swm050: new MCU family
SWM050 is a series of MCU made by Foshan Synwit Tech. It contains a Cortex-M0 CPU core, 8KiB of Flash and 1KiB of SRAM. The only peripherals are GPIO, Timer and WDT. There's only two parts in this series, with either TSSOP-8 or SSOP-16 packages. This commit introduces the interrupt vector and GPIO support for them. Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
This commit is contained in:
Icenowy Zheng
committed by
Karl Palsson
Karl Palsson
parent
a652856533
commit
54eff24e7c
@@ -71,6 +71,9 @@
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#elif defined(MSP432E4)
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# include "../msp432/e4/vector_nvic.c"
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#elif defined(SWM050)
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# include "../swm050/vector_nvic.c"
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#else
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# warning "no interrupts defined for chipset;"\
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"not allocating space in the vector table"
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41
lib/swm050/Makefile
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41
lib/swm050/Makefile
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@@ -0,0 +1,41 @@
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##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io>
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##
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## This library is free software: you can redistribute it and/or modify
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## it under the terms of the GNU Lesser General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU Lesser General Public License for more details.
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##
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## You should have received a copy of the GNU Lesser General Public License
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## along with this library. If not, see <http://www.gnu.org/licenses/>.
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##
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LIBNAME = libopencm3_swm050
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SRCLIBDIR ?= ..
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PREFIX ?= arm-none-eabi
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CC = $(PREFIX)-gcc
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AR = $(PREFIX)-ar
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TGT_CFLAGS = -Os \
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-Wall -Wextra -Wimplicit-function-declaration \
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-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
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-Wundef -Wshadow \
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-I../../include -fno-common \
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-mcpu=cortex-m0 $(FP_FLAGS) -mthumb -Wstrict-prototypes \
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-ffunction-sections -fdata-sections -MD -DSWM050
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TGT_CFLAGS += $(DEBUG_FLAGS)
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TGT_CFLAGS += $(STANDARD_FLAGS)
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ARFLAGS = rcs
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OBJS = gpio.o
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VPATH += ../cm3
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include ../Makefile.include
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190
lib/swm050/gpio.c
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190
lib/swm050/gpio.c
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@@ -0,0 +1,190 @@
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/swm050/gpio.h>
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/*---------------------------------------------------------------------------*/
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/** @brief Set a Group of Pins
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Set one or more pins of GPIO to 1. Please note that this chip doesn't support
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atomic pin setting.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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*/
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void gpio_set(uint16_t gpios)
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{
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GPIO_DATA |= gpios;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Clear a Group of Pins
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Set one or more pins of GPIO to 0. Please note that this chip doesn't support
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atomic pin setting.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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*/
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void gpio_clear(uint16_t gpios)
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{
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GPIO_DATA &= ~gpios;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Read a Group of Pins.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be read, use bitwise OR '|' to separate
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them.
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@return Unsigned int16 value of the pin values. The bit position of the pin
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value returned corresponds to the pin number.
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*/
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uint16_t gpio_get(uint16_t gpios)
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{
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return GPIO_EXT & gpios;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Toggle a Group of Pins
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Toggle one or more pins of GPIO. The non-toggled pins are not affected.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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*/
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void gpio_toggle(uint16_t gpios)
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{
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uint32_t curr_status = GPIO_DATA & gpios;
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GPIO_DATA = (GPIO_DATA & (~gpios)) | (~curr_status);
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Set the direction of a Group of Pins to Input
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Set the direction of one or more pins of GPIO to input.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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*/
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void gpio_input(uint16_t gpios)
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{
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GPIO_DIR &= ~gpios;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Set the direction of a Group of Pins to Output
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Set the direction of one or more pins of GPIO to output.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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*/
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void gpio_output(uint16_t gpios)
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{
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GPIO_DIR |= gpios;
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Select the alternative function of a Group of Pins
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Select the alternative function of one or more pins of GPIO.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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@param[in] af_en Bool. Whether alternative function is selected
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*/
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void gpio_sel_af(uint16_t gpios, bool af_en)
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{
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if (gpios & GPIO0) {
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GPIO_SEL = (GPIO_SEL & (~0x3)) | (af_en ? 0x1 : 0x0);
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}
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if (gpios & GPIO1) {
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GPIO_SEL = (GPIO_SEL & (~0xc)) | (af_en ? 0x4 : 0x0);
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}
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if (gpios & GPIO2) {
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GPIO_SEL = (GPIO_SEL & (~0x30)) | (af_en ? 0x10 : 0x0);
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}
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if (gpios & GPIO7) {
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GPIO_SEL = (GPIO_SEL & (~0xc000)) | (af_en ? 0x4000 : 0x0);
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Enable the internal pull-up of a Group of Pins
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Enable or disable the internal pull-up of one or more pins of GPIO.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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@param[in] en Bool. Whether pull-up is enabled
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*/
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void gpio_pullup(uint16_t gpios, bool en)
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{
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if (en) {
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GPIO_PULLUP |= gpios;
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} else {
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GPIO_PULLUP &= ~gpios;
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Enable the input function of a Group of Pins
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Enable or disable the input function of one or more pins of GPIO. Disabling
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the input function of pins can decrease the power usage of the MCU.
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@param[in] gpios Unsigned int16. Pin identifiers @ref gpio_pin_id
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If multiple pins are to be changed, use bitwise OR '|' to separate
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them.
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@param[in] en Bool. Whether input function is enabled
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*/
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void gpio_in_en(uint16_t gpios, bool en)
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{
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if (en) {
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GPIO_INEN &= ~gpios;
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} else {
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GPIO_INEN |= gpios;
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}
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}
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/*---------------------------------------------------------------------------*/
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/** @brief Select the SWD function of GPIO 1/2
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Enable or disable the SWD debugging port at GPIO 1/2. When SWD debugging port
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is enabled, GPIO and AF of the SWD pins will be both unavailable.
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@param[in] en Bool. Whether SWD is enabled
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*/
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void gpio_sel_swd(bool en)
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{
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if (en) {
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SWD_SEL = 1;
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} else {
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SWD_SEL = 0;
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}
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}
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