first commit

SUPERCAP_LOGGER.py

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+import serial
+from datetime import datetime
+
+# Setup test result file output
+# Getting the current date and time
+dt = datetime.now()
+
+# Get the timestamp
+ts = datetime.timestamp(dt)
+ts_c = ts + (86400 * 24107)
+ts_i = int(ts_c)
+ts_i_s = str(ts_i)
+file_name = "NEXIO_RTC_KEEPALIVE_TEST_" + ts_i_s + ".csv"
+
+# Datetime object containing current date and time
+now = datetime.now()
+ 
+# dd/mm/YY H:M:S
+date_string = now.strftime("%d/%m/%Y")
+time_string = now.strftime("%H:%M:%S")
+
+# Create file
+# Write Header
+fileref = open(("/home/hwdept-testbench/Python/supercap_test_python/TEST_RESULTS/" + file_name), "a")
+fileref.write("NEXIO RTC KEEP ALIVE TEST APPLICATION - TEST REPORT\r")
+fileref.write("TEST UNIT:," + "10008\r")
+fileref.write("TEST START DATE:," + date_string + "\r")
+fileref.write("TEST START TIME:," + time_string + "\r")
+fileref.write("DATE,TIME,VSCAP(V),VDD3V3(V)\r")
+fileref.close()
+
+ser = serial.Serial(port='/dev/ttyACM0', baudrate=115200)
+
+while (True):
+    # Check if incoming bytes are waiting to be read from the serial input buffer.
+    if (ser.inWaiting() > 7):
+        # read the bytes and convert from binary array to ASCII
+        in_bytes = ser.read(ser.inWaiting())
+
+        # Check is 'A' and 'R' sync bytes present
+        if (in_bytes[0] == 0x41) and (in_bytes[1] == 0x52):
+            rx_checksum = in_bytes[2]
+            rx_checksum += in_bytes[3]
+            rx_checksum += in_bytes[4]
+            rx_checksum += in_bytes[5]
+
+            rx_checksum = ~rx_checksum
+
+            rx_checksum = rx_checksum & 0xffff
+
+            rx_checksum_hold = (in_bytes[6] << 8) | in_bytes[7]
+
+            if rx_checksum == rx_checksum_hold:
+                v1_adc_raw = (in_bytes[2] << 8) | in_bytes[3]
+                v2_adc_raw = (in_bytes[4] << 8) | in_bytes[5]
+
+                adc_cal = 3.326 / 4095
+
+                v1_adc = v1_adc_raw * adc_cal
+                v2_adc = v2_adc_raw * adc_cal
+
+                R1_1 = 21980
+                R2_1 = 21990
+                R1_2 = 21960
+                R2_2 = 21970
+
+                v1 = v1_adc / (R2_1 / (R1_1 + R2_1))
+                v2 = v2_adc / (R2_2 / (R1_2 + R2_2))
+
+                # Datetime object containing current date and time
+                now = datetime.now()
+
+                # dd/mm/YY H:M:S
+                date_string = now.strftime("%d/%m/%Y")
+                time_string = now.strftime("%H:%M:%S")
+
+                # Write Results
+                result_string = date_string + "," + time_string + "," + "{:.2f}".format(v1) + "," + "{:.2f}".format(v2) + "\r"
+
+                fileref = open(("/home/hwdept-testbench/Python/supercap_test_python/TEST_RESULTS/" + file_name), "a")
+
+                fileref.write(result_string) 
+
+                fileref.close()
+
+                print ("DATE: " + date_string + " | TIME: " + time_string + " | VSCAP: " + "{:.2f}".format(v1) + "| VDD3V3: " \
+                    + "{:.2f}".format(v2))