I2C

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ciao tutti,
sto realizzando un semplice progetto con arduino mega e la gsm shield: si tratta di rilevare alcuni semplici parametri ambientali (temperatura, pressione, umidità) con il sensore bme280 e registrarli sul database di un server remoto utilizzando la gsm shield (quectel m10).
sia il bme280 che la gsm shield, separatamente, funzionano correttamente mentre unendo il codice per realizzare ciò che desidero la procedura si pianta.
dopo un po' (forse non la totalità) di controlli mi è venuto in mente che forse c'è un conflitto tra l'uso della comunicazione i2c da parte del bme280 con arduino e la gsm shield...
e' realista la mia ipotesi? qualcuno ha già verificato questo problema (e risolto)?
googlando non ho trovato molto quindi confido in una vostra paziente risposta...
grazie in anticipo

il sensore usa come indirizzo 0x77 ("by default, i2c address 0x77.  if add jumper sdo gnd, address change 0x76."), il gsm shield qual è esattamente e quale indirizzo ha?


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