forked from micropython/micropython
-
Notifications
You must be signed in to change notification settings - Fork 0
/
modmachine.c
302 lines (274 loc) · 11.5 KB
/
modmachine.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Damien P. George
*
* 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 "py/runtime.h"
#include "extmod/machine_bitstream.h"
#include "extmod/machine_mem.h"
#include "extmod/machine_pulse.h"
#include "extmod/machine_i2c.h"
#include "extmod/machine_signal.h"
#include "extmod/machine_spi.h"
#include "drivers/dht/dht.h"
#include "shared/runtime/pyexec.h"
#include "modmachine.h"
#include "samd_soc.h"
// ASF 4
#include "hal_flash.h"
#include "hal_init.h"
#include "hpl_gclk_base.h"
#include "hpl_pm_base.h"
#if MICROPY_PY_MACHINE
#if defined(MCU_SAMD21)
#define DBL_TAP_ADDR ((volatile uint32_t *)(HMCRAMC0_ADDR + HMCRAMC0_SIZE - 4))
#elif defined(MCU_SAMD51)
#define DBL_TAP_ADDR ((volatile uint32_t *)(HSRAM_ADDR + HSRAM_SIZE - 4))
#endif
// A board may define a DPL_TAP_ADDR_ALT, which will be set as well
// Needed at the moment for Sparkfun SAMD51 Thing Plus
#define DBL_TAP_MAGIC_LOADER 0xf01669ef
#define DBL_TAP_MAGIC_RESET 0xf02669ef
#define LIGHTSLEEP_CPU_FREQ 200000
extern bool EIC_occured;
extern uint32_t _dbl_tap_addr;
STATIC mp_obj_t machine_soft_reset(void) {
pyexec_system_exit = PYEXEC_FORCED_EXIT;
mp_raise_type(&mp_type_SystemExit);
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_soft_reset_obj, machine_soft_reset);
STATIC mp_obj_t machine_reset(void) {
*DBL_TAP_ADDR = DBL_TAP_MAGIC_RESET;
#ifdef DBL_TAP_ADDR_ALT
*DBL_TAP_ADDR_ALT = DBL_TAP_MAGIC_RESET;
#endif
NVIC_SystemReset();
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_obj, machine_reset);
NORETURN mp_obj_t machine_bootloader(size_t n_args, const mp_obj_t *args) {
*DBL_TAP_ADDR = DBL_TAP_MAGIC_LOADER;
#ifdef DBL_TAP_ADDR_ALT
*DBL_TAP_ADDR_ALT = DBL_TAP_MAGIC_LOADER;
#endif
NVIC_SystemReset();
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_bootloader_obj, 0, 1, machine_bootloader);
STATIC mp_obj_t machine_freq(size_t n_args, const mp_obj_t *args) {
if (n_args == 0) {
return MP_OBJ_NEW_SMALL_INT(get_cpu_freq());
} else {
uint32_t freq = mp_obj_get_int(args[0]);
if (freq >= 1000000 && freq <= MAX_CPU_FREQ) {
set_cpu_freq(freq);
}
return mp_const_none;
}
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_freq_obj, 0, 1, machine_freq);
STATIC mp_obj_t machine_unique_id(void) {
// Each device has a unique 128-bit serial number which is a concatenation of four 32-bit
// words contained at the following addresses. The uniqueness of the serial number is
// guaranteed only when using all 128 bits.
