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Commit 03649d9a authored by Paulus Kruger's avatar Paulus Kruger
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working version March 2021

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i2c/I2C.py.old 0 → 100644
+ 70
− 0
View file @ 03649d9a
import pylibi2c;
import time
import logging
#bus = pylibi2c.I2CDevice('/dev/i2c-1'
#read=0: write to register
#read=1: read from register
#read=2: write to register (common in group)
#read=3: wait ms second
I2Ccounter=0;
def I2C1server(addr,data,reg=None,read=0):
# print("I2C",addr,reg,data,read)
try:
if read==3:
time.sleep(data[0]/1000.)
return True
logging.debug(str(("I2C",addr,reg,data,read)))
# return True;
bus=pylibi2c.I2CDevice('/dev/i2c-1',addr)
if read==1:
length=len(data)
bus.iaddr_bytes=0
if not(reg is None):
bus.ioctl_write(0,str(bytearray([reg])))
data[:]=[int(x) for x in bus.ioctl_read(0,length)]
# print("I2C read",addr,reg,data,read)
else:
if reg is None:
bus.iaddr_bytes=0
reg=0;
bus.ioctl_write(reg,str(bytearray(data)))
bus.close()
return True;
except:
if bus: bus.close()
# data[0]=0xff
return False;
def I2C4server(addr,data,reg=None,read=0):
# print("I2C4",addr,reg,data,read)
try:
if read==3:
time.sleep(data[0]/1000.)
return True
logging.debug(str(("I2C",addr,reg,data,read)))
# print("I2C",addr,reg,data,read)
# return True;
bus=pylibi2c.I2CDevice('/dev/i2c-4',addr)
if read==1:
length=len(data)
bus.iaddr_bytes=0
if not(reg is None):
bus.ioctl_write(0,str(bytearray([reg])))
data[:]=[int(x) for x in bus.ioctl_read(0,length)]
# print(data)
else:
if reg is None:
bus.iaddr_bytes=0
reg=0;
bus.ioctl_write(reg,str(bytearray(data)))
bus.close()
return True;
except:
if bus: bus.close()
print("I2C4 error")
# data[0]=0xff
return False;
i2c/I2Cv2.py
+ 6
− 7
View file @ 03649d9a
......@@ -21,9 +21,8 @@ def I2C1server(addr,data,reg=None,read=0):
time.sleep(data[0]/1000.)
return True
logging.debug(str(("I2C",addr,reg,data,read)))
if read==1:
if not(reg is None): i2c1.transfer(addr,[I2C.Message(reg)])
if not(reg is None): i2c1.transfer(addr,[I2C.Message([reg])])
msgs=[I2C.Message(data,read=True)]
i2c1.transfer(addr,msgs)
data[:]=msgs[0].data
......@@ -31,15 +30,15 @@ def I2C1server(addr,data,reg=None,read=0):
if reg is None:
msgs=[I2C.Message(data)]
else:
msgs=[I2C.Message(reg),I2C.Message(data)]
msgs=[I2C.Message([reg]+data)]
i2c1.transfer(addr,msgs)
return True;
except:
return False;
i2c4=I2C("/dev/i2c-1")
i2c4=I2C("/dev/i2c-4")
def I2C1server(addr,data,reg=None,read=0):
def I2C4server(addr,data,reg=None,read=0):
# print("I2C",addr,reg,data,read)
try:
if read==3:
......@@ -48,7 +47,7 @@ def I2C1server(addr,data,reg=None,read=0):
logging.debug(str(("I2C",addr,reg,data,read)))
if read==1:
if not(reg is None): i2c4.transfer(addr,[I2C.Message(reg)])
if not(reg is None): i2c4.transfer(addr,[I2C.Message([reg])])
msgs=[I2C.Message(data,read=True)]
i2c4.transfer(addr,msgs)
data[:]=msgs[0].data
......@@ -56,7 +55,7 @@ def I2C1server(addr,data,reg=None,read=0):
if reg is None:
msgs=[I2C.Message(data)]
else:
msgs=[I2C.Message(reg),I2C.Message(data)]
msgs=[I2C.Message([reg]+data)]
i2c4.transfer(addr,msgs)
return True;
except:
......
