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Inematov's avatar
Inematov
Icon for New Contributor rankNew Contributor
6 years ago

Hi all I am using the i2C IP Core. In NIOS i would like to get data from an Bosch BME280.

Now i get (console output) always the same value, nothing changes.. Also not if i try to get data from other geisters. So i believe i do something wrong, but i don`t know what.. or where to start sea...
AnandRaj_S_Intel's avatar
AnandRaj_S_Intel
Icon for Regular Contributor rankRegular Contributor
6 years ago

Hi,

  1. Temperature data may be randomly changing better read some other register.
  2. The tx buffer contains the 1-byte address, Is address (FA)correct ???

it should be 2 bytes FA & FB for temperature data.

Instead of reading temp data, read chip id and check if you are getting expected output for debugging.

Buffer[0]=D0;

alt_avalon_i2c_master_tx_rx(i2c_ptr,buffer,1,buffer,1,0);

Regards

Anand