| ??? 09/16/05 16:56 Read: times |
#101174 - yes, but Responding to: ???'s previous message |
If it's chip select is off it should ignore the clocks. No?
probably, but if you, as you suggest I was thinking of using it as the CS , use the IIC clock as CS then who knows how a chip is acting with the CS being "clocked". I would guess that an unselected SPI chip should ignore the clocks BUT will the shared pin being high or low at start of operation as a result of previous operation have an effect? I am not saying thatmy :guess" is correct, I am merely stating that the answer to "2. Are there any "gotchas" in doing it" is "likely" by raising one possibe side effect Erik |
| Topic | Author | Date |
| I2C & SPI shared clock line | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| i2c io port | 01/01/70 00:00 | |
| I2C External IO | 01/01/70 00:00 | |
| other GPIO | 01/01/70 00:00 | |
| All IO used. | 01/01/70 00:00 | |
| i2cchip | 01/01/70 00:00 | |
| Thanks for the link | 01/01/70 00:00 | |
| Because LPC has hardware IIC built in | 01/01/70 00:00 | |
| I am not too worried baout the IIC, but | 01/01/70 00:00 | |
| Reconfiguring the port to IO after start | 01/01/70 00:00 | |
| but it will still toggle when configured | 01/01/70 00:00 | |
| Why does the SPI care | 01/01/70 00:00 | |
yes, but | 01/01/70 00:00 |