Tushar Sachdeva / FRDM_K64F_LCD

A simple 128x32 graphical LCD program to quickstart with LCD on ARM mbed IoT Starter Kit. This requires mbed Applciation Shield with FRDM-K64F platform.

Dependencies:   C12832

mbed/TARGET_NRF51_DONGLE/TOOLCHAIN_GCC_ARM/NRF51822.ld@1:eb68c94a8ee5, 2015-04-12 (annotated)

Committer:
tushki7
Date:
Sun Apr 12 15:45:52 2015 +0000
Revision:
1:eb68c94a8ee5
Parent:
0:60d829a0353a 
A simple 128x32 LCD program with ARM mbed IoT Starter Kit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tushki7 0:60d829a0353a 1 /* Linker script to configure memory regions. */
tushki7 0:60d829a0353a 2
tushki7 0:60d829a0353a 3 MEMORY
tushki7 0:60d829a0353a 4 {
tushki7 0:60d829a0353a 5 FLASH (rx) : ORIGIN = 0x00016000, LENGTH = 0x2A000
tushki7 0:60d829a0353a 6 RAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x6000
tushki7 0:60d829a0353a 7 }
tushki7 0:60d829a0353a 8
tushki7 0:60d829a0353a 9 OUTPUT_FORMAT ("elf32-littlearm", "elf32-bigarm", "elf32-littlearm")
tushki7 0:60d829a0353a 10
tushki7 0:60d829a0353a 11 /* Linker script to place sections and symbol values. Should be used together
tushki7 0:60d829a0353a 12 * with other linker script that defines memory regions FLASH and RAM.
tushki7 0:60d829a0353a 13 * It references following symbols, which must be defined in code:
tushki7 0:60d829a0353a 14 * Reset_Handler : Entry of reset handler
tushki7 0:60d829a0353a 15 *
tushki7 0:60d829a0353a 16 * It defines following symbols, which code can use without definition:
tushki7 0:60d829a0353a 17 * __exidx_start
tushki7 0:60d829a0353a 18 * __exidx_end
tushki7 0:60d829a0353a 19 * __etext
tushki7 0:60d829a0353a 20 * __data_start__
tushki7 0:60d829a0353a 21 * __preinit_array_start
tushki7 0:60d829a0353a 22 * __preinit_array_end
tushki7 0:60d829a0353a 23 * __init_array_start
tushki7 0:60d829a0353a 24 * __init_array_end
tushki7 0:60d829a0353a 25 * __fini_array_start
tushki7 0:60d829a0353a 26 * __fini_array_end
tushki7 0:60d829a0353a 27 * __data_end__
tushki7 0:60d829a0353a 28 * __bss_start__
tushki7 0:60d829a0353a 29 * __bss_end__
tushki7 0:60d829a0353a 30 * __end__
tushki7 0:60d829a0353a 31 * end
tushki7 0:60d829a0353a 32 * __HeapLimit
tushki7 0:60d829a0353a 33 * __StackLimit
tushki7 0:60d829a0353a 34 * __StackTop
tushki7 0:60d829a0353a 35 * __stack
tushki7 0:60d829a0353a 36 */
tushki7 0:60d829a0353a 37 ENTRY(Reset_Handler)
tushki7 0:60d829a0353a 38
tushki7 0:60d829a0353a 39 SECTIONS
tushki7 0:60d829a0353a 40 {
tushki7 0:60d829a0353a 41 .text :
tushki7 0:60d829a0353a 42 {
tushki7 0:60d829a0353a 43 KEEP(*(.Vectors))
tushki7 0:60d829a0353a 44 *(.text*)
tushki7 0:60d829a0353a 45
tushki7 0:60d829a0353a 46 KEEP(*(.init))
tushki7 0:60d829a0353a 47 KEEP(*(.fini))
tushki7 0:60d829a0353a 48
tushki7 0:60d829a0353a 49 /* .ctors */
tushki7 0:60d829a0353a 50 *crtbegin.o(.ctors)
tushki7 0:60d829a0353a 51 *crtbegin?.o(.ctors)
tushki7 0:60d829a0353a 52 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
tushki7 0:60d829a0353a 53 *(SORT(.ctors.*))
tushki7 0:60d829a0353a 54 *(.ctors)
tushki7 0:60d829a0353a 55
tushki7 0:60d829a0353a 56 /* .dtors */
tushki7 0:60d829a0353a 57 *crtbegin.o(.dtors)
tushki7 0:60d829a0353a 58 *crtbegin?.o(.dtors)
tushki7 0:60d829a0353a 59 *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
tushki7 0:60d829a0353a 60 *(SORT(.dtors.*))
tushki7 0:60d829a0353a 61 *(.dtors)
tushki7 0:60d829a0353a 62
tushki7 0:60d829a0353a 63 *(.rodata*)
tushki7 0:60d829a0353a 64
tushki7 0:60d829a0353a 65 KEEP(*(.eh_frame*))
tushki7 0:60d829a0353a 66 } > FLASH
tushki7 0:60d829a0353a 67
tushki7 0:60d829a0353a 68
tushki7 0:60d829a0353a 69 .ARM.extab :
tushki7 0:60d829a0353a 70 {
