smallsolar/PySGP30
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Still dosnt work but now it compiles

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This commit is contained in:
Simon Albinsson
2018-04-12 16:10:46 +00:00
parent 4369939459
commit 65317ef504
1 changed files with 17 additions and 16 deletions
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33
sgp30/sgp30.py
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@@ -38,15 +38,16 @@ class Sgp30():
Sgp30Answer = namedtuple("Sgp30Answer",["data","raw"]) Sgp30Answer = namedtuple("Sgp30Answer",["data","raw"])
def read_write(cmd,bus,addr=DEVICE_ADDR): def read_write(self,cmd):
write = i2c_msg.write(addr,cmd.commands) write = i2c_msg.write(self._device_addr,cmd.commands)
if cmd.replylen <= 0 : if cmd.replylen <= 0 :
bus.i2c_rdwr(write) self._bus.i2c_rdwr(write)
else: else:
read = i2c_msg.read(addr,cmd.replylen) read = i2c_msg.read(self._device_addr,cmd.replylen)
bus.i2c_rdwr(write) bus.i2c_rdwr(write)
sleep(waittime/1000.0) self._bus.i2c_rdwr(write)
bus.i2c_rdwr(read) bus.i2c_rdwr(read)
self._bus.i2c_rdwr(read)
r = list(read) r = list(read)
answer = [i<<8 | j for i,j in zip(r[0::3],r[1::3])] answer = [i<<8 | j for i,j in zip(r[0::3],r[1::3])]
return Sgp30Answer(answer,r) return Sgp30Answer(answer,r)
@@ -62,17 +63,16 @@ class Sgp30():
else: else:
if len(baseline) == 6: if len(baseline) == 6:
print("Loading baseline data into sensor") print("Loading baseline data into sensor")
rw(baseline_cmd) self.rw(baseline_cmd)
def init_sgp(bus): def init_sgp(self):
print("Initializing SGP30") print("Initializing SGP30")
rw(IAQ_INIT) self.rw(IAQ_INIT)
print("Waiting for sensor warmup") self.try_set_baseline()
try_set_baseline()
#print(rw(SET_BASELINE)) #print(rw(SET_BASELINE))
sleep(15) print("Waiting for sensor warmup")
def i2c_geral_call(bus): def i2c_geral_call(self):
"""This attempts to reset _ALL_ devices on the i2c buss """This attempts to reset _ALL_ devices on the i2c buss
This command issues the i2c-general call RW command that should result This command issues the i2c-general call RW command that should result
@@ -82,7 +82,7 @@ class Sgp30():
This will usually un-stick the SGP30, but might reset or otherwise This will usually un-stick the SGP30, but might reset or otherwise
affect any device on the bus. affect any device on the bus.
""" """
bus.write_byte(0,0x06) self._bus.write_byte(0,0x06)
sleep(.1) sleep(.1)
def store_baseline(n): def store_baseline(n):
@@ -91,9 +91,7 @@ def store_baseline(n):
baseline= rw(GET_BASELINE) baseline= rw(GET_BASELINE)
json.dump(baseline.raw,conf) json.dump(baseline.raw,conf)
if __name__ == "__main__": def main():
main()
main():
with SMBusWrapper(1) as bus: with SMBusWrapper(1) as bus:
rw=partial(read_write,bus=bus) rw=partial(read_write,bus=bus)
i2c_geral_call(bus) i2c_geral_call(bus)
@@ -119,3 +117,6 @@ main():
sleep(1 - elapsed ) sleep(1 - elapsed )
bus.close() bus.close()
if __name__ == "__main__":
main()