main.c 27.6 KB
Newer Older
1
#include <stdio.h>
2
#include <string.h>
Damien's avatar
Damien committed
3
4
#include <stm32f4xx.h>
#include <stm32f4xx_rcc.h>
5
#include <stm32f4xx_syscfg.h>
6
#include <stm32f4xx_gpio.h>
7
#include <stm32f4xx_exti.h>
8
#include <stm32f4xx_tim.h>
Damien's avatar
Damien committed
9
#include <stm32f4xx_pwr.h>
10
#include <stm32f4xx_rtc.h>
11
#include <stm32f4xx_usart.h>
12
#include <stm32f4xx_rng.h>
13
#include <stm_misc.h>
Damien's avatar
Damien committed
14
15
#include "std.h"

16
#include "misc.h"
17
18
#include "ff.h"
#include "mpconfig.h"
19
#include "qstr.h"
20
21
22
#include "nlr.h"
#include "misc.h"
#include "lexer.h"
23
#include "lexerfatfs.h"
24
25
#include "parse.h"
#include "obj.h"
26
#include "compile.h"
27
28
29
#include "runtime0.h"
#include "runtime.h"
#include "repl.h"
Damien's avatar
Damien committed
30
#include "gc.h"
31
#include "gccollect.h"
32
#include "systick.h"
33
#include "pendsv.h"
34
#include "led.h"
35
#include "servo.h"
36
#include "lcd.h"
37
#include "storage.h"
38
#include "sdcard.h"
39
#include "mma.h"
40
#include "usart.h"
Damien's avatar
Damien committed
41
#include "usb.h"
42
#include "timer.h"
43
#include "audio.h"
44
#include "pybwlan.h"
45
#include "i2c.h"
46
#include "usrsw.h"
mux's avatar
mux committed
47
#include "adc.h"
mux's avatar
mux committed
48
#include "rtc.h"
mux's avatar
mux committed
49
#include "file.h"
50
51

int errno;
Damien's avatar
Damien committed
52

53
static FATFS fatfs0;
54
static FATFS fatfs1;
55

56
57
58
59
60
61
62
63
64
65
66
67
void flash_error(int n) {
    for (int i = 0; i < n; i++) {
        led_state(PYB_LED_R1, 1);
        led_state(PYB_LED_R2, 0);
        sys_tick_delay_ms(250);
        led_state(PYB_LED_R1, 0);
        led_state(PYB_LED_R2, 1);
        sys_tick_delay_ms(250);
    }
    led_state(PYB_LED_R2, 0);
}

Damien's avatar
Damien committed
68
void __fatal_error(const char *msg) {
mux's avatar
mux committed
69
#if MICROPY_HW_HAS_LCD
Damien's avatar
Damien committed
70
71
    lcd_print_strn("\nFATAL ERROR:\n", 14);
    lcd_print_strn(msg, strlen(msg));
mux's avatar
mux committed
72
#endif
Damien's avatar
Damien committed
73
    for (;;) {
74
        flash_error(1);
Damien's avatar
Damien committed
75
76
77
    }
}

78
79
static mp_obj_t pyb_config_source_dir = MP_OBJ_NULL;
static mp_obj_t pyb_config_main = MP_OBJ_NULL;
80

81
mp_obj_t pyb_source_dir(mp_obj_t source_dir) {
82
83
84
    if (MP_OBJ_IS_STR(source_dir)) {
        pyb_config_source_dir = source_dir;
    }
85
    return mp_const_none;
86
87
}

88
mp_obj_t pyb_main(mp_obj_t main) {
89
90
91
    if (MP_OBJ_IS_STR(main)) {
        pyb_config_main = main;
    }
92
    return mp_const_none;
93
94
95
}

// sync all file systems
96
mp_obj_t pyb_sync(void) {
97
    storage_flush();
98
    return mp_const_none;
99
}
Damien's avatar
Damien committed
100

101
102
103
mp_obj_t pyb_delay(mp_obj_t count) {
    sys_tick_delay_ms(mp_obj_get_int(count));
    return mp_const_none;
Damien's avatar
Damien committed
104
105
}

106
void fatality(void) {
107
108
109
110
111
112
    led_state(PYB_LED_R1, 1);
    led_state(PYB_LED_G1, 1);
    led_state(PYB_LED_R2, 1);
    led_state(PYB_LED_G2, 1);
}

113
static const char fresh_boot_py[] =
114
115
116
117
118
119
120
121
122
123
124
"# boot.py -- run on boot-up\n"
"# can run arbitrary Python, but best to keep it minimal\n"
"\n"
"pyb.source_dir('/src')\n"
"pyb.main('main.py')\n"
"#pyb.usb_usr('VCP')\n"
"#pyb.usb_msd(True, 'dual partition')\n"
"#pyb.flush_cache(False)\n"
"#pyb.error_log('error.txt')\n"
;

