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led.S

    .thumb
    .syntax unified
    .equ GPIOC_CRH,   0x40011004
    .equ GPIOC_ODR,   0x4001100c
    .equ RCC_APB2ENR, 0x40021018
    .equ STACKINIT,   0x20005000
    .equ LEDDELAY,    800000

    .global _start
    .section .text
    .org 0x0
    .word STACKINIT
    .word _start

    .org 0x100
    .thumb_func
_start:
    ldr r6, =RCC_APB2ENR
    mov r0, 0x10
    str r0, [r6]
    ldr r6, =GPIOC_CRH
    ldr r0, =0x44344444
    str r0, [r6]
    mov r2, 0
    mov r3, 0x2000
    ldr r6, =GPIOC_ODR
loop:
    str r2, [r6]
    ldr r1, =LEDDELAY
delay1:
    subs r1, 1
    bne delay1
    str r3, [r6]
    ldr r1, =LEDDELAY
delay2:
    subs r1, 1
    bne delay2
    b loop

led.ld

SECTIONS
{
    . = 0x0;
    .text : 
    {
        *(.text)
    }
    .data : 
    {
        *(.data)
        *(.rom)
    }
    . = 0x20000000;
    .ram : { *(.ram) }
 
    .bss : 
    {
        *(.bss)
        *(.ram)
    }
}

Makefile

all:
	arm-none-eabi-as -mcpu=cortex-m3 -mthumb -mthumb-interwork -o led.o led.S
	arm-none-eabi-ld -T led.ld -o led.elf led.o
	arm-none-eabi-objcopy -O binary led.elf led.bin

clean:
	rm -rf led.o
	rm -rf led.elf
	rm -rf led.bin

編譯(Linux Deploy)

$ make
    arm-none-eabi-as -mcpu=cortex-m3 -mthumb -mthumb-interwork -o led.o led.S
    arm-none-eabi-ld -T led.ld -o led.elf led.o
    arm-none-eabi-objcopy -O binary led.elf led.bin

接腳：

燒錄

$ tsudo openocd -f /data/data/com.termux/files/usr/share/openocd/scripts/interface/stlink-v2.cfg -f /data/data/com.termux/files/usr/share/openocd/scripts/target/stm32f1x.cfg

$ telnet localhost 4444
> halt
> flash erase_sector 0 0 0
> flash write_bank 0 /data/data/com.termux/files/home/led.bin 0
> reset init
> resume 

完成