AP_Scripting: Add send_text to display binding

Added a notify:send_text and notify:release_text binding to override the text displayed on a display with custom text

libraries/AP_Scripting/docs/docs.lua

@@ -2768,6 +2768,14 @@ function notify:handle_rgb(red, green, blue, rate_hz) end
 ---@param tune string
 function notify:play_tune(tune) end
 
+-- Display text on a notify display, text too long to fit will automatically be scrolled.
+---@param text string -- upto 50 characters
+---@param row integer -- row number to display on, 0 is at the top.
+function notify:send_text(text, row) end
+
+-- desc
+---@param row integer
+function notify:release_text(row) end
 
 -- desc
 ---@class gps

libraries/AP_Scripting/examples/hello_world_display.lua

@@ -0,0 +1,66 @@
+-- This script is an example of printing to a display via scripting
+-- Connect a supported display to the autopilot, and configure the NTF_DISPLAY_TYPE parameter seen at https://ardupilot.org/copter/docs/common-display-onboard.html
+-- The notify:send_text(text, row) method will override default on the display, disabling the default messages
+
+local switchTimeA
+local switchTimeB
+local displayWidth = 18
+local function update()
+    -- Just keep track of when we should switch to a smiley :)
+    if switchTimeA == nil then
+        switchTimeA = millis() + 5000
+        switchTimeB = switchTimeA + 10000
+    end
+
+    -- Example of overriding a line keeping some defaults, here we will replace the battery(1) and GPS(2) rows
+    if switchTimeA > millis() then
+        notify:send_text("Hello, World!", 1)
+        notify:send_text(tostring(millis()), 2)
+
+    -- Next demonstrate we can release the text, and the default will be shown again
+    elseif switchTimeB > millis() then
+        notify:release_text(1)
+        notify:release_text(2)
+
+    -- Example of overriding all lines, a smiley, try moving the autopilot around to see it change
+    else
+        -- Generate the smiley
+        local width = (displayWidth / 2)
+        local roll = math.floor(width + (ahrs:get_roll() * width)) - 4
+        local pitch = math.floor(ahrs:get_pitch() * 6) + 2;
+        local sub = 5 - roll
+        if sub < 0 then
+            sub = 0
+        end
+        local rows = {}
+        if pitch - 2 >= 0 and pitch - 2 <= 5 then 
+            rows[pitch - 2] = (string.rep(" ", roll) .. "    ##"):sub(sub);
+        end
+        if pitch - 1 >= 0 and pitch - 1 <= 5 then 
+            rows[pitch - 1] = (string.rep(" ", roll) .. " #    #"):sub(sub);
+        end
+        if pitch >= 0 and pitch <= 5 then 
+            rows[pitch] = (string.rep(" ", roll) .. "      #"):sub(sub);
+        end
+        if pitch + 1 >= 0 and pitch + 1 <= 5 then 
+            rows[pitch + 1] = (string.rep(" ", roll) .. " #    #"):sub(sub);
+        end
+        if pitch + 2 >= 0 and pitch + 2 <= 5 then 
+            rows[pitch + 2] = (string.rep(" ", roll) .. "    ##"):sub(sub);
+        end
+        if pitch + 3 >= 0 and pitch + 3 <= 5 then 
+            rows[pitch + 3] = "";
+        end
+
+        -- Send it out to the display
+        for i = 0, 5 do
+            if rows[i] == nil then
+                rows[i] = ""
+            end
+            notify:send_text(rows[i], i)
+        end
+    end
+
+    return update, 10
+ end
+ return update, 1000 -- Wait a few seconds before starting

libraries/AP_Scripting/generator/description/bindings.desc

@@ -191,6 +191,10 @@ singleton AP_Notify depends (!defined(HAL_BUILD_AP_PERIPH) || defined(HAL_PERIPH
 singleton AP_Notify method play_tune void string
 singleton AP_Notify method handle_rgb void uint8_t'skip_check uint8_t'skip_check uint8_t'skip_check uint8_t'skip_check
 singleton AP_Notify method handle_rgb_id void uint8_t'skip_check uint8_t'skip_check uint8_t'skip_check uint8_t'skip_check
+singleton AP_Notify method send_text_scripting void string uint8_t'skip_check
+singleton AP_Notify method send_text_scripting rename send_text
+singleton AP_Notify method release_text_scripting void uint8_t'skip_check
+singleton AP_Notify method release_text_scripting rename release_text
 
 include AP_Proximity/AP_Proximity.h
 include AP_Proximity/AP_Proximity_Backend.h