130 lines
4.3 KiB
C
130 lines
4.3 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) 2018 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 "shared-bindings/busio/I2C.h"
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#include "shared-bindings/busio/SPI.h"
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#include "shared-bindings/busio/UART.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "supervisor/shared/translate.h"
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#include "mpconfigboard.h"
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#include "samd/pins.h"
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#include "py/runtime.h"
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#define BOARD_I2C (defined(DEFAULT_I2C_BUS_SDA) && defined(DEFAULT_I2C_BUS_SCL))
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#define BOARD_SPI (defined(DEFAULT_SPI_BUS_SCK) && defined(DEFAULT_SPI_BUS_MISO) && defined(DEFAULT_SPI_BUS_MOSI))
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#define BOARD_UART (defined(DEFAULT_UART_BUS_RX) && defined(DEFAULT_UART_BUS_TX))
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#if BOARD_I2C
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STATIC mp_obj_t i2c_singleton = NULL;
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STATIC mp_obj_t board_i2c(void) {
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if (i2c_singleton == NULL) {
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busio_i2c_obj_t *self = m_new_obj(busio_i2c_obj_t);
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self->base.type = &busio_i2c_type;
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assert_pin_free(DEFAULT_I2C_BUS_SDA);
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assert_pin_free(DEFAULT_I2C_BUS_SCL);
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common_hal_busio_i2c_construct(self, DEFAULT_I2C_BUS_SCL, DEFAULT_I2C_BUS_SDA, 400000, 0);
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i2c_singleton = (mp_obj_t)self;
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}
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return i2c_singleton;
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}
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#else
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STATIC mp_obj_t board_i2c(void) {
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mp_raise_NotImplementedError(translate("No default I2C bus"));
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return NULL;
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}
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#endif
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MP_DEFINE_CONST_FUN_OBJ_0(board_i2c_obj, board_i2c);
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#if BOARD_SPI
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STATIC mp_obj_t spi_singleton = NULL;
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STATIC mp_obj_t board_spi(void) {
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if (spi_singleton == NULL) {
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busio_spi_obj_t *self = m_new_obj(busio_spi_obj_t);
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self->base.type = &busio_spi_type;
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assert_pin_free(DEFAULT_SPI_BUS_SCK);
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assert_pin_free(DEFAULT_SPI_BUS_MOSI);
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assert_pin_free(DEFAULT_SPI_BUS_MISO);
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const mcu_pin_obj_t* clock = MP_OBJ_TO_PTR(DEFAULT_SPI_BUS_SCK);
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const mcu_pin_obj_t* mosi = MP_OBJ_TO_PTR(DEFAULT_SPI_BUS_MOSI);
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const mcu_pin_obj_t* miso = MP_OBJ_TO_PTR(DEFAULT_SPI_BUS_MISO);
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common_hal_busio_spi_construct(self, clock, mosi, miso);
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spi_singleton = (mp_obj_t)self;
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}
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return spi_singleton;
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}
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#else
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STATIC mp_obj_t board_spi(void) {
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mp_raise_NotImplementedError(translate("No default SPI bus"));
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return NULL;
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}
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#endif
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MP_DEFINE_CONST_FUN_OBJ_0(board_spi_obj, board_spi);
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#if BOARD_UART
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STATIC mp_obj_t uart_singleton = NULL;
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STATIC mp_obj_t board_uart(void) {
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if (uart_singleton == NULL) {
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busio_uart_obj_t *self = m_new_obj(busio_uart_obj_t);
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self->base.type = &busio_uart_type;
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assert_pin_free(DEFAULT_UART_BUS_RX);
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assert_pin_free(DEFAULT_UART_BUS_TX);
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const mcu_pin_obj_t* rx = MP_OBJ_TO_PTR(DEFAULT_UART_BUS_RX);
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const mcu_pin_obj_t* tx = MP_OBJ_TO_PTR(DEFAULT_UART_BUS_TX);
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common_hal_busio_uart_construct(self, tx, rx, 9600, 8, PARITY_NONE, 1, 1000, 64);
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uart_singleton = (mp_obj_t)self;
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}
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return uart_singleton;
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}
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#else
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STATIC mp_obj_t board_uart(void) {
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mp_raise_NotImplementedError(translate("No default UART bus"));
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return NULL;
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}
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#endif
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MP_DEFINE_CONST_FUN_OBJ_0(board_uart_obj, board_uart);
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void reset_board_busses(void) {
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#if BOARD_I2C
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i2c_singleton = NULL;
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#endif
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#if BOARD_SPI
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spi_singleton = NULL;
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#endif
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#if BOARD_UART
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uart_singleton = NULL;
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#endif
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}
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