Hi Vasili,
Not about clockout, but there is an open Jallib issue (#208) with
respect to PWM libraries. It may contain information that could be of
help to you. A few years ago I made some 'private' libraries, to be
able to use PWM with 16f161x, 16f184xx, 16f188xx, 18f27k40. I don't know
if these are usable for the 12F1572. If you are interested I could send
these to you.
Regards, Rob_H!
On 15-12-2024 08:33, vsurducan wrote:
Solved in a weird mode. The following code is sending OSC/4 on clkout
pin if A4 is ON inside a loop.
Without a loop, A4 is permanently low.
include 12f1572 -- target PICmicro
--
;pragma target clock 32_000_000 -- oscillator frequency
pragma target clock 8_000_000 -- oscillator frequency
--
pragma target OSC INTOSC_NOCLKOUT -- internal oscillator
pragma target PLLEN DISABLED -- PLL off
pragma target CLKOUTEN ENABLED -- clock output enabled
pragma target WDT DISABLED -- watchdog
pragma target BROWNOUT DISABLED -- no brownout reset
pragma target LVP ENABLED -- low voltage
programming
pragma target MCLR EXTERNAL -- external reset
--
OSCCON_SCS = 0 -- select primary oscillator
OSCCON_IRCF = 0b1110 -- 8 MHz
;OSCCON_SPLLEN = ENABLED -- software PLL on 8x4=32MHz
OSCCON_SPLLEN = DISABLED - 8Mhz OSC
--
enable_digital_io() -- make all pins digital I/O
pin_A4_direction = output -- output osc/4
alias clkout is pin_A4 -- alias for clkout pin
forever loop
clkout = ON
end loop
On Sun, Dec 15, 2024 at 9:02 AM vsurducan <[email protected]> wrote:
Ok, pragma target clkouten is programming the configuration word
as it should. Reading hex with a programmer it looks ok.
However on the RA4 pin there is no clock/4.
On Sat, Dec 14, 2024 at 1:15 PM vsurducan <[email protected]> wrote:
Hi Rob,
I'm trying to understand the PWM in PIC12F1572, for which the
pwm library can not be used.
I need to see the system clock.
The problem is that I can not make it visible on clockout pin.
The following code should do it?
include 12f1572 -- target PICmicro
--
;pragma target clock 32_000_000 -- oscillator frequency
pragma target clock 8_000_000 -- oscillator frequency
--
pragma target OSC INTOSC_NOCLKOUT -- internal oscillator
pragma target PLLEN DISABLED -- PLL off
pragma target CLKOUTEN ENABLED -- clock
output enabled
pragma target WDT DISABLED -- watchdog
pragma target BROWNOUT DISABLED -- no brownout reset
pragma target LVP ENABLED -- low voltage programming
pragma target MCLR EXTERNAL -- external reset
--
OSCCON_SCS = 0 -- select primary oscillator
OSCCON_IRCF = 0b1110 -- 8 MHz
;OSCCON_SPLLEN = ENABLED -- software PLL on
8x4=32MHz
OSCCON_SPLLEN = DISABLED - 8Mhz OSC
--
enable_digital_io() -- make all pins digital I/O
pin_A4_direction = output ; output osc/4
--
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--
*Rob H*amerling, Vianen, NL
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