| ??? 09/29/05 04:42 Read: times |
#101700 - Worst conditions. Responding to: ???'s previous message |
3) what size are the pullup resistors ?
3) 4.7k Ohm That's what the appnote required. 5) how far are the uC and the max6956 apart ? 5) Maybe 16 inches via the jumper wires I'm using. Just some IC test leads I had bought. 6) the MAX6956 I have plugged into a breadboard. you have created just about the worst conditions under which to run IIC. you have very large stray capacitances and high value resistors I doubt the bus ever get high in time. That wouldn't surprise me. I'm not an electronics guy. to learn I just couldn't see paying somebody else $8,000 to design this device I will ultimately use this stuff with. When I understand logic and have wanted to learn some Assembly programming anyway. 4) does other things the uC do work? 4) ? I don't understand what you are asking here. Does your program e.g. blink a LED or some such thing that works I put a transistor and an LED on both the SDA and SCL so that I could see if anything was actually happening on the pins. before you go on, study this one http://www.semiconductors.philips.com/acrobat_d...h_2003.pdf Is basically an IIC "bible". If you are on dialup, download overnight it's 2.7 Mb Yep got this the other day when you mentioned it, but nothing jumped out at me of what I might be doing wrong. |
| Topic | Author | Date |
| Using IIC.ASM | 01/01/70 00:00 | |
| address, speed | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| two things | 01/01/70 00:00 | |
| Is HW I2C easier? | 01/01/70 00:00 | |
| That may have been true then, this is no | 01/01/70 00:00 | |
| Replies. | 01/01/70 00:00 | |
| Check SBCMON | 01/01/70 00:00 | |
| SBCMON | 01/01/70 00:00 | |
| try a serial memory | 01/01/70 00:00 | |
| let us try another tack | 01/01/70 00:00 | |
| another tack. | 01/01/70 00:00 | |
| you have created just about the worst co | 01/01/70 00:00 | |
| Worst conditions. | 01/01/70 00:00 | |
| oscilloscope | 01/01/70 00:00 | |
| oscilloscope | 01/01/70 00:00 | |
| To verify that your programming ("burnin | 01/01/70 00:00 | |
| verifying. | 01/01/70 00:00 | |
| Without a scope you are kind of stuck, s | 01/01/70 00:00 | |
Success. | 01/01/70 00:00 | |
| back to the roots | 01/01/70 00:00 | |
| Success. | 01/01/70 00:00 | |
| To Mike! | 01/01/70 00:00 | |
| Hello Mehdi | 01/01/70 00:00 | |
| Or... | 01/01/70 00:00 | |
| this is a bootleg, use the original | 01/01/70 00:00 | |
| i2cbits | 01/01/70 00:00 | |
| you may want to go here | 01/01/70 00:00 | |
| Clock width is only 2 uSec in IIC_ASM ex | 01/01/70 00:00 |