altos/lpc: Filter ADC inputs

[fw/altos] / src / lpc / ao_arch_funcs.h

diff --git a/src/lpc/ao_arch_funcs.h b/src/lpc/ao_arch_funcs.h
index 179b2f4d0ae3963dba54febef71ab8889f058004..1bbb14f5b8773338a643ea1b7488cde0f8e319a1 100644 (file)
--- a/src/lpc/ao_arch_funcs.h
+++ b/src/lpc/ao_arch_funcs.h
@@ -61,12 +61,10 @@
 #define analog_func(id)                        lpc_token_evaluator_2(LPC_IOCONF_FUNC_AD,id)
 
 #define ao_enable_analog(port,bit,id) do {                             \
-               uint32_t _mode;                                         \
                ao_enable_port(port);                                   \
                lpc_gpio.dir[port] &= ~(1 << bit);                      \
-               _mode = ((analog_func(id) << LPC_IOCONF_FUNC) |         \
-                        (0 << LPC_IOCONF_ADMODE));                     \
-               lpc_ioconf.analog_reg(port,bit) = _mode;                \
+               lpc_ioconf.analog_reg(port,bit) = ((analog_func(id) << LPC_IOCONF_FUNC) | \
+                                                  (0 << LPC_IOCONF_ADMODE)); \
        } while (0)
        
 #define ARM_PUSH32(stack, val) (*(--(stack)) = (val))