Help me PWM 100Hz

Forum 2005-2010 (read only) Hardware Interfacing
1

Help me I have to generate PWM 100Hz Mega Arduino
Turning in the forum I found a way but I generates 800 Hz
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?action=print;num=1235060559

int outputPsuB = 45;  // Timer5-B
int outputPsuC = 44;  // Timer5-C

void setup()
{
// PSU outputs via timer5
 pinMode(outputPsuB, OUTPUT);  // select Pin as ch-B
 pinMode(outputPsuC, OUTPUT);  // select Pin as ch-C
 
 TCCR5A = B00101001; // Phase and frequency correct PWM change at OCRA
 TCCR5B = B10001;  // System clock
 OCR5A = 10000; // 799,92Hz
 OCR5B = 7500; // 75%
 OCR5C = 100; // 1%
 }

Thank you o meglio grazie

2

I risolved , but only Arduino Mega

 int outputPsuB = 45;  // Timer5-B
//int outputPsuC = 44;  // Timer5-C

void setup()
{

 pinMode(outputPsuB, OUTPUT);  // select Pin as ch-B
 //pinMode(outputPsuC, OUTPUT);  // select Pin as ch-C
 
 TCCR5A = B00100011; // Phase and frequency correct PWM change at OCRA
 TCCR5B = B11010;  // prescaler
 OCR5A = 20000; // 100Hz  se fosse  OCR5A = 10000 verrebbe 200hz
 OCR5B =2000; // 10%
 //OCR5C = 100; // 1%
 }

 void loop(){}