Difficoult set clock using 16F18346 mcu, How can i do? SOLVED

[leo73]

2.Nov.2022 UPDATED
Hello to Every One,
I have another problem to set clock by microC or whit microC code.
I'm building one stereo Vu-Meter project (after try it on my breadboard using another pic model), so i decide to draw and print my pcb using one 16F18346 mcu.
My questions is:
1) can i have microC code (or setting it by compiler) to set only external xtal 32 mhz ?
2) can i have microC code (or setting it by compiler) to set only internal clock whit pll x 4 ?

PS:Actually i have only xtal 20mhz components.
I attached all information for you.
Thank you in advance.
Leonardo.

[hexreader]

Wow!

so many things wrong....

so many things confused....

1) The only way to obtain 32MHz clock from a 2-pin crystal is to use an 8MHz crystal with 4x PLL
20MHz 2-pin crystal can only give 20MHz clock

2) I will give you project settings of 16MHz internal oscillator and 2x PLL once you answer question 3

3) Which PIC device does your board have - PIC16F18346 or PIC16LF18346?

Your schematic and your post mention the "F" version, but the project in your zip file is for the "LF" version

[leo73]

Hello Hexreader,
Thank you to your reply !!!
I'm using16(L)F18346
Tomorrow I'll open another questions because this pic family not recognise, in to timer0 interrupt, the instruction OPTION_REG= ....
I Asked to PicKit plus company they reply me, so I solve this obstacle. There's code to set internal and external 32mhz clock and for use 20mhz too.

Internal 32mHz

// CONFIG1 TO PROPRIETY OF PROJECT ON COMPILER

#pragma config FEXTOSC = OFF // FEXTOSC External Oscillator mode Selection bits->Oscillator not enabled

#pragma config RSTOSC = HFINT1 // Power-up default value for COSC bits->HFINTOSC (1MHz)

#pragma config CLKOUTEN = OFF // Clock Out Enable bit->CLKOUT function is disabled; I/O or oscillator function on OSC2

#pragma config CSWEN = ON // Clock Switch Enable bit->Writing to NOSC and NDIV is allowed

#pragma config FCMEN = ON // Fail-Safe Clock Monitor Enable->Fail-Safe Clock Monitor is enabled



// CONFIG2 TO PROPRIETY OF PROJECT ON COMPILER

#pragma config MCLRE = ON // Master Clear Enable bit->MCLR/VPP pin function is MCLR; Weak pull-up enabled

#pragma config PWRTE = OFF // Power-up Timer Enable bit->PWRT disabled

#pragma config WDTE = OFF // Watchdog Timer Enable bits->WDT disabled; SWDTEN is ignored

#pragma config LPBOREN = OFF // Low-power BOR enable bit->ULPBOR disabled

#pragma config BOREN = ON // Brown-out Reset Enable bits->Brown-out Reset enabled, SBOREN bit ignored

#pragma config BORV = LOW // Brown-out Reset Voltage selection bit->Brown-out voltage (Vbor) set to 2.45V

#pragma config PPS1WAY = ON // PPSLOCK bit One-Way Set Enable bit->The PPSLOCK bit can be cleared and set only once; PPS registers remain locked after one clear/set cycle

#pragma config STVREN = ON // Stack Overflow/Underflow Reset Enable bit->Stack Overflow or Underflow will cause a Reset

#pragma config DEBUG = OFF // Debugger enable bit->Background debugger disabled



// CONFIG3 TO PROPRIETY OF PROJECT ON COMPILER

#pragma config WRT = OFF // User NVM self-write protection bits->Write protection off

#pragma config LVP = ON // Low Voltage Programming Enable bit->Low Voltage programming enabled. MCLR/VPP pin function is MCLR. MCLRE configuration bit is ignored.



// CONFIG4

#pragma config CP = OFF // User NVM Program Memory Code Protection bit->User NVM code protection disabled

#pragma config CPD = OFF // Data NVM Memory Code Protection bit->Data NVM code protection disabled

Code: Select all

//OSCILLATOR_Initialize

// NOSC HFINTOSC; NDIV 4;

OSCCON1 = 0x62;

// CSWHOLD may proceed; SOSCPWR Low power; SOSCBE crystal oscillator;

OSCCON3 = 0x00;

// LFOEN disabled; ADOEN disabled; SOSCEN disabled; EXTOEN disabled; HFOEN disabled;

OSCEN = 0x00;

// HFFRQ 32_MHz;

OSCFRQ = 0x07;

// HFTUN 0;

OSCTUNE = 0x00;

External 20mHz



OSC on Porta.4 and porta.5



You need to set TRIS and ANSEL for external

TRISx registers

TRISA = 0x37;

TRISB = 0xF0;

TRISC = 0xFF

;



ANSELx registers

ANSELC = 0xFF;

ANSELB = 0xF0;

ANSELA = 0x37;

// CONFIG1

#pragma config FEXTOSC = HS // FEXTOSC External Oscillator mode Selection bits->HS (crystal oscillator) above 4 MHz

#pragma config RSTOSC = EXT1X // Power-up default value for COSC bits->EXTOSC operating per FEXTOSC bits

#pragma config CLKOUTEN = OFF // Clock Out Enable bit->CLKOUT function is disabled; I/O or oscillator function on OSC2

#pragma config CSWEN = ON // Clock Switch Enable bit->Writing to NOSC and NDIV is allowed

#pragma config FCMEN = ON // Fail-Safe Clock Monitor Enable->Fail-Safe Clock Monitor is enabled

Code: Select all

//OSCILLATOR_Initialize

// NOSC EXTOSC; NDIV 4;

OSCCON1 = 0x72;

// CSWHOLD may proceed; SOSCPWR Low power; SOSCBE crystal oscillator;

OSCCON3 = 0x00;

// LFOEN disabled; ADOEN disabled; SOSCEN disabled; EXTOEN disabled; HFOEN disabled;

OSCEN = 0x00;

// HFFRQ 32_MHz;

OSCFRQ = 0x07;

// HFTUN 0;

OSCTUNE = 0x00;