// Atmel SAM D21E / SAM D21G / SAM D21J
// SMART ARM-Based Microcontroller
// DATASHEET
// 9.6 (SAMD51) or 9.3.3 (or 10.3.3 depending on which manual)(SAMD21) Serial Number
//
// EXAMPLE (SAMD21)
// ----------------
// OpenOCD:
// Word0:
// > at91samd21g18.cpu mdw 0x0080A00C 1
// 0x0080a00c: 6e27f15f
// Words 1-3:
// > at91samd21g18.cpu mdw 0x0080A040 3
// 0x0080a040: 50534b54 332e3120 ff091645
//
// MicroPython (this code and same order as shown in Arduino IDE)
// >>> binascii.hexlify(machine.unique_id())
// b'6e27f15f50534b54332e3120ff091645'
#if defined(MCU_SAMD21)
uint32_t *id_addresses[4] = {(uint32_t *)0x0080A00C, (uint32_t *)0x0080A040,
(uint32_t *)0x0080A044, (uint32_t *)0x0080A048};
#elif defined(MCU_SAMD51)
uint32_t *id_addresses[4] = {(uint32_t *)0x008061FC, (uint32_t *)0x00806010,
(uint32_t *)0x00806014, (uint32_t *)0x00806018};
#endif
uint8_t raw_id[16];
for (int i = 0; i < 4; i++) {
for (int k = 0; k < 4; k++) {
// 'Reverse' the read bytes into a 32 bit word (Consistent with Arduino)
raw_id[4 * i + k] = (*(id_addresses[i]) >> (24 - k * 8)) & 0xff;
}
}
return mp_obj_new_bytes((byte *)&raw_id, sizeof(raw_id));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_unique_id_obj, machine_unique_id);
STATIC mp_obj_t machine_idle(void) {
MICROPY_EVENT_POLL_HOOK;
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_0(machine_idle_obj, machine_idle);
STATIC mp_obj_t machine_disable_irq(void) {
uint32_t state = MICROPY_BEGIN_ATOMIC_SECTION();
return mp_obj_new_int(state);
}
MP_DEFINE_CONST_FUN_OBJ_0(machine_disable_irq_obj, machine_disable_irq);
STATIC mp_obj_t machine_enable_irq(mp_obj_t state_in) {
uint32_t state = mp_obj_get_int(state_in);
MICROPY_END_ATOMIC_SECTION(state);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(machine_enable_irq_obj, machine_enable_irq);
STATIC mp_obj_t machine_reset_cause(void) {
#if defined(MCU_SAMD21)
return MP_OBJ_NEW_SMALL_INT(PM->RCAUSE.reg);
#elif defined(MCU_SAMD51)
return MP_OBJ_NEW_SMALL_INT(RSTC->RCAUSE.reg);
#else
return MP_OBJ_NEW_SMALL_INT(0);
#endif
}
MP_DEFINE_CONST_FUN_OBJ_0(machine_reset_cause_obj, machine_reset_cause);
STATIC mp_obj_t machine_lightsleep(size_t n_args, const mp_obj_t *args) {
int32_t duration = -1;
uint32_t freq = get_cpu_freq();
if (n_args > 0) {
duration = mp_obj_get_int(args[0]);
}
EIC_occured = false;
// Slow down
set_cpu_freq(LIGHTSLEEP_CPU_FREQ);
#if defined(MCU_SAMD21)
// Switch the peripheral clock off
GCLK->GENCTRL.reg = GCLK_GENCTRL_ID(2);
while (GCLK->STATUS.bit.SYNCBUSY) {
}
// Switch the EIC temporarily to GCLK3, since GCLK2 is off
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK3 | EIC_GCLK_ID;
if (duration > 0) {
uint32_t t0 = systick_ms;
while ((systick_ms - t0 < duration) && (EIC_occured == false)) {
__WFI();
}
} else {
while (EIC_occured == false) {
__WFI();
}
}
GCLK->CLKCTRL.reg = GCLK_CLKCTRL_CLKEN | GCLK_CLKCTRL_GEN_GCLK2 | EIC_GCLK_ID;
#elif defined(MCU_SAMD51)
// Switch the peripheral clock off
GCLK->GENCTRL[2].reg = 0;
while (GCLK->SYNCBUSY.bit.GENCTRL2) {
}
// Switch the EIC temporarily to GCLK3, since GCLK2 is off
GCLK->PCHCTRL[EIC_GCLK_ID].reg = GCLK_PCHCTRL_CHEN | GCLK_PCHCTRL_GEN_GCLK3;
if (duration > 0) {
uint32_t t0 = systick_ms;
while ((systick_ms - t0 < duration) && (EIC_occured == false)) {
__WFI();
}
} else {
while (EIC_occured == false) {
__WFI();
}
}
GCLK->PCHCTRL[EIC_GCLK_ID].reg = GCLK_PCHCTRL_CHEN | GCLK_PCHCTRL_GEN_GCLK2;
#endif
// Speed up again
