mbed
Dependents: DHTSensor_Test K64F_eCompass_OneNET_JW
TARGET_ARCH_GPRS/TOOLCHAIN_GCC_ARM/LPC11U37.ld@0:2cc6bb4d7fea, 2015-02-25 (annotated)
- Committer:
- mbotkinl
- Date:
- Wed Feb 25 20:22:22 2015 +0000
- Revision:
- 0:2cc6bb4d7fea
Working code to read Temperature and Humidity readings
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbotkinl | 0:2cc6bb4d7fea | 1 | /* Linker script to configure memory regions. */ |
mbotkinl | 0:2cc6bb4d7fea | 2 | MEMORY |
mbotkinl | 0:2cc6bb4d7fea | 3 | { |
mbotkinl | 0:2cc6bb4d7fea | 4 | FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 128K |
mbotkinl | 0:2cc6bb4d7fea | 5 | RAM (rwx) : ORIGIN = 0x100000C0, LENGTH = 0x1F40 |
mbotkinl | 0:2cc6bb4d7fea | 6 | USB_RAM (rwx): ORIGIN = 0x20004000, LENGTH = 0x800 |
mbotkinl | 0:2cc6bb4d7fea | 7 | } |
mbotkinl | 0:2cc6bb4d7fea | 8 | |
mbotkinl | 0:2cc6bb4d7fea | 9 | /* Linker script to place sections and symbol values. Should be used together |
mbotkinl | 0:2cc6bb4d7fea | 10 | * with other linker script that defines memory regions FLASH and RAM. |
mbotkinl | 0:2cc6bb4d7fea | 11 | * It references following symbols, which must be defined in code: |
mbotkinl | 0:2cc6bb4d7fea | 12 | * Reset_Handler : Entry of reset handler |
mbotkinl | 0:2cc6bb4d7fea | 13 | * |
mbotkinl | 0:2cc6bb4d7fea | 14 | * It defines following symbols, which code can use without definition: |
mbotkinl | 0:2cc6bb4d7fea | 15 | * __exidx_start |
mbotkinl | 0:2cc6bb4d7fea | 16 | * __exidx_end |
mbotkinl | 0:2cc6bb4d7fea | 17 | * __etext |
mbotkinl | 0:2cc6bb4d7fea | 18 | * __data_start__ |
mbotkinl | 0:2cc6bb4d7fea | 19 | * __preinit_array_start |
mbotkinl | 0:2cc6bb4d7fea | 20 | * __preinit_array_end |
mbotkinl | 0:2cc6bb4d7fea | 21 | * __init_array_start |
mbotkinl | 0:2cc6bb4d7fea | 22 | * __init_array_end |
mbotkinl | 0:2cc6bb4d7fea | 23 | * __fini_array_start |
mbotkinl | 0:2cc6bb4d7fea | 24 | * __fini_array_end |
mbotkinl | 0:2cc6bb4d7fea | 25 | * __data_end__ |
mbotkinl | 0:2cc6bb4d7fea | 26 | * __bss_start__ |
mbotkinl | 0:2cc6bb4d7fea | 27 | * __bss_end__ |
mbotkinl | 0:2cc6bb4d7fea | 28 | * __end__ |
mbotkinl | 0:2cc6bb4d7fea | 29 | * end |
mbotkinl | 0:2cc6bb4d7fea | 30 | * __HeapLimit |
mbotkinl | 0:2cc6bb4d7fea | 31 | * __StackLimit |
mbotkinl | 0:2cc6bb4d7fea | 32 | * __StackTop |
mbotkinl | 0:2cc6bb4d7fea | 33 | * __stack |
mbotkinl | 0:2cc6bb4d7fea | 34 | */ |
mbotkinl | 0:2cc6bb4d7fea | 35 | ENTRY(Reset_Handler) |
mbotkinl | 0:2cc6bb4d7fea | 36 | |
mbotkinl | 0:2cc6bb4d7fea | 37 | SECTIONS |
mbotkinl | 0:2cc6bb4d7fea | 38 | { |
mbotkinl | 0:2cc6bb4d7fea | 39 | .text : |
mbotkinl | 0:2cc6bb4d7fea | 40 | { |
mbotkinl | 0:2cc6bb4d7fea | 41 | KEEP(*(.isr_vector)) |
mbotkinl | 0:2cc6bb4d7fea | 42 | *(.text.Reset_Handler) |
mbotkinl | 0:2cc6bb4d7fea | 43 | |
mbotkinl | 0:2cc6bb4d7fea | 44 | /* Only vectors and code running at reset are safe to be in first 512 |
