Change object representation from 1 big union to individual structs.

A big change.  Micro Python objects are allocated as individual structs
with the first element being a pointer to the type information (which
is itself an object).  This scheme follows CPython.  Much more flexible,
not necessarily slower, uses same heap memory, and can allocate objects
statically.

Also change name prefix, from py_ to mp_ (mp for Micro Python).

1 files changed, 12 insertions, 11 deletions

diff --git a/stm/audio.c b/stm/audio.c
index 41614416e2..62d2ff2f86 100644
--- a/stm/audio.c
+++ b/stm/audio.c
@@ -6,9 +6,10 @@
 
 #include "nlr.h"
 #include "misc.h"
-#include "mpyconfig.h"
+#include "mpconfig.h"
 #include "parse.h"
 #include "compile.h"
+#include "obj.h"
 #include "runtime.h"
 
 #include "audio.h"
@@ -44,22 +45,22 @@ void audio_drain(void) {
 }
 
 // direct access to DAC
-py_obj_t pyb_audio_dac(py_obj_t val) {
-    DAC_SetChannel2Data(DAC_Align_8b_R, py_obj_get_int(val));
-    return py_const_none;
+mp_obj_t pyb_audio_dac(mp_obj_t val) {
+    DAC_SetChannel2Data(DAC_Align_8b_R, mp_obj_get_int(val));
+    return mp_const_none;
 }
 
-py_obj_t pyb_audio_is_full(void) {
+mp_obj_t pyb_audio_is_full(void) {
     if (audio_is_full()) {
-        return py_const_true;
+        return mp_const_true;
     } else {
-        return py_const_false;
+        return mp_const_false;
     }
 }
 
-py_obj_t pyb_audio_fill(py_obj_t val) {
-    audio_fill(py_obj_get_int(val));
-    return py_const_none;
+mp_obj_t pyb_audio_fill(mp_obj_t val) {
+    audio_fill(mp_obj_get_int(val));
+    return mp_const_none;
 }
 
 void audio_init(void) {
@@ -90,7 +91,7 @@ void audio_init(void) {
     // enable interrupt
 
     // Python interface
-    py_obj_t m = py_module_new();
+    mp_obj_t m = mp_module_new();
     rt_store_attr(m, qstr_from_str_static("dac"), rt_make_function_1(pyb_audio_dac));
     rt_store_attr(m, qstr_from_str_static("is_full"), rt_make_function_0(pyb_audio_is_full));
     rt_store_attr(m, qstr_from_str_static("fill"), rt_make_function_1(pyb_audio_fill));