How do I access bits

[LEH]

I need to determine if bits of a byte are high or low. So I have symbol ADDR = b2. I can't use ADDR.bit7, and I have tried various commands such as if ADDR & this, also if ADDR AND this, where this is a variable or DCDn. I can't seem to use any variation of if ADDR & or if ADDR AND as I get a syntax error.

 

[westaust55]

One option is using the IF BIT test command
http://www.picaxe.com/BASIC-Commands/Program-Flow-Control/if-bit/

Otherwise for the lower 4 byte variables there is access to the individual bits with bit0 through bit31 as bit variables.

 

[hippy]

The bits which make up b2 are bit23-bit16 (msb-lsb), so you can define ...

Symbol ADDR = b2

Symbol ADDR.bit0 = bit16
Symbol ADDR.bit1 = bit17
:
Symbol ADDR.bit6 = bit22
Symbol ADDR.bit7 = bit23

 

[LEH]

Thanks for your help. Was able to get if ADDR BIT n SET then to be accepted. I thought I was going to have to use if ADDR >= 128 then; blah; ADDR = ADDR - 128; endif etc.