STC micro STC8A8K64D4 Series - Page 578

STC8A8K64D4 Series Manual
- 562 -
{
int i;
for (i=0; i<100; i++);
}
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
ADC_CONTR = ADC_POWER | ADC_EPWMT | 0; // Select P1.0 as the ADC input channel
delay(); // Wait for the ADC power supply to stabilize
EADC = 1;
PWMSET = 0x01; //Enable PWM module (The configuration is effective only after
the module is enabled.)
P_SW2 = 0x80;
PWMCKS = 0x00; // The clock of PWM is the system clock
PWMC = 0x1000; // Set the period of PWM to 1000H PWM clocks
PWM0T1= 0x0100; // When the count value is 100H, the PWM0 channel outputs low level
PWM0T2= 0x0500; // When the count value is 500H, the PWM0 channel outputs high level
PWMTADC = 0x0200; // Set ADC trigger point
PWM0CR= 0x80; //Enable PWM0 output
P_SW2 = 0x00;
PWMCFG = 0x07; // Start the PWM module and enable the PWM interrupt and ADC trigger
EA = 1;
while (1);
}
void pwm0_isr() interrupt 22
{
if (PWMCFG & 0x08)
{
PWMCFG &= ~0x08;
}
}
void ADC_ISR() interrupt 5
{
ADC_CONTR &= ~ADC_FLAG;
}
Assembly code
;Operating frequency for test is 11.0592MHz