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, 28 insertions, 8 deletions

diff --git a/cc3200/mpconfigport.h b/cc3200/mpconfigport.h
index 5b6a035d5..4bd583a4b 100644
--- a/cc3200/mpconfigport.h
+++ b/cc3200/mpconfigport.h
@@ -55,7 +55,7 @@
 #define MICROPY_FLOAT_IMPL                          (MICROPY_FLOAT_IMPL_NONE)
 #define MICROPY_OPT_COMPUTED_GOTO                   (0)
 #define MICROPY_OPT_CACHE_MAP_LOOKUP_IN_BYTECODE    (0)
-#define MICROPY_READER_FATFS                        (1)
+#define MICROPY_READER_VFS                          (1)
 #ifndef DEBUG // we need ram on the launchxl while debugging
 #define MICROPY_CPYTHON_COMPAT                      (1)
 #else
@@ -68,18 +68,21 @@
 #define MICROPY_FATFS_MAX_LFN                       (MICROPY_ALLOC_PATH_MAX)
 #define MICROPY_FATFS_LFN_CODE_PAGE                 (437) // 1=SFN/ANSI 437=LFN/U.S.(OEM)
 #define MICROPY_FATFS_RPATH                         (2)
-#define MICROPY_FATFS_VOLUMES                       (2)
 #define MICROPY_FATFS_REENTRANT                     (1)
 #define MICROPY_FATFS_TIMEOUT                       (2500)
 #define MICROPY_FATFS_SYNC_T                        SemaphoreHandle_t
-#define MICROPY_FSUSERMOUNT_ADHOC                   (1)
 
 #define MICROPY_STREAMS_NON_BLOCK                   (1)
 #define MICROPY_MODULE_WEAK_LINKS                   (1)
 #define MICROPY_CAN_OVERRIDE_BUILTINS               (1)
+#define MICROPY_USE_INTERNAL_ERRNO                  (1)
+#define MICROPY_VFS                                 (1)
+#define MICROPY_VFS_FAT                             (1)
 #define MICROPY_PY_ASYNC_AWAIT (0)
-#define MICROPY_PY_BUILTINS_TIMEOUTERROR            (1)
 #define MICROPY_PY_ALL_SPECIAL_METHODS              (1)
+#define MICROPY_PY_BUILTINS_INPUT                   (1)
+#define MICROPY_PY_BUILTINS_HELP                    (1)
+#define MICROPY_PY_BUILTINS_HELP_TEXT               cc3200_help_text
 #ifndef DEBUG
 #define MICROPY_PY_BUILTINS_STR_UNICODE             (1)
 #define MICROPY_PY_BUILTINS_STR_SPLITLINES          (1)
@@ -104,6 +107,8 @@
 #define MICROPY_PY_CMATH                            (0)
 #define MICROPY_PY_IO                               (1)
 #define MICROPY_PY_IO_FILEIO                        (1)
+#define MICROPY_PY_UERRNO                           (1)
+#define MICROPY_PY_UERRNO_ERRORCODE                 (0)
 #define MICROPY_PY_THREAD                           (1)
 #define MICROPY_PY_THREAD_GIL                       (1)
 #define MICROPY_PY_UBINASCII                        (0)
@@ -114,14 +119,30 @@
 #define MICROPY_PY_UHEAPQ                           (0)
 #define MICROPY_PY_UHASHLIB                         (0)
 #define MICROPY_PY_USELECT                          (1)
+#define MICROPY_PY_UTIME_MP_HAL                     (1)
 
 #define MICROPY_ENABLE_EMERGENCY_EXCEPTION_BUF      (1)
 #define MICROPY_EMERGENCY_EXCEPTION_BUF_SIZE        (0)
 
+// We define our own list of errno constants to include in uerrno module
+#define MICROPY_PY_UERRNO_LIST \
+    X(EPERM) \
+    X(EIO) \
+    X(ENODEV) \
+    X(EINVAL) \
+    X(ETIMEDOUT) \
+
+// TODO these should be generic, not bound to fatfs
+#define mp_type_fileio fatfs_type_fileio
+#define mp_type_textio fatfs_type_textio
+
+// use vfs's functions for import stat and builtin open
+#define mp_import_stat mp_vfs_import_stat
+#define mp_builtin_open mp_vfs_open
+#define mp_builtin_open_obj mp_vfs_open_obj
+
 // 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 },   \
-    { MP_OBJ_NEW_QSTR(MP_QSTR_input), (mp_obj_t)&mp_builtin_input_obj },  \
     { MP_OBJ_NEW_QSTR(MP_QSTR_open),  (mp_obj_t)&mp_builtin_open_obj },   \
 
 // extra built in modules to add to the list of known ones
@@ -149,6 +170,7 @@ extern const struct _mp_obj_module_t mp_module_ussl;
     { MP_OBJ_NEW_QSTR(MP_QSTR_ussl),        (mp_obj_t)&mp_module_ussl },      \
 
 #define MICROPY_PORT_BUILTIN_MODULE_WEAK_LINKS \
+    { MP_OBJ_NEW_QSTR(MP_QSTR_errno),       (mp_obj_t)&mp_module_uerrno },    \
     { MP_OBJ_NEW_QSTR(MP_QSTR_struct),      (mp_obj_t)&mp_module_ustruct },   \
     { MP_OBJ_NEW_QSTR(MP_QSTR_re),          (mp_obj_t)&mp_module_ure },       \
     { MP_OBJ_NEW_QSTR(MP_QSTR_json),        (mp_obj_t)&mp_module_ujson },     \
@@ -173,13 +195,11 @@ extern const struct _mp_obj_module_t mp_module_ussl;
     mp_obj_list_t pyb_sleep_obj_list;                                     \
     mp_obj_list_t mp_irq_obj_list;                                        \
     mp_obj_list_t pyb_timer_channel_obj_list;                             \
-    mp_obj_list_t mount_obj_list;                                         \
     struct _pyb_uart_obj_t *pyb_uart_objs[2];                             \
     struct _os_term_dup_obj_t *os_term_dup_obj;                           \
 
 
 // type definitions for the specific machine
-#define BYTES_PER_WORD                              (4)
 #define MICROPY_MAKE_POINTER_CALLABLE(p)            ((void*)((mp_uint_t)(p) | 1))
 #define MP_SSIZE_MAX                                (0x7FFFFFFF)