Mikroelektronika MIKROE-350 数据表

program PWM_Test

dim current_duty as byte

current_duty1 

main:

DDC0_bit = 0                    ' Set PORTC pin 0 as input
DDC1_bit = 0                    ' Set PORTC pin 1 as input

DDC2_bit = 0                    ' Set PORTC pin 2 as input

DDC3_bit = 0                    ' Set PORTC pin 3 as input

current_duty  = 127             ' initial value for current_duty
current_duty1 = 127             ' initial value for current_duty

DDB1_bit = 1                    ' Set PORTB pin 1 as output pin

for the PWM (according to datasheet)

DDB2_bit = 1                    ' Set PORTB pin 2 as output pin

for the PWM (according to datasheet)

PWM16bit_Init(_PWM16_FAST_MODE_9BIT, _PWM16_PRESCALER_16bit_1,

_PWM16_INVERTED, 255, 1)

while TRUE                          ' Endless loop

if (PINC.B0 <> 0) then

' Detect if PORTC pin 0 is pressed

Delay_ms(40)        ' Small delay to avoid deboucing effect
Inc(current_duty)               ' Increment duty ratio

PWM_Set_Duty(current_duty)      ' Set incremented duty

if (PINC.B1 <> 0) then

' Detect if PORTC pin 1 is pressed

Delay_ms(40)        ' Small delay to avoid deboucing effect

Dec(current_duty)               ' Decrement duty ratio
PWM_Set_Duty(current_duty)      ' Set decremented duty ratio

if (PINC.B2 <> 0) then

' Detect if PORTC pin 2 is pressed

Delay_ms(40)        ' Small delay to avoid deboucing effect

Inc(current_duty1)              ' Increment duty ratio
PWM1_Set_Duty(current_duty1)    ' Set incremented duty

if (PINC.B3 <> 0) then

' Detect if PORTC pin 3 is pressed

Delay_ms(40)         ' Small delay to avoid deboucing effect

Dec(current_duty1)              ' Decrement duty ratio

PWM1_Set_Duty(current_duty1)    ' Set decremented duty ratio

323

- SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

CHAPTER 6