mirror of
https://salsa.debian.org/gnuk-team/gnuk/gnuk.git
synced 2024-09-21 03:10:08 +00:00
221 lines
4.8 KiB
C
221 lines
4.8 KiB
C
/*
|
|
* pin-dial.c -- PIN input device support (rotary encoder + push switch)
|
|
*
|
|
* Copyright (C) 2011 Free Software Initiative of Japan
|
|
* Author: NIIBE Yutaka <gniibe@fsij.org>
|
|
*
|
|
* This file is a part of Gnuk, a GnuPG USB Token implementation.
|
|
*
|
|
* Gnuk 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 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Gnuk 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
#include "board.h"
|
|
#include "gnuk.h"
|
|
|
|
uint8_t pin_input_buffer[MAX_PIN_CHARS];
|
|
uint8_t pin_input_len;
|
|
|
|
#define LED_DISP_BLINK_INTERVAL0 MS2ST(150)
|
|
#define LED_DISP_BLINK_INTERVAL1 MS2ST(100)
|
|
|
|
/*
|
|
* PB6 TIM4_CH1
|
|
* PB7 TIM4_CH2
|
|
*
|
|
* TIM4_SMCR
|
|
* SMS = 001
|
|
* TIM4_CCER
|
|
* CC1P = 0
|
|
* CC2P = 0
|
|
* TIM4_CCMR1
|
|
* CC1S= 01
|
|
* CC2S= 01
|
|
* TIM4_CR1
|
|
* CEN= 1
|
|
*/
|
|
|
|
#define OFF '\x00'
|
|
#define ENTER '\x0a'
|
|
static struct led_pattern { uint8_t c, v; } led_pattern[] =
|
|
{
|
|
/* char : dp a b c d e f g */
|
|
{ ENTER, 0xf8 }, /* |- : 1 1 1 1 1 0 0 0 (enter) */
|
|
{ ' ', 0xff }, /* SPC : 1 1 1 1 1 1 1 1 */
|
|
{ '0', 0x81 }, /* 0 : 1 0 0 0 0 0 0 1 */
|
|
{ '1', 0xcf }, /* 1 : 1 1 0 0 1 1 1 1 */
|
|
{ '2', 0x92 }, /* 2 : 1 0 0 1 0 0 1 0 */
|
|
{ '3', 0x86 }, /* 3 : 1 0 0 0 0 1 1 0 */
|
|
{ '4', 0xcc }, /* 4 : 1 1 0 0 1 1 0 0 */
|
|
{ '5', 0xa4 }, /* 5 : 1 0 1 0 0 1 0 0 */
|
|
{ '6', 0xa0 }, /* 6 : 1 0 1 0 0 0 0 0 */
|
|
{ '7', 0x8d }, /* 7 : 1 0 0 0 1 1 0 1 */
|
|
{ '8', 0x80 }, /* 8 : 1 0 0 0 0 0 0 0 */
|
|
{ '9', 0x84 }, /* 9 : 1 0 0 0 0 1 0 0 */
|
|
{ 'A', 0x88 }, /* A : 1 0 0 0 1 0 0 0 */
|
|
{ 'B', 0xe0 }, /* b : 1 1 1 0 0 0 0 0 */
|
|
{ 'C', 0xb1 }, /* C : 1 0 1 1 0 0 0 1 */
|
|
{ 'D', 0xc2 }, /* d : 1 1 0 0 0 0 1 0 */
|
|
{ 'E', 0xb0 }, /* E : 1 0 1 1 0 0 0 0 */
|
|
{ 'F', 0xb8 }, /* F : 1 0 1 1 1 0 0 0 */
|
|
|
|
{ 'G', 0xa1 }, /* G : 1 0 1 0 0 0 0 1 */
|
|
{ '\xff', 0xce }, /* -| : 1 1 0 0 1 1 1 0 (backspace) */
|
|
};
|
|
|
|
#define LENGTH_LED_PATTERN (int)(sizeof led_pattern / sizeof (struct led_pattern))
|
|
|
|
static void
|
|
led_disp (uint8_t c)
|
|
{
|
|
uint16_t v = palReadPort (IOPORT2) | 0x00ff;
|
|
|
|
if (c == OFF)
|
|
v |= 0xff00;
|
|
else
|
|
{
|
|
int i;
|
|
|
|
