public void send(byte data)
{
for (int i = 0; i < 8; i++)
{
_clock.Write(false);
_data.Write((data & 1) > 0 ? true : false);
data >>= 1;
_clock.Write(true);
}
}
private int readadc()
{
if ((adcnum > 7) || adcnum < 0)
{
return(-1);
}
cspin.Write(true);
clockpin.Write(false); // #start clock low
cspin.Write(false); // #bring CS low
int commandout = adcnum;
commandout |= 0x18; //# start bit + single-ended bit
commandout <<= 3; //# we only need to send 5 bits here
for (int i = 0; i < 5; i++)
{
if ((commandout & 0x80) == 128)
{
mosipin.Write(true);
}
else
{
mosipin.Write(false);
}
commandout <<= 1;
clockpin.Write(true);
clockpin.Write(false);
}
int adcout = 0;
//# read in one empty bit, one null bit and 10 ADC bits
for (int i = 0; i < 12; i++)
{
clockpin.Write(true);
clockpin.Write(false);
adcout <<= 1;
if (misopin.Read())
{
adcout |= 0x1;
}
}
cspin.Write(true);
adcout /= 2;//# first bit is 'null' so drop it
return(adcout);
}
/// <summary>
/// Sends 8 bit command to the DS1620
/// </summary>
/// <param name="command">The command</param>
private void SendCommand(int command)
{
// Sends 8 bit command on DQ output, least sig bit first
int n, bit;
for (n = 0; n < 8; n++)
{
bit = ((command >> n) & (0x01));
_dq.Write((bit == 1));
_clk.Write(false);
_clk.Write(true);
}
}
public TM16XX(GPIO data, GPIO clock, GPIO strobe, int displays, bool activateDisplay, int intensity)
{
// Set the pins
_data = data;
_clock = clock;
_strobe = strobe;
_displays = displays;
_strobe.Write(true);
_clock.Write(true);
sendCommand(0x40);
sendCommand((byte)(0x80 | (activateDisplay ? 0x08 : 0x00) | Math.Min(7, intensity)));
_strobe.Write(false);
send(0xC0);
for (int i = 0; i < 16; i++)
{
send(0x00);
}
_strobe.Write(true);
}
public void setupDisplay(bool active, int intensity)
{
sendCommand((byte)(0x80 | (active ? 8 : 0) | Math.Min(7, intensity)));
// necessary for the TM1640
_strobe.Write(false);
_clock.Write(false);
_clock.Write(true);
_strobe.Write(true);
}
/// <summary>
/// Send the commands to retrieve the temperature
/// </summary>
/// <returns>The temperature with a half degree granularity</returns>
private double GetTemperature()
{
_rst.Write(false);
_clk.Write(true);
_rst.Write(true);
SendCommand(0x0c); // write config command
SendCommand(0x02); // cpu mode
_rst.Write(false);
Thread.Sleep(200); // wait until the configuration register is written
_clk.Write(true);
_rst.Write(true);
SendCommand(0xEE); // start conversion
_rst.Write(false);
Thread.Sleep(200);
_clk.Write(true);
_rst.Write(true);
SendCommand(0xAA);
int raw_data = ReadData();
_rst.Write(false);
return((double)raw_data / 2.0);
}
public TM16XX(GPIO data, GPIO clock, GPIO strobe, int displays, bool activateDisplay, int intensity)
{
// Set the pins
_data = data;
_clock = clock;
_strobe = strobe;
_displays = displays;
_strobe.Write(true);
_clock.Write(true);
sendCommand(0x40);
sendCommand((byte)(0x80 | (activateDisplay ? 0x08 : 0x00) | Math.Min(7, intensity)));
_strobe.Write(false);
send(0xC0);
for (int i = 0; i < 16; i++)
{
send(0x00);
}
_strobe.Write(true);
}