125
126
127
128
129
130
131
132
133
134
static const char fresh_main_py[] =
"# main.py -- put your code here!\n"
;

static const char *help_text =
"Welcome to Micro Python!\n\n"
"This is a *very* early version of Micro Python and has minimal functionality.\n\n"
"Specific commands for the board:\n"
"    pyb.info()     -- print some general information\n"
"    pyb.gc()       -- run the garbage collector\n"
135
"    pyb.repl_info(<val>) -- enable/disable printing of info after each command\n"
136
137
138
139
140
141
142
143
"    pyb.delay(<n>) -- wait for n milliseconds\n"
"    pyb.Led(<n>)   -- create Led object for LED n (n=1,2)\n"
"                      Led methods: on(), off()\n"
"    pyb.Servo(<n>) -- create Servo object for servo n (n=1,2,3,4)\n"
"                      Servo methods: angle(<x>)\n"
"    pyb.switch()   -- return True/False if switch pressed or not\n"
"    pyb.accel()    -- get accelerometer values\n"
"    pyb.rand()     -- get a 16-bit random number\n"
144
"    pyb.gpio(<port>)           -- get port value (port='A4' for example)\n"
145
"    pyb.gpio(<port>, <val>)    -- set port value, True or False, 1 or 0\n"
146
147
"    pyb.ADC(<port>) -- make an analog port object (port='C0' for example)\n"
"                       ADC methods: read()\n"
148
149
150
;

// get some help about available functions
151
static mp_obj_t pyb_help(void) {
152
    printf("%s", help_text);
153
    return mp_const_none;
154
155
}

156
// get lots of info about the board
157
static mp_obj_t pyb_info(void) {
158
159
160
161
162
163
    // get and print unique id; 96 bits
    {
        byte *id = (byte*)0x1fff7a10;
        printf("ID=%02x%02x%02x%02x:%02x%02x%02x%02x:%02x%02x%02x%02x\n", id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7], id[8], id[9], id[10], id[11]);
    }

164
165
166
167
168
169
170
171
172
173
    // get and print clock speeds
    // SYSCLK=168MHz, HCLK=168MHz, PCLK1=42MHz, PCLK2=84MHz
    {
        RCC_ClocksTypeDef rcc_clocks;
        RCC_GetClocksFreq(&rcc_clocks);
        printf("S=%lu\nH=%lu\nP1=%lu\nP2=%lu\n", rcc_clocks.SYSCLK_Frequency, rcc_clocks.HCLK_Frequency, rcc_clocks.PCLK1_Frequency, rcc_clocks.PCLK2_Frequency);
    }

    // to print info about memory
    {
174
175
176
177
178
179
180
        printf("_text_end=%p\n", &_text_end);
        printf("_data_start_init=%p\n", &_data_start_init);
        printf("_data_start=%p\n", &_data_start);
        printf("_data_end=%p\n", &_data_end);
        printf("_bss_start=%p\n", &_bss_start);
        printf("_bss_end=%p\n", &_bss_end);
        printf("_stack_end=%p\n", &_stack_end);
181
        printf("_ram_start=%p\n", &_ram_start);
182
        printf("_heap_start=%p\n", &_heap_start);
Damien George's avatar
Damien George committed
183
184
185
186
187
188
189
190
191
        printf("_heap_end=%p\n", &_heap_end);
        printf("_ram_end=%p\n", &_ram_end);
    }

    // qstr info
    {
        uint n_pool, n_qstr, n_str_data_bytes, n_total_bytes;
        qstr_pool_info(&n_pool, &n_qstr, &n_str_data_bytes, &n_total_bytes);
        printf("qstr:\n  n_pool=%u\n  n_qstr=%u\n  n_str_data_bytes=%u\n  n_total_bytes=%u\n", n_pool, n_qstr, n_str_data_bytes, n_total_bytes);
192
193
    }

194
195
196
197
198
199
200
201
202
203
    // GC info
    {
        gc_info_t info;
        gc_info(&info);
        printf("GC:\n");
        printf("  %lu total\n", info.total);
        printf("  %lu : %lu\n", info.used, info.free);
        printf("  1=%lu 2=%lu m=%lu\n", info.num_1block, info.num_2block, info.max_block);
    }

204
205
206
207
208
    // free space on flash
    {
        DWORD nclst;
        FATFS *fatfs;
        f_getfree("0:", &nclst, &fatfs);
209
        printf("LFS free: %u bytes\n", (uint)(nclst * fatfs->csize * 512));
210
    }
211

212
    return mp_const_none;
213
214
}

215
216
217
218
219
220
221
static bool repl_display_debugging_info = 0;

static mp_obj_t pyb_set_repl_info(mp_obj_t o_value) {
    repl_display_debugging_info = mp_obj_get_int(o_value);
    return mp_const_none;
}

