Support access to integers of size not a power of two

Data types such as UNSIGNED48 was not supported, except via the access
function with the previous commit. Add all the non-power-of-two variants
of UNSIGNED and INTEGER to the OD get/set functions.

Note that defining an array of these objects using OD_ARRAY is broken,
because it produces unaligned accesses, that even if they may be
supported by the platform, will not necessarily be atomic.

Signed-off-by: Andreas Fritiofson <[email protected]>
Change-Id: Id7ee68cc50921b9b6705e95a5867b7f99eb319be

Author: nattgris

src/co_od.c

@@ -176,12 +176,32 @@ uint32_t co_od_get_value (
       *value = co_atomic_get_uint16 (data);
       break;
 
+   case DTYPE_UNSIGNED24:
+   case DTYPE_INTEGER24:
+      *value = co_atomic_get_uint32 (data) & 0xFFFFFF;
+      break;
+
    case DTYPE_REAL32:
    case DTYPE_UNSIGNED32:
    case DTYPE_INTEGER32:
       *value = co_atomic_get_uint32 (data);
       break;
 
+   case DTYPE_UNSIGNED40:
+   case DTYPE_INTEGER40:
+      *value = co_atomic_get_uint64 (data) & 0xFFFFFFFFFF;
+      break;
+
+   case DTYPE_UNSIGNED48:
+   case DTYPE_INTEGER48:
+      *value = co_atomic_get_uint64 (data) & 0xFFFFFFFFFFFF;
+      break;
+
+   case DTYPE_UNSIGNED56:
+   case DTYPE_INTEGER56:
+      *value = co_atomic_get_uint64 (data) & 0xFFFFFFFFFFFFFF;
+      break;
+
    case DTYPE_REAL64:
    case DTYPE_UNSIGNED64:
    case DTYPE_INTEGER64:
@@ -243,12 +263,32 @@ uint32_t co_od_set_value (
       co_atomic_set_uint16 (data, value & UINT16_MAX);
       break;
 
+   case DTYPE_UNSIGNED24:
+   case DTYPE_INTEGER24:
+      co_atomic_set_uint32 (data, value & 0xFFFFFF);
+      break;
+
    case DTYPE_REAL32:
    case DTYPE_UNSIGNED32:
    case DTYPE_INTEGER32:
       co_atomic_set_uint32 (data, value & UINT32_MAX);
       break;
 
+   case DTYPE_UNSIGNED40:
+   case DTYPE_INTEGER40:
+      co_atomic_set_uint64 (data, value & 0xFFFFFFFFFF);
+      break;
+
+   case DTYPE_UNSIGNED48:
+   case DTYPE_INTEGER48:
+      co_atomic_set_uint64 (data, value & 0xFFFFFFFFFFFF);
+      break;
+
+   case DTYPE_UNSIGNED56:
+   case DTYPE_INTEGER56:
+      co_atomic_set_uint64 (data, value & 0xFFFFFFFFFFFFFF);
+      break;
+
    case DTYPE_REAL64:
    case DTYPE_UNSIGNED64:
    case DTYPE_INTEGER64: