开源FPGA比特比挖矿

#!/usr/bin/env python

# by teknohog

# Python wrapper for Xilinx Serial Miner

user = “teknohog.spartan“
password = “nexys2“
host = “api2.bitcoin.cz“
http_port = “8332“

serial_port = “/dev/ttyS0“

askrate = 5

###############################################################################

from jsonrpc import ServiceProxy
from time import ctime sleep time
from serial import Serial
from threading import Thread Event
from Queue import Queue

def stats（count starttime）:
    # 2**32 hashes per share （difficulty 1）
    mhshare = 4294.967296

    s = sum（count）
    tdelta = time（） - starttime
    rate = s * mhshare / tdelta

    # This is only a rough estimate of the true hash rate
    # particularly when the number of events is low. However since
    # the events follow a Poisson distribution we can estimate the
    # standard deviation （sqrt（n） for n events）. Thus we get some idea
    # on how rough an estimate this is.

    # s should always be positive when this function is called but
    # checking for robustness anyway
    if s > 0:
        stddev = rate / s**0.5
    else:
        stddev = 0

    return “[%i accepted %i failed %.2f +/- %.2f Mhash/s]“ % （count[0] count[1] rate stddev）

class Reader（Thread）:
    def __init__（self）:
        Thread.__init__（self）

        self.daemon = True

        # flush the input buffer
        ser.read（1000）

    def run（self）:
        while True:
            nonce = ser.read（4）

            if len（nonce） == 4:
                # Keep this order because writer.block will be
                # updated due to the golden event.
                submitter = Submitter（writer.block nonce）
                submitter.start（）
                golden.set（）


class Writer（Thread）:
    def __init__（self）:
        Thread.__init__（self）

        # Keep something sensible available while waiting for the
        # first getwork
        self.block = “0“ * 256
        self.midstate = “0“ * 64

        self.daemon = True

    def run（self）:
        while True:
            try:
                work = bitcoin.getwork（）
                self.block = work[‘data‘]
                self.midstate = work[‘midstate‘]
            except:
                print（“RPC getwork error“）
                # In this case keep crunching with the old data. It will get 
                # stale at some point but it‘s better than doing nothing.

            # Just a reminder of how Python slices work in reverse
            #rdata = self.block.decode（‘hex‘）[::-1]
            #rdata2 = rdata[32:64]
            rdata2 = self.block.decode（‘hex‘）[95:63:-1]

            rmid = self.midstate.decode（‘hex‘）[::-1]
            
            payload = rmid + rdata2
            
            ser.write（payload）
            
            result = golden.wait（askrate）

            if result:
                golden.clear（）

class Submitter（Thread）:
    def __init__（self block nonce）:
        Thread.__init__（self）

        self.block = block
        self.nonce = 

 属性            大小     日期    时间   名称
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    .......       224  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-master.gitignore

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    .......     35147  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterLICENSE.txt

    .......      1292  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Test3C120_uart_comm_Test.qpf

    .......     11773  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Test3C120_uart_comm_Test.qsf

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    .......       337  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Testhdl3C120_uart_comm_Test.v

    .......     16055  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Testhdlmain_pll.v

    .......        77  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_TestREADME.md

    .......     83008  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Teststp1.stp

    .......        14  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojects3C120_uart_comm_Testworking.gitignore

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    .......      4606  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojectsBeMicrofpgaminer.qsf

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    .......       235  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojectsBeMicroREADME.md

    .......      5034  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojectsBeMicrosrcfpgaminer_top.v

    .......      1248  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojectsDE2_115_makomk_modfpgaminer.qpf

    .......      4469  2013-07-17 23:10  Open-Source-FPGA-Bitcoin-Miner-masterprojectsDE2_115_makomk_modfpgaminer.qsf

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