public void StandBy()
{
UpdateHardware = false;
DDSTuningWord = 0;
ResetDDS();
byte pio_ic1_temp = pio_ic1.GetData();
pio_ic1.SetData(0);
pio_ic1.SetBit(MUTE);
byte pio_ic3_temp = pio_ic3.GetData();
pio_ic3.SetData(0);
byte rfe_ic7_temp = 0;
byte rfe_ic9_temp = 0;
byte rfe_ic10_temp = 0;
byte rfe_ic11_temp = 0;
if (rfe_present)
{
rfe_ic7_temp = rfe_ic7.GetData();
rfe_ic7.SetData(0);
rfe_ic7.SetBit(PA_BIAS);
rfe_ic9_temp = rfe_ic9.GetData();
rfe_ic9.SetData(0);
rfe_ic10_temp = rfe_ic10.GetData();
rfe_ic10.SetData(0);
rfe_ic11_temp = rfe_ic11.GetData();
rfe_ic11.SetData(0);
rfe_ic11.SetBit(ADC_CS_NOT);
}
UpdateHardware = true;
UpdateHardware = false;
pio_ic1.SetData(pio_ic1_temp);
pio_ic3.SetData(pio_ic3_temp);
if (rfe_present)
{
rfe_ic7.SetData(rfe_ic7_temp);
rfe_ic9.SetData(rfe_ic9_temp);
rfe_ic10.SetData(rfe_ic10_temp);
rfe_ic11.SetData(rfe_ic11_temp);
}
}
private void UpdateRegister8(byte data, object user_data)
{
Config config = (Config)user_data;
switch (config.config)
{
case PIO:
if (usb_present)
{
byte address = 0;
switch (config.address)
{
case PIO_IC1:
address = USB.SDR1K_LATCH_BPF;
break;
case PIO_IC3:
address = USB.SDR1K_LATCH_EXT;
break;
default:
address = 0;
break;
}
USB.Sdr1kLatch(address, data);
}
else
{
LatchRegister(lpt_addr, config.address, data);
}
break;
case RFE:
if (usb_present)
{
USB.Sdr1kSRLoad(config.address, data);
}
else
{
byte tmp_data;
byte pio_data = (byte)(pio_ic1.GetData() & 0xC0);
// Shift 8 bits into the 4 RFE shift registers
for (int i = 0x80; i > 0; i >>= 1)
{
if ((i & data) == 0) // Current bit is low
{
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= DCDR_NE;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Output 0 bit
tmp_data |= SCK;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Clock 0 into shift register
}
else // Current bit is high
{
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= DCDR_NE; tmp_data |= SER;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Output 1 bit
tmp_data |= SCK;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Clock 1 into shift register
}
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= DCDR_NE;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Return SCK low
}
// Strobe the RFE 1:4 decoder output to transfer contents
// of shift register to output latches
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= config.address; tmp_data |= DCDR_NE;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Latch 2:4 decoder outputs
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= config.address;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Take 2:4 decoder enable low
tmp_data = (byte)(pio_data | SCLR_NOT); tmp_data |= config.address; tmp_data |= DCDR_NE;
LatchRegister(lpt_addr, PIO_IC1, tmp_data); // Take 2:4 decoder enable high
}
break;
}
}