222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
static void SYSCLKConfig_STOP(void) {
    /* After wake-up from STOP reconfigure the system clock */
    /* Enable HSE */
    RCC_HSEConfig(RCC_HSE_ON);

    /* Wait till HSE is ready */
    while (RCC_GetFlagStatus(RCC_FLAG_HSERDY) == RESET) {
    }

    /* Enable PLL */
    RCC_PLLCmd(ENABLE);

    /* Wait till PLL is ready */
    while (RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) {
    }

    /* Select PLL as system clock source */
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);

    /* Wait till PLL is used as system clock source */
    while (RCC_GetSYSCLKSource() != 0x08) {
    }
}

246
static mp_obj_t pyb_stop(void) {
247
248
249
250
251
252
253
254
255
256
257
258
    PWR_EnterSTANDBYMode();
    //PWR_FlashPowerDownCmd(ENABLE); don't know what the logic is with this

    /* Enter Stop Mode */
    PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);

    /* Configures system clock after wake-up from STOP: enable HSE, PLL and select 
     *        PLL as system clock source (HSE and PLL are disabled in STOP mode) */
    SYSCLKConfig_STOP();

    //PWR_FlashPowerDownCmd(DISABLE);

259
    return mp_const_none;
260
261
}

262
static mp_obj_t pyb_standby(void) {
263
    PWR_EnterSTANDBYMode();
264
    return mp_const_none;
265
266
}

Damien's avatar
Damien committed
267
268
269
270
271
272
273
274
275
276
277
278
char *strdup(const char *str) {
    uint32_t len = strlen(str);
    char *s2 = m_new(char, len + 1);
    memcpy(s2, str, len);
    s2[len] = 0;
    return s2;
}

#define READLINE_HIST_SIZE (8)

static const char *readline_hist[READLINE_HIST_SIZE] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};

279
void stdout_tx_str(const char *str) {
280
281
282
    if (pyb_usart_global_debug != PYB_USART_NONE) {
        usart_tx_str(pyb_usart_global_debug, str);
    }
283
284
285
#if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD
    lcd_print_str(str);
#endif
286
287
288
    usb_vcp_send_str(str);
}

289
int readline(vstr_t *line, const char *prompt) {
290
    stdout_tx_str(prompt);
291
    int len = vstr_len(line);
Damien's avatar
Damien committed
292
293
    int escape = 0;
    int hist_num = 0;
294
    for (;;) {
295
296
        char c;
        for (;;) {
297
298
299
300
301
302
303
#ifdef USE_HOST_MODE
            pyb_usb_host_process();
            c = pyb_usb_host_get_keyboard();
            if (c != 0) {
                break;
            }
#endif
304
305
306
            if (usb_vcp_rx_any() != 0) {
                c = usb_vcp_rx_get();
                break;
307
308
            } else if (pyb_usart_global_debug != PYB_USART_NONE && usart_rx_any(pyb_usart_global_debug)) {
                c = usart_rx_char(pyb_usart_global_debug);
309
                break;
310
            }
Damien's avatar
Damien committed
311
            sys_tick_delay_ms(1);
312
313
314
            if (storage_needs_flush()) {
                storage_flush();
            }
315
        }
Damien's avatar
Damien committed
316
        if (escape == 0) {
317
            if (c == VCP_CHAR_CTRL_D && vstr_len(line) == len) {
Damien's avatar
Damien committed
318
319
                return 0;
            } else if (c == '\r') {
320
                stdout_tx_str("\r\n");
Damien's avatar
Damien committed
321
322
323
324
325
326
327
328
329
330
                for (int i = READLINE_HIST_SIZE - 1; i > 0; i--) {
                    readline_hist[i] = readline_hist[i - 1];
                }
                readline_hist[0] = strdup(vstr_str(line));
                return 1;
            } else if (c == 27) {
                escape = true;
            } else if (c == 127) {
                if (vstr_len(line) > len) {
                    vstr_cut_tail(line, 1);
331
                    stdout_tx_str("\b \b");
Damien's avatar
Damien committed
332
333
334
                }
            } else if (32 <= c && c <= 126) {
                vstr_add_char(line, c);
335
                stdout_tx_str(line->buf + line->len - 1);
336
            }
Damien's avatar
Damien committed
337
338
339
340
341
342
343
344
345
346
347
348
349
        } else if (escape == 1) {
            if (c == '[') {
                escape = 2;
            } else {
                escape = 0;
            }
        } else if (escape == 2) {
            escape = 0;
            if (c == 'A') {
                // up arrow
                if (hist_num < READLINE_HIST_SIZE && readline_hist[hist_num] != NULL) {
                    // erase line
                    for (int i = line->len - len; i > 0; i--) {
350
                        stdout_tx_str("\b \b");
Damien's avatar
Damien committed
351
352
353
354
355
                    }
                    // set line to history
                    line->len = len;
                    vstr_add_str(line, readline_hist[hist_num]);
                    // draw line
356
                    stdout_tx_str(readline_hist[hist_num]);
Damien's avatar
Damien committed
357
358
359
360
361
362
                    // increase hist num
                    hist_num += 1;
                }
            }
        } else {
            escape = 0;
363
        }
Damien's avatar
Damien committed
364
        sys_tick_delay_ms(10);
365
    }
366
367
}

