shamiao 12 år sedan
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      wiringPi/wiringPi.c

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wiringPi/wiringPi.c Visa fil

@@ -526,8 +526,8 @@ void pinModeGpio (int pin, int mode)
*(clk + PWMCLK_CNTL) = BCM_PASSWORD | 0x01 ; // Stop PWM Clock
delayMicroseconds (110) ; // See comments in pwmSetClockWPi

(void)*(pwm + PWM_CONTROL) ;
while ((*(pwm + PWM_CONTROL) & 0x80) != 0) // Wait for clock to be !BUSY
(void)*(clk + PWMCLK_CNTL) ;
while ((*(clk + PWMCLK_CNTL) & 0x80) != 0) // Wait for clock to be !BUSY
delayMicroseconds (1) ;

*(clk + PWMCLK_DIV) = BCM_PASSWORD | (32 << 12) ; // set pwm div to 32 (19.2/32 = 600KHz)


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