Hi, I'm connecting an external I2C device (ISL1208 RTC chip) on EVM board. I use APIs davinci_i2c_read / davinci_i2c_write for communicating with the chip. But I always get below error whenever I try to do any read/write operation on the chip:
DaVinci I2C WARNING: i2c: NACK detected DaVinci I2C WARNING: i2c: NACK detected DaVinci I2C WARNING: i2c: NACK detected DaVinci I2C WARNING: i2c: NACK detected DaVinci I2C WARNING: i2c: NACK detected i2c_transfer: master_xfer() = -121 rtc_i2c_read: davinci_i2c_read() failed - -121 -121 is EREMOTEIO. I'm connecting the device to U18 on EVM (PCF8574A) (Pin 14 is clk and pin 15 is data). Slave address of device as per spec is as per spec is 0xDE. I've made sure that hardware connections from board to RTC chip are all fine Any ideas on what is going wrong ?? Thanks ____________________________________________________________________________________ Any questions? Get answers on any topic at www.Answers.yahoo.com. Try it now. _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
