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Carlos Eguti
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| Question about SPI_SS_DISABLED |
 Posted: Thu Sep 04, 2008 7:27 am |
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Hi everybody !
I have some question about SPI...
When I'm using SPI communication between two 16F877, can I use the pin A5 from MASTER for I\O ? This pin on SLAVE is the SPI_SS Enable line, but in MASTER device is not necessary, correct ? The constant SPI_SS_DISABLED have effect on MASTER device??
Thanks |
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RLScott
Joined: 10 Jul 2007
Posts: 465
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| Re: Question about SPI_SS_DISABLED |
| Posted: Thu Sep 04, 2008 9:37 am |
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| Carlos Eguti wrote: | Hi everybody !
I have some question about SPI...
When I'm using SPI communication between two 16F877, can I use the pin A5 from MASTER for I\O ? This pin on SLAVE is the SPI_SS Enable line, but in MASTER device is not necessary, correct ? The constant SPI_SS_DISABLED have effect on MASTER device??
Thanks |
No, the SPI_SS_DISABLED only applies to slave devices. There is no automatic SS function in master mode. You can define any I/O pin you want as the SS output from the master. It does not have to be pin A5.
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Robert Scott
Real-Time Specialties
Embedded Systems Consulting |
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Carlos Eguti
Guest
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| Question about SPI_SS_DISABLED |
| Posted: Tue Sep 09, 2008 1:47 pm |
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OK
Thanks a lot! |
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