368
void do_repl(void) {
369
370
371
372
373
374
#if defined(USE_HOST_MODE) && MICROPY_HW_HAS_LCD
    // in host mode, we enable the LCD for the repl
    mp_obj_t lcd_o = rt_call_function_0(rt_load_name(qstr_from_str("LCD")));
    rt_call_function_1(rt_load_attr(lcd_o, qstr_from_str("light")), mp_const_true);
#endif

375
    stdout_tx_str("Micro Python build <git hash> on 25/1/2014; " MICROPY_HW_BOARD_NAME " with STM32F405RG\r\n");
376
    stdout_tx_str("Type \"help()\" for more information.\r\n");
377
378

    vstr_t line;
379
    vstr_init(&line, 32);
380
381

    for (;;) {
382
383
384
        vstr_reset(&line);
        int ret = readline(&line, ">>> ");
        if (ret == 0) {
385
            // EOF
386
387
388
389
390
            break;
        }

        if (vstr_len(&line) == 0) {
            continue;
391
        }
392

393
        if (mp_repl_is_compound_stmt(vstr_str(&line))) {
394
            for (;;) {
395
396
397
398
399
                vstr_add_char(&line, '\n');
                int len = vstr_len(&line);
                int ret = readline(&line, "... ");
                if (ret == 0 || vstr_len(&line) == len) {
                    // done entering compound statement
400
401
402
403
404
                    break;
                }
            }
        }

405
        mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, vstr_str(&line), vstr_len(&line), 0);
406
407
408
        qstr parse_exc_id;
        const char *parse_exc_msg;
        mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT, &parse_exc_id, &parse_exc_msg);
409
        qstr source_name = mp_lexer_source_name(lex);
410
411
412
413
414
415
416
417
418

        if (pn == MP_PARSE_NODE_NULL) {
            // parse error
            mp_lexer_show_error_pythonic_prefix(lex);
            printf("%s: %s\n", qstr_str(parse_exc_id), parse_exc_msg);
            mp_lexer_free(lex);
        } else {
            // parse okay
            mp_lexer_free(lex);
419
            mp_obj_t module_fun = mp_compile(pn, source_name, true);
420
            mp_parse_node_free(pn);
421
422
423
424
            if (module_fun != mp_const_none) {
                nlr_buf_t nlr;
                uint32_t start = sys_tick_counter;
                if (nlr_push(&nlr) == 0) {
425
                    usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); // allow ctrl-C to interrupt us
426
                    rt_call_function_0(module_fun);
427
                    usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
428
429
430
                    nlr_pop();
                } else {
                    // uncaught exception
431
432
                    // FIXME it could be that an interrupt happens just before we disable it here
                    usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
433
                    mp_obj_print_exception((mp_obj_t)nlr.ret_val);
434
                }
435
436
437
438
439
440
441
442

                // display debugging info if wanted
                if (repl_display_debugging_info) {
                    uint32_t ticks = sys_tick_counter - start; // TODO implement a function that does this properly
                    printf("took %lu ms\n", ticks);
                    gc_collect();
                    pyb_info();
                }
443
444
445
            }
        }
    }
446

447
    stdout_tx_str("\r\n");
448
449
450
}

bool do_file(const char *filename) {
Damien George's avatar
Damien George committed
451
    mp_lexer_t *lex = mp_lexer_new_from_file(filename);
452
453
454
455
456
457

    if (lex == NULL) {
        printf("could not open file '%s' for reading\n", filename);
        return false;
    }

458
459
460
    qstr parse_exc_id;
    const char *parse_exc_msg;
    mp_parse_node_t pn = mp_parse(lex, MP_PARSE_FILE_INPUT, &parse_exc_id, &parse_exc_msg);
461
    qstr source_name = mp_lexer_source_name(lex);
462

463
    if (pn == MP_PARSE_NODE_NULL) {
464
465
466
467
        // parse error
        mp_lexer_show_error_pythonic_prefix(lex);
        printf("%s: %s\n", qstr_str(parse_exc_id), parse_exc_msg);
        mp_lexer_free(lex);
468
469
470
        return false;
    }

471
472
    mp_lexer_free(lex);

473
    mp_obj_t module_fun = mp_compile(pn, source_name, false);
474
475
    mp_parse_node_free(pn);

476
    if (module_fun == mp_const_none) {
477
478
479
480
481
        return false;
    }

