github.com/tinygo-org/tinygo@v0.31.3-0.20240404173401-90b0bf646c27/src/machine/board_atmega328pb.go (about)

     1  //go:build avr && atmega328pb
     2  
     3  package machine
     4  
     5  // Return the current CPU frequency in hertz.
     6  func CPUFrequency() uint32 {
     7  	return 16000000
     8  }
     9  
    10  const (
    11  	// Note: start at port B because there is no port A.
    12  	portB Pin = iota * 8
    13  	portC
    14  	portD
    15  	portE
    16  )
    17  
    18  const (
    19  	PB0 = portB + 0
    20  	PB1 = portB + 1 // peripherals: Timer1 channel A
    21  	PB2 = portB + 2 // peripherals: Timer1 channel B
    22  	PB3 = portB + 3 // peripherals: Timer2 channel A
    23  	PB4 = portB + 4
    24  	PB5 = portB + 5
    25  	PB6 = portB + 6
    26  	PB7 = portB + 7
    27  	PC0 = portC + 0
    28  	PC1 = portC + 1
    29  	PC2 = portC + 2
    30  	PC3 = portC + 3
    31  	PC4 = portC + 4
    32  	PC5 = portC + 5
    33  	PC6 = portC + 6
    34  	PC7 = portC + 7
    35  	PD0 = portD + 0
    36  	PD1 = portD + 1
    37  	PD2 = portD + 2
    38  	PD3 = portD + 3 // peripherals: Timer2 channel B
    39  	PD4 = portD + 4
    40  	PD5 = portD + 5 // peripherals: Timer0 channel B
    41  	PD6 = portD + 6 // peripherals: Timer0 channel A
    42  	PD7 = portD + 7
    43  	PE0 = portE + 0
    44  	PE1 = portE + 1
    45  	PE2 = portE + 2
    46  	PE3 = portE + 3
    47  	PE4 = portE + 4
    48  	PE5 = portE + 5
    49  	PE6 = portE + 6
    50  	PE7 = portE + 7
    51  )