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micropython/ports/nrf/main.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2015 Glenn Ruben Bakke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "py/nlr.h"
#include "py/mperrno.h"
#include "py/lexer.h"
#include "py/parse.h"
#include "py/obj.h"
#include "py/runtime.h"
#include "py/stackctrl.h"
#include "py/gc.h"
#include "py/compile.h"
#include "extmod/modmachine.h"
#include "shared/runtime/pyexec.h"
#include "readline.h"
#include "gccollect.h"
#include "modmachine.h"
#include "modmusic.h"
#include "modules/os/microbitfs.h"
#include "led.h"
#include "uart.h"
#include "nrf.h"
#include "pin.h"
#include "spi.h"
#include "i2c.h"
#include "adc.h"
#include "rtcounter.h"
#include "mphalport.h"
#if MICROPY_PY_MACHINE_HW_PWM
#include "pwm.h"
#endif
#include "timer.h"
#if BLUETOOTH_SD
#include "nrf_sdm.h"
#endif
#if (MICROPY_PY_BLE_NUS)
#include "ble_uart.h"
#endif
#if MICROPY_PY_MACHINE_SOFT_PWM
#include "ticker.h"
#include "softpwm.h"
#endif
#if MICROPY_HW_USB_CDC
#include "usb_cdc.h"
#endif
#if MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
#include "extmod/vfs_fat.h"
#include "lib/oofatfs/ff.h"
#include "extmod/vfs.h"
#include "flashbdev.h"
#endif
void do_str(const char *src, mp_parse_input_kind_t input_kind) {
mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
if (lex == NULL) {
printf("MemoryError: lexer could not allocate memory\n");
return;
}
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
qstr source_name = lex->source_name;
mp_parse_tree_t pn = mp_parse(lex, input_kind);
mp_obj_t module_fun = mp_compile(&pn, source_name, true);
mp_call_function_0(module_fun);
nlr_pop();
} else {
// uncaught exception
mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
}
}
extern uint32_t _heap_start;
extern uint32_t _heap_end;
int main(int argc, char **argv) {
// Hook for a board to run code at start up, for example check if a
// bootloader should be entered instead of the main application.
MICROPY_BOARD_STARTUP();
MICROPY_BOARD_EARLY_INIT();
soft_reset:
#if MICROPY_PY_TIME_TICKS
rtc1_init_time_ticks();
#endif
led_init();
led_state(1, 1); // MICROPY_HW_LED_1 aka MICROPY_HW_LED_RED
mp_stack_set_top(&_ram_end);
// Stack limit should be less than real stack size, so we have a chance
// to recover from limit hit. (Limit is measured in bytes.)
mp_stack_set_limit((char *)&_ram_end - (char *)&_heap_end - 400);
machine_init();
gc_init(&_heap_start, &_heap_end);
mp_init();
readline_init0();
#if MICROPY_PY_MACHINE_SPI
spi_init0();
#endif
#if MICROPY_PY_MACHINE_I2C
i2c_init0();
#endif
#if MICROPY_PY_MACHINE_ADC
adc_init0();
#endif
#if MICROPY_PY_MACHINE_HW_PWM
pwm_init0();
#endif
#if MICROPY_PY_MACHINE_RTCOUNTER
rtc_init0();
#endif
#if MICROPY_PY_MACHINE_TIMER_NRF
timer_init0();
#endif
#if MICROPY_PY_MACHINE_UART
uart_init0();
#endif
#if (MICROPY_PY_BLE_NUS == 0) && (MICROPY_HW_USB_CDC == 0)
{
mp_obj_t args[2] = {
MP_OBJ_NEW_SMALL_INT(0),
MP_OBJ_NEW_SMALL_INT(115200),
};
MP_STATE_VM(dupterm_objs[0]) = MP_OBJ_TYPE_GET_SLOT(&machine_uart_type, make_new)((mp_obj_t)&machine_uart_type, MP_ARRAY_SIZE(args), 0, args);
}
#endif
pin_init0();
#if MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
flashbdev_init();
// Try to mount the flash on "/flash" and chdir to it for the boot-up directory.
mp_obj_t mount_point = MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash);
int ret = mp_vfs_mount_and_chdir_protected((mp_obj_t)&nrf_flash_obj, mount_point);
if ((ret == -MP_ENODEV) || (ret == -MP_EIO)) {
pyexec_frozen_module("_mkfs.py", false); // Frozen script for formatting flash filesystem.