    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
482
        usb_vcp_set_interrupt_char(VCP_CHAR_CTRL_C); // allow ctrl-C to interrupt us
483
        rt_call_function_0(module_fun);
484
        usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
485
486
487
488
        nlr_pop();
        return true;
    } else {
        // uncaught exception
489
490
        // FIXME it could be that an interrupt happens just before we disable it here
        usb_vcp_set_interrupt_char(VCP_CHAR_NONE); // disable interrupt
491
        mp_obj_print_exception((mp_obj_t)nlr.ret_val);
492
493
        return false;
    }
494
495
}

496
mp_obj_t pyb_gpio(uint n_args, mp_obj_t *args) {
497
    //assert(1 <= n_args && n_args <= 2);
Damien's avatar
Damien committed
498

499
    const char *pin_name = mp_obj_str_get_str(args[0]);
500
501
502
503
504
505
    GPIO_TypeDef *port;
    switch (pin_name[0]) {
        case 'A': case 'a': port = GPIOA; break;
        case 'B': case 'b': port = GPIOB; break;
        case 'C': case 'c': port = GPIOC; break;
        default: goto pin_error;
506
    }
507
508
509
510
    uint pin_num = 0;
    for (const char *s = pin_name + 1; *s; s++) {
        if (!('0' <= *s && *s <= '9')) {
            goto pin_error;
Damien's avatar
Damien committed
511
        }
512
513
514
515
        pin_num = 10 * pin_num + *s - '0';
    }
    if (!(0 <= pin_num && pin_num <= 15)) {
        goto pin_error;
Damien's avatar
Damien committed
516
    }
517

518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
    if (n_args == 1) {
        // get pin
        if ((port->IDR & (1 << pin_num)) != (uint32_t)Bit_RESET) {
            return MP_OBJ_NEW_SMALL_INT(1);
        } else {
            return MP_OBJ_NEW_SMALL_INT(0);
        }
    } else {
        // set pin
        if (rt_is_true(args[1])) {
            // set pin high
            port->BSRRL = 1 << pin_num;
        } else {
            // set pin low
            port->BSRRH = 1 << pin_num;
        }
        return mp_const_none;
    }
536

537
pin_error:
538
    nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_ValueError, "pin %s does not exist", pin_name));
Damien's avatar
Damien committed
539
540
}

541
542
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(pyb_gpio_obj, 1, 2, pyb_gpio);

543
544
mp_obj_t pyb_hid_send_report(mp_obj_t arg) {
    mp_obj_t *items = mp_obj_get_array_fixed_n(arg, 4);
545
    uint8_t data[4];
546
547
548
549
    data[0] = mp_obj_get_int(items[0]);
    data[1] = mp_obj_get_int(items[1]);
    data[2] = mp_obj_get_int(items[2]);
    data[3] = mp_obj_get_int(items[3]);
550
    usb_hid_send_report(data);
551
    return mp_const_none;
552
553
}

554
555
mp_obj_t pyb_rng_get(void) {
    return mp_obj_new_int(RNG_GetRandomNumber() >> 16);
556
557
}

558
559
560
561
mp_obj_t pyb_millis(void) {
    return mp_obj_new_int(sys_tick_counter);
}

562
int main(void) {
563
    // TODO disable JTAG
Damien's avatar
Damien committed
564

565
566
567
    // update the SystemCoreClock variable
    SystemCoreClockUpdate();

568
569
570
571
    // set interrupt priority config to use all 4 bits for pre-empting
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);

    // enable the CCM RAM and the GPIO's
572
    RCC->AHB1ENR |= RCC_AHB1ENR_CCMDATARAMEN | RCC_AHB1ENR_GPIOAEN | RCC_AHB1ENR_GPIOBEN | RCC_AHB1ENR_GPIOCEN | RCC_AHB1ENR_GPIODEN;
573

mux's avatar
mux committed
574
#if MICROPY_HW_HAS_SDCARD
575
    {
576
577
578
579
580
581
582
583
584
585
586
587
588
        // configure SDIO pins to be high to start with (apparently makes it more robust)
        // FIXME this is not making them high, it just makes them outputs...
        GPIO_InitTypeDef GPIO_InitStructure;
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
        GPIO_Init(GPIOC, &GPIO_InitStructure);

        // Configure PD.02 CMD line
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
        GPIO_Init(GPIOD, &GPIO_InitStructure);
589
    }
mux's avatar
mux committed
590
#endif
Dave Hylands's avatar
Dave Hylands committed
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
#if defined(NETDUINO_PLUS_2)
    {
        GPIO_InitTypeDef GPIO_InitStructure;
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;

#if MICROPY_HW_HAS_SDCARD
        // Turn on the power enable for the sdcard (PB1)
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
        GPIO_Init(GPIOB, &GPIO_InitStructure);
        GPIO_WriteBit(GPIOB, GPIO_Pin_1, Bit_SET);
#endif

