AIN unmuxed 0 255 0 255 overroll

MIOS programming (C)
1

8Bit 18f452 Core - SDCC -10K Pot direct connected to J5, rest  to GND

 

the Pot give me 4times 0-255 on his travel way (0-255, 0-255, 0-255, 0-255)

 

in main.c i got this settings:

//Include files

include <cmios.h>

include <pic18fregs.h>

include “main.h”

void Init(void) __wparam
{
  MIOS_AIN_NumberSet(7);
  MIOS_AIN_UnMuxed();
  //MIOS_AIN_DeadbandSet(10);

What I tried:

removing “MIOS_AIN_DeadbandSet(0);”

typing “MIOS_AIN_DeadbandSet(7);” “MIOS_AIN_DeadbandSet(14);” “MIOS_AIN_DeadbandSet(0);” “MIOS_AIN_DeadbandSet(1);”

 

also tried this variant of main.c

 

Question is:

what Parameter definies this 4x0-255?

 

Is it right that i dont need the deadband set, when i use unmuxed, and short wires?!

2

If you are using the MIOS_AIN_PinGet() function, it returns a 10 bit value.  If you put this into an 8 bit variable it will wrap around 4 times.  Same thing will happen if you use the MIOS_AIN_PinLSBGet().  If this is going to be sent out as a Midi parameter, you need to use MIOS_AIN_Pin7bitGet() and it will return a value of only 0-127.  MSB must be zero so it isn’t recognized as a Midi command.

 

As far as Dead Band, with short lines the analog converters in the PIC may still wander around a bit or more.  Experiment with your Dead Band value if you need a stable value outputted.

3

THANKS - SOLVED — @ the End i have a other Question, what if i want to have 0-255 instead of 0-127?

Your Tip - work: (RANDOM = VARIABLE)

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{if(pin == 0) {RANDOM = MIOS_AIN_Pin7bitGet(0);}

0-127

 

ahhh, dont need filtering by pin:

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{RANDOM = MIOS_AIN_Pin7bitGet(0);}

0-127

 

 

-----------------------------------------------------what not work---------------------------------------------------------------

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{if(pin == 0) {RANDOM = pin_value;}

0-255 0-255 0-255 0-255

 

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{RANDOM = MIOS_AIN_PinGet(0);}

0-255 0-255 0-255 0-255

 

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{RANDOM = MIOS_AIN_PinGet(0);}

error 124: casting from to type 'void' is illegal

 

void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{RANDOM = MIOS_AIN_PinMSBGet(0);}

error 124: casting from to type 'void' is illegal
4

I have no idea what you are trying to do and why.  The __wparam value is outside any defined parameter values for the function and its not part of the function which would mean it has to be beween the {}.

 

Pete

5

you ask me questions, … as NEEWBEE, i dont know what wparam and much more other stuff is, i just take TKs enviroment and change it to some Note-Processing, Velocity-Trigger-Output Device - that should trigger a TAMA TECHSTAR 306 (a analog Drumexpander)

 

TK has written this: http://ucapps.de/mios/ain64_din128_dout128_v2c.zip

orginally it was meend to stream the POTENTIOMETER VALUE to Midi:

/////////////////////////////////////////////////////////////////////////////
// This function is called by MIOS when a pot has been moved
/////////////////////////////////////////////////////////////////////////////
void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{
  // a pot has been moved, send CC#<pin-number> at channel 1
  MIOS_MIDI_BeginStream();
  MIOS_MIDI_TxBufferPut(0xb0); // CC at channel 1
  MIOS_MIDI_TxBufferPut(pin); // pin number corresponds to CC number
  MIOS_MIDI_TxBufferPut(MIOS_AIN_Pin7bitGet(pin)); // don't send 10bit pin_value, but 7bit value
  MIOS_MIDI_EndStream();

  // notify display handler in DISPLAY_Tick() that AIN value has changed
  last_ain_pin = pin;
  app_flags.DISPLAY_UPDATE_REQ = 1;
}

I dont want stream anything to midi, I want the AIN-PIN as variable in my Program - thats all.

To get more resolution, I need 0-255 instead of 0-127

For what that Variable? > in the end to Randomly Gate the Triggerstream — Note Fall Out.

 

Enough Info?

 

so my adapted working Code is now: (of course 0-127… and not what i want 0-255)

/////////////////////////////////////////////////////////////////////////////
// This function is called by MIOS when a pot has been moved
/////////////////////////////////////////////////////////////////////////////
void AIN_NotifyChange(unsigned char pin, unsigned int pin_value) __wparam
{
RANDOM = MIOS_AIN_Pin7bitGet(0);
VelOff = MIOS_AIN_Pin7bitGet(1);  
NOISE = MIOS_AIN_Pin7bitGet(7);
}

and I thank you for that… i was trying a lot… i was on the false Train.

6

You might try getting the 10 bit value then shifting it down by 2 bits.  Depending on your variable types will determine how you save them.  This code assumes they are 8 bit unsigned values.

 

unsigned int Temp;

Temp = MIOS_AIN_PinGet(0);    // Get the 10 bit value.

RANDOM = (u8) (Temp >> 2);    // Convert it to an 8 bit value.

Temp = MIOS_AIN_PinGet(1);   

VelOff = (u8) (Temp >> 2);   

Temp = MIOS_AIN_PinGet(7);   

NOISE = (u8) (Temp >> 2);   

7

that works!

thx2kpete

in the TekkStar program :phone:

 

SOLVED