tushki7 0:60d829a0353a 71 *(.ARM.extab* .gnu.linkonce.armextab.*)
tushki7 0:60d829a0353a 72 } > FLASH
tushki7 0:60d829a0353a 73
tushki7 0:60d829a0353a 74 __exidx_start = .;
tushki7 0:60d829a0353a 75 .ARM.exidx :
tushki7 0:60d829a0353a 76 {
tushki7 0:60d829a0353a 77 *(.ARM.exidx* .gnu.linkonce.armexidx.*)
tushki7 0:60d829a0353a 78 } > FLASH
tushki7 0:60d829a0353a 79 __exidx_end = .;
tushki7 0:60d829a0353a 80
tushki7 0:60d829a0353a 81 __etext = .;
tushki7 0:60d829a0353a 82
tushki7 0:60d829a0353a 83 .data : AT (__etext)
tushki7 0:60d829a0353a 84 {
tushki7 0:60d829a0353a 85 __data_start__ = .;
tushki7 0:60d829a0353a 86 *(vtable)
tushki7 0:60d829a0353a 87 *(.data*)
tushki7 0:60d829a0353a 88
tushki7 0:60d829a0353a 89 . = ALIGN(4);
tushki7 0:60d829a0353a 90 /* preinit data */
tushki7 0:60d829a0353a 91 PROVIDE_HIDDEN (__preinit_array_start = .);
tushki7 0:60d829a0353a 92 KEEP(*(.preinit_array))
tushki7 0:60d829a0353a 93 PROVIDE_HIDDEN (__preinit_array_end = .);
tushki7 0:60d829a0353a 94
tushki7 0:60d829a0353a 95 . = ALIGN(4);
tushki7 0:60d829a0353a 96 /* init data */
tushki7 0:60d829a0353a 97 PROVIDE_HIDDEN (__init_array_start = .);
tushki7 0:60d829a0353a 98 KEEP(*(SORT(.init_array.*)))
tushki7 0:60d829a0353a 99 KEEP(*(.init_array))
tushki7 0:60d829a0353a 100 PROVIDE_HIDDEN (__init_array_end = .);
tushki7 0:60d829a0353a 101
tushki7 0:60d829a0353a 102
tushki7 0:60d829a0353a 103 . = ALIGN(4);
tushki7 0:60d829a0353a 104 /* finit data */
tushki7 0:60d829a0353a 105 PROVIDE_HIDDEN (__fini_array_start = .);
tushki7 0:60d829a0353a 106 KEEP(*(SORT(.fini_array.*)))
tushki7 0:60d829a0353a 107 KEEP(*(.fini_array))
tushki7 0:60d829a0353a 108 PROVIDE_HIDDEN (__fini_array_end = .);
tushki7 0:60d829a0353a 109
tushki7 0:60d829a0353a 110 *(.jcr)
tushki7 0:60d829a0353a 111 . = ALIGN(4);
tushki7 0:60d829a0353a 112 /* All data end */
tushki7 0:60d829a0353a 113 __data_end__ = .;
tushki7 0:60d829a0353a 114
tushki7 0:60d829a0353a 115 } > RAM
tushki7 0:60d829a0353a 116
tushki7 0:60d829a0353a 117 .bss :
tushki7 0:60d829a0353a 118 {
tushki7 0:60d829a0353a 119 . = ALIGN(4);
tushki7 0:60d829a0353a 120 __bss_start__ = .;
tushki7 0:60d829a0353a 121 *(.bss*)
tushki7 0:60d829a0353a 122 *(COMMON)
tushki7 0:60d829a0353a 123 . = ALIGN(4);
tushki7 0:60d829a0353a 124 __bss_end__ = .;
tushki7 0:60d829a0353a 125 } > RAM
tushki7 0:60d829a0353a 126
tushki7 0:60d829a0353a 127 .heap (COPY):
tushki7 0:60d829a0353a 128 {
tushki7 0:60d829a0353a 129 __end__ = .;
tushki7 0:60d829a0353a 130 end = __end__;
tushki7 0:60d829a0353a 131 *(.heap*)
tushki7 0:60d829a0353a 132 __HeapLimit = .;
tushki7 0:60d829a0353a 133 } > RAM
tushki7 0:60d829a0353a 134
tushki7 0:60d829a0353a 135 /* .stack_dummy section doesn't contains any symbols. It is only
tushki7 0:60d829a0353a 136 * used for linker to calculate size of stack sections, and assign
tushki7 0:60d829a0353a 137 * values to stack symbols later */
tushki7 0:60d829a0353a 138 .stack_dummy (COPY):
tushki7 0:60d829a0353a 139 {
tushki7 0:60d829a0353a 140 *(.stack*)
tushki7 0:60d829a0353a 141 } > RAM
tushki7 0:60d829a0353a 142
tushki7 0:60d829a0353a 143 /* Set stack top to end of RAM, and stack limit move down by
tushki7 0:60d829a0353a 144 * size of stack_dummy section */
tushki7 0:60d829a0353a 145 __StackTop = ORIGIN(RAM) + LENGTH(RAM);
tushki7 0:60d829a0353a 146 __StackLimit = __StackTop - SIZEOF(.stack_dummy);
tushki7 0:60d829a0353a 147 PROVIDE(__stack = __StackTop);
tushki7 0:60d829a0353a 148
tushki7 0:60d829a0353a 149 /* Check if data + heap + stack exceeds RAM limit */
tushki7 0:60d829a0353a 150 ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
tushki7 0:60d829a0353a 151 }