static void pfi_setup(comedi_device *dev);
+/*GPCTR function def's...*/
+int GPCTR_G_Watch(comedi_device *dev, int chan);
+int GPCTR_Begin_Event_Counting(comedi_device *dev, comedi_subdevice *s,int chan, int value);
+
+
#undef DEBUG
#define AIMODE_NONE 0
/* Arm the counter 0 (stobe) */
tmpreg = devpriv->gpctr_command[0] | G0_Arm;
win_out(tmpreg,G_Command_Register(0));
-
+
return 0;
}
}
#endif
-#define GPCTR 1
-#if GPCTR
+//make -DGPCTR is best way to include this.
+#ifdef GPCTR
/*
* Low level stuff...Each STC counter has two 24 bit load registers (A&B). Just make
* it easier to access them.
win_out( G_Command_Register(chan), devpriv->gpctr_mode[chan]|G_Load);
}
+/*
+* Begin simple event counting. This function should eventually do quadrature
+* encoding too.
+*/
+int GPCTR_Begin_Event_Counting(comedi_device *dev, comedi_subdevice *s,int chan,
+ int value) {
+
+ GPCTR_Load_Using_A(dev, chan, value);
+ devpriv->gpctr_mode[chan] |= G_Gating_Mode(1);
+ devpriv->gpctr_mode[chan] |= G_Trigger_Mode_For_Edge_Gate(2);
+
+ win_out( G_Mode_Register(chan), devpriv->gpctr_mode[chan]);
+ win_out( G_Command_Register(chan), devpriv->gpctr_command[chan]);
+ win_out( G_Input_Select_Register(chan), devpriv->gpctr_input_select[chan]);
+
+ return 0;
+}
+
+/* Don't use this by itself! The read is not atomic and quite unsafe.
+* If you think you need this function, use GPCTR_G_Watch instead.
+*/
+int inline GPCTR_G_Read(comedi_device *dev, int chan) {
+ int tmp;
+ tmp = win_in( G_Save_Register_High(chan)) << 16;
+ tmp |= win_in(G_Save_Register_Low(chan));
+ return tmp;
+}
+
+/*
+* Read the GPCTRs current value.
+* This function is actually straight out of the STC RLPM.
+*/
+int GPCTR_G_Watch(comedi_device *dev, int chan) {
+ int save1,save2;
+
+ devpriv->gpctr_command[chan] &= ~G_Save_Trace;
+ win_out( G_Command_Register(chan), devpriv->gpctr_command[chan]);
+
+ devpriv->gpctr_command[chan] |= G_Save_Trace;
+ win_out( G_Command_Register(chan), devpriv->gpctr_command[chan]);
+
+ save1 = GPCTR_G_Read(dev,chan);
+ save2 = GPCTR_G_Read(dev,chan);
+
+ /*if the value changed during the read, try again*/
+ if (save1 != save2) {
+ save1 = GPCTR_G_Read(dev,chan);
+ }
+ return save1;
+}
+
+//note: EXPORT_SYMTAB must have been defined for this to work.
+EXPORT_SYMBOL(GPCTR_G_Watch);
+EXPORT_SYMBOL(GPCTR_Begin_Event_Counting);
+
#endif
/*
*
*/
#if 0
-
-//Tell the GPCTR to use A to load from, then put a value into A and
-//tell the GPCTR to load that value.
-void GPCT_LoadUsingA(pd dev, int no, unsigned long x)
-{
- /* Writing to G0_Mode_Register with address 26
- * G0_Load_Source_Select<=0
- * pattern = 0x0000
- */
- DAQ_STC_Windowed_Mode_Masked_Write(dev, G0_Mode_Register+no,0x0000,0x0080);
-
- /* Writing to the G0_Load_A_Register with address 28 */
- DAQ_STC_Windowed_Mode_Write(dev, G0_Load_A_Registers+4*no,
- (x>>16) & 0x00ff);
- DAQ_STC_Windowed_Mode_Write(dev, G0_Load_A_Registers+1+4*no,
- x & 0xffff);
- /* Writing to G0_Command_Register with address 6
- * G0_Load <=1
- * pattern=0x0104
- */
- //load the value we just wrote to G0_Load_A_Registers
- DAQ_STC_Windowed_Mode_Strobe_Write(dev, G0_Command_Register+no,0x0004);
-}
-void GPCT_Prepare(pd dev, int no, int mode)
-{
- gpct_private_data *gp = &dev->gc[no];
-
- unsigned short uMode=0, uComm=0, uInpsel=0,
- or_gate=0, gate_sel_load_src=0, /* in inpsel */
- bank_sw_en=0, bank_sw_mode=0, /* in comm */