mbotkinl | 0:2cc6bb4d7fea | 45 | bytes since RAM can be mapped into this area for RAM based interrupt |
mbotkinl | 0:2cc6bb4d7fea | 46 | vectors. */ |
mbotkinl | 0:2cc6bb4d7fea | 47 | . = 0x00000200; |
mbotkinl | 0:2cc6bb4d7fea | 48 | *(.text*) |
mbotkinl | 0:2cc6bb4d7fea | 49 | |
mbotkinl | 0:2cc6bb4d7fea | 50 | KEEP(*(.init)) |
mbotkinl | 0:2cc6bb4d7fea | 51 | KEEP(*(.fini)) |
mbotkinl | 0:2cc6bb4d7fea | 52 | |
mbotkinl | 0:2cc6bb4d7fea | 53 | /* .ctors */ |
mbotkinl | 0:2cc6bb4d7fea | 54 | *crtbegin.o(.ctors) |
mbotkinl | 0:2cc6bb4d7fea | 55 | *crtbegin?.o(.ctors) |
mbotkinl | 0:2cc6bb4d7fea | 56 | *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors) |
mbotkinl | 0:2cc6bb4d7fea | 57 | *(SORT(.ctors.*)) |
mbotkinl | 0:2cc6bb4d7fea | 58 | *(.ctors) |
mbotkinl | 0:2cc6bb4d7fea | 59 | |
mbotkinl | 0:2cc6bb4d7fea | 60 | /* .dtors */ |
mbotkinl | 0:2cc6bb4d7fea | 61 | *crtbegin.o(.dtors) |
mbotkinl | 0:2cc6bb4d7fea | 62 | *crtbegin?.o(.dtors) |
mbotkinl | 0:2cc6bb4d7fea | 63 | *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors) |
mbotkinl | 0:2cc6bb4d7fea | 64 | *(SORT(.dtors.*)) |
mbotkinl | 0:2cc6bb4d7fea | 65 | *(.dtors) |
mbotkinl | 0:2cc6bb4d7fea | 66 | |
mbotkinl | 0:2cc6bb4d7fea | 67 | *(.rodata*) |
mbotkinl | 0:2cc6bb4d7fea | 68 | |
mbotkinl | 0:2cc6bb4d7fea | 69 | KEEP(*(.eh_frame*)) |
mbotkinl | 0:2cc6bb4d7fea | 70 | } > FLASH |
mbotkinl | 0:2cc6bb4d7fea | 71 | |
mbotkinl | 0:2cc6bb4d7fea | 72 | .ARM.extab : |
mbotkinl | 0:2cc6bb4d7fea | 73 | { |
mbotkinl | 0:2cc6bb4d7fea | 74 | *(.ARM.extab* .gnu.linkonce.armextab.*) |
mbotkinl | 0:2cc6bb4d7fea | 75 | } > FLASH |
mbotkinl | 0:2cc6bb4d7fea | 76 | |
mbotkinl | 0:2cc6bb4d7fea | 77 | __exidx_start = .; |
mbotkinl | 0:2cc6bb4d7fea | 78 | .ARM.exidx : |
mbotkinl | 0:2cc6bb4d7fea | 79 | { |
mbotkinl | 0:2cc6bb4d7fea | 80 | *(.ARM.exidx* .gnu.linkonce.armexidx.*) |
mbotkinl | 0:2cc6bb4d7fea | 81 | } > FLASH |
mbotkinl | 0:2cc6bb4d7fea | 82 | __exidx_end = .; |
mbotkinl | 0:2cc6bb4d7fea | 83 | |
mbotkinl | 0:2cc6bb4d7fea | 84 | __etext = .; |
mbotkinl | 0:2cc6bb4d7fea | 85 | |
mbotkinl | 0:2cc6bb4d7fea | 86 | .data : AT (__etext) |
mbotkinl | 0:2cc6bb4d7fea | 87 | { |
mbotkinl | 0:2cc6bb4d7fea | 88 | __data_start__ = .; |
mbotkinl | 0:2cc6bb4d7fea | 89 | *(vtable) |
mbotkinl | 0:2cc6bb4d7fea | 90 | *(.data*) |
mbotkinl | 0:2cc6bb4d7fea | 91 | |
mbotkinl | 0:2cc6bb4d7fea | 92 | . = ALIGN(4); |
mbotkinl | 0:2cc6bb4d7fea | 93 | /* preinit data */ |
mbotkinl | 0:2cc6bb4d7fea | 94 | PROVIDE (__preinit_array_start = .); |
mbotkinl | 0:2cc6bb4d7fea | 95 | KEEP(*(.preinit_array)) |
mbotkinl | 0:2cc6bb4d7fea | 96 | PROVIDE (__preinit_array_end = .); |
mbotkinl | 0:2cc6bb4d7fea | 97 | |
mbotkinl | 0:2cc6bb4d7fea | 98 | . = ALIGN(4); |
mbotkinl | 0:2cc6bb4d7fea | 99 | /* init data */ |
