| ??? 03/30/05 09:03 Read: times |
#90667 - AT89C51RD2 problems |
We trying to interface AD7730 24 bit ADC with 89C51RD2 over the SPI bus. We earlier tried with 89C52 without the SPI bus by bit banging. it works well. But when we try to interface 89C51RD2 over the SPI bus with AD7730, the initialization of AD7730, works well i mean we are able to initialise the adc in countinuous read mode and read 3 bytes from the ADC the problem is the reading that we recieve from the AD7730 fluctuate drastically from LSB to MSB. the RDYpin of AD7730 is used to interrupt the controller so that it can start the read from the ADC.
If we try on the AD7730 without RD2and SPI it works well. even if the 89C52 bitbanging routine is loaded in RD2 it shows the same fluctuations. Can u please help us in the above problem thanx in advance |
| Topic | Author | Date |
| AT89C51RD2 problems | 01/01/70 00:00 | |
| Speeds?? | 01/01/70 00:00 | |
| Further Details of the RD2 Enviornment | 01/01/70 00:00 | |
| maybe | 01/01/70 00:00 | |
| ? | 01/01/70 00:00 | |
| relevant | 01/01/70 00:00 | |
| Irrelevant | 01/01/70 00:00 | |
| sure he is | 01/01/70 00:00 | |
| I beg to differ | 01/01/70 00:00 | |
| Atmel product AT89C51RD2 | 01/01/70 00:00 | |
| this is getting silly | 01/01/70 00:00 | |
| You're telling me. | 01/01/70 00:00 | |
| one truth does not make another a lie | 01/01/70 00:00 | |
| Ridiculous meter goes off-scale | 01/01/70 00:00 | |
| cross posted | 01/01/70 00:00 | |
| not ridiculus, just different opinions | 01/01/70 00:00 | |
| Lets try to discuss the problem | 01/01/70 00:00 |