stm32/modpyb: Introduce MICROPY_PY_PYB_LEGACY config option for pyb mod.

This is enabled by default.  When it is disabled all legacy functions and
classes in the pyb module are excluded from the build.

ports/stm32/modpyb.c

@@ -69,6 +69,8 @@ STATIC mp_obj_t pyb_fault_debug(mp_obj_t value) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_fault_debug_obj, pyb_fault_debug);
 
+#if MICROPY_PY_PYB_LEGACY
+
 /// \function elapsed_millis(start)
 /// Returns the number of milliseconds which have elapsed since `start`.
 ///
@@ -103,6 +105,8 @@ STATIC mp_obj_t pyb_elapsed_micros(mp_obj_t start) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(pyb_elapsed_micros_obj, pyb_elapsed_micros);
 
+#endif
+
 MP_DECLARE_CONST_FUN_OBJ_KW(pyb_main_obj); // defined in main.c
 
 // Get or set the UART object that the REPL is repeated on.
@@ -136,11 +140,13 @@ STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_fault_debug), MP_ROM_PTR(&pyb_fault_debug_obj) },
 
+    #if MICROPY_PY_PYB_LEGACY
     { 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) },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_repl_info), MP_ROM_PTR(&pyb_set_repl_info_obj) },
 
     { MP_ROM_QSTR(MP_QSTR_wfi), MP_ROM_PTR(&pyb_wfi_obj) },
@@ -150,8 +156,10 @@ STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_irq_stats), MP_ROM_PTR(&pyb_irq_stats_obj) },
     #endif
 
+    #if MICROPY_PY_PYB_LEGACY
     { MP_ROM_QSTR(MP_QSTR_stop), MP_ROM_PTR(&machine_sleep_obj) },
     { MP_ROM_QSTR(MP_QSTR_standby), MP_ROM_PTR(&machine_deepsleep_obj) },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_main), MP_ROM_PTR(&pyb_main_obj) },
     { MP_ROM_QSTR(MP_QSTR_repl_uart), MP_ROM_PTR(&pyb_repl_uart_obj) },
 
@@ -161,11 +169,14 @@ STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
     { 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) },
+    #if MICROPY_PY_PYB_LEGACY
     // these 2 are deprecated; use USB_VCP.isconnected and USB_HID.send instead
     { 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) },
     #endif
+    #endif
 
+    #if MICROPY_PY_PYB_LEGACY
     { 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) },
@@ -174,6 +185,7 @@ STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
     { 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) },
+    #endif
 
     // This function is not intended to be public and may be moved elsewhere
     { MP_ROM_QSTR(MP_QSTR_dht_readinto), MP_ROM_PTR(&dht_readinto_obj) },
@@ -206,7 +218,9 @@ STATIC const mp_rom_map_elem_t pyb_module_globals_table[] = {
 #endif
 
 #if MICROPY_HW_HAS_SDCARD
+    #if MICROPY_PY_PYB_LEGACY
     { MP_ROM_QSTR(MP_QSTR_SD), MP_ROM_PTR(&pyb_sdcard_obj) }, // now obsolete
+    #endif
     { MP_ROM_QSTR(MP_QSTR_SDCard), MP_ROM_PTR(&pyb_sdcard_type) },
 #endif
 

ports/stm32/mpconfigboard_common.h

@@ -37,6 +37,11 @@
 #define MICROPY_PY_STM (1)
 #endif
 
+// Whether to include legacy functions and classes in the pyb module
+#ifndef MICROPY_PY_PYB_LEGACY
+#define MICROPY_PY_PYB_LEGACY (1)
+#endif
+
 // Whether to enable storage on the internal flash of the MCU
 #ifndef MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
 #define MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE (1)