# HG changeset patch
# User Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
# Date 1670791086 18000
#      Sun Dec 11 15:38:06 2022 -0500
# Node ID ca149d313328d0a0fb7847a14440cf88caaab149
# Parent  ad6a8afa9b749e453cf8c5b9a2ddfd31530a2b10
arch: add PIN_{INPUT,OUTPUT}_* macros

These can be used to construct the PORT and DDR register values in more
semantically readable way.

Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>

diff --git a/arch.h b/arch.h
--- a/arch.h
+++ b/arch.h
@@ -39,6 +39,17 @@
 #define STATIC_ASSERT(c)	_Static_assert(c, #c)
 
 #define mmregs ((volatile struct mmregs_layout * volatile) (void *) 0x0)
+
+/*
+ * Macros to construct PORT and DDR register values
+ */
+#define PIN_INPUT_PORT_Z(bit)           0
+#define PIN_INPUT_PORT_H(bit)           (1 << (bit))
+#define PIN_INPUT_DDR(bit)              0
+#define PIN_OUTPUT_PORT_H(bit)          (1 << (bit))
+#define PIN_OUTPUT_PORT_L(bit)          0
+#define PIN_OUTPUT_DDR(bit)             (1 << (bit))
+
 #endif
 
 #endif