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commands: conserve write cycles

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When a record or a binary file is written the card goes throth a full
flash/eeprom write cycle at this location, even when the data does not
change. This can be optimized by reading before writing in order to
compere if the data we are about to write is actually different.

Change-Id: Ifd1b80d3ede15a7caa29077a37ac7cf58c9053f1
Related: OS#4963
This commit is contained in:
Philipp Maier
2021-03-17 17:19:52 +01:00
committed by Harald Welte
parent 2b11c32e20
commit 38c74f6d41
3 changed files with 28 additions and 5 deletions
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6
pySim-shell.py
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@@ -67,11 +67,17 @@ class PysimApp(cmd2.Cmd):
self.numeric_path = False
self.add_settable(cmd2.Settable('numeric_path', bool, 'Print File IDs instead of names',
onchange_cb=self._onchange_numeric_path))
self.conserve_write = True
self.add_settable(cmd2.Settable('conserve_write', bool, 'Read and compare before write',
onchange_cb=self._onchange_conserve_write))
self.update_prompt()
def _onchange_numeric_path(self, param_name, old, new):
self.update_prompt()
def _onchange_conserve_write(self, param_name, old, new):
self.rs.conserve_write = new
def update_prompt(self):
path_list = self.rs.selected_file.fully_qualified_path(not self.numeric_path)
self.prompt = 'pySIM-shell (%s)> ' % ('/'.join(path_list))