def read_from_rpi_to_esp32():
try:
# change 1 of SMBus(1) to bus number on your RPI
smbus = SMBus(1)
# prepare the data
packed = None
with Packer() as packer:
packer.write(register)
packer.end()
packed = packer.read()
raw_list = None
smbus.write_bytes(register, bytearray(packed))
time.sleep(0.3) # wait i2c process the request
raw_list = list(
smbus.read_bytes(register, 5)
) # the read_bytes contains the data format: first, length, data, crc8, end bytes
print(raw_list)
# let's clean received data
unpacked = None
with Unpacker as unpacker:
unpacker.write(raw_list)
unpacked = unpacker.read()
return unpacked
except Exception as e:
print("ERROR: {}".format(e))
def read_from_rpi_to_esp32():
try:
# prepare the data
packed = None
with Packer() as packer:
packer.write(value)
packer.end()
packed = packer.read()
print("in packer")
# change 1 of SMBus(1) to bus number on your RPI
raw_list = None
with SMBus(1) as smbus:
smbus.write_bytes(slave_address, bytearray(packed)) #how would the slave know whether to write or receive?
time.sleep(0.3) # wait i2c process the request
raw_list = list(smbus.read_bytes(slave_address, 5)) # the read_bytes contains the data format: first, length, data, crc8, end bytes
rawList = smbus.read_byte(slave_address)
#print(rawList)
print(raw_list)
print("in smbus")
# let's clean received data
unpacked = None
with Unpacker() as unpacker:
print("unpacker 1")
unpacker.write(raw_list)
print("unpacker 2")
unpacked = unpacker.read()
print("in unpacker")
return unpacked
except Exception as e:
print("ERROR: {}".format(e))
def test_packer(self):
packed = None
with Packer() as packer:
packer.write(127)
packer.end()
packed = [i for i in packer.read() if i != 0]
expected = [2, 5, 127, 185, 4]
self.assertIsNotNone(packed)
self.assertTrue(type(packed).__name__ == "list")
self.assertEqual(expected, packed)
def write_from_rpi_to_esp32():
try:
# change 1 of SMBus(1) to bus number on your RPI
smbus = SMBus(1)
# prepare the data
packed = None
with Packer() as packer:
packer.write(register)
packer.write(value)
packer.end()
packed = packer.read()
smbus.write_bytes(register, bytearray(packed))
except Exception as e:
print("ERROR: {}".format(e))