FAQ LPC1519 编译结果多出4K RAM

[lpcware]

Content originally posted in LPCWare by devan888 on Tue Nov 17 03:07:19 CST 2015

有个难题一直困惑，请教各位帮助分析！

使用LPC1519在IAR下编译，输出MAP发现在command line: [2]处开始，到最后的 Linker created   36  4096，此处RAM开销了4096Byte，开销的内存是什么原因引起的？

有哪位了解的请赐教。。。

我有用FREERTOS，系统用到的内存有12K, 加上面的开销，就变成了16K, 有些吃不消！

我之前开LPC1114也用到FREERTOS, 上面开销不是4096，而是512，如果有办法改为512也可，但不知道如何修改。。。


*******************************************************************************
*** MODULE SUMMARY
***

    Module                 ro code  ro data  rw data
    ------                 -------  -------  -------
E:\workspace\NXP\SpringX_FreeRTOSV8.2.0_DEV20151024\applications\lpc15xx\iar_ewarm_projects\nxp_lpcspringX\ats\Release\Obj: [1]
    DS18b20Srv.o               524                 8
    FreeRTOSCommonHooks.o       40
    MMITimer.o                 384                96
    SpringApp.o                312
    adc.o                      900               908
    adc_15xx.o                 198
    ats.o                    1 100               236
    board.o                    104        8
    board_sysinit.o            312
    can_open_rom.o           1 360      116    2 273
    chip_15xx.o                164                 4
    clock_15xx.o               412
    cr_startup_lpc15xx.o       324                16
    ds18b20.o                  892                 1
    eeprom.o                   544               128
    gpio_15xx.o                 42
    heap_4.o                   348             8 216
    iar_startup_lpc15xx.o      276
    iocon_15xx.o                34
    list.o                     144
    mmi_ats_service.o          160                 4
    port.o                     456       16       16
    portasm.o                  148
    queue.o                  1 226                80
    ring_buffer.o               16
    rtc.o                      292                40
    sct_15xx.o                  36
    sct_pwm.o                  584                 4
    sct_pwm_15xx.o             132
    stdlib.o                   256
    swm_15xx.o                  76
    sys_msg.o                  316
    sysctl_15xx.o              124
    sysinit.o                    4
    sysinit_15xx.o              96
    tasks.o                  1 888      160      320
    timers.o                   772                60
    uart_15xx.o              1 416        4      244
    wwdt.o                     196
    wwdt_15xx.o                 58
    ------------------------------------------------
    Total:                  16 666      304   12 654

command line: [2]
    ------------------------------------------------
    Total:

dl7M_tln.a: [3]
    exit.o                       4
    low_level_init.o             4
    ------------------------------------------------
    Total:                       8

m7M_tl.a: [4]
    DblAdd.o                   232
    DblSub.o                   364
    DblToI32.o                  76
    FltMul.o                   216
    FltToDbl.o                  78
    FltToS32.o                  68
    I32ToFlt.o                  46
    ------------------------------------------------
    Total:                   1 080

rt7M_tl.a: [5]
    ABImemclr.o                  6
    ABImemclr4.o                 6
    ABImemset.o                102
    ABImemset48.o               50
    I64DivMod.o                238
    I64DivZer.o                  2
    XXexit.o                    12
    cexit.o                     10
    cmain.o                     26
    copy_init3.o                46
    cstartup_M.o                12
    data_init.o                 40
    zero_init3.o                34
    ------------------------------------------------
    Total:                     584

    Gaps                        22
    Linker created                       36  4096
----------------------------------------------------
    Grand Total:            18 360      340   16 750

[lpcware]

Content originally posted in LPCWare by devan888 on Thu Nov 19 19:06:34 CST 2015
好久没有回复，大家都没有遇到这样的情况吗？