        // Turn on the power for the 5V on the expansion header (PB2)
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
        GPIO_Init(GPIOB, &GPIO_InitStructure);
        GPIO_WriteBit(GPIOB, GPIO_Pin_2, Bit_SET);
    }
#endif
612

613
614
    // basic sub-system init
    sys_tick_init();
615
    pendsv_init();
Damien's avatar
Damien committed
616
    led_init();
mux's avatar
mux committed
617
618

#if MICROPY_HW_ENABLE_RTC
619
    rtc_init();
mux's avatar
mux committed
620
#endif
621
622
623
624
625

    // turn on LED to indicate bootup
    led_state(PYB_LED_G1, 1);

    // more sub-system init
mux's avatar
mux committed
626
#if MICROPY_HW_HAS_SWITCH
627
    switch_init();
628
629
630
#endif
#if MICROPY_HW_HAS_SDCARD
    sdcard_init();
mux's avatar
mux committed
631
#endif
632
    storage_init();
633

634
    // uncomment these 2 lines if you want REPL on USART_6 (or another usart) as well as on USB VCP
635
    //pyb_usart_global_debug = PYB_USART_3;
636
    //usart_init(pyb_usart_global_debug, 115200);
Damien's avatar
Damien committed
637

638
639
    int first_soft_reset = true;

640
641
soft_reset:

Damien's avatar
Damien committed
642
    // GC init
643
    gc_init(&_heap_start, &_heap_end);
Damien's avatar
Damien committed
644

645
    // Micro Python init
646
647
    qstr_init();
    rt_init();
648

mux's avatar
mux committed
649
#if MICROPY_HW_HAS_LCD
650
    // LCD init (just creates class, init hardware by calling LCD())
651
    lcd_init();
mux's avatar
mux committed
652
#endif
653

mux's avatar
mux committed
654
#if MICROPY_HW_ENABLE_SERVO
655
656
    // servo
    servo_init();
mux's avatar
mux committed
657
#endif
658

mux's avatar
mux committed
659
#if MICROPY_HW_ENABLE_AUDIO
660
    // audio
mux's avatar
mux committed
661
662
    audio_init();
#endif
663

mux's avatar
mux committed
664
#if MICROPY_HW_ENABLE_TIMER
665
666
    // timer
    timer_init();
mux's avatar
mux committed
667
#endif
668

mux's avatar
mux committed
669
#if MICROPY_HW_ENABLE_RNG
670
    // RNG
mux's avatar
mux committed
671
672
673
    RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_RNG, ENABLE);
    RNG_Cmd(ENABLE);
#endif
674

675
    // add some functions to the python namespace
676
    {
677
678
679
680
        rt_store_name(MP_QSTR_help, rt_make_function_n(0, pyb_help));

        mp_obj_t m = mp_obj_new_module(MP_QSTR_pyb);
        rt_store_attr(m, MP_QSTR_info, rt_make_function_n(0, pyb_info));
681
682
        rt_store_attr(m, MP_QSTR_gc, (mp_obj_t)&pyb_gc_obj);
        rt_store_attr(m, qstr_from_str("repl_info"), rt_make_function_n(1, pyb_set_repl_info));
mux's avatar
mux committed
683
#if MICROPY_HW_HAS_SDCARD
684
        rt_store_attr(m, qstr_from_str("SD"), (mp_obj_t)&pyb_sdcard_obj);
mux's avatar
mux committed
685
#endif
686
687
688
689
690
691
        rt_store_attr(m, MP_QSTR_stop, rt_make_function_n(0, pyb_stop));
        rt_store_attr(m, MP_QSTR_standby, rt_make_function_n(0, pyb_standby));
        rt_store_attr(m, MP_QSTR_source_dir, rt_make_function_n(1, pyb_source_dir));
        rt_store_attr(m, MP_QSTR_main, rt_make_function_n(1, pyb_main));
        rt_store_attr(m, MP_QSTR_sync, rt_make_function_n(0, pyb_sync));
        rt_store_attr(m, MP_QSTR_delay, rt_make_function_n(1, pyb_delay));
mux's avatar
mux committed
692
#if MICROPY_HW_HAS_SWITCH
693
        rt_store_attr(m, MP_QSTR_switch, (mp_obj_t)&pyb_switch_obj);
mux's avatar
mux committed
694
695
#endif
#if MICROPY_HW_ENABLE_SERVO
696
        rt_store_attr(m, MP_QSTR_servo, rt_make_function_n(2, pyb_servo_set));
mux's avatar
mux committed
697
#endif
698
        rt_store_attr(m, MP_QSTR_pwm, rt_make_function_n(2, pyb_pwm_set));
mux's avatar
mux committed
699
#if MICROPY_HW_HAS_MMA7660
700
701
702
        rt_store_attr(m, MP_QSTR_accel, (mp_obj_t)&pyb_mma_read_obj);
        rt_store_attr(m, MP_QSTR_mma_read, (mp_obj_t)&pyb_mma_read_all_obj);
        rt_store_attr(m, MP_QSTR_mma_mode, (mp_obj_t)&pyb_mma_write_mode_obj);
703
#endif
704
        rt_store_attr(m, MP_QSTR_hid, rt_make_function_n(1, pyb_hid_send_report));
705
#if MICROPY_HW_ENABLE_RTC
706
        rt_store_attr(m, MP_QSTR_time, rt_make_function_n(0, pyb_rtc_read));
mux's avatar
mux committed
707
708
#endif
#if MICROPY_HW_ENABLE_RNG
709
        rt_store_attr(m, MP_QSTR_rand, rt_make_function_n(0, pyb_rng_get));
mux's avatar
mux committed
710
#endif
711
        rt_store_attr(m, MP_QSTR_Led, (mp_obj_t)&pyb_Led_obj);
mux's avatar
mux committed
712
#if MICROPY_HW_ENABLE_SERVO
713
        rt_store_attr(m, MP_QSTR_Servo, rt_make_function_n(1, pyb_Servo));
mux's avatar
mux committed
714
#endif
715
716
717
        rt_store_attr(m, MP_QSTR_I2C, rt_make_function_n(2, pyb_I2C));
        rt_store_attr(m, MP_QSTR_gpio, (mp_obj_t)&pyb_gpio_obj);
        rt_store_attr(m, MP_QSTR_Usart, rt_make_function_n(2, pyb_Usart));
718
719
        rt_store_attr(m, qstr_from_str("ADC_all"), (mp_obj_t)&pyb_ADC_all_obj);
        rt_store_attr(m, MP_QSTR_ADC, (mp_obj_t)&pyb_ADC_obj);
720
        rt_store_attr(m, qstr_from_str("millis"), rt_make_function_n(0, pyb_millis));
721
722
723
        rt_store_name(MP_QSTR_pyb, m);

