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, 66 insertions, 84 deletions

diff --git a/stmhal/modpyb.c b/stmhal/modpyb.c
index e602234fc..b8da948ab 100644
--- a/stmhal/modpyb.c
+++ b/stmhal/modpyb.c
@@ -34,10 +34,12 @@
 #include "py/obj.h"
 #include "py/gc.h"
 #include "py/builtin.h"
+#include "py/mphal.h"
 #include "lib/utils/pyexec.h"
-#include "lib/fatfs/ff.h"
-#include "lib/fatfs/diskio.h"
+#include "lib/oofatfs/ff.h"
+#include "lib/oofatfs/diskio.h"
 #include "gccollect.h"
+#include "stm32_it.h"
 #include "irq.h"
 #include "systick.h"
 #include "led.h"
@@ -61,22 +63,14 @@
 #include "usb.h"
 #include "portmodules.h"
 #include "modmachine.h"
-#include "extmod/fsusermount.h"
+#include "extmod/vfs.h"
 #include "extmod/utime_mphal.h"
 
-/// \function millis()
-/// Returns the number of milliseconds since the board was last reset.
-///
-/// The result is always a micropython smallint (31-bit signed number), so
-/// after 2^30 milliseconds (about 12.4 days) this will start to return
-/// negative numbers.
-STATIC mp_obj_t pyb_millis(void) {
-    // We want to "cast" the 32 bit unsigned into a small-int.  This means
-    // copying the MSB down 1 bit (extending the sign down), which is
-    // equivalent to just using the MP_OBJ_NEW_SMALL_INT macro.
-    return MP_OBJ_NEW_SMALL_INT(HAL_GetTick());
+STATIC mp_obj_t pyb_fault_debug(mp_obj_t value) {
+    pyb_hard_fault_debug = mp_obj_is_true(value);
+    return mp_const_none;
 }
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_millis_obj, pyb_millis);
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_fault_debug_obj, pyb_fault_debug);
 
 /// \function elapsed_millis(start)
 /// Returns the number of milliseconds which have elapsed since `start`.
@@ -90,25 +84,11 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_millis_obj, pyb_millis);
 ///         # Perform some operation
 STATIC mp_obj_t pyb_elapsed_millis(mp_obj_t start) {
     uint32_t startMillis = mp_obj_get_int(start);
-    uint32_t currMillis = HAL_GetTick();
+    uint32_t currMillis = mp_hal_ticks_ms();
     return MP_OBJ_NEW_SMALL_INT((currMillis - startMillis) & 0x3fffffff);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_elapsed_millis_obj, pyb_elapsed_millis);
 
-/// \function micros()
-/// Returns the number of microseconds since the board was last reset.
-///
-/// The result is always a micropython smallint (31-bit signed number), so
-/// after 2^30 microseconds (about 17.8 minutes) this will start to return
-/// negative numbers.
-STATIC mp_obj_t pyb_micros(void) {
-    // We want to "cast" the 32 bit unsigned into a small-int.  This means
-    // copying the MSB down 1 bit (extending the sign down), which is
-    // equivalent to just using the MP_OBJ_NEW_SMALL_INT macro.
-    return MP_OBJ_NEW_SMALL_INT(sys_tick_get_microseconds());
-}
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_micros_obj, pyb_micros);
-
 /// \function elapsed_micros(start)
 /// Returns the number of microseconds which have elapsed since `start`.
 ///
@@ -121,108 +101,110 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_0(pyb_micros_obj, pyb_micros);
 ///         # Perform some operation
 STATIC mp_obj_t pyb_elapsed_micros(mp_obj_t start) {
     uint32_t startMicros = mp_obj_get_int(start);
-    uint32_t currMicros = sys_tick_get_microseconds();
+    uint32_t currMicros = mp_hal_ticks_us();
     return MP_OBJ_NEW_SMALL_INT((currMicros - startMicros) & 0x3fffffff);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_elapsed_micros_obj, pyb_elapsed_micros);
 
