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