#include "ppmc.h"Include dependency graph for ppmc_dac.c:
Go to the source code of this file.
Functions | |
| __inline unsigned short | VoltToCounts (double volts) |
| int | RawDAC (int nAxis, double volts) |
| short | DACInit (void) |
| short | DACQuit (void) |
| int | ppmcDacNum (void) |
| int | ppmcDacWrite (int dac, double volts) |
| int | ppmcDacWriteAll (int max, double *volts) |
|
|
Definition at line 57 of file ppmc_dac.c. 00058 {
00059 SelWrt(DAC_WRITE_0,0); // reset strobe
00060 SelWrt(DAC_MODE_0,0); // sel strobe to INTR/ line
00061 return 0;
00062 }
|
|
|
Definition at line 64 of file ppmc_dac.c. 00065 {
00066 return DACInit(); //init sets all outputs to zero
00067 }
|
|
||||||||||||
|
Definition at line 34 of file ppmc_dac.c. 00035 {
00036
00037
00038 if ( (nAxis > PPMC_MAX_AXIS) || (nAxis < 0) ) /* is axis within range? */
00039 return -1;
00040
00041 /* convert -10.0 -> 0,0 to 0x8000 10 -> 0xFFFF */
00042
00043 if (nAxis <=3)
00044 {
00045 SelWrt16(DAC_0 + (nAxis << 1), VoltToCounts(volts));
00046 SelWrt(DAC_WRITE_0, 0);
00047 }
00048 else {
00049 SelWrt16(DAC_4 + ((nAxis-4) << 1), VoltToCounts(volts));
00050 SelWrt(DAC_WRITE_1, 0);
00051 }
00052
00053
00054 return 0;
00055 }
|
|
|
Definition at line 18 of file ppmc_dac.c. Referenced by RawDAC(), and ppmcDacWriteAll().
00019 {
00020 long nCounts;
00021 nCounts = (long) (((volts / 10.0) * 0x7FFF)+0x8000);
00022
00023 if (nCounts > 0xffff)
00024 {
00025 nCounts = 0xffff;
00026 }
00027 if (nCounts < 0 )
00028 {
00029 nCounts = 0;
00030 }
00031 return (unsigned short)nCounts;
00032 }
|
|
|
Definition at line 68 of file ppmc_dac.c. Referenced by extDacNum().
00069 {
00070 return PPMC_MAX_AXIS;
00071 }
|
|
||||||||||||
|
Definition at line 73 of file ppmc_dac.c. Referenced by extDacWrite(), and main().
00074 {
00075 return RawDAC(dac, volts);
00076 }
|
|
||||||||||||
|
Definition at line 78 of file ppmc_dac.c. Referenced by extDacWriteAll(), and main().
00079 {
00080 int t;
00081 int smax;
00082
00083 /* clip smax to max supported-- if they want more, ignore */
00084 if (max > PPMC_MAX_AXIS) {
00085 smax = PPMC_MAX_AXIS;
00086 }
00087 else {
00088 smax = max;
00089 }
00090 #ifndef PPMC_8_AXIS
00091 //take advantage of auto increment of address pointer in ppmc
00092 SelAddr(DAC_0);
00093 for (t = 0; t < smax; t++)
00094 {
00095 /* printf(" dac channel %d volts %12.4f digital # %d\n",
00096 t,volts[t],VoltToCounts(volts[t])); */
00097 WriteData16(VoltToCounts(volts[t]));
00098 }
00099 /* printf("\n"); */
00100 #else
00101 SelAddr(DAC_0);
00102 if(smax<=4)
00103 {
00104 for (t = 0; t < smax; t++)
00105 {
00106 WriteData16(VoltToCounts(volts[t]));
00107 }
00108 return 0;
00109 }
00110 else
00111 {
00112 for (t = 0; t < 4; t++)
00113 {
00114 WriteData16(VoltToCounts(volts[t]));
00115 }
00116 SelAddr(DAC_1);
00117 for (t = 4; t < smax; t++)
00118 {
00119 WriteData16(VoltToCounts(volts[t]));
00120 }
00121 }
00122 #endif
00123 return 0;
00124 }
|
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001