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stm32/f1/vector: add ability to boot to DFU bootloader

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note: Only works on CL devices
also: this could probably use a helper function
This commit is contained in:
Jeff Ciesielski 2012-10-19 16:30:27 -07:00
parent be4ee41ef9
commit 153e81bc96
1 changed files with 9 additions and 0 deletions
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9
lib/stm32/f1/vector.c
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@ -191,10 +191,19 @@ void (*const vector_table[]) (void) = {
otg_fs_isr, /* Addr: 0x0000_014C */ otg_fs_isr, /* Addr: 0x0000_014C */
}; };
#include <stdint.h>
void reset_handler(void) void reset_handler(void)
{ {
volatile unsigned *src, *dest; volatile unsigned *src, *dest;
uint32_t reset_str = *((uint32_t *)0x2000FFF0);
if (reset_str == 0xDEADBEEF) {
*((uint32_t *)0x2000FFF0) = 0x00;
asm("ldr r0, =0x1fffb000");
asm("ldr sp, [r0, #0]");
asm("ldr r0, [r0, #4]");
asm("bx r0");
}
__asm__("MSR msp, %0" : : "r"(&_stack)); __asm__("MSR msp, %0" : : "r"(&_stack));
for (src = &_data_loadaddr, dest = &_data; dest < &_edata; src++, dest++) for (src = &_data_loadaddr, dest = &_data; dest < &_edata; src++, dest++)