 MP_DECLARE_CONST_FUN_OBJ_KW(pyb_main_obj); // defined in main.c
 
-STATIC const mp_map_elem_t pyb_module_globals_table[] = {
-    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_pyb) },
+STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_pyb) },
+
+    { MP_ROM_QSTR(MP_QSTR_fault_debug), MP_ROM_PTR(&pyb_fault_debug_obj) },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_bootloader), (mp_obj_t)&machine_bootloader_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_hard_reset), (mp_obj_t)&machine_reset_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_info), (mp_obj_t)&machine_info_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_unique_id), (mp_obj_t)&machine_unique_id_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_freq), (mp_obj_t)&machine_freq_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_repl_info), (mp_obj_t)&pyb_set_repl_info_obj },
+    { MP_ROM_QSTR(MP_QSTR_bootloader), MP_ROM_PTR(&machine_bootloader_obj) },
+    { MP_ROM_QSTR(MP_QSTR_hard_reset), MP_ROM_PTR(&machine_reset_obj) },
+    { MP_ROM_QSTR(MP_QSTR_info), MP_ROM_PTR(&machine_info_obj) },
+    { MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
+    { MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
+    { MP_ROM_QSTR(MP_QSTR_repl_info), MP_ROM_PTR(&pyb_set_repl_info_obj) },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_wfi), (mp_obj_t)&pyb_wfi_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_disable_irq), (mp_obj_t)&pyb_disable_irq_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_enable_irq), (mp_obj_t)&pyb_enable_irq_obj },
+    { MP_ROM_QSTR(MP_QSTR_wfi), MP_ROM_PTR(&pyb_wfi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&pyb_disable_irq_obj) },
+    { MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&pyb_enable_irq_obj) },
     #if IRQ_ENABLE_STATS
-    { MP_OBJ_NEW_QSTR(MP_QSTR_irq_stats), (mp_obj_t)&pyb_irq_stats_obj },
+    { MP_ROM_QSTR(MP_QSTR_irq_stats), MP_ROM_PTR(&pyb_irq_stats_obj) },
     #endif
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_stop), (mp_obj_t)&machine_sleep_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_standby), (mp_obj_t)&machine_deepsleep_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_main), (mp_obj_t)&pyb_main_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_repl_uart), (mp_obj_t)&mod_os_dupterm_obj },
+    { MP_ROM_QSTR(MP_QSTR_stop), MP_ROM_PTR(&machine_sleep_obj) },
+    { MP_ROM_QSTR(MP_QSTR_standby), MP_ROM_PTR(&machine_deepsleep_obj) },
+    { MP_ROM_QSTR(MP_QSTR_main), MP_ROM_PTR(&pyb_main_obj) },
+    { MP_ROM_QSTR(MP_QSTR_repl_uart), MP_ROM_PTR(&mod_os_dupterm_obj) },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_usb_mode), (mp_obj_t)&pyb_usb_mode_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_hid_mouse), (mp_obj_t)&pyb_usb_hid_mouse_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_hid_keyboard), (mp_obj_t)&pyb_usb_hid_keyboard_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_USB_VCP), (mp_obj_t)&pyb_usb_vcp_type },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_USB_HID), (mp_obj_t)&pyb_usb_hid_type },
+    { MP_ROM_QSTR(MP_QSTR_usb_mode), MP_ROM_PTR(&pyb_usb_mode_obj) },
+    { MP_ROM_QSTR(MP_QSTR_hid_mouse), MP_ROM_PTR(&pyb_usb_hid_mouse_obj) },
+    { MP_ROM_QSTR(MP_QSTR_hid_keyboard), MP_ROM_PTR(&pyb_usb_hid_keyboard_obj) },
+    { MP_ROM_QSTR(MP_QSTR_USB_VCP), MP_ROM_PTR(&pyb_usb_vcp_type) },
+    { MP_ROM_QSTR(MP_QSTR_USB_HID), MP_ROM_PTR(&pyb_usb_hid_type) },
     // these 2 are deprecated; use USB_VCP.isconnected and USB_HID.send instead
-    { MP_OBJ_NEW_QSTR(MP_QSTR_have_cdc), (mp_obj_t)&pyb_have_cdc_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_hid), (mp_obj_t)&pyb_hid_send_report_obj },
+    { MP_ROM_QSTR(MP_QSTR_have_cdc), MP_ROM_PTR(&pyb_have_cdc_obj) },
+    { MP_ROM_QSTR(MP_QSTR_hid), MP_ROM_PTR(&pyb_hid_send_report_obj) },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_millis), (mp_obj_t)&pyb_millis_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_elapsed_millis), (mp_obj_t)&pyb_elapsed_millis_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_micros), (mp_obj_t)&pyb_micros_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_elapsed_micros), (mp_obj_t)&pyb_elapsed_micros_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_delay), (mp_obj_t)&mp_utime_sleep_ms_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_udelay), (mp_obj_t)&mp_utime_sleep_us_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_sync), (mp_obj_t)&mod_os_sync_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_mount), (mp_obj_t)&fsuser_mount_obj },
+    { MP_ROM_QSTR(MP_QSTR_millis), MP_ROM_PTR(&mp_utime_ticks_ms_obj) },
+    { MP_ROM_QSTR(MP_QSTR_elapsed_millis), MP_ROM_PTR(&pyb_elapsed_millis_obj) },
+    { MP_ROM_QSTR(MP_QSTR_micros), MP_ROM_PTR(&mp_utime_ticks_us_obj) },
+    { MP_ROM_QSTR(MP_QSTR_elapsed_micros), MP_ROM_PTR(&pyb_elapsed_micros_obj) },
+    { MP_ROM_QSTR(MP_QSTR_delay), MP_ROM_PTR(&mp_utime_sleep_ms_obj) },
+    { MP_ROM_QSTR(MP_QSTR_udelay), MP_ROM_PTR(&mp_utime_sleep_us_obj) },
+    { MP_ROM_QSTR(MP_QSTR_sync), MP_ROM_PTR(&mod_os_sync_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mount), MP_ROM_PTR(&mp_vfs_mount_obj) },
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Timer), (mp_obj_t)&pyb_timer_type },
+    { MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&pyb_timer_type) },
 
