From: Bdale Garbee <bdale@gag.com>
Date: Mon, 21 Apr 2025 08:38:18 +0000 (+0000)
Subject: initialize gpio lines
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=77a09402b769b53a5d297a27e0b09113003fb2ce;p=fw%2Fquantimotor

initialize gpio lines
---

diff --git a/application/app.py b/application/app.py
index c48af50..1ae093d 100755
--- a/application/app.py
+++ b/application/app.py
@@ -5,11 +5,23 @@
 #
 
 import os
-
 import cherrypy
 from cherrypy.lib.static import serve_file
+import gpiod
+from gpiod.line import Direction, Value
 
+def set_line_values(chip_path, line_values):
+  value_str = {Value.ACTIVE: "Active", Value.INACTIVE: "Inactive"}
 
+  request = gpiod.request_lines(
+    chip_path,
+    consumer=sys.argv[0],
+    config={
+      tuple(line_values.keys()): gpiod.LineSettings(direction=Direction.OUTPUT)
+    },
+  )
+  request.set_values(line_values)
+ 
 path   = os.path.abspath(os.path.dirname(__file__))
 config = {
   'global' : {
@@ -40,5 +52,19 @@ class App:
 
 
 if __name__ == '__main__':
+  # initialize hardware
+  set_line_values(
+      "/dev/gpiochip0", 
+      {25: Value.ACTIVE,		# take ADS8688 out of reset
+        4: Value.ACTIVE,		# indicate 'ready' to LPC
+       16: Value.INACTIVE,		# pyro off
+       17: Value.INACTIVE,		# alarm b off
+       20: Value.INACTIVE,		# continuity LED off
+       21: Value.INACTIVE,		# armed LED off
+       27: Value.INACTIVE		# alarm a off
+      }
+  )
+
+  # launch web user interface
   cherrypy.quickstart(App(), '/', config)