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micropython/ports/mimxrt/mphalport.c
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/* | |
* This file is part of the MicroPython project, http://micropython.org/ | |
* | |
* The MIT License (MIT) | |
* | |
* Copyright (c) 2019 Damien P. George | |
* Copyright (c) 2020 Jim Mussared | |
* | |
* 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 "py/stream.h" | |
#include "py/mphal.h" | |
#include "shared/timeutils/timeutils.h" | |
#include "shared/runtime/interrupt_char.h" | |
#include "shared/tinyusb/mp_usbd_cdc.h" | |
#include "extmod/misc.h" | |
#include "ticks.h" | |
#include "tusb.h" | |
#include "fsl_snvs_lp.h" | |
#ifndef MICROPY_HW_STDIN_BUFFER_LEN | |
#define MICROPY_HW_STDIN_BUFFER_LEN 512 | |
#endif | |
#include CPU_HEADER_H | |
static uint8_t stdin_ringbuf_array[MICROPY_HW_STDIN_BUFFER_LEN]; | |
ringbuf_t stdin_ringbuf = {stdin_ringbuf_array, sizeof(stdin_ringbuf_array), 0, 0}; | |
uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) { | |
uintptr_t ret = 0; | |
ret |= mp_usbd_cdc_poll_interfaces(poll_flags); | |
#if MICROPY_PY_OS_DUPTERM | |
ret |= mp_os_dupterm_poll(poll_flags); | |
#endif | |
return ret; | |
} | |
int mp_hal_stdin_rx_chr(void) { | |
for (;;) { | |
mp_usbd_cdc_poll_interfaces(0); | |
int c = ringbuf_get(&stdin_ringbuf); | |
if (c != -1) { | |
return c; | |
} | |
#if MICROPY_PY_OS_DUPTERM | |
int dupterm_c = mp_os_dupterm_rx_chr(); | |
if (dupterm_c >= 0) { | |
return dupterm_c; | |
} | |
#endif | |
MICROPY_EVENT_POLL_HOOK | |
} | |
} | |
mp_uint_t mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) { | |
mp_uint_t ret = len; | |
bool did_write = false; | |
mp_uint_t cdc_res = mp_usbd_cdc_tx_strn(str, len); | |
if (cdc_res > 0) { | |
did_write = true; | |
ret = MIN(cdc_res, ret); | |
} | |
#if MICROPY_PY_OS_DUPTERM | |
int dupterm_res = mp_os_dupterm_tx_strn(str, len); | |
if (dupterm_res >= 0) { | |
did_write = true; | |
ret = MIN((mp_uint_t)dupterm_res, ret); | |
} | |
#endif | |
return did_write ? ret : 0; | |
} | |
uint64_t mp_hal_time_ns(void) { | |
snvs_lp_srtc_datetime_t t; | |
SNVS_LP_SRTC_GetDatetime(SNVS, &t); | |
uint64_t s = timeutils_seconds_since_epoch(t.year, t.month, t.day, t.hour, t.minute, t.second); | |
return s * 1000000000ULL; | |
} | |
/*******************************************************************************/ | |
// MAC address | |
void mp_hal_get_unique_id(uint8_t id[]) { | |
#if defined CPU_MIMXRT1176_cm7 | |
*(uint32_t *)id = OCOTP->FUSEN[0x10].FUSE; | |
*(uint32_t *)(id + 4) = OCOTP->FUSEN[0x11].FUSE; | |
#else | |
*(uint32_t *)id = OCOTP->CFG0; | |
*(uint32_t *)(id + 4) = OCOTP->CFG1; | |
#endif | |
} | |
// Generate a random locally administered MAC address (LAA) | |
void mp_hal_generate_laa_mac(int idx, uint8_t buf[6]) { | |
// Take the MAC addr from the OTP's Configuration and Manufacturing Info | |
unsigned char id[8]; | |
mp_hal_get_unique_id(id); | |
uint32_t *pt1 = (uint32_t *)id; | |
uint32_t *pt2 = (uint32_t *)(id + 4); | |
buf[0] = 0x02; // Locally Administered MAC | |
*(uint32_t *)&buf[1] = *pt1 ^ (*pt1 >> 8); | |
*(uint16_t *)&buf[4] = (uint16_t)(*pt2 ^ *pt2 >> 16); | |
buf[5] ^= (uint8_t)idx; | |
} | |
// A board can override this if needed | |
MP_WEAK void mp_hal_get_mac(int idx, uint8_t buf[6]) { | |
mp_hal_generate_laa_mac(idx, buf); | |
} | |
void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest) { | |
static const char hexchr[16] = "0123456789ABCDEF"; | |
uint8_t mac[6]; | |
mp_hal_get_mac(idx, mac); | |
for (; chr_len; ++chr_off, --chr_len) { | |
*dest++ = hexchr[mac[chr_off >> 1] >> (4 * (1 - (chr_off & 1))) & 0xf]; | |
} | |
} |