- load_src_sel=0, reload_src_sw=0, load_on_gate=0, load_on_tc=0,
- gate_mode=0, gate_on_both_edges=0, trig_mode_for_edge_gate=0,
- stop_mode=0, counting_once=0;
- int gate_irq_en=0;
-
- switch (mode){
- case 1: /* simple event count OK */
- GPCT_LoadUsingA(dev, no, gp->icnt);
- gate_mode=1; trig_mode_for_edge_gate=2;
- break;
-
-
- uInpsel=(gp->src_sel<<2) | (gp->gate_sel<<7) | (gate_sel_load_src<<12) |
- (or_gate<<13) | (gp->out_pol<<14) | (gp->src_pol<<15);
- uComm=(gp->up_down<<5) | (bank_sw_mode<<11) | (bank_sw_en<<12);
- uMode=(gate_mode<<0) | (gate_on_both_edges<<2) |
- (trig_mode_for_edge_gate<<3) | (stop_mode<<5) | (load_src_sel<<7) |
- (gp->out_mode<<8) | (counting_once<<10) | (load_on_tc<<12) |
- (gp->gate_pol<<13) | (load_on_gate<<14) | (reload_src_sw<<15);
-
- DAQ_STC_Windowed_Mode_Masked_Write(dev,G0_Input_Select_Register+no,
- uInpsel, 0xFFFC);
- DAQ_STC_Windowed_Mode_Masked_Write(dev,G0_Command_Register+no,
- uComm, 0x8160);
- DAQ_STC_Windowed_Mode_Masked_Write(dev, G0_Mode_Register+no,
- uMode, 0xFFFF);
- DEBUG_PRINT (("g%1d mode=%x\n",no,uMode));
- if(gate_irq_en) {
- if(!no)
- DAQ_STC_Windowed_Mode_Masked_Write(dev, Interrupt_A_Enable_Register,
- 0x0100, 0x0100);
- else
- DAQ_STC_Windowed_Mode_Masked_Write(dev, Interrupt_B_Enable_Register,
- 0x0400, 0x0400);
- }
-}
-
#endif
+
static int ni_8255_callback(int dir,int port,int data,void *arg)
{
comedi_device *dev=arg;
#define G_Disarm_Copy _bit15 /* strobe */
#define G_Save_Trace_Copy _bit14
#define G_Arm_Copy _bit13 /* strobe */
-//#define G0_Bank_Switch_Enable _bit12
-//#define G1_Bank_Switch_Enable _bit12
-//#define G0_Bank_Switch_Mode _bit11
-//#define G1_Bank_Switch_Mode _bit11
#define G_Bank_Switch_Start _bit10 /* strobe */
#define G_Little_Big_Endian _bit9
#define G_Synchronized_Gate _bit8
#define G_Up_Down(a) (((a)&0x03)<<5)
#define G_Disarm _bit4 /* strobe */
#define G_Analog_Trigger_Reset _bit3 /* strobe */
-//#define G0_Load _bit2 /* strobe */
-//#define G1_Load _bit2 /* strobe */
#define G_Save_Trace _bit1
#define G_Arm _bit0 /* strobe */
/* input select register */
-//#define G0_Source_Polarity _bit15
-//#define G1_Source_Polarity _bit15
-//#define G0_Output_Polarity _bit14
-//#define G1_Output_Polarity _bit14
-//#define G0_OR_Gate _bit13
-//#define G1_OR_Gate _bit13
-//#define G0_Gate_Select_Load_Source _bit12
-//#define G1_Gate_Select_Load_Source _bit12
#define G_Gate_Select(a) (((a)&0x1f)<<7)
#define G_Source_Select(a) (((a)&0x1f)<<2)
#define G_Write_Acknowledges_Irq _bit1
/* mode register */
-//#define G0_Load_Source_Select _bit7
-//#define G1_Load_Source_Select _bit7
-
-//#define G0_Reload_Source_Switching _bit15
-//#define G1_Reload_Source_Switching _bit15
-//#define G0_Loading_On_Gate _bit14
-//#define G1_Loading_On_Gate _bit14
-//#define G0_Gate_Polarity _bit13
-//#define G1_Gate_Polarity _bit13
#define G_Loading_On_TC _bit12
-//#define G0_Counting_Once(a) (((a)&0x03)<<10)
-//#define G1_Counting_Once(a) (((a)&0x03)<<10)
#define G_Output_Mode(a) (((a)&0x03)<<8)
-//#define G0_Stop_Mode(a) (((a)&0x03)<<5)
-//#define G1_Stop_Mode(a) (((a)&0x03)<<5)
#define G_Trigger_Mode_For_Edge_Gate(a) (((a)&0x03)<<3)
-//#define G0_Gate_On_Both_Edges _bit1
-//#define G1_Gate_On_Both_Edges _bit1
#define G_Gating_Mode(a) (((a)&0x03)<<0)
/* same input mode register, but with channel agnostic names */
projects / comedi.git / commitdiff