3 * adcsetch - select convertion channel
5 * written by Vangelis Rokas, 2004 <vrokas AT otenet.gr>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include <pic18fregs.h>
26 void adc_setchannel(unsigned char channel)
28 #if defined(__SDCC_ADC_STYLE242)
29 ADCON0 = (ADCON0 & ~(0x07 << 3)) | ((channel & 0x07) << 3);
30 #elif defined(__SDCC_ADC_STYLE1220)
31 ADCON0 = (ADCON0 & ~(0x07 << 2)) | ((channel & 0x07) << 2);
32 #elif defined(__SDCC_ADC_STYLE2220)
33 ADCON0 = (ADCON0 & ~(0x0f << 2)) | ((channel & 0x0f) << 2);
34 #elif defined(__SDCC_ADC_STYLE65J50)
35 WDTCONbits.ADSHR = 0; /* access ADCON0/1 */
36 ADCON0 = (ADCON0 & ~(0x0f << 2)) | ((channel & 0x0f) << 2);
37 #else /* unsupported ADC style */
38 #error Unsupported ADC style.