16F18877 CONFIG with PPS register settings

32MHz internal

Config:

Code:

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#CONFIG
    __config _CONFIG1, _FEXTOSC_OFF & _RSTOSC_HFINT32 & _CLKOUTEN_OFF & _CSWEN_OFF & _FCMEN_ON
    __config _CONFIG2, _MCLRE_ON & _PWRTE_OFF & _LPBOREN_OFF & _BOREN_ON & _BORV_LO & _ZCD_OFF & _PPS1WAY_OFF & _STVREN_ON & _DEBUG_OFF
    __config _CONFIG3, _WDTCPS_WDTCPS_11 & _WDTE_ON & _WDTCWS_WDTCWS_7 & _WDTCCS_LFINTOSC
    __config _CONFIG4, _WRT_OFF & _SCANE_available & _LVP_OFF
    __config _CONFIG5, _CP_OFF & _CPD_OFF
#ENDCONFIG

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Oscillator:

Code:

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DEFINE OSC 32

    OSCCON1 = %01100010
'      bit 7  n/a
'          6-4 NOSC    New Oscillator Source Request bits
'                  110    HFINTOSC
'          3-0 NDIV    New Divider Selection Request bits
'                  0010    Clock divider = 4

    OSCCON3 = %00000000                ' Default values

    OSCEN = %00000000                  ' Default values

    OSCFRQ = %00000110
'      bit 7-3 n/a
'          2-0 HFFRQ  Frequency Selection bits
'                  110    32 MHz

    OSCTUNE = %00000000                ' Default values

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PPS pin definitions to use CCP3 and CCP4 on Ports D2 and D3 respectively:

Code:

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PinD2  CON %011010                    ' Datasheet table 13-2
PinD3  CON %011011
CCP3PPS = PinD2                        ' CCP3 Peripheral input selection
CCP4PPS = PinD3                        ' CCP4 Peripheral input selection

PeripheralCCP3  CON %001011            ' Datasheet table 13-3
PeripheralCCP4  CON %001100
RD2PPS = PeripheralCCP3                ' Pin D2 output source selection
RD3PPS = PeripheralCCP4                ' Pin D3 output source selection

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HPWM on pins D2 and D3:

Code:

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    HPWM 3,160,1953                ' Sample Pulses
    HPWM 4,180,1953

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Thanks go to TimB and Top204 on the Proton forum (that's where I got the Config from):
https://protoncompiler.com/index.php?topic=528.0

With those config1 settings you really shouldn't need to program any of the osc registers in code... it should run at 32Mhz at startup

Yup. I can confirm it will work without the register definitions in this case (LCDOUT and heartbeat LED working properly).

NOTE: When moving a feature away from a pin, make sure to clear the PPS register for that pin.

Code:

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RB5PPS = 0                              ' Disable CCP3
RB0PPS = 0                              ' Disable CCP4

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Or else you risk having all sorts of annoying surprises; like having a regular pulse coming out of what you thought was an input pin.

In my case, I moved CCP3 and CCP4 to other pins and was trying to use B0 and B5 for a rotary encoder signal. Took me WAAAAY too long to realize what was going on, but a quick google and Ric over at Microchip had the answer:

https://forum.microchip.com/s/topic/...ment=P-2930284