i2c/setswitch.py
+ 4
− 2
View file @ 03649d9a
from I2C import *
import time
RCU=2
RCU=3
Ver="RCU2H v0.2"
R1=0
ROM=0x50
#Set switch
print("Set switch")
if not(I2C1server(0x70,[1<<RCU],reg=None,read=0)): exit() #select RCU
if not(I2C1server(0x70,[1<<RCU],reg=None,read=0)):
print("Error setting switch!")
exit() #select RCU
exit()
#Get ID
print("Get ID")
......
pypcc2.py
+ 1
− 0
View file @ 03649d9a
......@@ -33,6 +33,7 @@ if args.simulator:
from i2c import I2C_dummy as I2C
else:
from i2c import I2C
# from i2c import I2Cv2 as I2C
#Queue used to pass instructions from opc-ua server to RCU
Q1=queue.Queue() #RCUs
......
rcu/RCU.py
+ 14
− 8
View file @ 03649d9a
......@@ -198,6 +198,9 @@ class RCU1():
for RCUi in range(self.N):
self.SWcallback(1<<Vars.RCU_MPaddr.Switch[RCUi])
# print(Step,Step2,len(value1),V1.size)
WX=[0]
self.I2Ccallback(0x40,WX,reg=0,read=1)#wakeup, do nothing
self.I2Ccallback(0x40,[10],read=3)
i0=(RCUi*Step+ Vari)*Step2
i1=(RCUi*Step+(Vari+1))*Step2
value2=value1[i0:i1]
......@@ -271,6 +274,7 @@ class RCU1():
value[i]=ApplyMask(value[i],width,bitoffset,previous[i]);
self.previousHBA[RCUi,dev.store-1]=value
# if buffer: return True;
print("HBA set:",value);
XX=[0]
self.I2Ccallback(0x40,XX,reg=0,read=1)#wakeup, do nothing
self.I2Ccallback(dev.Addr,[10],read=3)
......@@ -278,7 +282,7 @@ class RCU1():
if L>16:
self.I2Ccallback(dev.Addr,[10],read=3)
self.I2Ccallback(dev.Addr,value[16:],reg=dev.Register_W+16)
self.I2Ccallback(dev.Addr,[600],reg=dev.Register_W,read=3) #Wait 500ms
self.I2Ccallback(dev.Addr,[600],read=3) #Wait 500ms
return True
# return self.I2Ccallback(dev.Addr,value,reg=dev.Register_W)
......@@ -357,11 +361,13 @@ class RCU1():
#print(width,len(value))
value2=value
reg=dev.Register_R
# if not(self.I2Ccallback(dev.Addr,[],reg=0x0)): return False;
if not(self.I2Ccallback(dev.Addr,value2,read=1)): return False;
if value2[0] is None: return False
value[:]=value2[:];
if dev.store>0:
self.previousHBA[RCUi,dev.store-1]=value
print("HBA ",RCUi,dev.Addr," received:",value);
# if dev.store>0: #This is disabled due to noise on readback
# self.previousHBA[RCUi,dev.store-1]=value[:]
for i in range(len(value)):
value[i]=UnMask(value[i],width,bitoffset)
return True;
......@@ -383,11 +389,11 @@ class RCU1():
return RCUthread1
def Queue_Monitor(self,Q1,NRCU):
Inst1=Vars.Instr(Vars.DevType.VarUpdate,Vars.RCU_temp,NRCU,[0]*NRCU)
Q1.put(Inst1)
Inst1=Vars.Instr(Vars.DevType.VarUpdate,Vars.RCU_ADC_lock,96,[0]*96)
Q1.put(Inst1)
return
Inst1=Vars.Instr(Vars.DevType.VarUpdate,Vars.RCU_temp,NRCU,[0]*NRCU)
Q1.put(Inst1)
Inst1=Vars.Instr(Vars.DevType.VarUpdate,Vars.RCU_ADC_lock,96,[0]*96)
Q1.put(Inst1)
return
def AddVars(self,Q1,AddVarR,AddVarW,AddVar):
self.statevar=AddVar("RCU_state_R","busy")
for v in Vars.OPC_devvars:
......
