9d91111b1b
This started while adding USB MIDI support (and descriptor support is in this change.) When seeing that I'd have to implement the MIDI class logic twice, once for atmel-samd and once for nrf, I decided to refactor the USB stack so its shared across ports. This has led to a number of changes that remove items from the ports folder and move them into supervisor. Furthermore, we had external SPI flash support for nrf pending so I factored out the connection between the usb stack and the flash API as well. This PR also includes the QSPI support for nRF.
94 lines
3.2 KiB
C
94 lines
3.2 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) 2016 Scott Shawcroft
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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 <string.h>
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#include "lib/mp-readline/readline.h"
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#include "lib/utils/interrupt_char.h"
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#include "py/mphal.h"
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#include "py/mpstate.h"
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#include "py/runtime.h"
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#include "py/smallint.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "shared-bindings/time/__init__.h"
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#include "supervisor/shared/autoreload.h"
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#include "hal/include/hal_atomic.h"
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#include "hal/include/hal_delay.h"
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#include "hal/include/hal_gpio.h"
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#include "hal/include/hal_sleep.h"
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#include "sam.h"
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#include "mpconfigboard.h"
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#include "mphalport.h"
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#include "reset.h"
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#include "tick.h"
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extern uint32_t common_hal_mcu_processor_get_frequency(void);
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void mp_hal_delay_ms(mp_uint_t delay) {
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uint64_t start_tick = ticks_ms;
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uint64_t duration = 0;
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while (duration < delay) {
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#ifdef MICROPY_VM_HOOK_LOOP
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MICROPY_VM_HOOK_LOOP
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#endif
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// Check to see if we've been CTRL-Ced by autoreload or the user.
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if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception))) {
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break;
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}
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duration = (ticks_ms - start_tick);
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// TODO(tannewt): Go to sleep for a little while while we wait.
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}
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}
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// Use mp_hal_delay_us() for timing of less than 1ms.
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// Do a simple timing loop to wait for a certain number of microseconds.
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// Can be used when interrupts are disabled, which makes tick_delay() unreliable.
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//
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// Testing done at 48 MHz on SAMD21 and 120 MHz on SAMD51, multiplication and division cancel out.
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// But get the frequency just in case.
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#ifdef SAMD21
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#define DELAY_LOOP_ITERATIONS_PER_US ( (10U*48000000U) / common_hal_mcu_processor_get_frequency())
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#endif
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#ifdef SAMD51
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#define DELAY_LOOP_ITERATIONS_PER_US ( (30U*120000000U) / common_hal_mcu_processor_get_frequency())
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#endif
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void mp_hal_delay_us(mp_uint_t delay) {
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for (uint32_t i = delay*DELAY_LOOP_ITERATIONS_PER_US; i > 0; i--) {
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asm volatile("nop");
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}
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}
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void mp_hal_disable_all_interrupts(void) {
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common_hal_mcu_disable_interrupts();
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}
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void mp_hal_enable_all_interrupts(void) {
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common_hal_mcu_enable_interrupts();
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}
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