Hi Hans, looking in the datasheet of the TMP421 sensor chip http://focus.ti.com/docs/prod/folders/print/tmp421.html, I saw the following addresses. TMP421 100 11xx TMP422 100 11xx TMP423A 100 1100 TMP423B 100 1101 But the preliminary driver of your students uses 0x2a. /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x2a, I2C_CLIENT_END }; 0x2a == 010 1010b, right? Do I misunderstand something? And what means the xx in the address of TMP421/422? Thanks in advance, Andre
