Create 2.1.1_DAC_mcp4922.py

Author: Ildaron

Diff for: 2.Jetson_code/2.1_mirror_control/2.1.1_DAC_mcp4922.py

@@ -0,0 +1,27 @@
+import spidev
+print (1)
+spi = spidev.SpiDev()
+spi.open(0,0)
+spi.max_speed_hz=1000000
+first = '0011'
+second = '1011'
+
+Voltage_A=4.5
+Voltage_B=3
+
+def dac (channel, voltage):
+#voltage = 900 #
+ voltage1=bin((voltage))
+ voltage2=voltage1[2:]
+
+ s = channel + (voltage2).zfill(12) 
+ part_1, part_2=s[:8],s[8:] 
+ byte1=int (part_1,2)
+ byte2=int (part_2,2)
+ to_send =  [byte1, byte2]             
+ spi.xfer2(to_send)
+         
+
+while 1:
+ dac (first, int (Voltage_A*819))
+ dac (second, int (Voltage_B*819))