mbotkinl | 0:2cc6bb4d7fea | 100 | PROVIDE (__init_array_start = .); |
mbotkinl | 0:2cc6bb4d7fea | 101 | KEEP(*(SORT(.init_array.*))) |
mbotkinl | 0:2cc6bb4d7fea | 102 | KEEP(*(.init_array)) |
mbotkinl | 0:2cc6bb4d7fea | 103 | PROVIDE (__init_array_end = .); |
mbotkinl | 0:2cc6bb4d7fea | 104 | |
mbotkinl | 0:2cc6bb4d7fea | 105 | |
mbotkinl | 0:2cc6bb4d7fea | 106 | . = ALIGN(4); |
mbotkinl | 0:2cc6bb4d7fea | 107 | /* finit data */ |
mbotkinl | 0:2cc6bb4d7fea | 108 | PROVIDE (__fini_array_start = .); |
mbotkinl | 0:2cc6bb4d7fea | 109 | KEEP(*(SORT(.fini_array.*))) |
mbotkinl | 0:2cc6bb4d7fea | 110 | KEEP(*(.fini_array)) |
mbotkinl | 0:2cc6bb4d7fea | 111 | PROVIDE (__fini_array_end = .); |
mbotkinl | 0:2cc6bb4d7fea | 112 | |
mbotkinl | 0:2cc6bb4d7fea | 113 | . = ALIGN(4); |
mbotkinl | 0:2cc6bb4d7fea | 114 | /* All data end */ |
mbotkinl | 0:2cc6bb4d7fea | 115 | __data_end__ = .; |
mbotkinl | 0:2cc6bb4d7fea | 116 | |
mbotkinl | 0:2cc6bb4d7fea | 117 | } > RAM |
mbotkinl | 0:2cc6bb4d7fea | 118 | |
mbotkinl | 0:2cc6bb4d7fea | 119 | .bss : |
mbotkinl | 0:2cc6bb4d7fea | 120 | { |
mbotkinl | 0:2cc6bb4d7fea | 121 | __bss_start__ = .; |
mbotkinl | 0:2cc6bb4d7fea | 122 | *(.bss*) |
mbotkinl | 0:2cc6bb4d7fea | 123 | *(COMMON) |
mbotkinl | 0:2cc6bb4d7fea | 124 | __bss_end__ = .; |
mbotkinl | 0:2cc6bb4d7fea | 125 | } > RAM |
mbotkinl | 0:2cc6bb4d7fea | 126 | |
mbotkinl | 0:2cc6bb4d7fea | 127 | .heap : |
mbotkinl | 0:2cc6bb4d7fea | 128 | { |
mbotkinl | 0:2cc6bb4d7fea | 129 | __end__ = .; |
mbotkinl | 0:2cc6bb4d7fea | 130 | end = __end__; |
mbotkinl | 0:2cc6bb4d7fea | 131 | *(.heap*) |
mbotkinl | 0:2cc6bb4d7fea | 132 | __HeapLimit = .; |
mbotkinl | 0:2cc6bb4d7fea | 133 | } > RAM |
mbotkinl | 0:2cc6bb4d7fea | 134 | |
mbotkinl | 0:2cc6bb4d7fea | 135 | /* .stack_dummy section doesn't contains any symbols. It is only |
mbotkinl | 0:2cc6bb4d7fea | 136 | * used for linker to calculate size of stack sections, and assign |
mbotkinl | 0:2cc6bb4d7fea | 137 | * values to stack symbols later */ |
mbotkinl | 0:2cc6bb4d7fea | 138 | .stack_dummy : |
mbotkinl | 0:2cc6bb4d7fea | 139 | { |
mbotkinl | 0:2cc6bb4d7fea | 140 | *(.stack) |
mbotkinl | 0:2cc6bb4d7fea | 141 | } > RAM |
mbotkinl | 0:2cc6bb4d7fea | 142 | |
mbotkinl | 0:2cc6bb4d7fea | 143 | /* Set stack top to end of RAM, and stack limit move down by |
mbotkinl | 0:2cc6bb4d7fea | 144 | * size of stack_dummy section */ |
mbotkinl | 0:2cc6bb4d7fea | 145 | __StackTop = ORIGIN(RAM) + LENGTH(RAM); |
mbotkinl | 0:2cc6bb4d7fea | 146 | __StackLimit = __StackTop - SIZEOF(.stack_dummy); |
mbotkinl | 0:2cc6bb4d7fea | 147 | PROVIDE(__stack = __StackTop); |
mbotkinl | 0:2cc6bb4d7fea | 148 | |
mbotkinl | 0:2cc6bb4d7fea | 149 | /* Check if data + heap + stack exceeds RAM limit */ |
mbotkinl | 0:2cc6bb4d7fea | 150 | ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack") |
mbotkinl | 0:2cc6bb4d7fea | 151 | } |