rcu/Vars.py
+ 5
− 1
View file @ 03649d9a
......@@ -44,9 +44,13 @@ HBA3_led =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA3,1,0,1)
HBA1_pwr =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA1,1,7,1)
HBA2_pwr =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA2,1,7,1)
HBA3_pwr =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA3,1,7,1)
HBA1_pwr2 =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA1,1,1,1)
HBA2_pwr2 =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA2,1,1,1)
HBA3_pwr2 =Var2dev("",RCUmod,DevType.HBA1,RCU_HBA3,1,1,1)
HBA_Delay=VarArray("HBA_element_beamformer_delays",3,[HBA1_Delay,HBA2_Delay,HBA3_Delay],RW.ReadWrite,datatype.dInt,96,None,None)
HBA_led =VarArray("HBA_element_led" ,3,[HBA1_led ,HBA2_led ,HBA3_led ],RW.ReadWrite,datatype.dInt,96,None,None)
HBA_pwr =VarArray("HBA_element_pwr" ,3,[HBA1_pwr ,HBA2_pwr ,HBA3_pwr ],RW.ReadWrite,datatype.dInt,96,None,None)
HBA_pwr2 =VarArray("HBA_element_pwr2" ,3,[HBA1_pwr2 ,HBA2_pwr2 ,HBA3_pwr2 ],RW.ReadWrite,datatype.dInt,96,None,None)
#RCU_ID0=Var2dev("",RCUmod,DevType.I2C,RCU_ROM,8,0,1)
#RCU_ID=VarArray("RCU_ID",1,[RCU_ID0],RW.ReadOnly,datatype.dInt,4,None,None)
......@@ -109,7 +113,7 @@ RCU_OUT2=VarArray("RCU_OUT2",3,[RCU_IO1_2,RCU_IO2_2,RCU_IO3_2],RW.ReadOnly,datat
#OPC_devvars=[RCU_mask,Ant_mask,RCU_att,RCU_band,RCU_temp,RCU_pwrd,RCU_LED,RCU_ID,RCU_VER,HBA_Delay,HBA_led]
#OPC_devvars=[RCU_mask,Ant_mask,RCU_att,RCU_band,RCU_temp,RCU_pwrd,RCU_LED,RCU_ID,RCU_VER,HBA_Delay,HBA_led,RCU_uCV_ID]
OPC_devvars=[RCU_mask,Ant_mask,RCU_att,RCU_band,RCU_temp,RCU_pwrd,RCU_LED,RCU_ADC_lock,RCU_ADC_SYNC,RCU_ADC_JESD,RCU_ADC_CML,RCU_OUT1,RCU_OUT2,RCU_ID,RCU_VER,HBA_Delay,HBA_led,HBA_pwr,RCU_uCV_ID]
OPC_devvars=[RCU_mask,Ant_mask,RCU_att,RCU_band,RCU_temp,RCU_pwrd,RCU_LED,RCU_ADC_lock,RCU_ADC_SYNC,RCU_ADC_JESD,RCU_ADC_CML,RCU_OUT1,RCU_OUT2,RCU_ID,RCU_VER,HBA_Delay,HBA_led,HBA_pwr,HBA_pwr2,RCU_uCV_ID]
#OPC_devvars=[RCU_mask,Ant_mask,RCU_att,RCU_band,RCU_temp,RCU_pwrd,RCU_LED,RCU_uCV_ID,RCU_uCV_spd0,RCU_uCV_RXspd1,RCU_uCV_RXspd2,RCU_uCV_TXspd1,RCU_uCV_debug ]#,HBA1_Pwr]#,RCU_CNF1,RCU_CNF2]
#Instr=namedtuple("DevInstr","type dev nvalue value")
#Instrs=namedtuple("Instr","name ninstr instr")
......