ret = mp_vfs_mount_and_chdir_protected((mp_obj_t)&nrf_flash_obj, mount_point);
}
if (ret != 0) {
printf("MPY: can't mount flash\n");
} else {
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_flash_slash_lib));
}
#endif
#if MICROPY_MBFS
microbit_filesystem_init();
#endif
#if MICROPY_HW_HAS_SDCARD
// if an SD card is present then mount it on /sd/
if (sdcard_is_present()) {
// create vfs object
fs_user_mount_t *vfs = m_new_obj_maybe(fs_user_mount_t);
if (vfs == NULL) {
goto no_mem_for_sd;
}
vfs->str = "/sd";
vfs->len = 3;
vfs->flags = MP_BLOCKDEV_FLAG_FREE_OBJ;
sdcard_init_vfs(vfs);
// put the sd device in slot 1 (it will be unused at this point)
MP_STATE_PORT(fs_user_mount)[1] = vfs;
FRESULT res = f_mount(&vfs->fatfs, vfs->str, 1);
if (res != FR_OK) {
printf("MPY: can't mount SD card\n");
MP_STATE_PORT(fs_user_mount)[1] = NULL;
m_del_obj(fs_user_mount_t, vfs);
} else {
// TODO these should go before the /flash entries in the path
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd));
mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_sd_slash_lib));
// use SD card as current directory
f_chdrive("/sd");
}
no_mem_for_sd:;
}
#endif
// Main script is finished, so now go into REPL mode.
// The REPL mode can change, or it can request a soft reset.
int ret_code = 0;
#if MICROPY_PY_BLE_NUS
ble_uart_init0();
#endif
#if MICROPY_PY_MACHINE_SOFT_PWM
ticker_init0();
softpwm_init0();
#endif
#if MICROPY_PY_MUSIC
microbit_music_init0();
#endif
#if BOARD_SPECIFIC_MODULES
board_modules_init0();
#endif
#if MICROPY_PY_MACHINE_SOFT_PWM
ticker_start();
pwm_start();
#endif
led_state(1, 0);
#if MICROPY_HW_USB_CDC
usb_cdc_init();
#endif
#if MICROPY_VFS || MICROPY_MBFS || MICROPY_MODULE_FROZEN
// run boot.py and main.py if they exist.
ret = pyexec_file_if_exists("boot.py");
if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL && ret != 0) {
pyexec_file_if_exists("main.py");
}
#endif
for (;;) {
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
if (pyexec_raw_repl() != 0) {
break;
}
} else {
ret_code = pyexec_friendly_repl();
if (ret_code != 0) {
break;
}
}
}
#if MICROPY_PY_MACHINE_HW_PWM
pwm_deinit_all();
#endif
mp_deinit();
printf("MPY: soft reboot\n");
#if BLUETOOTH_SD
sd_softdevice_disable();
#endif
goto soft_reset;
return 0;
}
#if !MICROPY_VFS
#if MICROPY_MBFS
// Use micro:bit filesystem
mp_lexer_t *mp_lexer_new_from_file(qstr filename) {
return os_mbfs_new_reader(qstr_str(filename));
}
mp_import_stat_t mp_import_stat(const char *path) {
return os_mbfs_import_stat(path);
}
mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return os_mbfs_open(n_args, args);
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
#else
// use dummy functions - no filesystem available
mp_lexer_t *mp_lexer_new_from_file(qstr filename) {
mp_raise_OSError(MP_ENOENT);
}
mp_import_stat_t mp_import_stat(const char *path) {
return MP_IMPORT_STAT_NO_EXIST;
}
mp_obj_t mp_builtin_open(size_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
mp_raise_OSError(MP_EPERM);
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);
#endif
#endif
void HardFault_Handler(void) {
#if defined(NRF52_SERIES) || defined(NRF91_SERIES)
static volatile uint32_t reg;
static volatile uint32_t reg2;
static volatile uint32_t bfar;
reg = SCB->HFSR;
reg2 = SCB->CFSR;
bfar = SCB->BFAR;
for (int i = 0; i < 0; i++) {
(void)reg;
(void)reg2;
(void)bfar;
}
#endif
}
void NORETURN __fatal_error(const char *msg) {
while (1) {
;
}
}
void nlr_jump_fail(void *val) {
printf("FATAL: uncaught exception %p\n", val);
mp_obj_print_exception(&mp_plat_print, (mp_obj_t)val);
__fatal_error("");
}
void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
__fatal_error("Assertion failed");
}
void _start(void) {
main(0, NULL);
}
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