Hello,
I have an application that uses the Soft-Device. That application want to start a SPI-Bootloader. That SPI-Bootloader isn't the only bootloader on the device, so I just want the application to forward all interrupts to the SPI-Bootloader. The SPI-bootloader doesn't make use of the softdevice.
this is the code, that tries to start the bootloader:
void start_bootloader_without_sd( std::uint32_t start_address )
{
sd_softdevice_disable();
// set vector table of master bootrecord direct to the bootloaders start address
sd_mbr_command_t command = { SD_MBR_COMMAND_VECTOR_TABLE_BASE_SET };
command.params.base_set.address = start_address;
const auto rc = sd_mbr_command( &command );
static_cast< void >( rc );
assert( rc != NRF_SUCCESS );
NVIC_SystemReset();
}
After the final reset, the MBR does not forward the reset handler to the SPI bootloader. When I try to debug the startup, it looks like the MBR tries to start an application at 0xffffffff. In addion, I observed, that the RAM is inaccessable from the debugger.
According to the documentation, I would say, the code above should work, but it doesn't. Any idea, why it is not working as expected?
Softdevice is S310, version is 2.0.
kind regards,
Torsten
