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added matrix keyboard support

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eddyem 2015-07-24 12:16:05 +03:00
parent 8ef021cc35
commit fa5324d30d
18 changed files with 1087 additions and 0 deletions
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133
matrix_keyboard/Makefile Normal file
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BINARY = matrkeyb
BOOTPORT ?= /dev/ttyUSB0
BOOTSPEED ?= 115200
# change this linking script depending on particular MCU model,
# for example, if you have STM32F103VBT6, you should write:
LDSCRIPT = ld/stm32f103xB.ld
LIBNAME = opencm3_stm32f1
DEFS = -DSTM32F1 -DKBD_3BY4 -DEBUG
OBJDIR = mk
INDEPENDENT_HEADERS=
FP_FLAGS ?= -msoft-float
ARCH_FLAGS = -mthumb -mcpu=cortex-m3 $(FP_FLAGS) -mfix-cortex-m3-ldrd
###############################################################################
# Executables
PREFIX ?= arm-none-eabi
RM := rm -f
RMDIR := rmdir
CC := $(PREFIX)-gcc
LD := $(PREFIX)-gcc
AR := $(PREFIX)-ar
AS := $(PREFIX)-as
OBJCOPY := $(PREFIX)-objcopy
OBJDUMP := $(PREFIX)-objdump
GDB := $(PREFIX)-gdb
STFLASH = $(shell which st-flash)
STBOOT = $(shell which stm32flash)
###############################################################################
# Source files
LDSCRIPT ?= $(BINARY).ld
SRC = $(wildcard *.c)
OBJS = $(addprefix $(OBJDIR)/, $(SRC:%.c=%.o))
ifeq ($(strip $(OPENCM3_DIR)),)
OPENCM3_DIR := /usr/local/arm-none-eabi
$(info Using $(OPENCM3_DIR) path to library)
endif
INCLUDE_DIR = $(OPENCM3_DIR)/include
LIB_DIR = $(OPENCM3_DIR)/lib
SCRIPT_DIR = $(OPENCM3_DIR)/scripts
###############################################################################
# C flags
CFLAGS += -Os -g
CFLAGS += -Wall -Wextra -Wshadow -Wimplicit-function-declaration
CFLAGS += -Wredundant-decls
# -Wmissing-prototypes -Wstrict-prototypes
CFLAGS += -fno-common -ffunction-sections -fdata-sections
###############################################################################
# C & C++ preprocessor common flags
CPPFLAGS += -MD
CPPFLAGS += -Wall -Werror
CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
###############################################################################
# Linker flags
LDFLAGS += --static -nostartfiles
LDFLAGS += -L$(LIB_DIR)
LDFLAGS += -T$(LDSCRIPT)
LDFLAGS += -Wl,-Map=$(*).map
LDFLAGS += -Wl,--gc-sections
###############################################################################
# Used libraries
LDLIBS += -l$(LIBNAME)
LDLIBS += -Wl,--start-group -lc -lgcc -Wl,--end-group
.SUFFIXES: .elf .bin .hex .srec .list .map .images
.SECONDEXPANSION:
.SECONDARY:
ELF := $(OBJDIR)/$(BINARY).elf
LIST := $(OBJDIR)/$(BINARY).list
BIN := $(BINARY).bin
HEX := $(BINARY).hex
all: bin
elf: $(ELF)
bin: $(BIN)
hex: $(HEX)
list: $(LIST)
$(OBJDIR):
mkdir $(OBJDIR)
$(OBJDIR)/%.o: %.c
@printf " CC $<\n"
$(CC) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $@ -c $<
$(SRC) : %.c : %.h $(INDEPENDENT_HEADERS)
@touch $@
%.h: ;
$(BIN): $(ELF)
@printf " OBJCOPY $(BIN)\n"
$(OBJCOPY) -Obinary $(ELF) $(BIN)
$(HEX): $(ELF)
@printf " OBJCOPY $(HEX)\n"
$(OBJCOPY) -Oihex $(ELF) $(HEX)
$(LIST): $(ELF)
@printf " OBJDUMP $(LIST)\n"
$(OBJDUMP) -S $(ELF) > $(LIST)
$(ELF): $(OBJDIR) $(OBJS) $(LDSCRIPT) $(LIB_DIR)/lib$(LIBNAME).a
@printf " LD $(ELF)\n"
$(LD) $(LDFLAGS) $(ARCH_FLAGS) $(OBJS) $(LDLIBS) -o $(ELF)
clean:
@printf " CLEAN\n"
$(RM) $(OBJS) $(OBJDIR)/*.d $(ELF) $(HEX) $(LIST) $(OBJDIR)/*.map
$(RMDIR) $(OBJDIR)
flash: $(BIN)
@printf " FLASH $(BIN)\n"
$(STFLASH) write $(BIN) 0x8000000
boot: $(BIN)
@printf " LOAD $(BIN) through bootloader\n"
$(STBOOT) -b$(BOOTSPEED) $(BOOTPORT) -w $(BIN)
.PHONY: clean elf hex list flash boot
#-include $(OBJS:.o=.d)

