Diff: pdb.cpp

Revision:

39:82dc3daecf32

Child:

45:d591d138cdeb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pdb.cpp	Thu Jan 29 16:18:54 2015 +0000
@@ -0,0 +1,59 @@
+#include "pdb.h"
+
+void pdb_init(Serial &pc) {
+    
+    // initialize the Programmable Delay Block
+    SIM->SCGC6 |= SIM_SCGC6_PDB_MASK; // turn on the clock to the PDB
+            
+    // Configure the Peripheral Delay Block (PDB):
+    PDB0_IDLY = 0x05;   // need to trigger interrupt every counter reset which happens when modulus reached
+    PDB0_MOD = 0xd2;    // largest period possible with the slections above, so slow you can see each conversion.
+    PDB0_CH0DLY0 = 0x00;
+    PDB0_CH0DLY1 = 0x00;
+    PDB0_CH1DLY0 = 0x00;
+    PDB0_CH1DLY1 = 0x00;
+    PDB0_CH0C1 = PDB_C1_EN(0x01) | PDB_C1_TOS(0x01) | PDB_C1_EN(0x02) | PDB_C1_TOS(0x02) ; // channel 0 pretrigger 0 and 1 enabled and delayed
+    PDB0_CH1C1 = PDB_C1_EN(0x01) | PDB_C1_TOS(0x01) | PDB_C1_EN(0x02) | PDB_C1_TOS(0x02) ; // channel 1 pretrigger 0 and 1 enabled and delayed
+    
+    PDB0_SC =  PDB_SC_CONT_MASK     // Contintuous, rather than one-shot, mode
+         | PDB_SC_PDBEN_MASK        // PDB enabled
+         //| PDB_SC_PDBIE_MASK      // PDB Interrupt Enable
+         | PDB_SC_PRESCALER(0)      // Slow down the period of the PDB for testing
+         | PDB_SC_TRGSEL(0xf)       // Trigger source is Software Trigger to be invoked in this file
+         | PDB_SC_MULT(0)           // Multiplication factor 20 for the prescale divider for the counter clock
+         | PDB_SC_LDOK_MASK;        // Need to ok the loading or it will not load certain regsiters!
+    
+    
+    
+    SIM_SOPT7 = SIM_SOPT7_ADC0TRGSEL(0); // set ADC trigger to PDB0
+    
+    pc.printf("PDB0_SC:       %08x\r\n",PDB0_SC);
+    pc.printf("PDB0_MOD:      %08x\r\n",PDB0_MOD);
+    pc.printf("PDB0_CNT:      %08x\r\n",PDB0_CNT);
+    pc.printf("PDB0_IDLY:     %08x\r\n",PDB0_IDLY);
+    pc.printf("PDB0_CH0C1:    %08x\r\n",PDB0_CH0C1);
+    pc.printf("PDB0_CH0S:     %08x\r\n",PDB0_CH0S);
+    pc.printf("PDB0_CH0DLY0:  %08x\r\n",PDB0_CH0DLY0);
+    pc.printf("PDB0_CH0DLY1:  %08x\r\n",PDB0_CH0DLY1);
+    pc.printf("PDB0_CH1C1:    %08x\r\n",PDB0_CH1C1);
+    pc.printf("PDB0_CH1S:     %08x\r\n",PDB0_CH1S);
+    pc.printf("PDB0_CH1DLY0:  %08x\r\n",PDB0_CH1DLY0);
+    pc.printf("PDB0_CH1DLY1:  %08x\r\n",PDB0_CH1DLY1);
+    pc.printf("PDB0_DACINTC0: %08x\r\n",PDB0_DACINTC0);
+    pc.printf("PDB0_DACINT0:  %08x\r\n",PDB0_DACINT0);
+    pc.printf("PDB0_DACINTC1: %08x\r\n",PDB0_DACINTC1);
+    pc.printf("PDB0_DACINT1:  %08x\r\n",PDB0_DACINT1);
+    pc.printf("PDB0_POEN:     %08x\r\n",PDB0_POEN);
+    pc.printf("PDB0_PO0DLY:   %08x\r\n",PDB0_PO0DLY);
+    pc.printf("PDB0_PO1DLY:   %08x\r\n",PDB0_PO1DLY);
+    pc.printf("PDB0_PO2DLY:   %08x\r\n\n",PDB0_PO2DLY);
+    
+}
+
+void pdb_start() {
+    PDB0->SC |= PDB_SC_SWTRIG_MASK; // enable software trigger (start the PDB)
+}
+
+void pdb_stop() {
+    
+}
\ No newline at end of file