The video above, demonstrates, how data from an external sensor (or two) can be logged to the uSD card on the SolderCore board. The data captured can then be transferred to the PC for viewing or post analysis. In the second part of this blog, data is logged to an online service so you can view the data captured by the SolderCore using a web browser.
Code from the video
10 'Code for the part 1 of the data logging blog.
20 'Simple data logging to the on board uSD card
30 '
40 INSTALL "core-light" AS CL
50 INSTALL "SolderCore-Sensecore" AS SC
60 INSTALL "TC77" USING SC.A AS TS
70 '
80 '
90 FOR I = 0 TO 9
100 '
110 AT = TS.TEMP
120 AL = CL.LIGHT
130 '
140 PRINT "Temp = " + STR(AT)
150 PRINT "Lux = " + STR(AL)
160 '
170 '
180 CALL LOGUSD(TIME$, STR(AL), ST(AT)
190 NEXT I
200 '
210 END
220 ' log data to the uSD card
230 DEFPROC LOGUSD(MYTIME, MYVAL1, MYVAL2)
240 'write data to usd Card
250 F = OPEN("/c/log.csv", READ WRITE)
260 IF F < 0 THEN
270 PRINT "Failed to open file."
280 RETURN
290 ENDIF
300 PTR F = EXT F ' Set file ptr to the end of the file.
310 'PRINT MYTIME + MYVAL1 + "," + MYVAL2
320 PRINT #F, MYTIME + "," + MYVAL1 + "," + MYVAL2
330 CLOSE F
340 ENDPROC