6
matrix_keyboard/Readme.md Normal file
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### USB HID keyboard
This is an emulator allowing to connect simple matrix
keyboard 3x3 or 4x4 to computer as regular USB keyboard
To choose type of keyboard define KBD_3BY4 or KBD_4BY4 in Makefile

74
matrix_keyboard/keycodes.c Normal file
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/*
* keycodes.c
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "keycodes.h"
/*
* Keyboard buffer:
* buf[0]: MOD
* buf[1]: reserved
* buf[2]..buf[7] - keycodes 1..6
*/
static uint8_t buf[8] = {0,0,0,0,0,0,0,0};
#define _(x) (x|0x80)
// array for keycodes according to ASCII table; MSB is MOD_SHIFT flag
static const uint8_t keycodes[] = {
// space !"#$%&'
KEY_SPACE, _(KEY_1), _(KEY_QUOTE), _(KEY_3), _(KEY_4), _(KEY_5), _(KEY_7), KEY_QUOTE,
// ()*+,-./
_(KEY_9), _(KEY_0), _(KEY_8), _(KEY_EQUAL), KEY_COMMA, KEY_MINUS, KEY_PERIOD, KEY_SLASH,
// 0..9
39, 30, 31, 32, 33, 34, 35, 36, 37, 38,
// :;<=>?@
_(KEY_SEMICOLON), KEY_SEMICOLON, _(KEY_COMMA), KEY_EQUAL, _(KEY_PERIOD), _(KEY_SLASH), _(KEY_2),
// A..Z: for a in $(seq 0 25); do printf "$((a+132)),"; done
132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,
// [\]^_`
KEY_LEFT_BRACE, KEY_BACKSLASH, KEY_RIGHT_BRACE, _(KEY_6), _(KEY_MINUS), KEY_TILDE,
// a..z: for a in $(seq 0 25); do printf "$((a+4)),"; done
4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,
// {|}~
_(KEY_LEFT_BRACE), _(KEY_BACKSLASH), _(KEY_RIGHT_BRACE), _(KEY_TILDE)
};
uint8_t *set_key_buf(uint8_t MOD, uint8_t KEY){
buf[0] = MOD;
buf[2] = KEY;
return buf;
}
/**
* return buffer for sending symbol "ltr" with addition modificator mod
*/
uint8_t *press_key_mod(char ltr, uint8_t mod){
uint8_t MOD = 0;
uint8_t KEY = 0;
if(ltr > 31){
KEY = keycodes[ltr - 32];
if(KEY & 0x80){
MOD = MOD_SHIFT;
KEY &= 0x7f;
}
}else if (ltr == '\n') KEY = KEY_ENTER;
buf[0] = MOD | mod;
buf[2] = KEY;
return buf;
}

