Merge tag 'v1.9.1'2.0.0-alpha.0

Fixes for stmhal USB mass storage, lwIP bindings and VFS regressions

This release provides an important fix for the USB mass storage device in
the stmhal port by implementing the SCSI SYNCHRONIZE_CACHE command, which
is now require by some Operating Systems.  There are also fixes for the
lwIP bindings to improve non-blocking sockets and error codes.  The VFS has
some regressions fixed including the ability to statvfs the root.

All changes are listed below.

py core:
- modbuiltins: add core-provided version of input() function
- objstr: catch case of negative "maxsplit" arg to str.rsplit()
- persistentcode: allow to compile with complex numbers disabled
- objstr: allow to compile with obj-repr D, and unicode disabled
- modsys: allow to compile with obj-repr D and PY_ATTRTUPLE disabled
- provide mp_decode_uint_skip() to help reduce stack usage
- makeqstrdefs.py: make script run correctly with Python 2.6
- objstringio: if created from immutable object, follow copy on write policy

extmod:
- modlwip: connect: for non-blocking mode, return EINPROGRESS
- modlwip: fix error codes for duplicate calls to connect()
- modlwip: accept: fix error code for non-blocking mode
- vfs: allow to statvfs the root directory
- vfs: allow "buffering" and "encoding" args to VFS's open()
- modframebuf: fix signed/unsigned comparison pendantic warning

lib:
- libm: use isfinite instead of finitef, for C99 compatibility
- utils/interrupt_char: remove support for KBD_EXCEPTION disabled

tests:
- basics/string_rsplit: add tests for negative "maxsplit" argument
- float: convert "sys.exit()" to "raise SystemExit"
- float/builtin_float_minmax: PEP8 fixes
- basics: convert "sys.exit()" to "raise SystemExit"
- convert remaining "sys.exit()" to "raise SystemExit"

unix port:
- convert to use core-provided version of built-in import()
- Makefile: replace references to make with $(MAKE)

windows port:
- convert to use core-provided version of built-in import()

qemu-arm port:
- Makefile: adjust object-file lists to get correct dependencies
- enable micropython.mem_*() functions to allow more tests

stmhal port:
- boards: enable DAC for NUCLEO_F767ZI board
- add support for NUCLEO_F446RE board
- pass USB handler as parameter to allow more than one USB handler
- usb: use local USB handler variable in Start-of-Frame handler
- usb: make state for USB device private to top-level USB driver
- usbdev: for MSC implement SCSI SYNCHRONIZE_CACHE command
- convert from using stmhal's input() to core provided version

cc3200 port:
- convert from using stmhal's input() to core provided version

teensy port:
- convert from using stmhal's input() to core provided version

esp8266 port:
- Makefile: replace references to make with $(MAKE)
- Makefile: add clean-modules target
- convert from using stmhal's input() to core provided version

zephyr port:
- modusocket: getaddrinfo: Fix mp_obj_len() usage
- define MICROPY_PY_SYS_PLATFORM (to "zephyr")
- machine_pin: use native Zephyr types for Zephyr API calls

docs:
- machine.Pin: remove out_value() method
- machine.Pin: add on() and off() methods
- esp8266: consistently replace Pin.high/low methods with .on/off
- esp8266/quickref: polish Pin.on()/off() examples
- network: move confusingly-named cc3200 Server class to its reference
- uos: deconditionalize, remove minor port-specific details
- uos: move cc3200 port legacy VFS mounting functions to its ref doc
- machine: sort machine classes in logical order, not alphabetically
- network: first step to describe standard network class interface

examples:
- embedding: use core-provided KeyboardInterrupt object

1 files changed, 33 insertions, 3 deletions

diff --git a/zephyr/mpconfigport.h b/zephyr/mpconfigport.h
index 26fb1410f..2f2526779 100644
--- a/zephyr/mpconfigport.h
+++ b/zephyr/mpconfigport.h
@@ -27,12 +27,15 @@
 
 // Include Zephyr's autoconf.h, which should be made first by Zephyr makefiles
 #include "autoconf.h"
+// Included here to get basic Zephyr environment (macros, etc.)
+#include <zephyr.h>
 
 // Usually passed from Makefile
 #ifndef MICROPY_HEAP_SIZE
 #define MICROPY_HEAP_SIZE (16 * 1024)
 #endif
 
