Mod tuning

TUNING.md

@@ -11,19 +11,46 @@ To use this mod you need to do 2 things:
 
 You will need to specify which variables you want the Tuning mod to manage by adding them to that file.  See the file called **selfdrive/ui/params.example.txt** for an example.
 
-2. Modify OpenPilot code that uses the variable so that it is read from this file instead of hard coded.  This is left for the user to figure out and implement.
+2. Modify OpenPilot code that uses the variable so that it is read from this file instead of hard coded.  This is left for the user to figure out and implement.  To help you get started with this step you can use the following python code to read in the variables stored by this mod:
+
+```
+import imp
+f = open("/sdcard/tuning/params.txt")
+tuning = imp.load_source('tuning', '', f)
+f.close()
+````
+
+This will read all of the parameters that you've defined in your **params.txt** file and store them into a python variable called `tuning`.  Then you need to assign the real variables that openpilot uses with the corresponding parameter value.  For example, if openpilot has a hard coded value for `ret.steerKp=[0.2]` Assuming your **params.txt** file contains this parameter:
+
+`
+MySteerKp=[0.25]
+`
+
+You would then replace that line in the openpilot python file with `ret.steerKp=tuning.MySteerKp`.
 
 This mod can manage up to 10 different variables with each variable having a maximum of 3 element values in it.
 
 For questions or info about this mod, visit the comma slack channel #mod-tuning
 
-To change the "scale" of the steps tap the "Steps" box.  It will cycle through different scales.  The step scales are: \[0.001, 0.01, 0.1, 1, 5\]
+To change the "scale" of the steps tap the "Steps" box.  It will cycle through different scales.  The step scales are: \[0.000001, 0.00001, 0.0001, 0.001, 0.01, 0.1, 1, 5\]
 
 ![screenshot](https://i.imgur.com/G7j2vQY.jpg)
 
 CHANGE LOG:
 
-v0.0.1 - Initial version
+v0.0.3
+========================
+ * Increase precision to 6 decimal places
+
+v0.0.2
+========================
+ * Added 'press and hold' on the +/- buttons
+ * Swapped positions of +/- buttons
+
+v0.0.1
+========================
+ * Initial version
 
 To Do:
 - [ ] Ability to handle hex values
+- [ ] Suppress baseui from toggling zoom view when tapping

selfdrive/ui/tuning.h

@@ -91,7 +91,7 @@ char properties[50][MAX_NUM_PARAMS]; // List of property names
 int current_property = -1; // Which property value to adjust when clicking the increase/decrease buttons
 ui_element *property_buttons[MAX_NUM_PARAMS]; // Store the buttons that can be selected
 double step = 0.000001; // Steps to adjust on each click
-float delta_step = 0.001; // Change step by this amount
+float delta_step = 0.000001; // Change step by this amount
 int step_toggle = 0; // Change to preset toggle step
 
 int param_index = 0; // Index to track which param label we're working with