231 lines
7.3 KiB
C
231 lines
7.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020-2021 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include "py/compile.h"
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#include "py/runtime.h"
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#include "py/gc.h"
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#include "py/mperrno.h"
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#include "py/mphal.h"
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#include "py/stackctrl.h"
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#include "shared/readline/readline.h"
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#include "shared/runtime/gchelper.h"
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#include "shared/runtime/pyexec.h"
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#include "tusb.h"
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#include "uart.h"
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#include "modmachine.h"
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#include "modrp2.h"
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#include "genhdr/mpversion.h"
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#include "pico/stdlib.h"
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#include "pico/binary_info.h"
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#include "hardware/rtc.h"
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#include "hardware/structs/rosc.h"
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extern uint8_t __StackTop, __StackBottom;
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static char gc_heap[192 * 1024];
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// Embed version info in the binary in machine readable form
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bi_decl(bi_program_version_string(MICROPY_GIT_TAG));
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// Add a section to the picotool output similar to program features, but for frozen modules
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// (it will aggregate BINARY_INFO_ID_MP_FROZEN binary info)
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bi_decl(bi_program_feature_group_with_flags(BINARY_INFO_TAG_MICROPYTHON,
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BINARY_INFO_ID_MP_FROZEN, "frozen modules",
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BI_NAMED_GROUP_SEPARATE_COMMAS | BI_NAMED_GROUP_SORT_ALPHA));
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int main(int argc, char **argv) {
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#if MICROPY_HW_ENABLE_UART_REPL
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bi_decl(bi_program_feature("UART REPL"))
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setup_default_uart();
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mp_uart_init();
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#endif
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#if MICROPY_HW_ENABLE_USBDEV
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bi_decl(bi_program_feature("USB REPL"))
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tusb_init();
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#endif
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#if MICROPY_PY_THREAD
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bi_decl(bi_program_feature("thread support"))
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mp_thread_init();
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#endif
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// Start and initialise the RTC
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datetime_t t = {
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.year = 2021,
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.month = 1,
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.day = 1,
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.dotw = 4, // 0 is Monday, so 4 is Friday
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.hour = 0,
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.min = 0,
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.sec = 0,
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};
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rtc_init();
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rtc_set_datetime(&t);
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// Initialise stack extents and GC heap.
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mp_stack_set_top(&__StackTop);
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mp_stack_set_limit(&__StackTop - &__StackBottom - 256);
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gc_init(&gc_heap[0], &gc_heap[MP_ARRAY_SIZE(gc_heap)]);
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for (;;) {
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// Initialise MicroPython runtime.
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mp_init();
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_path), 0);
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_));
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mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR__slash_lib));
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mp_obj_list_init(MP_OBJ_TO_PTR(mp_sys_argv), 0);
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// Initialise sub-systems.
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readline_init0();
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machine_pin_init();
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rp2_pio_init();
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// Execute _boot.py to set up the filesystem.
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pyexec_frozen_module("_boot.py");
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// Execute user scripts.
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int ret = pyexec_file_if_exists("boot.py");
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if (ret & PYEXEC_FORCED_EXIT) {
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goto soft_reset_exit;
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}
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if (pyexec_mode_kind == PYEXEC_MODE_FRIENDLY_REPL) {
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ret = pyexec_file_if_exists("main.py");
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if (ret & PYEXEC_FORCED_EXIT) {
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goto soft_reset_exit;
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}
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}
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for (;;) {
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if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
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if (pyexec_raw_repl() != 0) {
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break;
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}
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} else {
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if (pyexec_friendly_repl() != 0) {
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break;
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}
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}
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}
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soft_reset_exit:
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mp_printf(MP_PYTHON_PRINTER, "MPY: soft reboot\n");
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rp2_pio_deinit();
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machine_pin_deinit();
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#if MICROPY_PY_THREAD
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mp_thread_deinit();
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#endif
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gc_sweep_all();
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mp_deinit();
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}
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return 0;
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}
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void gc_collect(void) {
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gc_collect_start();
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gc_helper_collect_regs_and_stack();
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#if MICROPY_PY_THREAD
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mp_thread_gc_others();
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#endif
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gc_collect_end();
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}
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void nlr_jump_fail(void *val) {
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printf("FATAL: uncaught exception %p\n", val);
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mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(val));
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for (;;) {
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__breakpoint();
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}
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}
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#ifndef NDEBUG
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void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
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printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
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panic("Assertion failed");
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}
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#endif
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#define POLY (0xD5)
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uint8_t rosc_random_u8(size_t cycles) {
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static uint8_t r;
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for (size_t i = 0; i < cycles; ++i) {
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r = ((r << 1) | rosc_hw->randombit) ^ (r & 0x80 ? POLY : 0);
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mp_hal_delay_us_fast(1);
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}
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return r;
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}
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uint32_t rosc_random_u32(void) {
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uint32_t value = 0;
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for (size_t i = 0; i < 4; ++i) {
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value = value << 8 | rosc_random_u8(32);
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}
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return value;
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}
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const char rp2_help_text[] =
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"Welcome to MicroPython!\n"
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"\n"
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"For online help please visit https://micropython.org/help/.\n"
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"\n"
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"For access to the hardware use the 'machine' module. RP2 specific commands\n"
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"are in the 'rp2' module.\n"
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"\n"
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"Quick overview of some objects:\n"
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" machine.Pin(pin) -- get a pin, eg machine.Pin(0)\n"
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" machine.Pin(pin, m, [p]) -- get a pin and configure it for IO mode m, pull mode p\n"
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" methods: init(..), value([v]), high(), low(), irq(handler)\n"
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" machine.ADC(pin) -- make an analog object from a pin\n"
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" methods: read_u16()\n"
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" machine.PWM(pin) -- make a PWM object from a pin\n"
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" methods: deinit(), freq([f]), duty_u16([d]), duty_ns([d])\n"
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" machine.I2C(id) -- create an I2C object (id=0,1)\n"
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" methods: readfrom(addr, buf, stop=True), writeto(addr, buf, stop=True)\n"
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" readfrom_mem(addr, memaddr, arg), writeto_mem(addr, memaddr, arg)\n"
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" machine.SPI(id, baudrate=1000000) -- create an SPI object (id=0,1)\n"
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" methods: read(nbytes, write=0x00), write(buf), write_readinto(wr_buf, rd_buf)\n"
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" machine.Timer(freq, callback) -- create a software timer object\n"
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" eg: machine.Timer(freq=1, callback=lambda t:print(t))\n"
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"\n"
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"Pins are numbered 0-29, and 26-29 have ADC capabilities\n"
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"Pin IO modes are: Pin.IN, Pin.OUT, Pin.ALT\n"
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"Pin pull modes are: Pin.PULL_UP, Pin.PULL_DOWN\n"
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"\n"
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"Useful control commands:\n"
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" CTRL-C -- interrupt a running program\n"
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" CTRL-D -- on a blank line, do a soft reset of the board\n"
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" CTRL-E -- on a blank line, enter paste mode\n"
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"\n"
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"For further help on a specific object, type help(obj)\n"
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"For a list of available modules, type help('modules')\n"
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;
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