000028 (__TI_cinit_table)
__TI_cinit_table @ 00012040 records: 10, size/record: 4, table size: 40
.data: load addr=00012000, load size=0000000d bytes, run addr=00010262, run size=00000011 bytes, compression=lzss
READFLAG1CPU2: load addr=0001200d, load size=00000006 bytes, run addr=0003b180, run size=00000020 bytes, compression=lzss
READFLAG2CPU2: load addr=00012013, load size=00000006 bytes, run addr=0003b1a0, run size=00000020 bytes, compression=lzss
WRITEFLAG1CPU2: load addr=00012019, load size=00000006 bytes, run addr=0003b140, run size=00000020 bytes, compression=lzss
WRITEFLAG2CPU2: load addr=0001201f, load size=00000006 bytes, run addr=0003b160, run size=00000020 bytes, compression=lzss
.bss: load addr=0001202c, load size=00000004 bytes, run addr=00010000, run size=00000262 bytes, compression=zero_init
Cpu2toCpu1IpcRegsFile: load addr=00012030, load size=00000004 bytes, run addr=00000002, run size=00000026 bytes, compression=zero_init
GETREADIDX: load addr=00012034, load size=00000004 bytes, run addr=0003b120, run size=00000020 bytes, compression=zero_init
PUTBUFFER: load addr=00012038, load size=00000004 bytes, run addr=0003b000, run size=00000100 bytes, compression=zero_init
PUTWRITEIDX: load addr=0001203c, load size=00000004 bytes, run addr=0003b100, run size=00000020 bytes, compression=zero_init
Thanks,
Mukul
