bmp085 sensor works on 3.3v volt. I have internally pulled up the pin and I can see resistor connected in the harware diagram of bmp085. Still I connect external resistor?
On Thursday, 15 January 2015 09:56:46 UTC+5:30, liyaoshi wrote: > > Can you try connect with external 5V supply ? > BTW, suggest R2 and R3 connect with 10k resister , > > > 2015-01-15 12:14 GMT+08:00 JAY KOTHARI <[email protected] <javascript:>> > : > >> Hello, >> I am using bmp085 sensor with uext connection with beaglebone >> black. I have made change in device tree of BBB. I have made i2c1(pin 17 >> and 18) as input pin and pulled up internally and set it to mode two. I >> have also set compatible property in device tree to load module of bmp085. >> After looking into hardware design manual of bmp085 I interface with >> beaglebone black.I connected four wire (vdd(pin3),gnd(pin1),sda(pin17) and >> scl(pin18)) and kept other unconnected. >> >> >> https://www.olimex.com/Products/Modules/Sensors/MOD-BMP085/resources/MOD-BMP085_sch.pdf >> >> When I boot my kernel my bmp085 module is loaded automatically and I >> am getting entry in /dev of i2c1 >> >> Problem: >> When I connect BBB with bmp085 my kernel hangs or BBB does not start >> at all!!!!What may be the problem???? >> Note: >> I am not using 5v supply. >> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
