26229efe78
are shared well between threads and underlying MicroPython (SPI Flash for example.) It is recommended to use the bus device classes to manage the locks and other transaction state. https://github.com/adafruit/Adafruit_MicroPython_BusDevice Fixed #58 Fixed #59 Fixed #60
111 lines
5.4 KiB
C
111 lines
5.4 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) 2016 Scott Shawcroft for Adafruit Industries
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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 "common-hal/microcontroller/types.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "eagle_soc.h"
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#include "ets_alt_task.h"
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#include "etshal.h"
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#include "osapi.h"
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#include "xtirq.h"
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#define ETS_LOOP_ITER_BIT (12)
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void common_hal_mcu_delay_us(uint32_t delay) {
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os_delay_us(delay);
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}
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static uint16_t saved_interrupt_state;
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void common_hal_mcu_disable_interrupts() {
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saved_interrupt_state = disable_irq();
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saved_interrupt_state = (saved_interrupt_state & ~(1 << ETS_LOOP_ITER_BIT)) | (ets_loop_iter_disable << ETS_LOOP_ITER_BIT);
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ets_loop_iter_disable = 1;
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}
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void common_hal_mcu_enable_interrupts() {
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ets_loop_iter_disable = (saved_interrupt_state >> ETS_LOOP_ITER_BIT) & 1;
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enable_irq(saved_interrupt_state & ~(1 << ETS_LOOP_ITER_BIT));
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}
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// This macro is used to simplify pin definition in boards/<board>/pins.c
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#define PIN(p_name, p_gpio_number, p_gpio_function, p_peripheral) \
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const mcu_pin_obj_t pin_## p_name = { \
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{ &mcu_pin_type }, \
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.name = MP_QSTR_ ## p_name, \
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.gpio_number = p_gpio_number, \
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.gpio_function = p_gpio_function, \
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.peripheral = p_peripheral, \
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}
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#define NO_GPIO 0xff
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#define SPECIAL_CASE 0xfe
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// Using microcontroller names from the datasheet.
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// https://cdn-shop.adafruit.com/datasheets/ESP8266_Specifications_English.pdf
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// PIN(mcu name) // function notes | module name | huzzah name
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PIN(TOUT, NO_GPIO, NO_GPIO, NO_GPIO); // adc | ADC | ADC
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PIN(XPD_DCDC, 16, SPECIAL_CASE, SPECIAL_CASE); // gpio16 | GPIO16 | GPIO16
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PIN(MTMS, 14, FUNC_GPIO14, PERIPHS_IO_MUX_MTMS_U); // gpio14 / hspi_clk / pwm2 | GPIO14 | GPIO14/SCK
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PIN(MTDI, 12, FUNC_GPIO12, PERIPHS_IO_MUX_MTDI_U); // gpio12 / hspi_miso / pwm0 | GPIO12 | GPIO12/MISO
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PIN(MTCK, 13, FUNC_GPIO13, PERIPHS_IO_MUX_MTCK_U); // gpio13 / hspi_mosi / U0cts | GPIO13 | GPIO13/MOSI
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PIN(MTDO, 15, FUNC_GPIO15, PERIPHS_IO_MUX_MTDO_U); // gpio15 / hspi_cs / u0rts / pwm1 | GPIO15 | GPIO15
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PIN(GPIO2, 2, FUNC_GPIO2, PERIPHS_IO_MUX_GPIO2_U); // U1txd | GPIO2 | GPIO2
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PIN(GPIO0, 0, FUNC_GPIO0, PERIPHS_IO_MUX_GPIO0_U); // spi_Cs2 | GPIO0 | GPIO0
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PIN(GPIO4, 4, FUNC_GPIO4, PERIPHS_IO_MUX_GPIO4_U); // pwm3 on mcu datasheet as vdd which must be wrong | GPIO4 | GPIO4/SDA
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PIN(SD_DATA_2, 9, FUNC_GPIO9, PERIPHS_IO_MUX_SD_DATA2_U); // spihd / hspihd / gpio9 | GPIO9
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PIN(SD_DATA_3, 10, FUNC_GPIO10, PERIPHS_IO_MUX_SD_DATA3_U); // spiwp / hspiwp / gpio10 | GPIO10
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PIN(SD_CMD, NO_GPIO, NO_GPIO, PERIPHS_IO_MUX_SD_CMD_U); // spi_cs0 / gpio11 | CS0
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PIN(SD_CLK, NO_GPIO, NO_GPIO, PERIPHS_IO_MUX_SD_CLK_U); // spi_clk / gpio6 | SCLK
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PIN(SD_DATA_0, NO_GPIO, NO_GPIO, PERIPHS_IO_MUX_SD_DATA0_U); // spi_miso / gpio7 | MISO
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PIN(SD_DATA_1, NO_GPIO, NO_GPIO, PERIPHS_IO_MUX_SD_DATA1_U); // spi_mosi / gpio8 / u1rxd | MOSI
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PIN(DVDD, 5, FUNC_GPIO5, PERIPHS_IO_MUX_GPIO5_U); // gpio5 | GPIO5 | GPIO5/SCL
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PIN(U0RXD, 3, FUNC_GPIO3, PERIPHS_IO_MUX_U0RXD_U); // gpio3 | RXD0 | RXD
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PIN(U0TXD, 1, FUNC_GPIO1, PERIPHS_IO_MUX_U0TXD_U); // gpio1 / spi_cs1 | TXD0 | TXD
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// This maps MCU pin names to pin objects.
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STATIC const mp_map_elem_t mcu_pin_global_dict_table[] = {
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{ MP_OBJ_NEW_QSTR(MP_QSTR_TOUT), (mp_obj_t)&pin_TOUT },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_XPD_DCDC), (mp_obj_t)&pin_XPD_DCDC },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_MTMS), (mp_obj_t)&pin_MTMS },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_MTDI), (mp_obj_t)&pin_MTDI },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_MTCK), (mp_obj_t)&pin_MTCK },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_MTDO), (mp_obj_t)&pin_MTDO },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_GPIO2), (mp_obj_t)&pin_GPIO2 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_GPIO0), (mp_obj_t)&pin_GPIO0 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_GPIO4), (mp_obj_t)&pin_GPIO4 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_DATA_2), (mp_obj_t)&pin_SD_DATA_2 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_DATA_3), (mp_obj_t)&pin_SD_DATA_3 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_CMD), (mp_obj_t)&pin_SD_CMD },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_CLK), (mp_obj_t)&pin_SD_CLK },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_DATA_0), (mp_obj_t)&pin_SD_DATA_0 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_SD_DATA_1), (mp_obj_t)&pin_SD_DATA_1 },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_DVDD), (mp_obj_t)&pin_DVDD },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_U0RXD), (mp_obj_t)&pin_U0RXD },
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{ MP_OBJ_NEW_QSTR(MP_QSTR_U0TXD), (mp_obj_t)&pin_U0TXD },
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};
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MP_DEFINE_CONST_DICT(mcu_pin_globals, mcu_pin_global_dict_table);
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