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/*
* keycodes.h
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#pragma once
#ifndef __KEYKODES_H__
#define __KEYKODES_H__
#include <stdint.h>
uint8_t *set_key_buf(uint8_t MOD, uint8_t KEY);
#define release_key() set_key_buf(0,0)
uint8_t *press_key_mod(char key, uint8_t mod);
#define press_key(k) press_key_mod(k, 0)
#define MOD_CTRL 0x01
#define MOD_SHIFT 0x02
#define MOD_ALT 0x04
#define MOD_GUI 0x08
#define LEFT(mod) (mod)
#define RIGHT(mod) ((mod << 4))
#define KEY_A 4
#define KEY_B 5
#define KEY_C 6
#define KEY_D 7
#define KEY_E 8
#define KEY_F 9
#define KEY_G 10
#define KEY_H 11
#define KEY_I 12
#define KEY_J 13
#define KEY_K 14
#define KEY_L 15
#define KEY_M 16
#define KEY_N 17
#define KEY_O 18
#define KEY_P 19
#define KEY_Q 20
#define KEY_R 21
#define KEY_S 22
#define KEY_T 23
#define KEY_U 24
#define KEY_V 25
#define KEY_W 26
#define KEY_X 27
#define KEY_Y 28
#define KEY_Z 29
#define KEY_1 30
#define KEY_2 31
#define KEY_3 32
#define KEY_4 33
#define KEY_5 34
#define KEY_6 35
#define KEY_7 36
#define KEY_8 37
#define KEY_9 38
#define KEY_0 39
#define KEY_ENTER 40
#define KEY_ESC 41
#define KEY_BACKSPACE 42
#define KEY_TAB 43
#define KEY_SPACE 44
#define KEY_MINUS 45
#define KEY_EQUAL 46
#define KEY_LEFT_BRACE 47
#define KEY_RIGHT_BRACE 48
#define KEY_BACKSLASH 49
#define KEY_NUMBER 50
#define KEY_SEMICOLON 51
#define KEY_QUOTE 52
#define KEY_TILDE 53
#define KEY_COMMA 54
#define KEY_PERIOD 55
#define KEY_SLASH 56
#define KEY_CAPS_LOCK 57
#define KEY_F1 58
#define KEY_F2 59
#define KEY_F3 60
#define KEY_F4 61
#define KEY_F5 62
#define KEY_F6 63
#define KEY_F7 64
#define KEY_F8 65
#define KEY_F9 66
#define KEY_F10 67
#define KEY_F11 68
#define KEY_F12 69
#define KEY_PRINTSCREEN 70
#define KEY_SCROLL_LOCK 71
#define KEY_PAUSE 72
#define KEY_INSERT 73
#define KEY_HOME 74
#define KEY_PAGE_UP 75
#define KEY_DELETE 76
#define KEY_END 77
#define KEY_PAGE_DOWN 78
#define KEY_RIGHT 79
#define KEY_LEFT 80
#define KEY_DOWN 81
#define KEY_UP 82
#define KEY_NUM_LOCK 83
#define KEYPAD_SLASH 84
#define KEYPAD_ASTERIX 85
#define KEYPAD_MINUS 86
#define KEYPAD_PLUS 87
#define KEYPAD_ENTER 88
#define KEYPAD_1 89
#define KEYPAD_2 90
#define KEYPAD_3 91
#define KEYPAD_4 92
#define KEYPAD_5 93
#define KEYPAD_6 94
#define KEYPAD_7 95
#define KEYPAD_8 96
#define KEYPAD_9 97
#define KEYPAD_0 98
#define KEYPAD_PERIOD 99
#endif // __KEYKODES_H__

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stm32f103?4* stm32f1 ROM=16K RAM=6K
stm32f103?6* stm32f1 ROM=32K RAM=10K
stm32f103?8* stm32f1 ROM=64K RAM=20K
stm32f103?b* stm32f1 ROM=128K RAM=20K
stm32f103?c* stm32f1 ROM=256K RAM=48K
stm32f103?d* stm32f1 ROM=384K RAM=64K
stm32f103?e* stm32f1 ROM=512K RAM=64K
stm32f103?f* stm32f1 ROM=768K RAM=96K
stm32f103?g* stm32f1 ROM=1024K RAM=96K

31
matrix_keyboard/ld/stm32f103x4.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 16K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 6K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103x6.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 32K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 10K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

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matrix_keyboard/ld/stm32f103x8.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 64K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xB.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 128K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xC.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 256K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 48K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xD.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 384K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xE.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 512K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xF.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 768K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

31
matrix_keyboard/ld/stm32f103xG.ld Normal file
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/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2012 Karl Palsson <karlp@tweak.net.au>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
/* Linker script for STM32F100x4, 16K flash, 4K RAM. */
/* Define memory regions. */
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 1024K
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 96K
}
/* Include the common ld script. */
INCLUDE libopencm3_stm32f1.ld

