nRF51822のflashをCMSIS-DAPで消すツール(要pyOCD)

erase_nrf51822.py

#!/usr/bin/env python

import argparse
from time import sleep, time
from struct import unpack
import sys
import subprocess

from pyOCD.interface import INTERFACE, usb_backend
from pyOCD.board import MbedBoard

import logging

VID = 0x0D28
PID = 0x0204

NVMC_READY      = 0x4001E400
NVMC_CONFIG     = 0x4001E504
NVMC_ERASEPAGE  = 0x4001E508
NVMC_ERASEALL   = 0x4001E50C
NVMC_ERASEUIR   = 0x4001E514

if __name__ == "__main__":
    
    adapter = None
    try:
        interfaces = INTERFACE[usb_backend].getAllConnectedInterface(VID, PID)
        if interfaces == None:
            print "Not find a mbed interface"
            sys.exit(1)
            
        # Use the first one
        first_interface = interfaces[0]
        adapter = MbedBoard("target_lpc1768", "flash_lpc1768", first_interface)
        adapter.init()
        target = adapter.target
        target.halt()
        target.writeMemory(NVMC_CONFIG, 2)
        target.writeMemory(NVMC_ERASEALL, 1)
        while target.readMemory(NVMC_READY) == 0:
            pass
        print "Target erased"
        sleep(1)
        target.reset()
        
    finally:
        if adapter != None:
            adapter.uninit()