From: Erik Andresen <erik@vontaene.de>
Date: Fri, 6 Sep 2019 06:12:02 +0000 (+0200)
Subject: bus_pirate: protect hw with lock
X-Git-Url: https://defiant.homedns.org/gitweb/?a=commitdiff_plain;h=d75dcf78890558e4b8e2ded3d734f769c217e0ef;p=pyshared.git

bus_pirate: protect hw with lock
---

diff --git a/bus_pirate.py b/bus_pirate.py
index cdd259f..d7c8eaf 100644
--- a/bus_pirate.py
+++ b/bus_pirate.py
@@ -3,6 +3,7 @@
 
 import serial
 import struct
+import threading
 
 dPinToBit = {
 		"POWER": 6,
@@ -18,14 +19,16 @@ dPinToBit = {
 # http://dangerousprototypes.com/docs/SPI_(binary)
 class BP:
 	def __init__(self, sDevice):
+		self.lock = threading.Lock()
 		self.pSerial = serial.Serial(sDevice, baudrate=115200, timeout=0.1)
 		self.mode_bit_bang()
 		self.io_state = 0
 		self.io_dir = 0
 
 	def command(self, cmd, num_read):
-		self.pSerial.write(cmd)
-		return self.pSerial.read(num_read)
+		with self.lock:
+			self.pSerial.write(cmd)
+			return self.pSerial.read(num_read)
 
 	def mode_bit_bang(self):
 		for i in range(20):