+#define MICROPY_ENABLE_SOURCE_LINE  (1)
 #define MICROPY_STACK_CHECK         (1)
 #define MICROPY_ENABLE_GC           (1)
 #define MICROPY_HELPER_REPL         (1)
@@ -48,16 +51,25 @@
 #define MICROPY_PY_BUILTINS_RANGE_ATTRS (0)
 #define MICROPY_PY_BUILTINS_REVERSED (0)
 #define MICROPY_PY_BUILTINS_SET     (0)
+#define MICROPY_PY_BUILTINS_HELP    (1)
+#define MICROPY_PY_BUILTINS_HELP_TEXT zephyr_help_text
 #define MICROPY_PY_ARRAY            (0)
 #define MICROPY_PY_COLLECTIONS      (0)
 #define MICROPY_PY_CMATH            (0)
 #define MICROPY_PY_IO               (0)
 #define MICROPY_PY_MICROPYTHON_MEM_INFO (1)
 #define MICROPY_PY_MACHINE          (1)
+#define MICROPY_PY_MACHINE_PIN_MAKE_NEW mp_pin_make_new
 #define MICROPY_MODULE_WEAK_LINKS   (1)
 #define MICROPY_PY_STRUCT           (0)
+#ifdef CONFIG_NETWORKING
+// If we have networking, we likely want errno comfort
+#define MICROPY_PY_UERRNO           (1)
+#define MICROPY_PY_USOCKET          (1)
+#endif
 #define MICROPY_PY_UTIME            (1)
 #define MICROPY_PY_UTIME_MP_HAL     (1)
+#define MICROPY_PY_ZEPHYR           (1)
 #define MICROPY_PY_SYS_MODULES      (0)
 #define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_LONGLONG)
 #define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
@@ -68,6 +80,8 @@
 #define MICROPY_COMP_CONST (0)
 #define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (0)
 
+#define MICROPY_PY_SYS_PLATFORM "zephyr"
+
 #ifdef CONFIG_BOARD
 #define MICROPY_HW_BOARD_NAME "zephyr-" CONFIG_BOARD
 #else
@@ -89,8 +103,6 @@ typedef void *machine_ptr_t; // must be of pointer size
 typedef const void *machine_const_ptr_t; // must be of pointer size
 typedef long mp_off_t;
 
-#define BYTES_PER_WORD (sizeof(mp_int_t))
-
 #define MP_STATE_PORT MP_STATE_VM
 
 #define MICROPY_PORT_ROOT_POINTERS \
@@ -98,6 +110,16 @@ typedef long mp_off_t;
 
 extern const struct _mp_obj_module_t mp_module_machine;
 extern const struct _mp_obj_module_t mp_module_time;
+extern const struct _mp_obj_module_t mp_module_usocket;
+extern const struct _mp_obj_module_t mp_module_zephyr;
+
+#if MICROPY_PY_USOCKET
+#define MICROPY_PY_USOCKET_DEF { MP_ROM_QSTR(MP_QSTR_usocket), MP_ROM_PTR(&mp_module_usocket) },
+#define MICROPY_PY_USOCKET_WEAK_DEF { MP_OBJ_NEW_QSTR(MP_QSTR_socket), MP_ROM_PTR(&mp_module_usocket) },
+#else
+#define MICROPY_PY_USOCKET_DEF
+#define MICROPY_PY_USOCKET_WEAK_DEF
+#endif
 
 #if MICROPY_PY_UTIME
 #define MICROPY_PY_UTIME_DEF { MP_ROM_QSTR(MP_QSTR_utime), MP_ROM_PTR(&mp_module_time) },
@@ -105,14 +127,22 @@ extern const struct _mp_obj_module_t mp_module_time;
 #define MICROPY_PY_UTIME_DEF
 #endif
 
+#if MICROPY_PY_ZEPHYR
+#define MICROPY_PY_ZEPHYR_DEF { MP_ROM_QSTR(MP_QSTR_zephyr), MP_ROM_PTR(&mp_module_zephyr) },
+#else
+#define MICROPY_PY_ZEPHYR_DEF
+#endif
+
 #define MICROPY_PORT_BUILTIN_MODULES \
     { MP_OBJ_NEW_QSTR(MP_QSTR_machine), (mp_obj_t)&mp_module_machine }, \
+    MICROPY_PY_USOCKET_DEF \
     MICROPY_PY_UTIME_DEF \
+    MICROPY_PY_ZEPHYR_DEF \
 
 #define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
     { MP_OBJ_NEW_QSTR(MP_QSTR_time), MP_ROM_PTR(&mp_module_time) }, \
+    MICROPY_PY_USOCKET_WEAK_DEF \
 
 // extra built in names to add to the global namespace
 #define MICROPY_PORT_BUILTINS \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_help), (mp_obj_t)&mp_builtin_help_obj }, \