277
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/*
* main.c
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <stdlib.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/cm3/systick.h>
#include <libopencm3/usb/usbd.h>
#include <libopencm3/usb/hid.h>
#include <libopencm3/cm3/nvic.h>
#include "keycodes.h"
#include "matrixkbd.h"
const struct usb_device_descriptor dev = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
.bcdUSB = 0x0200,
.bDeviceClass = 0,
.bDeviceSubClass = 0,
.bDeviceProtocol = 0,
.bMaxPacketSize0 = 64,
// 0x03EB 0x2042 - Atmel Keyboard Demo Application
.idVendor = 0x03EB,
.idProduct = 0x2042,
.bcdDevice = 0x0200,
.iManufacturer = 1,
.iProduct = 2,
.iSerialNumber = 3,
.bNumConfigurations = 1,
};
static const uint8_t hid_report_descriptor[] = {
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x06, /* Usage (Keyboard) */
0xA1, 0x01, /* Collection (Application) */
// 0x85, 0x02, /* Report ID */
0x05, 0x07, /* Usage (Key codes) */
0x19, 0xE0, /* Usage Minimum (224) */
0x29, 0xE7, /* Usage Maximum (231) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x01, /* Logical Maximum (1) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x08, /* Report Count (8) */
0x81, 0x02, /* Input (Data, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x08, /* Report Size (8) */
0x81, 0x01, /* Input (Constant) ;5 bit padding */
0x95, 0x05, /* Report Count (5) */
0x75, 0x01, /* Report Size (1) */
0x05, 0x08, /* Usage Page (Page# for LEDs) */
0x19, 0x01, /* Usage Minimum (01) */
0x29, 0x05, /* Usage Maximum (05) */
0x91, 0x02, /* Output (Data, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x03, /* Report Size (3) */
0x91, 0x01, /* Output (Constant) */
0x95, 0x06, /* Report Count (1) */
0x75, 0x08, /* Report Size (3) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x65, /* Logical Maximum (101) */
0x05, 0x07, /* Usage (Key codes) */
0x19, 0x00, /* Usage Minimum (00) */
0x29, 0x65, /* Usage Maximum (101) */
0x81, 0x00, /* Input (Data, Array) */
0x09, 0x05, /* Usage (Vendor Defined) */
0x15, 0x00, /* Logical Minimum (0)) */
0x26, 0xFF, 0x00, /* Logical Maximum (255)) */
0x75, 0x08, /* Report Count (2)) */
0x95, 0x02, /* Report Size (8 bit)) */
0xB1, 0x02, /* Feature (Data, Variable, Absolute) */
0xC0 /* End Collection,End Collection */
};
#if 0
0x05, 0x01, // Usage Page (Generic Desktop),
0x09, 0x06, // Usage (Keyboard),
0xA1, 0x01, // Collection (Application),
0x75, 0x01, // Report Size (1),
0x95, 0x08, // Report Count (8),
0x05, 0x07, // Usage Page (Key Codes),
0x19, 0xE0, // Usage Minimum (224),
0x29, 0xE7, // Usage Maximum (231),
0x15, 0x00, // Logical Minimum (0),
0x25, 0x01, // Logical Maximum (1),
0x81, 0x02, // Input (Data, Variable, Absolute), ;Modifier byte
0x95, 0x01, // Report Count (1),
0x75, 0x08, // Report Size (8),
0x81, 0x03, // Input (Constant), ;Reserved byte
0x95, 0x05, // Report Count (5),
0x75, 0x01, // Report Size (1),
0x05, 0x08, // Usage Page (LEDs),
0x19, 0x01, // Usage Minimum (1),
0x29, 0x05, // Usage Maximum (5),
0x91, 0x02, // Output (Data, Variable, Absolute), ;LED report
0x95, 0x01, // Report Count (1),
0x75, 0x03, // Report Size (3),
0x91, 0x03, // Output (Constant), ;LED report padding
0x95, 0x06, // Report Count (6),
0x75, 0x08, // Report Size (8),
0x15, 0x00, // Logical Minimum (0),
0x25, 0x68, // Logical Maximum(104),
0x05, 0x07, // Usage Page (Key Codes),
0x19, 0x00, // Usage Minimum (0),
0x29, 0x68, // Usage Maximum (104),
0x81, 0x00, // Input (Data, Array),
0xc0 // End Collection
};
#endif
static const struct {
