Skip to content
This repository
branch: master
Fetching contributors…

Octocat-spinner-32-eaf2f5

Cannot retrieve contributors at this time

file 214 lines (181 sloc) 6.443 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214
from Miner import Miner
from Queue import Empty
from ioutil import find_udev, find_serial_by_id, find_com_ports
from log import say_line, say_exception
from serial.serialutil import SerialException
from struct import pack, unpack, error
from sys import maxint
from time import time, sleep
from util import Object, uint32, bytereverse
import serial

CHECK_INTERVAL = 0.01


def open_device(port):
return serial.Serial(port, 115200, serial.EIGHTBITS, serial.PARITY_NONE, serial.STOPBITS_ONE, 1, False, False, 5, False, None)

def is_good_init(response):
return response and response[:31] == b'>>>ID: BitFORCE SHA256 Version ' and response[-4:] == b'>>>\n'

def init_device(device):
return request(device, b'ZGX')

def request(device, message):
if device:
device.flushInput()
device.write(message)
return device.readline()

def check(port, likely=True):
result = False
try:
device = open_device(port)
response = init_device(device)
device.close()
result = is_good_init(response)
except SerialException:
if likely:
say_exception()
if not likely and result:
say_line('Found BitFORCE on %s', port)
elif likely and not result:
say_line('No valid response from BitFORCE on %s', port)
return result

def initialize(options):
ports = find_udev(check, 'BitFORCE*SHA256') or find_serial_by_id(check, 'BitFORCE_SHA256') or find_com_ports(check)

if not options.device and ports:
print '\nBFL devices on ports:\n'
for i in xrange(len(ports)):
print '[%d]\t%s' % (i, ports[i])

miners = [
BFLMiner(i, ports[i], options)
for i in xrange(len(ports))
if (
(not options.device) or
(i in options.device)
)
]

for i in xrange(len(miners)):
miners[i].cutoff_temp = options.cutoff_temp[min(i, len(options.cutoff_temp) - 1)]
miners[i].cutoff_interval = options.cutoff_interval[min(i, len(options.cutoff_interval) - 1)]
return miners

class BFLMiner(Miner):
def __init__(self, device_index, port, options):
super(BFLMiner, self).__init__(device_index, options)
self.port = port
self.device_name = 'BFL:'+str(self.device_index)

self.check_interval = CHECK_INTERVAL
self.last_job = None
self.min_interval = maxint

def id(self):
return self.device_name

def is_ok(self, response):
return response and response == b'OK\n'

def put_job(self):
if self.busy: return

temperature = self.get_temperature()
if temperature < self.cutoff_temp:
response = request(self.device, b'ZDX')
if self.is_ok(response):
if self.switch.update_time:
self.job.time = bytereverse(uint32(long(time())) - self.job.time_delta)
data = b''.join([pack('<8I', *self.job.state), pack('<3I', self.job.merkle_end, self.job.time, self.job.difficulty)])
response = request(self.device, b''.join([b'>>>>>>>>', data, b'>>>>>>>>']))
if self.is_ok(response):
self.busy = True
self.job_started = time()

self.last_job = Object()
self.last_job.header = self.job.header
self.last_job.merkle_end = self.job.merkle_end
self.last_job.time = self.job.time
self.last_job.difficulty = self.job.difficulty
self.last_job.target = self.job.target
self.last_job.state = self.job.state
self.last_job.job_id = self.job.job_id
self.last_job.extranonce2 = self.job.extranonce2
self.last_job.server = self.job.server
self.last_job.miner = self

self.check_interval = CHECK_INTERVAL
if not self.switch.update_time or bytereverse(self.job.time) - bytereverse(self.job.original_time) > 55:
self.update = True
self.job = None
else:
say_line('%s: bad response when sending block data: %s', (self.id(), response))
else:
say_line('%s: bad response when submitting job (ZDX): %s', (self.id(), response))
else:
say_line('%s: temperature exceeds cutoff, waiting...', self.id())

def get_temperature(self):
response = request(self.device, b'ZLX')
if len(response) < 23 or response[0] != b'T' or response[-1:] != b'\n':
say_line('%s: bad response for temperature: %s', (self.id(), response))
return 0
return float(response[23:-1])

def check_result(self):
response = request(self.device, b'ZFX')
if response.startswith(b'B'): return False
if response == b'NO-NONCE\n': return response
if response[:12] != 'NONCE-FOUND:' or response[-1:] != '\n':
say_line('%s: bad response checking result: %s', (self.id(), response))
return None
return response[12:-1]

def nonce_generator(self, nonces):
for nonce in nonces.split(b','):
if len(nonce) != 8: continue
try:
yield unpack('<I', nonce.decode('hex')[::-1])[0]
except error:
pass

def mining_thread(self):
say_line('started BFL miner on %s', (self.id()))

while not self.should_stop:
try:
self.device = open_device(self.port)
response = init_device(self.device)
if not is_good_init(response):
say_line('Failed to initialize %s (response: %s), retrying...', (self.id(), response))
self.device.close()
self.device = None
sleep(1)
continue

last_rated = time()
iterations = 0

self.job = None
self.busy = False
while not self.should_stop:
if (not self.job) or (not self.work_queue.empty()):
try:
self.job = self.work_queue.get(True, 1)
except Empty:
if not self.busy:
continue
else:
if not self.job and not self.busy:
continue
targetQ = self.job.targetQ
self.job.original_time = self.job.time
self.job.time_delta = uint32(long(time())) - bytereverse(self.job.time)

if not self.busy:
self.put_job()
else:
result = self.check_result()
if result:
now = time()

self.busy = False
r = self.last_job
job_duration = now - self.job_started
self.put_job()

self.min_interval = min(self.min_interval, job_duration)

iterations += 4294967296
t = now - last_rated
if t > self.options.rate:
self.update_rate(now, iterations, t, targetQ)
last_rated = now; iterations = 0

if result != b'NO-NONCE\n':
r.nonces = result
self.switch.put(r)

sleep(self.min_interval - (CHECK_INTERVAL * 2))
else:
if result is None:
self.check_interval = min(self.check_interval * 2, 1)

sleep(self.check_interval)
except Exception:
say_exception()
if self.device:
self.device.close()
self.device = None
sleep(1)
Something went wrong with that request. Please try again.