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Keeping compatibility of hardware clock of Pi 4 with earlier versions.

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neuralassembly 2019-12-30 23:40:30 +09:00
parent 1f908c5eed
commit 651136a110
1 changed files with 5 additions and 0 deletions
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5
wiringPi/wiringPi.c
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@ -1218,6 +1218,11 @@ void pwmSetRange (unsigned int range)
void pwmSetClock (int divisor) void pwmSetClock (int divisor)
{ {
uint32_t pwm_control ; uint32_t pwm_control ;
if (piGpioBase == GPIO_PERI_BASE_2711)
{
divisor = 540*divisor/192;
}
divisor &= 4095 ; divisor &= 4095 ;
if ((wiringPiMode == WPI_MODE_PINS) || (wiringPiMode == WPI_MODE_PHYS) || (wiringPiMode == WPI_MODE_GPIO)) if ((wiringPiMode == WPI_MODE_PINS) || (wiringPiMode == WPI_MODE_PHYS) || (wiringPiMode == WPI_MODE_GPIO))