Issue with current version and attiny85 mcu

[nbernard]

Hi,

I'm trying to use owslave on an attiny85 (that is marked as "untested for some time") and I'm running into some issues.

Mostly the current head doesn't compile for this device. I have tried using older versions, but then I run into different compilation errors due to the evolution of some dependencies since. It seems the main culprit is around commit e96137693c67eeae281dfcf72068734c36508ffd, and I tried the following modifications:

diff --git a/cfg b/cfg
index d84d19d..4287de7 100755
--- a/cfg
+++ b/cfg
@@ -423,8 +423,9 @@ def main(cfg_name,*kk):
                             print("#define ONEWIRE_IFBIT {}".format(1<<(-own-1)), file=f)
                         else:
                             print("#define ONEWIRE_IRQ PCINT{}_vect".format(own+int(owp[1])), file=f)
-                            print("#define ONEWIRE_IFR PCICR", file=f)
+                            print("#define ONEWIRE_IER PCICR", file=f)
                             print("#define ONEWIRE_IFR PCINT{}".format(own>>3), file=f)
+                            print("#define ONEWIRE_IFBIT 0", file=f)

                     if temp_nam:
                         print("#define N_TEMP_DRIVER {}".format(len(temp_nam)), file=f)
diff --git a/irq_catcher.c b/irq_catcher.c
index 1f6b837..2854c9f 100644
--- a/irq_catcher.c
+++ b/irq_catcher.c
@@ -100,7 +100,7 @@ void __vector_2(void) { ping_me(2); }
 #endif
 void __vector_3(void) { ping_me(3); }
 void __vector_4(void) { ping_me(4); }
-void __vector_5(void) { ping_me(5); }
+//void __vector_5(void) { ping_me(5); }
 void __vector_6(void) { ping_me(6); }
 void __vector_7(void) { ping_me(7); }
 void __vector_8(void) { ping_me(8); }
diff --git a/world.cfg b/world.cfg
index 92abe68..45c9ff9 100644
--- a/world.cfg
+++ b/world.cfg
@@ -187,9 +188,11 @@ mcu:
     mcu: attiny85
     flash:
       size: 8
+    pin_irq:
+      B2: -1
     prog: t85
     defs:
-      onewire_io: B1
+      onewire_io: B2
   mega8:
     mcu: atmega8
     prog: m8

and the following configuration file:

_include: world.cfg
devices:
  _default:
    _ref: defaults.target.t85
    types:
      _ref: defaults.types
    code: []
  test_1:
    _doc: My very first 1wire slave device
    mcu: attiny85
    defs:
      is_onewire: ds2423
#      is_onewire: moat
      use_eeprom: 1
      single_device: 1
      have_irq_catcher: 1
    onewire_id: xdeadbeef0000
targets:
- test_1

With these modifications, the build is successful, but the flashed mcu appears unresponsive to a 1-wire query, so I guess they are incomplete and/or erroneous. I tried both the ds2423 (as, if I succeed in making this to work, I may try to implement the now obsolete ds2433) and the moat targets, with the same (non-)result.

Would you have any idea/advice?

[drtrigon]

@nbernard: I've been run into similar issues. Have you been able to make the slave device working/functional?

[nbernard]

Hello,

No, I have not, but I didn't try hard yet either. I have put this project on the backburner while waiting to see if someone had an easy fix, and due to other more pressing projects, have not touched it since.