Diff: PGA112_Driver.cpp

Revision:

0:4cb6d8393e9d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PGA112_Driver.cpp	Mon Jan 21 19:00:25 2019 +0000
@@ -0,0 +1,129 @@
+#include "PGA112_Driver.h"
+
+
+PGA112::PGA112(SPI *SPI_BUS, DigitalOut *Chip_Select)
+{
+  PGA = SPI_BUS;
+  CS = Chip_Select;
+  gain = 1;
+  channel = 1;
+  CS->write(1);
+}
+
+void PGA112::set_gain(int gain_set)
+{
+  char temp = 0x00;
+  gain = gain_set;
+
+  switch(gain)
+  {
+    case 1:
+        temp = GAIN_1<<4;
+        break;
+    case 2:
+        temp = GAIN_2<<4;
+        break;
+    case 4:
+        temp = GAIN_4<<4;
+        break;
+    case 8:
+        temp = GAIN_8<<4;
+        break;
+    case 16:
+        temp = GAIN_16<<4;
+        break;
+    case 32:
+        temp = GAIN_32<<4;
+        break;
+    case 64:
+        temp = GAIN_64<<4;
+        break;
+    case 128:
+        temp = GAIN_128<<4;
+        break;
+  }
+  switch(channel)
+  {
+    case 0:
+        gain_chan = temp + VCAL_CH0;
+        break;
+    case 1:
+        gain_chan = temp + CH_1;
+        break;
+    case 12:
+        gain_chan = temp + CAL_1;
+        break;
+    case 13:
+        gain_chan = temp + CAL_2;
+        break;
+    case 14:
+        gain_chan = temp + CAL_3;
+        break;
+    case 15:
+        gain_chan = temp + CAL_4;
+        break;
+  }
+  CS->write(0);
+  PGA->write(CMD_WRITE);
+  PGA->write(gain_chan);
+  CS->write(1);
+}
+
+void PGA112::set_channel(int channel_set)
+{
+  char temp = 0x00;
+  channel = channel_set;
+
+  switch(gain)
+  {
+    case 1:
+        temp = GAIN_1<<4;
+        break;
+    case 2:
+        temp = GAIN_2<<4;
+        break;
+    case 4:
+        temp = GAIN_4<<4;
+        break;
+    case 8:
+        temp = GAIN_8<<4;
+        break;
+    case 16:
+        temp = GAIN_16<<4;
+        break;
+    case 32:
+        temp = GAIN_32<<4;
+        break;
+    case 64:
+        temp = GAIN_64<<4;
+        break;
+    case 128:
+        temp = GAIN_128<<4;
+        break;
+  }
+  switch(channel)
+  {
+    case 0:
+        gain_chan = temp + VCAL_CH0;
+        break;
+    case 1:
+        gain_chan = temp + CH_1;
+        break;
+    case 12:
+        gain_chan = temp + CAL_1;
+        break;
+    case 13:
+        gain_chan = temp + CAL_2;
+        break;
+    case 14:
+        gain_chan = temp + CAL_3;
+        break;
+    case 15:
+        gain_chan = temp + CAL_4;
+        break;
+  }
+  CS->write(0);
+  PGA->write(CMD_WRITE);
+  PGA->write(gain_chan);
+  CS->write(1);
+}