scripts/ADCreset.py
+ 3
− 3
View file @ 03649d9a
from test_common import *
RCUs=[2,3];
RCUs=[0,1,2,3];
setRCUmask(RCUs)
callmethod("RCU_off")
#callmethod("RCU_off")
#exit()
time.sleep(1)
#time.sleep(2)
callmethod("RCU_on")
#callmethod("RCU_on")
#time.sleep(1)
......
scripts/Att.py
+ 7
− 7
View file @ 03649d9a
from test_common import *
name="RCU_attenuator"
RCU=0;
Att=[5,5,5]
RCU=[0];
Att=[1,1,1]
setAntmask([RCU])
setAntmask(RCU)
att=get_value(name+"_R")
print("Att old:",att[3*RCU:3*RCU+3])
att[3*RCU:3*RCU+3]=Att
print("Att old:",att[:12])
for r in RCU:
att[3*r:3*r+3]=Att
set_value(name+"_RW",att)
time.sleep(0.5)
att=get_value(name+"_R")
print("Att new:",att[3*RCU:3*RCU+3])
print("Att new:",att[:12])
disconnect()
\ No newline at end of file
scripts/Band.py 0 → 100644
+ 20
− 0
View file @ 03649d9a
from test_common import *
name="RCU_band"
RCU=3;
Att=[3,3,3]
setAntmask([RCU])
att=get_value(name+"_R")
print("Att old:",att[3*RCU:3*RCU+3])
att[3*RCU:3*RCU+3]=Att
set_value(name+"_RW",att)
time.sleep(0.5)
att=get_value(name+"_R")
print("Att new:",att[3*RCU:3*RCU+3])
disconnect()
\ No newline at end of file
scripts/LED.py
+ 1
− 1
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......@@ -2,7 +2,7 @@ from test_common import *
name="RCU_LED0"
RCU=0;
LEDvalue=0;
LEDvalue=2;
setRCUmask([RCU])
......
scripts/RCUupdate.py
+ 1
− 1
View file @ 03649d9a
from test_common import *
RCUs=[0,1,2,3];
RCUs=[3];
setRCUmask(RCUs)
#for RCU in RCUs:
setAntmask(RCUs,[True,True,True])
......
scripts/SetHBAT_BF.py
+ 1
− 1
View file @ 03649d9a
......@@ -16,7 +16,7 @@ i=(RCU*3+HBAT)*32
val=get_value(name+"_R")
print("old:",val[i:i+32])
val[i:i+32]=np.array(range(32))[::]*0
val[i:i+32]=np.array(range(32))[::]*0+1
set_value(name+"_RW",val)
time.sleep(1)
......
scripts/SetHBAT_pwr.py
+ 3
− 2
View file @ 03649d9a
......@@ -26,15 +26,16 @@ set_value(name+"_RW",val)
#print(busy)
for x in range(10):
busy=get_value("RCU_state_R")
print(busy)
# print(busy)
if (busy=='busy'): break;
time.sleep(0.05)
while not(busy=='ready'):
busy=get_value("RCU_state_R")
print(busy)
# print(busy)
time.sleep(0.05)
val=get_value(name+"_R")
print("new:",val[i:i+32])
disconnect()
scripts/SetHBAT_pwr_loop.py 0 → 100644
+ 62
− 0
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RCU=3
HBAT=1 #HBAT on RCU 0..2
#HBA=5; #HBA Element in HBAT
#BFX=11 #delay in 0.5ns
#BFY=BFX+1
name="HBA_element_pwr"
from test_common import *
import numpy as np
AntMask=[(x==HBAT) for x in range(3)]
setAntmask([RCU],AntMask)
i=(RCU*3+HBAT)*32
val=get_value(name+"_R")
print("old:",val[i:i+32])
for ii in range(10):
val[i:i+32]=np.ones([32])
#val[i:i+32]=np.zeros([32])
set_value(name+"_RW",val)
#time.sleep(0.5)
#busy=get_value("RCU_state_R")
#print(busy)
for x in range(10):
busy=get_value("RCU_state_R")
# print(busy)
if (busy=='busy'): break;
time.sleep(0.05)
while not(busy=='ready'):
busy=get_value("RCU_state_R")
# print(busy)
time.sleep(0.05)
val=get_value(name+"_R")
print("new:",val[i:i+32])
#val[i:i+32]=np.ones([32])
val[i:i+32]=np.zeros([32])
set_value(name+"_RW",val)
#time.sleep(0.5)
#busy=get_value("RCU_state_R")
#print(busy)
for x in range(10):
busy=get_value("RCU_state_R")
# print(busy)
if (busy=='busy'): break;
time.sleep(0.05)
while not(busy=='ready'):
busy=get_value("RCU_state_R")
# print(busy)
time.sleep(0.05)
val=get_value(name+"_R")
print("new:",val[i:i+32])
disconnect()
scripts/SetMonitor.py
+ 1
− 1
View file @ 03649d9a
from test_common import *
rate= 60 #seconds
rate= 10 #seconds
name="RCU_monitor_rate_RW"
print("old:",get_value(name))
......