struct usb_hid_descriptor hid_descriptor;
struct {
uint8_t bReportDescriptorType;
uint16_t wDescriptorLength;
} __attribute__((packed)) hid_report;
} __attribute__((packed)) hid_function = {
.hid_descriptor = {
.bLength = sizeof(hid_function),
.bDescriptorType = USB_DT_HID,
.bcdHID = 0x0100,
.bCountryCode = 0,
.bNumDescriptors = 1,
},
.hid_report = {
.bReportDescriptorType = USB_DT_REPORT,
.wDescriptorLength = sizeof(hid_report_descriptor),
},
};
const struct usb_endpoint_descriptor hid_endpoint = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
.bEndpointAddress = 0x81,
.bmAttributes = USB_ENDPOINT_ATTR_INTERRUPT,
.wMaxPacketSize = 8,
.bInterval = 0x10,
};
const struct usb_interface_descriptor hid_iface = {
.bLength = USB_DT_INTERFACE_SIZE,
.bDescriptorType = USB_DT_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 1, // boot
.bInterfaceProtocol = 1, // keyboard
.iInterface = 0,
.endpoint = &hid_endpoint,
.extra = &hid_function,
.extralen = sizeof(hid_function),
};
const struct usb_interface ifaces[] = {{
.num_altsetting = 1,
.altsetting = &hid_iface,
}};
const struct usb_config_descriptor config = {
.bLength = USB_DT_CONFIGURATION_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
.wTotalLength = 0,
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = 0,
.bmAttributes = 0xC0,
.bMaxPower = 0x32,
.interface = ifaces,
};
static const char *usb_strings[] = {
"Simple matrix keyboard 3x4",
"EEV",
"v01",
};
/* Buffer to be used for control requests. */
uint8_t usbd_control_buffer[128];
static int hid_control_request(usbd_device *usbd_dev, struct usb_setup_data *req, uint8_t **buf, uint16_t *len,
void (**complete)(usbd_device *usbd_dev, struct usb_setup_data *req)){
(void)complete;
(void)usbd_dev;
if ((req->bmRequestType != 0x81) ||
(req->bRequest != USB_REQ_GET_DESCRIPTOR) ||
(req->wValue != 0x2200))
return 0;
*buf = (uint8_t *)hid_report_descriptor;
*len = sizeof(hid_report_descriptor);
return 1;
}
static void hid_set_config(usbd_device *usbd_dev, uint16_t wValue){
(void)wValue;
(void)usbd_dev;
usbd_ep_setup(usbd_dev, 0x81, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
usbd_register_control_callback(
usbd_dev,
USB_REQ_TYPE_STANDARD | USB_REQ_TYPE_INTERFACE,
USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
hid_control_request);
}
/*
* SysTick used for system timer with period of 1ms
*/
void SysTick_init(){
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8); // Systyck: 72/8=9MHz
systick_set_reload(8999); // 9000 pulses: 1kHz
systick_interrupt_enable();
systick_counter_enable();
}
int main(void){
usbd_device *usbd_dev;
rcc_clock_setup_in_hsi_out_48mhz();
SysTick_init();
/*
// if PC11 connected to usb 1.5kOhm pull-up through transistor
rcc_periph_clock_enable(RCC_GPIOC);
gpio_set(GPIOC, GPIO11);
gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
*/
usbd_dev = usbd_init(&stm32f103_usb_driver, &dev, &config, usb_strings, 3, usbd_control_buffer, sizeof(usbd_control_buffer));
usbd_register_set_config_callback(usbd_dev, hid_set_config);
matrixkbd_init();
/*
int i;
for (i = 0; i < 0x80000; i++)
__asm__("nop");
gpio_clear(GPIOC, GPIO11);
*/
while (1){
char prsd, rlsd;
usbd_poll(usbd_dev);
get_matrixkbd(&prsd, &rlsd);
if(rlsd)
while(8 != usbd_ep_write_packet(usbd_dev, 0x81, release_key(), 8));
if(prsd)
while(8 != usbd_ep_write_packet(usbd_dev, 0x81, press_key(prsd), 8));
}
}
volatile uint32_t Timer = 0; // global timer (milliseconds)
/**
* SysTick interrupt: increment global time & send data buffer through USB
*/
void sys_tick_handler(){
Timer++;
}