v &= 0x80ff;
|
|
for (i = 0; i < LENGTH_LED_PATTERN; i++)
|
|
if (led_pattern[i].c == c)
|
|
{
|
|
v |= ((led_pattern[i].v & 0x7f) << 8); /* Don't touch DP. */
|
|
break;
|
|
}
|
|
else if (led_pattern[i].c > c)
|
|
{
|
|
v |= 0x7f00; /* default: SPC */
|
|
break;
|
|
}
|
|
}
|
|
|
|
palWritePort (IOPORT2, v);
|
|
}
|
|
|
|
static void
|
|
blink_dp (void)
|
|
{
|
|
uint16_t v = palReadPort (IOPORT2) | 0x00ff;
|
|
|
|
v ^= 0x8000;
|
|
palWritePort (IOPORT2, v);
|
|
}
|
|
|
|
static Thread *pin_thread;
|
|
|
|
void
|
|
dial_sw_interrupt (void)
|
|
{
|
|
dial_sw_disable ();
|
|
chEvtSignalI (pin_thread, EV_PINPAD_INPUT_DONE);
|
|
palClearPad (IOPORT1, GPIOA_LED2);
|
|
}
|
|
|
|
|
|
int
|
|
pinpad_getline (int msg_code, systime_t timeout)
|
|
{
|
|
uint16_t count, count_prev;
|
|
uint8_t input_mode;
|
|
uint8_t sw_push_count;
|
|
uint8_t sw_event;
|
|
|
|
(void)msg_code;
|
|
|
|
pin_thread = chThdSelf ();
|
|
led_disp (' ');
|
|
|
|
TIM4->CNT = 0;
|
|
TIM4->CR1 |= TIM_CR1_CEN;
|
|
input_mode = 0;
|
|
count = count_prev = 0;
|
|
pin_input_len = 0;
|
|
sw_push_count = 0;
|
|
sw_event = 0;
|
|
|
|
while (1)
|
|
{
|
|
eventmask_t m;
|
|
|
|
blink_dp ();
|
|
dial_sw_enable ();
|
|
m = chEvtWaitOneTimeout (ALL_EVENTS, LED_DISP_BLINK_INTERVAL0);
|
|
|
|
if (m == EV_PINPAD_INPUT_DONE || sw_push_count)
|
|
{
|
|
if (palReadPad (IOPORT2, GPIOB_BUTTON) == 0)
|
|
sw_push_count++;
|
|
else /* ignore this bounce */
|
|
{
|
|
palSetPad (IOPORT1, GPIOA_LED2);
|
|
sw_push_count = 0;
|
|
}
|
|
}
|
|
|
|
if (sw_push_count >= 2)
|
|
sw_event = 1;
|
|
|
|
count = (TIM4->CNT) / 2;
|
|
|
|
if (input_mode == 1)
|
|
{
|
|
if (count_prev != count)
|
|
input_mode = 0;
|
|
else
|
|
{
|
|
led_disp (ENTER);
|
|
if (sw_event)
|
|
{
|
|
palSetPad (IOPORT1, GPIOA_LED2);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (input_mode == 0)
|
|
{
|
|
uint8_t c;
|
|
|
|
if (count < 10)
|
|
c = count + '0';
|
|
else
|
|
c = (count - 10) + 'A';
|
|
|
|
led_disp (c);
|
|
|
|
if (sw_event)
|
|
{
|
|
pin_input_buffer[pin_input_len] = c;
|
|
if (pin_input_len < MAX_PIN_CHARS - 1)
|
|
pin_input_len++;
|
|
input_mode = 1;
|
|
sw_event = sw_push_count = 0;
|
|
palSetPad (IOPORT1, GPIOA_LED2);
|
|
}
|
|
}
|
|
|
|
chThdSleep (LED_DISP_BLINK_INTERVAL1);
|
|
count_prev = count;
|
|
}
|
|
|
|
led_disp (OFF);
|
|
TIM4->CR1 &= ~TIM_CR1_CEN;
|
|
dial_sw_disable ();
|
|
return pin_input_len;
|
|
}
|