scripts/i2clinetest.py 0 → 100644
+ 17
− 0
View file @ 03649d9a
#from gpiozero import LED,Button
import RPi.GPIO as GPIO
#SCL=3
#SDA=2
SCL=24
SDA=23
GPIO.setmode(GPIO.BCM)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA ",GPIO.input(SDA))
print("SCL ",GPIO.input(SCL))
GPIO.cleanup()
scripts/i2creset.py 0 → 100644
+ 43
− 0
View file @ 03649d9a
#from gpiozero import LED,Button
import RPi.GPIO as GPIO
SCL=3
SDA=2
GPIO.setmode(GPIO.BCM)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA=",GPIO.input(SDA))
print("SCL=",GPIO.input(SCL))
GPIO.cleanup()
exit()
GPIO.setmode(GPIO.BCM)
print("Clock")
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.OUT)
for x in range(10):
GPIO.output(SCL,0)
print("SDA=",GPIO.input(SDA))
GPIO.output(SCL,1)
print("SDA=",GPIO.input(SDA))
print("STOP")
#GPIO.setup(SCL,GPIO.OUT)
GPIO.output(SCL,0)
GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,1)
GPIO.output(SDA,1)
GPIO.setup(SDA,GPIO.IN)
print("SDA=",GPIO.input(SDA))
GPIO.cleanup()
#SCL=LED(9)
#SDA=Button(8)
#if Button.is_pressed: print("High")
#SCL.on()
#SCL.off()
scripts/i2creset2.py 0 → 100644
+ 71
− 0
View file @ 03649d9a
#from gpiozero import LED,Button
import RPi.GPIO as GPIO
SCL=3
SDA=2
Addr=0x70 #SWITCH
#Addr=0x20 #io expander
Value=0
data=[(Addr<<1)+0,Value] #Write
#data=[Addr<<1+1] #Read
GPIO.setmode(GPIO.BCM)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
#GPIO.setup(SDA,GPIO.OUT)
GPIO.setup(SCL,GPIO.OUT)
#GPIO.output(SDA,1)
GPIO.output(SCL,1)
#Start
#GPIO.output(SDA,0)
GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,0)
for b in data:
ba="{0:{fill}8b}".format(b,fill='0')
print("Sending",ba)
for bit in ba:
if int(bit)==0:
GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
else:
GPIO.setup(SDA,GPIO.IN)
# GPIO.output(SDA,int(bit))
GPIO.output(SCL,1)
GPIO.output(SCL,0)
GPIO.setup(SDA,GPIO.IN)
# GPIO.output(SDA,0)
# print("Ack",GPIO.input(SDA)==0)
# GPIO.setup(SDA,GPIO.OUT)
#ack clock
GPIO.output(SCL,1)
# GPIO.setup(SDA,GPIO.IN)
print("Ack",GPIO.input(SDA)==0)
# GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SCL,0)
print("Ack released",GPIO.input(SDA)==1)
#Stop
#GPIO.output(SDA,0)
GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,1)
GPIO.output(SDA,1)
#GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
GPIO.cleanup()
scripts/i2creset2b.py 0 → 100644
+ 70
− 0
View file @ 03649d9a
#from gpiozero import LED,Button
import RPi.GPIO as GPIO
SCL=3
SDA=2