        rt_store_name(MP_QSTR_open, rt_make_function_n(2, pyb_io_open));
724
    }
725

726
727
    // check if user switch held (initiates reset of filesystem)
    bool reset_filesystem = false;
mux's avatar
mux committed
728
#if MICROPY_HW_HAS_SWITCH
729
    if (switch_get()) {
730
731
        reset_filesystem = true;
        for (int i = 0; i < 50; i++) {
732
            if (!switch_get()) {
733
734
735
736
737
738
                reset_filesystem = false;
                break;
            }
            sys_tick_delay_ms(10);
        }
    }
mux's avatar
mux committed
739
#endif
740
741
742
743
    // local filesystem init
    {
        // try to mount the flash
        FRESULT res = f_mount(&fatfs0, "0:", 1);
744
        if (!reset_filesystem && res == FR_OK) {
745
            // mount sucessful
746
        } else if (reset_filesystem || res == FR_NO_FILESYSTEM) {
747
            // no filesystem, so create a fresh one
748
            // TODO doesn't seem to work correctly when reset_filesystem is true...
749
750
751
752
753
754
755
756
757
758
759
760

            // LED on to indicate creation of LFS
            led_state(PYB_LED_R2, 1);
            uint32_t stc = sys_tick_counter;

            res = f_mkfs("0:", 0, 0);
            if (res == FR_OK) {
                // success creating fresh LFS
            } else {
                __fatal_error("could not create LFS");
            }

761
762
763
764
765
766
767
768
769
770
771
772
            // create src directory
            res = f_mkdir("0:/src");
            // ignore result from mkdir

            // create empty main.py
            FIL fp;
            f_open(&fp, "0:/src/main.py", FA_WRITE | FA_CREATE_ALWAYS);
            UINT n;
            f_write(&fp, fresh_main_py, sizeof(fresh_main_py) - 1 /* don't count null terminator */, &n);
            // TODO check we could write n bytes
            f_close(&fp);

773
774
            // keep LED on for at least 200ms
            sys_tick_wait_at_least(stc, 200);
775
776
777
778
            led_state(PYB_LED_R2, 0);
        } else {
            __fatal_error("could not access LFS");
        }
Damien's avatar
Damien committed
779
780
    }

781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
    // make sure we have a /boot.py
    {
        FILINFO fno;
        FRESULT res = f_stat("0:/boot.py", &fno);
        if (res == FR_OK) {
            if (fno.fattrib & AM_DIR) {
                // exists as a directory
                // TODO handle this case
                // see http://elm-chan.org/fsw/ff/img/app2.c for a "rm -rf" implementation
            } else {
                // exists as a file, good!
            }
        } else {
            // doesn't exist, create fresh file

            // LED on to indicate creation of boot.py
            led_state(PYB_LED_R2, 1);
            uint32_t stc = sys_tick_counter;

