fix analogRead not returning a value

[s2terminal]

Hello. I have been trying to get light using Grove LightSensor. I have run the following program, but at grovepi.analogRead the program gets stuck like an infinite loop and does not return any value. I have done the firmware updates and such that have been mentioned in other Issues, but the situation has not improved.

import grovepi
from time import sleep

while True:
    light = grovepi.analogRead(0)
    print(light)
    if light >= 100:
        print("light!")
    sleep(1)

I have modified grovepi.py as per this pull request. The program seems to be working fine. But to be honest, I'm not sure what I fixed. I'm not sure about this pull request.

def read_identified_i2c_block(read_command_id, no_bytes):
        data = [-1]
-       while data[0] != read_command_id[0]:
+       while len(data) <= 1:
                data = read_i2c_block(no_bytes + 1)

        return data[1:]

Related issues

• https://github.com/DexterInd/GrovePi/issues/442
• https://github.com/DexterInd/GrovePi/issues/451

Thanks.