Addr=0x70 #SWITCH
#Addr=0x20 #io expander
Value=0
data=[(Addr<<1)+0,Value] #Write
#data=[Addr<<1+1] #Read
GPIO.setmode(GPIO.BCM)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
GPIO.setup(SDA,GPIO.OUT)
GPIO.setup(SCL,GPIO.OUT)
GPIO.output(SDA,1)
GPIO.output(SCL,1)
#Start
#GPIO.output(SDA,0)
#GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,0)
for b in data:
ba="{0:{fill}8b}".format(b,fill='0')
print("Sending",ba)
for bit in ba:
# if int(bit)==0:
# GPIO.setup(SDA,GPIO.OUT)
# GPIO.output(SDA,0)
# else:
# GPIO.setup(SDA,GPIO.IN)
GPIO.output(SDA,int(bit))
GPIO.output(SCL,1)
GPIO.output(SCL,0)
GPIO.setup(SDA,GPIO.IN)
# GPIO.output(SDA,0)
# print("Ack",GPIO.input(SDA)==0)
# GPIO.setup(SDA,GPIO.OUT)
#ack clock
GPIO.output(SCL,1)
# GPIO.setup(SDA,GPIO.IN)
print("Ack",GPIO.input(SDA)==0)
GPIO.output(SCL,0)
print("Ack released",GPIO.input(SDA)==1)
GPIO.setup(SDA,GPIO.OUT)
#Stop
#GPIO.output(SDA,0)
#GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,1)
GPIO.output(SDA,1)
#GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
GPIO.cleanup()
scripts/i2cresetCLK.py 0 → 100644
+ 70
− 0
View file @ 03649d9a
#from gpiozero import LED,Button
import RPi.GPIO as GPIO
SCL=24
SDA=23
Addr=0x20 #SWITCH
#Addr=0x20 #io expander
Value=0
data=[(Addr<<1)+0,Value] #Write
#data=[Addr<<1+1] #Read
GPIO.setmode(GPIO.BCM)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
GPIO.setup(SDA,GPIO.OUT)
GPIO.setup(SCL,GPIO.OUT)
GPIO.output(SDA,1)
GPIO.output(SCL,1)
#Start
#GPIO.output(SDA,0)
#GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,0)
for b in data:
ba="{0:{fill}8b}".format(b,fill='0')
print("Sending",ba)
for bit in ba:
# if int(bit)==0:
# GPIO.setup(SDA,GPIO.OUT)
# GPIO.output(SDA,0)
# else:
# GPIO.setup(SDA,GPIO.IN)
GPIO.output(SDA,int(bit))
GPIO.output(SCL,1)
GPIO.output(SCL,0)
GPIO.setup(SDA,GPIO.IN)
# GPIO.output(SDA,0)
# print("Ack",GPIO.input(SDA)==0)
# GPIO.setup(SDA,GPIO.OUT)
#ack clock
GPIO.output(SCL,1)
# GPIO.setup(SDA,GPIO.IN)
print("Ack",GPIO.input(SDA)==0)
GPIO.output(SCL,0)
print("Ack released",GPIO.input(SDA)==1)
GPIO.setup(SDA,GPIO.OUT)
#Stop
#GPIO.output(SDA,0)
#GPIO.setup(SDA,GPIO.OUT)
GPIO.output(SDA,0)
GPIO.output(SCL,1)
GPIO.output(SDA,1)
#GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SDA,GPIO.IN)
GPIO.setup(SCL,GPIO.IN)
print("SDA high",GPIO.input(SDA)==1)
print("SCL high",GPIO.input(SCL)==1)
GPIO.cleanup()
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