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libraries/AP_Scripting/examples/readstring_test.lua
50 строк
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Andrew Tridgell
AP_Scripting: example showing how to use readstring method
28 фев 2024, 11:05
28 фев 2024, 11:05
9ea8e61
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--[[ example demonstrating how to read from a serial port into a lua string --]] local baud_rate = 57600 local port = assert(serial:find_serial(0), "Could not find Scripting Serial Port") port:begin(baud_rate) port:set_flow_control(0) --[[ get a string by concatenating bytes from the serial port, suitable for ArduPilot 4.4.x --]] local function get_string_44(n) local ret = "" for _ = 1, n do local b = port:read() ret = ret .. string.char(b) end return ret end --[[ get a string directly uisng readstring suitable for ArduPilot 4.5.x and later --]] local function get_string_45(n) return port:readstring(n) end function update() -- test using 4.5 method local n = port:available():toint() if n > 0 then local str = get_string_45(n) gcs:send_text(0, string.format("Received: '%s'", str)) end -- test using 4.4 method (just so we don't have an unused function in lua check) n = port:available():toint() if n > 0 then local str = get_string_44(n) gcs:send_text(0, string.format("Received: '%s'", str)) end return update, 100 end return update, 100