set_cpu_freq(freq);
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_lightsleep_obj, 0, 1, machine_lightsleep);
STATIC const mp_rom_map_elem_t machine_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_machine) },
{ MP_ROM_QSTR(MP_QSTR_soft_reset), MP_ROM_PTR(&machine_soft_reset_obj) },
{ MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR(&machine_reset_obj) },
{ MP_ROM_QSTR(MP_QSTR_bootloader), MP_ROM_PTR(&machine_bootloader_obj) },
{ MP_ROM_QSTR(MP_QSTR_freq), MP_ROM_PTR(&machine_freq_obj) },
{ MP_ROM_QSTR(MP_QSTR_mem8), MP_ROM_PTR(&machine_mem8_obj) },
{ MP_ROM_QSTR(MP_QSTR_mem16), MP_ROM_PTR(&machine_mem16_obj) },
{ MP_ROM_QSTR(MP_QSTR_mem32), MP_ROM_PTR(&machine_mem32_obj) },
{ MP_ROM_QSTR(MP_QSTR_unique_id), MP_ROM_PTR(&machine_unique_id_obj) },
#if MICROPY_PY_MACHINE_ADC
{ MP_ROM_QSTR(MP_QSTR_ADC), MP_ROM_PTR(&machine_adc_type) },
#endif
#if MICROPY_PY_MACHINE_DAC
{ MP_ROM_QSTR(MP_QSTR_DAC), MP_ROM_PTR(&machine_dac_type) },
#endif
{ MP_ROM_QSTR(MP_QSTR_Pin), MP_ROM_PTR(&machine_pin_type) },
{ MP_ROM_QSTR(MP_QSTR_Signal), MP_ROM_PTR(&machine_signal_type) },
#if MICROPY_PY_MACHINE_PWM
{ MP_ROM_QSTR(MP_QSTR_PWM), MP_ROM_PTR(&machine_pwm_type) },
#endif
#if MICROPY_PY_MACHINE_SOFTI2C
{ MP_ROM_QSTR(MP_QSTR_SoftI2C), MP_ROM_PTR(&mp_machine_soft_i2c_type) },
#endif
#if MICROPY_PY_MACHINE_I2C
{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&machine_i2c_type) },
#endif
#if MICROPY_PY_MACHINE_SOFTSPI
{ MP_ROM_QSTR(MP_QSTR_SoftSPI), MP_ROM_PTR(&mp_machine_soft_spi_type) },
#endif
#if MICROPY_PY_MACHINE_SPI
{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&machine_spi_type) },
#endif
{ MP_ROM_QSTR(MP_QSTR_Timer), MP_ROM_PTR(&machine_timer_type) },
#if MICROPY_PY_MACHINE_UART
{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&machine_uart_type) },
#endif
{ MP_ROM_QSTR(MP_QSTR_WDT), MP_ROM_PTR(&machine_wdt_type) },
#if MICROPY_PY_MACHINE_RTC
{ MP_ROM_QSTR(MP_QSTR_RTC), MP_ROM_PTR(&machine_rtc_type) },
#endif
{ MP_ROM_QSTR(MP_QSTR_idle), MP_ROM_PTR(&machine_idle_obj) },
{ MP_ROM_QSTR(MP_QSTR_disable_irq), MP_ROM_PTR(&machine_disable_irq_obj) },
{ MP_ROM_QSTR(MP_QSTR_enable_irq), MP_ROM_PTR(&machine_enable_irq_obj) },
{ MP_ROM_QSTR(MP_QSTR_reset_cause), MP_ROM_PTR(&machine_reset_cause_obj) },
#if MICROPY_PY_MACHINE_PULSE
{ MP_ROM_QSTR(MP_QSTR_time_pulse_us), MP_ROM_PTR(&machine_time_pulse_us_obj) },
#endif
{ MP_ROM_QSTR(MP_QSTR_lightsleep), MP_ROM_PTR(&machine_lightsleep_obj) },
{ MP_ROM_QSTR(MP_QSTR_deepsleep), MP_ROM_PTR(&machine_lightsleep_obj) },
{ MP_ROM_QSTR(MP_QSTR_bitstream), MP_ROM_PTR(&machine_bitstream_obj) },
#if MICROPY_PY_MACHINE_DHT_READINTO
{ MP_ROM_QSTR(MP_QSTR_dht_readinto), MP_ROM_PTR(&dht_readinto_obj) },
#endif
// Class constants.
// Use numerical constants instead of the symbolic names,
// since the names differ between SAMD21 and SAMD51.
{ MP_ROM_QSTR(MP_QSTR_PWRON_RESET), MP_ROM_INT(0x01) },
{ MP_ROM_QSTR(MP_QSTR_HARD_RESET), MP_ROM_INT(0x10) },
{ MP_ROM_QSTR(MP_QSTR_WDT_RESET), MP_ROM_INT(0x20) },
{ MP_ROM_QSTR(MP_QSTR_SOFT_RESET), MP_ROM_INT(0x40) },
{ MP_ROM_QSTR(MP_QSTR_DEEPSLEEP_RESET), MP_ROM_INT(0x80) },
};
STATIC MP_DEFINE_CONST_DICT(machine_module_globals, machine_module_globals_table);
const mp_obj_module_t mp_module_machine = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t *)&machine_module_globals,
};
MP_REGISTER_EXTENSIBLE_MODULE(MP_QSTR_machine, mp_module_machine);
#endif // MICROPY_PY_MACHINE