How to use pio functions?

[Roman]

Hi,

I'm trying to run script LED.lua from examples, but I have problem with pio function -

error:
stdin:1: attempt to index global 'pio' (a nil value)                            
stack traceback:                                                                
        stdin:1: in main chunk                                                  
        [C]: ?  

My script:
  local uartid, invert, ledpin = 0, false
  ledpin = pio.PF_2

 function cycle()
   pio.pin.sethigh( ledpin )
   tmr.delay( 0, 500000 )
   pio.pin.setlow( ledpin )
   tmr.delay( 0, 500000 )
 end

 pio.pin.setdir( pio.OUTPUT, ledpin )
 
 while uart.getchar( uartid, 0 ) == "" do
   cycle()
 end

I was trying use function - module(...) - but then I have this error:
stdin:1: bad argument #1 to 'module' (string expected, got no value)            
stack traceback:                                                                
        [C]: in function 'module'                                              
        stdin:1: in main chunk                                                  
        [C]: ?


My platform is LM3S and version of my eLUA is v0.9.
In board configuration in theory I have added pio module:
  components = {
    sercon = { uart = 0, speed = 115200 },
    wofs = true,
    romfs = true,
    --shell = true,
    advanced_shell = true,
    term = { lines = 25, cols = 80 },
    cints = true,
    lm3s_pio = true;
    rpc = { uart = 0, speed = 115200 },
    adc = { buf_size = 2 },
    xmodem = true,
    linenoise = { shell_lines = 10, lua_lines = 30 }
  },
  modules = {
    generic = { 'all', '-pio', '-cpu', '-i2c', '-net' },
    platform = {'all'}
 }

Does anybody have any idea what I do wrong?

Best
Roman

[Roman]

Maybe I have to put name of the module in module("some module name")?
But what modules do I have to add?

Best ,
Roman  

[jbsnyder]

Did you try this before you adjusted your configuration file?

The items with dashes in front of them in the modules section will actually disable them:

  modules = { 
    generic = { 'all', '-pio', '-cpu', '-i2c', '-net' }, 
    platform = {'all'} 
 } 

So this disables pio, cpu, i2c & net.  the 'all' should include pio.

You can check that modules have been built in to your project by typing something like:

print(pio)

at the prompt.  If present you should see a response like:

romtable: 0x2eac0

Best.

-jsnyder

On Fri, Sep 5, 2014 at 9:29 AM, Roman [via eLua Development] <[hidden email]> wrote:

Hi,

I'm trying to run script LED.lua from examples, but I have problem with pio function -

error:
stdin:1: attempt to index global 'pio' (a nil value)                            
stack traceback:                                                                
        stdin:1: in main chunk                                                  
        [C]: ?  

My script:
  local uartid, invert, ledpin = 0, false
  ledpin = pio.PF_2

 function cycle()
   pio.pin.sethigh( ledpin )
   tmr.delay( 0, 500000 )
   pio.pin.setlow( ledpin )
   tmr.delay( 0, 500000 )
 end

 pio.pin.setdir( pio.OUTPUT, ledpin )
 
 while uart.getchar( uartid, 0 ) == "" do
   cycle()
 end

I was trying use function - module(...) - but then I have this error:
stdin:1: bad argument #1 to 'module' (string expected, got no value)            
stack traceback:                                                                
        [C]: in function 'module'                                              
        stdin:1: in main chunk                                                  
        [C]: ?


My platform is LM3S and version of my eLUA is v0.9.
In board configuration in theory I have added pio module:
  components = {
    sercon = { uart = 0, speed = 115200 },
    wofs = true,
    romfs = true,
    --shell = true,
    advanced_shell = true,
    term = { lines = 25, cols = 80 },
    cints = true,
    lm3s_pio = true;
    rpc = { uart = 0, speed = 115200 },
    adc = { buf_size = 2 },
    xmodem = true,
    linenoise = { shell_lines = 10, lua_lines = 30 }
  },
  modules = {
    generic = { 'all', '-pio', '-cpu', '-i2c', '-net' },
    platform = {'all'}
 }

Does anybody have any idea what I do wrong?

Best
Roman

---

If you reply to this email, your message will be added to the discussion below:

http://elua-development.2368040.n2.nabble.com/How-to-use-pio-functions-tp7578445.html

To start a new topic under eLua Development, email [hidden email]
To unsubscribe from eLua Development, click here.
NAML

--

James Snyder
ph: [phone]

[Roman]

Great, this answer solved my problem.
Tanks.