File content as of revision 39:82dc3daecf32:

#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() {
    
}