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whitecatboard / Lua-RTOS-ESP32

Lua RTOS for ESP32
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Timer fires only once #231

Closed Mynogs closed 5 years ago

Mynogs commented 5 years ago

This is part of the p+ simulation system (Simulink like). This part execute the main simulation block. But the timer fires only one. What's wong with my code?

if what == 'GENERATOR_MAIN' then
  return [[

do print('Start p+ simulation ' .. (sim.stepRateS 1000) .. 'ms cycle time') local t = tmr.attach( sim.stepRateS 1000, function()
block.step() collectgarbage() sim.step = sim.step + 1 sim.stepT0 = sim.stepT0 + 1 sim.timeS = sim.timeS + sim.stepRateS end ) t:start() end ]] end

Mynogs commented 5 years ago 
if what == 'GENERATOR_MAIN' then
  return [[
    do
      print('Start p+ simulation ' .. (sim.stepRateS * 1000) .. 'ms cycle time')
      local t = tmr.attach(
        sim.stepRateS * 1000,
        function()  
          block.step()
          collectgarbage()
          sim.step = sim.step + 1
          sim.stepT0 = sim.stepT0 + 1
          sim.timeS = sim.timeS + sim.stepRateS
        end
      )
      t:start()
    end
  ]]
jolivepetrus commented 5 years ago

@Mynogs,

You missed to set which timer hardware to use. An example is as follows:

t = tmr.attach(
    tmr.TMR0,
    1000 * 50,
    function()  
    print("hi")
    end
)

t:start()

Review the attach's signature in the wiki:

https://github.com/whitecatboard/Lua-RTOS-ESP32/wiki/TIMER-module#instance--tmrattachid-period-callback

Mynogs commented 5 years ago

I tryed to use the software timer. Now I chanced it:

  do
    print('Start p+ simulation ' .. (sim.stepRateS * 1000) .. 'ms cycle time')
    local t = tmr.attach(
      tmr.TMR0,
      sim.stepRateS * 1000000,
      function()  
        block.step()
        collectgarbage()
        sim.step = sim.step + 1
        sim.stepT0 = sim.stepT0 + 1
        sim.timeS = sim.timeS + sim.stepRateS
      end
    )
    t:start()
  end

The timer still fired only once and the board no longer react to ctrl-c! I must press the reset button. It is correct to end the Lua program? Or must I go to some kind of idle loop?

jolivepetrus commented 5 years ago

@Mynogs,

In your tests, which is the value for sim.stepRateS?

jolivepetrus commented 5 years ago

@Mynogs,

Not feedback about the value for sim.stepRateS. Please, reopen in case you need more assistance.

Mynogs commented 5 years ago

@jolivepetrus Sorry I missed your question! The value of sim.simStepS is 0.1 This means calculate a simulation step ever 100ms.