mirror of
https://github.com/micropython/micropython.git
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140 lines
4.4 KiB
C
140 lines
4.4 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) 2019 Damien P. George
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* Copyright (c) 2020 Jim Mussared
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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 "py/runtime.h"
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#include "py/stream.h"
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#include "py/mphal.h"
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#include "shared/timeutils/timeutils.h"
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#include "shared/runtime/interrupt_char.h"
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#include "shared/tinyusb/mp_usbd_cdc.h"
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#include "extmod/misc.h"
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#include "ticks.h"
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#include "tusb.h"
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#include "fsl_snvs_lp.h"
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#ifndef MICROPY_HW_STDIN_BUFFER_LEN
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#define MICROPY_HW_STDIN_BUFFER_LEN 512
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#endif
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#include CPU_HEADER_H
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static uint8_t stdin_ringbuf_array[MICROPY_HW_STDIN_BUFFER_LEN];
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ringbuf_t stdin_ringbuf = {stdin_ringbuf_array, sizeof(stdin_ringbuf_array), 0, 0};
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uintptr_t mp_hal_stdio_poll(uintptr_t poll_flags) {
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uintptr_t ret = 0;
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ret |= mp_usbd_cdc_poll_interfaces(poll_flags);
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#if MICROPY_PY_OS_DUPTERM
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ret |= mp_os_dupterm_poll(poll_flags);
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#endif
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return ret;
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}
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int mp_hal_stdin_rx_chr(void) {
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for (;;) {
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mp_usbd_cdc_poll_interfaces(0);
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int c = ringbuf_get(&stdin_ringbuf);
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if (c != -1) {
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return c;
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}
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#if MICROPY_PY_OS_DUPTERM
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int dupterm_c = mp_os_dupterm_rx_chr();
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if (dupterm_c >= 0) {
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return dupterm_c;
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}
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#endif
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MICROPY_EVENT_POLL_HOOK
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}
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}
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mp_uint_t mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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mp_uint_t ret = len;
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bool did_write = false;
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mp_uint_t cdc_res = mp_usbd_cdc_tx_strn(str, len);
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if (cdc_res > 0) {
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did_write = true;
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ret = MIN(cdc_res, ret);
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}
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#if MICROPY_PY_OS_DUPTERM
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int dupterm_res = mp_os_dupterm_tx_strn(str, len);
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if (dupterm_res >= 0) {
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did_write = true;
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ret = MIN((mp_uint_t)dupterm_res, ret);
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}
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#endif
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return did_write ? ret : 0;
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}
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uint64_t mp_hal_time_ns(void) {
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snvs_lp_srtc_datetime_t t;
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SNVS_LP_SRTC_GetDatetime(SNVS, &t);
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uint64_t s = timeutils_seconds_since_epoch(t.year, t.month, t.day, t.hour, t.minute, t.second);
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return s * 1000000000ULL;
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}
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/*******************************************************************************/
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// MAC address
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void mp_hal_get_unique_id(uint8_t id[]) {
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#if defined CPU_MIMXRT1176_cm7
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*(uint32_t *)id = OCOTP->FUSEN[0x10].FUSE;
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*(uint32_t *)(id + 4) = OCOTP->FUSEN[0x11].FUSE;
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#else
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*(uint32_t *)id = OCOTP->CFG0;
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*(uint32_t *)(id + 4) = OCOTP->CFG1;
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#endif
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}
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// Generate a random locally administered MAC address (LAA)
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void mp_hal_generate_laa_mac(int idx, uint8_t buf[6]) {
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// Take the MAC addr from the OTP's Configuration and Manufacturing Info
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unsigned char id[8];
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mp_hal_get_unique_id(id);
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uint32_t *pt1 = (uint32_t *)id;
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uint32_t *pt2 = (uint32_t *)(id + 4);
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buf[0] = 0x02; // Locally Administered MAC
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*(uint32_t *)&buf[1] = *pt1 ^ (*pt1 >> 8);
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*(uint16_t *)&buf[4] = (uint16_t)(*pt2 ^ *pt2 >> 16);
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buf[5] ^= (uint8_t)idx;
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}
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// A board can override this if needed
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MP_WEAK void mp_hal_get_mac(int idx, uint8_t buf[6]) {
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mp_hal_generate_laa_mac(idx, buf);
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}
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void mp_hal_get_mac_ascii(int idx, size_t chr_off, size_t chr_len, char *dest) {
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static const char hexchr[16] = "0123456789ABCDEF";
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uint8_t mac[6];
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mp_hal_get_mac(idx, mac);
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for (; chr_len; ++chr_off, --chr_len) {
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*dest++ = hexchr[mac[chr_off >> 1] >> (4 * (1 - (chr_off & 1))) & 0xf];
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}
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}
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