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Hi all,
I am interested to implement PLL using pic16f72.
1.Is it possible to implement with 16f72?
2.I want to synchronize with mains.(free run mode freq is 50 hz)I dont know where to start.my lock range is about 48hz - 52 hz. I am using 4 MHZ crystal for 16f72. Incoming mains is 50hz.
3.I...
pic program for sinusoidal pulse width modulation
Thanks for the above replies.I created 90 degree loop and inverted that according to the requirement.
pwm1con
Hi,
My dead band delay program is not working.I am using 16f716 in PWM mode(half bridge config).I introduced a dead band delay of 6us but i am not able to trace out the delay in MPLAB simulator.I tried with more delay,even i didnt get.
please help me where i am doing wrong,here is my...
sine pwm using 16f72
Hi,
I am trying to generate sine pwm using 16f72(asm code).I tried same thing few months back,but failed.(F-50hz,Fosc-20Mhz,Fpwm-20Khz)
Now again planing to start the sine pwm generation.I know how to use the sine LUT and CCP pin.
Please help me how to generate sine...
sinosoidal pwm
Thanks for the reply...
Mr AMK1971 given me good logic..i have tried using CCP1 in compare mode,but i didnt get the correct output.Is the pwm will be generated only using CCP1 in PWM mode?
My input freq is 50HZ and switching freq is 20khz.
sinusoidal pwm
Hi,
I am using 16f72 asm code to generate sinusoidal PWM.I not getting idea to start,Theory says that sine pwm can be generated by comparing sine and triangular waves.
I know how to use CCP module.can anyone help me how to do the same using software.
Please give me some ideas...
Hi everyone,
I am using PCF8583 RTC interfacing with 16f877.I can able to read the min,hour,day.But i cant able to set the min,hour,day.
Please help me regarding this...
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RTC problem...
Hi all,
I am using RTC (PCF8583) with 16f877.I am not familiar with I2C interfacing.I used the following codes,while readiing data sheets and refering some sites.But i controller gets hanging problem when i used the coding.
Please help me to solve the problem...
Hi,
I am using 16f72 at 20 MHZ.I used 4 MHZ crystal,and adc aquisition time is 21 micro second,
Now i have plan to use 20 MHZ crystal,so what will be the aquisition time for adc at 20 mhz.Can i use the same time delay......
Please help me on this.
When i used 8 bit,my code is working properly,but my 4 bit code is not working.
i used the command for 4 bit interface is,
movlw 0x28
call disp_cmd
is any command s required before this command?Please help me.
Thanks for your points.
i will change the delay and LCD contrast,then get you back.Is it necessary to call lcd initialization when ever wnat to display a new character?or i can just call the display RAM address?
Can i use interrupt for LCD routine. i have doubt using interrrupt for LCD...
Thank you for the response.
I didnt get any characters as you mentioned(dark characters),only backlight is ON(it is looking bright).
i will give you the pin connections what i did,I have used 2.5ms delay to send the command.will this delay is sufficient or i have to increase the delay.and...
mikroc: not enough ram
Hi,
I am using CDM16216B LCD to interface with 16f72.But i didnt get anything on LCD.Please kindly reply me,my code is here.
list p=16f72 ;PIC16f72 is the target processor
INCLUDE "P16f72.INC"...
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