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k2backhoe
Regular Member

Joined: 04/12/2021
Location: United States
Posts: 47

Posted: 01:45am 31 Dec 2022

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PicoMiteV5.07.05b17 would respond to

Open "battemptst.txt" For append As #1
Print #1, prstr$
Close #1

by appending data to form files on my micro-SD card like

...
30-12-2022 20:16:02 Batt= 4.028,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:17:02 Batt= 4.028,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:18:02 Batt= 4.029,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:19:02 Batt= 4.027,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:20:02 Batt= 4.028,PicoTemp= 69.71, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:21:02 Batt= 4.028,PicoTemp= 69.71, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:22:02 Batt= 4.027,PicoTemp= 69.71, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:23:02 Batt= 4.028,PicoTemp= 69.71, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:24:02 Batt= 4.028,PicoTemp= 69.71, T0=1832.00, T1=1832.00, T2=1832.00
30-12-2022 20:25:02 Batt= 4.028,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00
...

but using 5.070606 the entire file on the SD card is just the last like written:

30-12-2022 20:25:02 Batt= 4.028,PicoTemp= 68.87, T0=1832.00, T1=1832.00, T2=1832.00

as if the file were erased and re-opened from scratch, or overwritten from the start instead of appended. I demonstrated this on two different Pico circuits.

I assume this is a side effect of the new file system. Is there a workaround, or shall I go back to V5.07.05b17 permanently or until an update occurs?

Is there a version of the updated manual where such things are documented?

Thanks in advance for any answers (PS: I really liked 5.070606 because it fixed the leading LED color error that 5.0705 had with the WS2812B strings)

k2backhoe
Regular Member

Joined: 04/12/2021
Location: United States
Posts: 47

Posted: 02:14am 31 Dec 2022

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Temporary fix attained. The wisdom of keeping a legacy folder of all the past versions I have downloaded. Version 5.07.05RC9 works properly (4 trials and errors) on "open for append" and also works properly to load colors into the WS2812B. I will use this until I understand how to properly append data to files in the new system.

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 10629

Posted: 08:12am 31 Dec 2022

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Are you setting the active drive to be the SDcard?

Drive "b:"
Kill "test.txt"
For i=1 To 10
Open "test.txt" For append As #1
Print #1,"hello "+Str$(i)
Close #1
Next
List "test.txt"

works perfectly for me on the SDcard. There does seem to be a bug on using append with the flash file system that I need to look at.
Edited 2022-12-31 18:46 by matherp

k2backhoe
Regular Member

Joined: 04/12/2021
Location: United States
Posts: 47

Posted: 10:11pm 01 Jan 2023

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Well, of course. Now that there are two potential drives,I have to specify which one. Thanks, that makes total sense.

The post labeled "PicoMite V5.07.06 preview - flash file system": this is the current documentation I should look at for any information about the new flash file system and any changes to the old SD file system? I hate to keep taking up peoples time with things I should learn from existing documentation.

Thanks again for this wonderful system. I am working on the final iteration of a flexible data collection board based on the Pico and Basic, and having a marvelous time.

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