[Sdcc-user] reading dummy values

[Arni I. <ar...@hr...>]

Hallo,

i have been playing around with sdcc on a EZ-USB-FX 8051.

I have to read a dummy value from external memory.  

   Example:
   
      I2C_STATUS |= bmBit5;     // Set LastRead = 1
      i = I2C_DATA;             // Read dummy
      while ( !(I2C_STATUS & bmBit0) );

The problem is, that sdcc optimizes the read (i=I2C_DATA) out, and
nothing gets read.

how should I handle such dummy reads ?


thanks in advance,
Arni