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/*
* matrixkbd.c
* Simple utilite for working with matrix keyboard 3columns x 4rows
* Don't understand multiple keys!!!
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "matrixkbd.h"
extern volatile uint32_t Timer;
#if !defined(KBD_3BY4) && !defined(KBD_4BY4)
#error You should define keyboard type: KBD_3BY4 or KBD_4BY4
#endif
/*
* Rows are inputs, columns are outputs
*/
#define ROWS 4
const uint32_t row_ports[ROWS] = {ROW1_PORT, ROW2_PORT, ROW3_PORT, ROW4_PORT};
const uint16_t row_pins[ROWS] = {ROW1_PIN, ROW2_PIN, ROW3_PIN, ROW4_PIN};
// symbols[Rows][Columns]
#if defined(KBD_3BY4)
#define COLS 3
const uint32_t col_ports[COLS] = {COL1_PORT, COL2_PORT, COL3_PORT};
const uint16_t col_pins[COLS] = {COL1_PIN, COL2_PIN, COL3_PIN};
char kbd[ROWS][COLS] = {
{'1', '2', '3'},
{'4', '5', '6'},
{'7', '8', '9'},
{'*', '0', '#'}
};
#elif defined(KBD_4BY4)
#define COLS 4
const uint32_t col_ports[COLS] = {COL1_PORT, COL2_PORT, COL3_PORT, COL4_PORT};
const uint16_t col_pins[COLS] = {COL1_PIN, COL2_PIN, COL3_PIN, COL4_PIN};
char kbd[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
#endif
uint8_t oldstate[ROWS][COLS];
/**
* init keyboard pins: all columns are opendrain outputs
* all rows are pullup inputs
*/
void matrixkbd_init(){
int i, j;
rcc_peripheral_enable_clock(&RCC_APB2ENR, KBD_RCC_PORT_CLOCK);
for(i = 0; i < COLS; ++i){
gpio_set(col_ports[i], col_pins[i]);
gpio_set_mode(col_ports[i], GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_OPENDRAIN,
col_pins[i]);
}
for(i = 0; i < ROWS; ++i){
gpio_set(row_ports[i], row_pins[i]);
gpio_set_mode(row_ports[i], GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN,
row_pins[i]);
}
for(j = 0; j < ROWS; ++j)
for(i = 0; i < COLS; ++i)
oldstate[j][i] = 1;
}
/**
* Check keyboard
* if some key pressed, set prsd to its value (symbol)
* if released - set rlsd to 1
* works onse per 60ms
* DON't work with multiple key pressing!
* In case of simultaneous pressing it will return at first call code of
* first key met, at second - second and so on
*/
void get_matrixkbd(char *prsd, char *rlsd){
*prsd = 0;
*rlsd = 0;
static uint32_t oldTimer = 0;
if(Timer > oldTimer && Timer - oldTimer < KBD_TIMEOUT) return;
int r, c;
for(c = 0; c < COLS; ++c){
gpio_clear(col_ports[c], col_pins[c]);
oldTimer = Timer;
while(oldTimer == Timer); // wait at least one second
for(r = 0; r < ROWS; ++r){
uint8_t st = (gpio_get(row_ports[r], row_pins[r])) ? 1 : 0;
if(oldstate[r][c] != st){ // button state changed
oldstate[r][c] = st;
gpio_set(col_ports[c], col_pins[c]);
if(st == 1){ // released
*rlsd = 1;
}else{
*prsd = kbd[r][c];
}
return;
}
}
gpio_set(col_ports[c], col_pins[c]);
}
}

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/*
* matrixkbd.h
*
* Copyright 2015 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <stdint.h>
#include <stdlib.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
void matrixkbd_init();
void get_matrixkbd(char *prsd, char *rlsd);
// timeout for keyboard checkout
#define KBD_TIMEOUT 50
// kbd ports for clock_enable
#define KBD_RCC_PORT_CLOCK (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN)
// Rows pins & ports: PB15, 13, 11 & 10
#define ROW1_PORT (GPIOB)
#define ROW1_PIN (GPIO15)
#define ROW2_PORT (GPIOB)
#define ROW2_PIN (GPIO13)
#define ROW3_PORT (GPIOB)
#define ROW3_PIN (GPIO11)
#define ROW4_PORT (GPIOB)
#define ROW4_PIN (GPIO10)
// Columns pins & ports: PB1, PA7 & PA5
#define COL1_PORT (GPIOB)
#define COL1_PIN (GPIO1)
#define COL2_PORT (GPIOA)
#define COL2_PIN (GPIO7)
#define COL3_PORT (GPIOA)
#define COL3_PIN (GPIO5)
//#define COL4_PORT ()
//#define COL4_PIN ()

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