 |
 |
| View previous topic :: View next topic |
| Author |
Message |
spilz
Joined: 30 Jan 2012
Posts: 220
|
| PIC18F47J53 : what are the different functions Pin select ? |
 Posted: Fri Oct 14, 2016 4:15 am |
 |
|
hello,
I'm trying to use PIC18F47J53 with pin select, but I don't understand what means each function available :
T0CK, T1G, U2RX (vs RX2 ?) FTL0, T0CKI
C1OUT, U2TX (vs TX2?) UPLOUT, P1A, DT2, SSDMA
Where can I find what they mean and what they do ?
What is the difference between RX2 and U2RX ?
Thanks for your help.
regards |
|
 |
temtronic
Joined: 01 Jul 2010
Posts: 9246
Location: Greensville,Ontario
|
|
| Posted: Fri Oct 14, 2016 4:45 am |
|
|
Simple answer... printout the 'header' that CCS uses for that PIC and then compare the 'names' to what uchip uses in the 500-600 pages of the datasheet. Gone are the days of chips with only 14 pins, 16 instructions...
While I don't use that PIC, CCS does try to name pins, registers and bits the same or similar to what uchip has.
Once you get a decade or two proramming PICs, it'll be second nature to you....until then, reading the manuals, is kinda important.
Jay |
|
|
PCM programmer
Joined: 06 Sep 2003
Posts: 21708
|
|
| Posted: Fri Oct 14, 2016 6:38 am |
|
|
It's right there in these sections of the 18F1847J53 data sheet:
10.7.3.1 Input Mapping (page 156)
10.7.3.2 Output Mapping (page 157)
http://ww1.microchip.com/downloads/en/DeviceDoc/30009964C.pdf
Examples:
C1OUT = Comparator 1 Output
SSDMA = SPI DMA Slave Select
SDO2 = SPI2 Data Output
etc.
Last edited by PCM programmer on Fri Oct 14, 2016 10:25 am; edited 2 times in total |
|
|
Ttelmah
Joined: 11 Mar 2010
Posts: 19552
|
|
| Posted: Fri Oct 14, 2016 7:04 am |
|
|
Also look at the header include file for your PIC. Has this in the comments near the top:
| Code: |
////////////////////////////////////////////////////////////////// PIN_SELECT
// #pin_select function=pin
// Valid Pins:
// PIN_A0,PIN_A1,PIN_A5,PIN_B0,PIN_B1,PIN_B2,PIN_B3,PIN_B4,PIN_B5,PIN_B6,
// PIN_B7,PIN_C0,PIN_C1,PIN_C2,PIN_C4,PIN_C5,PIN_C6,PIN_C7,PIN_D2,PIN_D3,
// PIN_D4,PIN_D5,PIN_D6,PIN_D7
// Input Functions:
// INT1,INT2,INT3,T0CK,T3CK,T5CK,CCP1,CCP2,CCP3,T1G,T3G,T5G,U2RX,U2CK,SDI2,
// SCK2IN,SS2IN,FLT0,T0CKI,T3CKI,RX2
// Output Functions:
// NULL,C1OUT,C2OUT,C3OUT,U2TX,U2DT,SDO2,SCK2OUT,SS2OUT,ULPOUT,P1A,P1B,P1C,
// P1D,P2A,P2B,P2C,P2D,P3A,P3B,P3C,P3D,TX2,DT2,SCK2,SSDMA
//
|
The names of the pins that can be used for select, and the names of the input/output functions that can be mapped.
Combine this with the data sheet, and the examples (ex_pinselect.c & ex_pin_select2.c), and hopefully things then become easier. |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