 #if MICROPY_HW_ENABLE_RNG
-    { MP_OBJ_NEW_QSTR(MP_QSTR_rng), (mp_obj_t)&pyb_rng_get_obj },
+    { MP_ROM_QSTR(MP_QSTR_rng), MP_ROM_PTR(&pyb_rng_get_obj) },
 #endif
 
 #if MICROPY_HW_ENABLE_RTC
-    { MP_OBJ_NEW_QSTR(MP_QSTR_RTC), (mp_obj_t)&pyb_rtc_type },
+    { MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&pyb_rtc_type) },
 #endif
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Pin), (mp_obj_t)&pin_type },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_ExtInt), (mp_obj_t)&extint_type },
+    { MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&pin_type) },
+    { MP_ROM_QSTR(MP_QSTR_ExtInt), MP_ROM_PTR(&extint_type) },
 
 #if MICROPY_HW_ENABLE_SERVO
-    { MP_OBJ_NEW_QSTR(MP_QSTR_pwm), (mp_obj_t)&pyb_pwm_set_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_servo), (mp_obj_t)&pyb_servo_set_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Servo), (mp_obj_t)&pyb_servo_type },
+    { MP_ROM_QSTR(MP_QSTR_pwm), MP_ROM_PTR(&pyb_pwm_set_obj) },
+    { MP_ROM_QSTR(MP_QSTR_servo), MP_ROM_PTR(&pyb_servo_set_obj) },
+    { MP_ROM_QSTR(MP_QSTR_Servo), MP_ROM_PTR(&pyb_servo_type) },
 #endif
 
 #if MICROPY_HW_HAS_SWITCH
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Switch), (mp_obj_t)&pyb_switch_type },
+    { MP_ROM_QSTR(MP_QSTR_Switch), MP_ROM_PTR(&pyb_switch_type) },
 #endif
 
 #if MICROPY_HW_HAS_FLASH
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Flash), (mp_obj_t)&pyb_flash_type },
+    { MP_ROM_QSTR(MP_QSTR_Flash), MP_ROM_PTR(&pyb_flash_type) },
 #endif
 
 #if MICROPY_HW_HAS_SDCARD
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SD), (mp_obj_t)&pyb_sdcard_obj }, // now obsolete
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SDCard), (mp_obj_t)&pyb_sdcard_type },
+    { MP_ROM_QSTR(MP_QSTR_SD), MP_ROM_PTR(&pyb_sdcard_obj) }, // now obsolete
+    { MP_ROM_QSTR(MP_QSTR_SDCard), MP_ROM_PTR(&pyb_sdcard_type) },
 #endif
 
 #if defined(MICROPY_HW_LED1)
-    { MP_OBJ_NEW_QSTR(MP_QSTR_LED), (mp_obj_t)&pyb_led_type },
+    { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pyb_led_type) },
 #endif
-    { MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_i2c_type },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_SPI), (mp_obj_t)&pyb_spi_type },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_UART), (mp_obj_t)&pyb_uart_type },
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&pyb_i2c_type) },
+    { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&pyb_spi_type) },
+    { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&pyb_uart_type) },
 #if MICROPY_HW_ENABLE_CAN
-    { MP_OBJ_NEW_QSTR(MP_QSTR_CAN), (mp_obj_t)&pyb_can_type },
+    { MP_ROM_QSTR(MP_QSTR_CAN), MP_ROM_PTR(&pyb_can_type) },
 #endif
 
-    { MP_OBJ_NEW_QSTR(MP_QSTR_ADC), (mp_obj_t)&pyb_adc_type },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_ADCAll), (mp_obj_t)&pyb_adc_all_type },
+    { MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&pyb_adc_type) },
+    { MP_ROM_QSTR(MP_QSTR_ADCAll), MP_ROM_PTR(&pyb_adc_all_type) },
 
 #if MICROPY_HW_ENABLE_DAC
-    { MP_OBJ_NEW_QSTR(MP_QSTR_DAC), (mp_obj_t)&pyb_dac_type },
+    { MP_ROM_QSTR(MP_QSTR_DAC), MP_ROM_PTR(&pyb_dac_type) },
 #endif
 
 #if MICROPY_HW_HAS_MMA7660
-    { MP_OBJ_NEW_QSTR(MP_QSTR_Accel), (mp_obj_t)&pyb_accel_type },
+    { MP_ROM_QSTR(MP_QSTR_Accel), MP_ROM_PTR(&pyb_accel_type) },
 #endif
 
 #if MICROPY_HW_HAS_LCD
-    { MP_OBJ_NEW_QSTR(MP_QSTR_LCD), (mp_obj_t)&pyb_lcd_type },
+    { MP_ROM_QSTR(MP_QSTR_LCD), MP_ROM_PTR(&pyb_lcd_type) },
 #endif
 };