samd51: Make errno, os, and time module aliases

notro · notro · commit cec9a69a15a1 · 2018-10-24T19:31:53.000+02:00
Add alias for uerrno so the user doesn't have to know about the
CircuitPython special names for the module.

Make os and time weak modules (aliases) making it possible to add
functionality to those modules written in python.

Example:
'import os' will now look in the path for an os module and if not found
it will import the builtin module. An os module written in python will
import the builtin module through its name prefixed with an underscore
(_os) following the C module naming practice in CPython.

Also right align the macro values to increase readability making it
easier to compare the values for samd21 and samd51. Even the longest
macro from py/mpconfig.h will fit with this alignment.
diff --git a/ports/atmel-samd/mpconfigport.h b/ports/atmel-samd/mpconfigport.h
@@ -84,7 +84,6 @@
 #define MICROPY_VFS                 (1)
 #define MICROPY_VFS_FAT             (1)
 #define MICROPY_PY_MACHINE          (1)
-#define MICROPY_MODULE_WEAK_LINKS   (0)
 #define MICROPY_REPL_AUTO_INDENT    (1)
 #define MICROPY_HW_ENABLE_DAC       (1)
 #define MICROPY_ENABLE_FINALISER    (1)
@@ -140,15 +139,17 @@ typedef long mp_off_t;
 #include "include/sam.h"
 
 #ifdef SAMD21
-#define CIRCUITPY_MCU_FAMILY samd21
+#define CIRCUITPY_MCU_FAMILY                        samd21
 #define MICROPY_PY_SYS_PLATFORM                     "Atmel SAMD21"
-#define PORT_HEAP_SIZE (16384 + 4096)
+#define PORT_HEAP_SIZE                              (16384 + 4096)
+#define MICROPY_MODULE_WEAK_LINKS                   (0)
 #endif
 
 #ifdef SAMD51
-#define CIRCUITPY_MCU_FAMILY samd51
+#define CIRCUITPY_MCU_FAMILY                        samd51
 #define MICROPY_PY_SYS_PLATFORM                     "MicroChip SAMD51"
-#define PORT_HEAP_SIZE (0x20000) // 128KiB
+#define PORT_HEAP_SIZE                              (0x20000) // 128KiB
+#define MICROPY_MODULE_WEAK_LINKS                   (1)
 #endif
 
 #ifdef LONGINT_IMPL_NONE
@@ -290,6 +291,33 @@ extern const struct _mp_obj_module_t usb_hid_module;
     { MP_OBJ_NEW_QSTR(MP_QSTR_supervisor), (mp_obj_t)&supervisor_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&time_module }, \
     { MP_OBJ_NEW_QSTR(MP_QSTR_usb_hid),(mp_obj_t)&usb_hid_module },
+#elif MICROPY_MODULE_WEAK_LINKS
+#define MICROPY_PORT_BUILTIN_MODULES \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_analogio), (mp_obj_t)&analogio_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_board), (mp_obj_t)&board_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_busio), (mp_obj_t)&busio_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_digitalio), (mp_obj_t)&digitalio_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_microcontroller), (mp_obj_t)&microcontroller_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_neopixel_write),(mp_obj_t)&neopixel_write_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR__os), (mp_obj_t)&os_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_pulseio), (mp_obj_t)&pulseio_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_random), (mp_obj_t)&random_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_rtc), (mp_obj_t)&rtc_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_samd),(mp_obj_t)&samd_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_storage), (mp_obj_t)&storage_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_struct), (mp_obj_t)&struct_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_supervisor), (mp_obj_t)&supervisor_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_math), (mp_obj_t)&math_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR__time), (mp_obj_t)&time_module }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_usb_hid),(mp_obj_t)&usb_hid_module }, \
+    TOUCHIO_MODULE \
+    EXTRA_BUILTIN_MODULES
+
+#define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
+    { MP_ROM_QSTR(MP_QSTR_errno), MP_ROM_PTR(&mp_module_uerrno) }, \
+    { MP_ROM_QSTR(MP_QSTR_os), MP_ROM_PTR(&os_module) }, \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&time_module }, \
+
 #else
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_OBJ_NEW_QSTR(MP_QSTR_analogio), (mp_obj_t)&analogio_module }, \
