Multiple frames implementation (#2)

* Add rx event handlers * Fix compile errors and add constness * Pass sender id * Change api interface * Revert changes * Add filter fifo * Add default setup * Add receive function * Remove interrupt activation * Activate RX interrupts * Merge remote changes * Add event list constructor * Fix compilation bug * Send and receive multiple frames * Refactor * Refactor * Fix compile error * Use known syntax * Refactor * Provide storage * Add frame end * Add some documentation * Turn macros into functions * Refactor * Refactor * Fix compile error * Use ExtendedIds Co-authored-by: Riccardo998 <riccardo.storchi98@gmail.com>
2021-12-09 11:39:39 +01:00
parent 90d1836dfa
commit 7b09401b00
9 changed files with 346 additions and 50 deletions
@@ -0,0 +1,64 @@
+#ifndef INC_MMR_CAN_BINARY_LITERALS_H_
+#define INC_MMR_CAN_BINARY_LITERALS_H_
+
+/**
+ * @brief
+ * These set of macros (B_, B8_, B16_, B32_) allow one
+ * to convert bit literals to their hexadecimal representation
+ *
+ * They are useful when it is needed to convey exactly which bits
+ * are being set for a particular register, message etc...
+ *  
+ * @example
+ * B_(1010) = 0xA
+ * B8_(1111, 1111) = 0xFF
+ * 
+ * -----------------------------------------------------------
+ * Macros taken from https://stackoverflow.com/a/7577517 and
+ * sligthly readapted
+ */
+
+#define __B_0000 0
+#define __B_0001 1
+#define __B_0010 2
+#define __B_0011 3
+#define __B_0100 4
+#define __B_0101 5
+#define __B_0110 6
+#define __B_0111 7
+#define __B_1000 8
+#define __B_1001 9
+#define __B_1010 a
+#define __B_1011 b
+#define __B_1100 c
+#define __B_1101 d
+#define __B_1110 e
+#define __B_1111 f
+
+#define __B2H(bits) __B_ ## bits
+#define _B2H(bits) __B2H(bits)
+#define __HEX(n) 0x ## n
+#define _HEX(n) __HEX(n)
+#define __CCAT(a,b) a ## b
+#define _CCAT(a,b) __CCAT(a,b)
+
+#define B_(a) _HEX(_B2H(a))
+#define B8_(a, b) _HEX(_CCAT(_B2H(a), _B2H(b)))
+#define B16_(a, b, c, d) \
+  _HEX(_CCAT( \
+    _CCAT(_B2H(a), _B2H(b)), \
+    _CCAT(_B2H(c), _B2H(d))  \
+  ))
+
+#define B32_(a, b, c, d, e, f, g, h) \
+  _HEX(_CCAT( \
+    _CCAT( \
+      _CCAT(_B2H(a), _B2H(b)), \
+      _CCAT(_B2H(c),_B2H(d))), \
+    _CCAT( \
+      _CCAT(_B2H(e), _B2H(f)), \
+      _CCAT(_B2H(g), _B2H(h))  \
+    ) \
+  ))
+
+#endif /* INC_MMR_CAN_BINARY_LITERALS_H_ */