Aug 31, 2011 #1 R Rksk Newbie level 2 Joined Aug 31, 2011 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,293 Please help me on the topic "How to ajust light of LEDs using PIC16F877 PWM (HiTech C)".
Aug 31, 2011 #2 kak111 Advanced Member level 4 Joined Mar 30, 2011 Messages 1,365 Helped 933 Reputation 1,868 Reaction score 907 Trophy points 1,413 Location Finland Activity points 10,827 Book: PIC Microcontrollers - Programming in C .............4.8 EXAMPLE 6............. **broken link removed**
Book: PIC Microcontrollers - Programming in C .............4.8 EXAMPLE 6............. **broken link removed**
Aug 31, 2011 #3 vinodstanur Advanced Member level 3 Joined Oct 31, 2009 Messages 751 Helped 114 Reputation 234 Reaction score 114 Trophy points 1,333 Location Kerala (INDIA) Activity points 7,054 this is the PWM initialization code which I used for audio out. Any way, you just read the PWM part in the datasheet and then try to understand the below code. Code: void pwm_init() { TRISC1=0; T2CKPS1=0; T2CKPS0=0; PR2=0x50; CCPR2L=0x17; TMR2ON=1; CCP2CON=0b00001100; } void pwm_disable() { CCP2CON=0b00000000; } void pwm_enable() { CCP2CON=0b00001100; } ---------------------------------------------------------------------------------------- Now update the value in CCPR2L register to change the dutycycle. Last edited: Aug 31, 2011
this is the PWM initialization code which I used for audio out. Any way, you just read the PWM part in the datasheet and then try to understand the below code. Code: void pwm_init() { TRISC1=0; T2CKPS1=0; T2CKPS0=0; PR2=0x50; CCPR2L=0x17; TMR2ON=1; CCP2CON=0b00001100; } void pwm_disable() { CCP2CON=0b00000000; } void pwm_enable() { CCP2CON=0b00001100; } ---------------------------------------------------------------------------------------- Now update the value in CCPR2L register to change the dutycycle.
Sep 2, 2011 #4 R Rksk Newbie level 2 Joined Aug 31, 2011 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,293 I don't know even basics of PMW. Can anyone help me to learn it? ---------- Post added at 11:41 ---------- Previous post was at 11:40 ---------- I don't know even basics of PMW. Can anyone help me to learn it?
I don't know even basics of PMW. Can anyone help me to learn it? ---------- Post added at 11:41 ---------- Previous post was at 11:40 ---------- I don't know even basics of PMW. Can anyone help me to learn it?
Sep 2, 2011 #5 vinodstanur Advanced Member level 3 Joined Oct 31, 2009 Messages 751 Helped 114 Reputation 234 Reaction score 114 Trophy points 1,333 Location Kerala (INDIA) Activity points 7,054 You mean you don't know what is PWM? if so, then check this link: Introduction to PWM - Pulse Width Modulation. | eXtreme Electronics
You mean you don't know what is PWM? if so, then check this link: Introduction to PWM - Pulse Width Modulation. | eXtreme Electronics