            FIL fp;
            f_open(&fp, "0:/boot.py", FA_WRITE | FA_CREATE_ALWAYS);
            UINT n;
803
            f_write(&fp, fresh_boot_py, sizeof(fresh_boot_py) - 1 /* don't count null terminator */, &n);
804
805
806
            // TODO check we could write n bytes
            f_close(&fp);

807
808
            // keep LED on for at least 200ms
            sys_tick_wait_at_least(stc, 200);
809
810
811
812
            led_state(PYB_LED_R2, 0);
        }
    }

813
814
815
816
817
    // run /boot.py
    if (!do_file("0:/boot.py")) {
        flash_error(4);
    }

818
819
820
821
822
823
824
#ifdef USE_HOST_MODE
    // USB host
    pyb_usb_host_init();
#elif defined(USE_DEVICE_MODE)
    // USB device
    pyb_usb_dev_init();
#endif
825

826
    if (first_soft_reset) {
mux's avatar
mux committed
827
#if MICROPY_HW_HAS_MMA7660
828
        // MMA: init and reset address to zero
Damien's avatar
Damien committed
829
        mma_init();
830
#endif
Damien's avatar
Damien committed
831
832
    }

833
834
    // turn boot-up LED off
    led_state(PYB_LED_G1, 0);
835

836
837
838
839
840
841
842
843
844
845
#if MICROPY_HW_HAS_SDCARD
    // if an SD card is present then mount it on 1:/
    if (sdcard_is_present()) {
        FRESULT res = f_mount(&fatfs1, "1:", 1);
        if (res != FR_OK) {
            printf("[SD] could not mount SD card\n");
        }
    }
#endif

846
847
848
849
    // run main script
    {
        vstr_t *vstr = vstr_new();
        vstr_add_str(vstr, "0:/");
850
        if (pyb_config_source_dir == MP_OBJ_NULL) {
851
852
            vstr_add_str(vstr, "src");
        } else {
853
            vstr_add_str(vstr, mp_obj_str_get_str(pyb_config_source_dir));
854
855
        }
        vstr_add_char(vstr, '/');
856
        if (pyb_config_main == MP_OBJ_NULL) {
857
858
            vstr_add_str(vstr, "main.py");
        } else {
859
            vstr_add_str(vstr, mp_obj_str_get_str(pyb_config_main));
860
861
862
        }
        if (!do_file(vstr_str(vstr))) {
            flash_error(3);
863
        }
864
        vstr_free(vstr);
865
866
    }

Damien's avatar
Damien committed
867

mux's avatar
mux committed
868
#if MICROPY_HW_HAS_MMA7660
869
870
871
872
873
874
875
876
    // HID example
    if (0) {
        uint8_t data[4];
        data[0] = 0;
        data[1] = 1;
        data[2] = -2;
        data[3] = 0;
        for (;;) {
mux's avatar
mux committed
877
        #if MICROPY_HW_HAS_SWITCH
878
            if (switch_get()) {
879
880
881
882
                data[0] = 0x01; // 0x04 is middle, 0x02 is right
            } else {
                data[0] = 0x00;
            }
mux's avatar
mux committed
883
884
885
        #else
            data[0] = 0x00;
        #endif
886
            mma_start(0x4c /* MMA_ADDR */, 1);
887
            mma_send_byte(0);
888
            mma_restart(0x4c /* MMA_ADDR */, 0);
889
890
891
892
893
894
895
896
897
898
899
900
            for (int i = 0; i <= 1; i++) {
                int v = mma_read_ack() & 0x3f;
                if (v & 0x20) {
                    v |= ~0x1f;
                }
                data[1 + i] = v;
            }
            mma_read_nack();
            usb_hid_send_report(data);
            sys_tick_delay_ms(15);
        }
    }
901
#endif
902

mux's avatar
mux committed
903
#if MICROPY_HW_HAS_WLAN
904
    // wifi
mux's avatar
mux committed
905
906
907
    pyb_wlan_init();
    pyb_wlan_start();
#endif
908

909
910
    do_repl();

911
912
913
914
    printf("PYB: sync filesystems\n");
    pyb_sync();

    printf("PYB: soft reboot\n");
915
916

    first_soft_reset = false;
917
    goto soft_reset;
Damien's avatar
Damien committed
918
}
919

920
921
// these 2 functions seem to actually work... no idea why
// replacing with libgcc does not work (probably due to wrong calling conventions)
922
923
924
925
double __aeabi_f2d(float x) {
    // TODO
    return 0.0;
}
Damien's avatar
Damien committed
926
927
928
929
930
931
932
933
934
935

float __aeabi_d2f(double x) {
    // TODO
    return 0.0;
}

double sqrt(double x) {
    // TODO
    return 0.0;
}
936
937
938
939
940

machine_float_t machine_sqrt(machine_float_t x) {
    // TODO
    return x;
}