beremiz

py_ext: fix CSV Writer

18 months ago, Edouard Tisserant
d2f5eb3c7d6e
py_ext: fix CSV Writer

fix POU logic :
- SAVE is a BOOL
- invocation of py_eval on rising edge of SAVE
- remove save python argument

fix python:
- use no encoding for file open (python2)
- re-use detected dialect if any
- use no "rt+" and truncate since no need to re-sniff dialect for output file
- return "OK" instead of "#SUCCESS", preventing POU logic to ACK result
- support creating new line if writing just after last line
- support appending data on short rows

fix example:
- use a HMI:Button to trigger CSV write instead of HMI:Input +1
- reload CSVs on on each new CSV opened in file browser
- add display of CSV write output
// widget_back.ysl2
widget_desc("Back") {
longdesc
||
Back widget brings focus back to previous page in history when clicked.
||
shortdesc > Jump to previous page
}
widget_class("Back")
||
on_click(evt) {
if(jump_history.length > 1){
let page_name, index;
do {
jump_history.pop(); // forget current page
if(jump_history.length == 0) return;
[page_name, index] = jump_history[jump_history.length-1];
} while(page_name == "ScreenSaver") // never go back to ScreenSaver
switch_page(page_name, index);
}
}
init() {
this.element.onclick = this.on_click.bind(this);
}
||