When DFU finishes loading firmware and jumps to the application, it
leaves the mapping of addresses starting at 0x0 set to System flash,
which prevents the boot loader from receiving interrupts and requires
a power cycle during flash & cal.
Signed-off-by: Keith Packard <keithp@keithp.com>
#endif
}
#endif
-#if RELOCATE_INTERRUPT
/* Turn on syscfg */
stm_rcc.apb2enr |= (1 << STM_RCC_APB2ENR_SYSCFGCOMPEN);
+#if RELOCATE_INTERRUPT
memcpy(&__interrupt_start__, &__interrupt_rom__, &__interrupt_end__ - &__interrupt_start__);
stm_syscfg.cfgr1 = (stm_syscfg.cfgr1 & ~(STM_SYSCFG_CFGR1_MEM_MODE_MASK << STM_SYSCFG_CFGR1_MEM_MODE)) |
(STM_SYSCFG_CFGR1_MEM_MODE_SRAM << STM_SYSCFG_CFGR1_MEM_MODE);
+#else
+ /* Switch to Main Flash mode (DFU loader leaves us in System mode) */
+ stm_syscfg.cfgr1 = (stm_syscfg.cfgr1 & ~(STM_SYSCFG_CFGR1_MEM_MODE_MASK << STM_SYSCFG_CFGR1_MEM_MODE)) |
+ (STM_SYSCFG_CFGR1_MEM_MODE_MAIN_FLASH << STM_SYSCFG_CFGR1_MEM_MODE);
#endif
memcpy(&__data_start__, &__text_end__, &__data_end__ - &__data_start__);
memset(&__bss_start__, '\0', &__bss_end__ - &__bss_start__);