def wait_unlocked(self, timeout_ms):
"""
Waits for the device to be unlocked.
All devices boot up as locked until proven otherwise
"""
timeout = Timeout(timeout_ms)
while not timeout.expired():
if not self.datalink.ldcs(constants.UPDI_ASI_SYS_STATUS) & (1 << constants.UPDI_ASI_SYS_STATUS_LOCKSTATUS):
return True
self.logger.info("Timeout waiting for device to unlock")
return False
def wait_flash_ready(self):
"""
Waits for the NVM controller to be ready
"""
timeout = Timeout(10000) # TODO 10 sec timeout, just to be sure
self.logger.info("Wait flash ready")
while not timeout.expired():
status = self.datalink.ld(self.device.nvmctrl_address + constants.UPDI_NVMCTRL_STATUS)
if status & (1 << constants.UPDI_NVM_STATUS_WRITE_ERROR):
self.logger.info("NVM error")
return False
if not status & ((1 <<constants.UPDI_NVM_STATUS_EEPROM_BUSY) | (1 << constants.UPDI_NVM_STATUS_FLASH_BUSY)):
return True
self.logger.error("Wait flash ready timed out")
return False