468 lines
10 KiB
C
468 lines
10 KiB
C
/*
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Copyright 2011 Jun Wako <wakojun@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* host driver for Bulegiga iWRAP */
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/* Bluegiga BT12
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* Connections
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* Hardware UART Software UART BlueTooth
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* PC=====UART=======AVR=====SUART====iWRAP(BT12)-----------PC
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*
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* - Hardware UART for Debug Console to communicate iWRAP
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* - Software UART for iWRAP control to send keyboard/mouse data
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*/
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#include <stdint.h>
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#include <string.h>
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#include <avr/interrupt.h>
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#include <util/delay.h>
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#include "usb_keycodes.h"
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#include "suart.h"
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#include "uart.h"
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#include "report.h"
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#include "host_driver.h"
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#include "iwrap.h"
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#include "print.h"
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/* iWRAP MUX mode utils. 3.10 HID raw mode(iWRAP_HID_Application_Note.pdf) */
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#define MUX_HEADER(LINK, LENGTH) do { \
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xmit(0xbf); /* SOF */ \
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xmit(LINK); /* Link */ \
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xmit(0x00); /* Flags */ \
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xmit(LENGTH); /* Length */ \
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} while (0)
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#define MUX_FOOTER(LINK) xmit(LINK^0xff)
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static uint8_t connected = 0;
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//static uint8_t channel = 1;
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/* iWRAP buffer */
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#define MUX_BUF_SIZE 64
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static char buf[MUX_BUF_SIZE];
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static uint8_t snd_pos = 0;
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#define MUX_RCV_BUF_SIZE 256
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static char rcv_buf[MUX_RCV_BUF_SIZE];
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static uint8_t rcv_head = 0;
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static uint8_t rcv_tail = 0;
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/* receive buffer */
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static void rcv_enq(char c)
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{
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uint8_t next = (rcv_head + 1) % MUX_RCV_BUF_SIZE;
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if (next != rcv_tail) {
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rcv_buf[rcv_head] = c;
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rcv_head = next;
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}
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}
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static char rcv_deq(void)
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{
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char c = 0;
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if (rcv_head != rcv_tail) {
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c = rcv_buf[rcv_tail++];
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rcv_tail %= MUX_RCV_BUF_SIZE;
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}
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return c;
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}
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/*
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static char rcv_peek(void)
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{
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if (rcv_head == rcv_tail)
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return 0;
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return rcv_buf[rcv_tail];
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}
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*/
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static void rcv_clear(void)
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{
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rcv_tail = rcv_head = 0;
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}
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/* iWRAP response */
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ISR(PCINT1_vect, ISR_BLOCK) // recv() runs away in case of ISR_NOBLOCK
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{
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if ((SUART_IN_PIN & (1<<SUART_IN_BIT)))
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return;
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static volatile uint8_t mux_state = 0xff;
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static volatile uint8_t mux_link = 0xff;
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uint8_t c = recv();
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switch (mux_state) {
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case 0xff: // SOF
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if (c == 0xbf)
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mux_state--;
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break;
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case 0xfe: // Link
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mux_state--;
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mux_link = c;
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break;
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case 0xfd: // Flags
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mux_state--;
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break;
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case 0xfc: // Length
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mux_state = c;
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break;
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case 0x00:
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mux_state = 0xff;
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mux_link = 0xff;
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break;
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default:
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if (mux_state--) {
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uart_putchar(c);
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rcv_enq(c);
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}
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}
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}
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/*------------------------------------------------------------------*
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* iWRAP communication
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*------------------------------------------------------------------*/
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void iwrap_init(void)
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{
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// reset iWRAP if in already MUX mode after AVR software-reset
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iwrap_send("RESET");
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iwrap_mux_send("RESET");
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_delay_ms(3000);
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iwrap_send("\r\nSET CONTROL MUX 1\r\n");
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_delay_ms(500);
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iwrap_check_connection();
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}
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void iwrap_mux_send(const char *s)
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{
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rcv_clear();
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MUX_HEADER(0xff, strlen((char *)s));
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iwrap_send(s);
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MUX_FOOTER(0xff);
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}
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void iwrap_send(const char *s)
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{
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while (*s)
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xmit(*s++);
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}
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/* send buffer */
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void iwrap_buf_add(uint8_t c)
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{
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// need space for '\0'
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if (snd_pos < MUX_BUF_SIZE-1)
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buf[snd_pos++] = c;
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}
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void iwrap_buf_del(void)
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{
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if (snd_pos)
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snd_pos--;
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}
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void iwrap_buf_send(void)
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{
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buf[snd_pos] = '\0';
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snd_pos = 0;
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iwrap_mux_send(buf);
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}
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void iwrap_call(void)
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{
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char *p;
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iwrap_mux_send("SET BT PAIR");
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_delay_ms(500);
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p = rcv_buf + rcv_tail;
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while (!strncmp(p, "SET BT PAIR", 11)) {
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p += 7;
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strncpy(p, "CALL", 4);
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strncpy(p+22, " 11 HID\n\0", 9);
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print_S(p);
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iwrap_mux_send(p);
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// TODO: skip to next line
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p += 57;
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DEBUG_LED_CONFIG;
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DEBUG_LED_ON;
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_delay_ms(500);
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DEBUG_LED_OFF;
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_delay_ms(500);
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DEBUG_LED_ON;
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_delay_ms(500);
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DEBUG_LED_OFF;
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_delay_ms(500);
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DEBUG_LED_ON;
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_delay_ms(500);
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DEBUG_LED_OFF;
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_delay_ms(500);
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DEBUG_LED_ON;
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_delay_ms(500);
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DEBUG_LED_OFF;
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_delay_ms(500);
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DEBUG_LED_ON;
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_delay_ms(500);
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DEBUG_LED_OFF;
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_delay_ms(500);
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}
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iwrap_check_connection();
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}
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void iwrap_kill(void)
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{
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char c;
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iwrap_mux_send("LIST");
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_delay_ms(500);
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while ((c = rcv_deq()) && c != '\n') ;
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if (strncmp(rcv_buf + rcv_tail, "LIST ", 5)) {
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print("no connection to kill.\n");
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return;
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}
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// skip 10 'space' chars
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for (uint8_t i = 10; i; i--)
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while ((c = rcv_deq()) && c != ' ') ;
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char *p = rcv_buf + rcv_tail - 5;
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strncpy(p, "KILL ", 5);
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strncpy(p + 22, "\n\0", 2);
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print_S(p);
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iwrap_mux_send(p);
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_delay_ms(500);
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iwrap_check_connection();
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}
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void iwrap_unpair(void)
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{
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iwrap_mux_send("SET BT PAIR");
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_delay_ms(500);
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char *p = rcv_buf + rcv_tail;
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if (!strncmp(p, "SET BT PAIR", 11)) {
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strncpy(p+29, "\n\0", 2);
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print_S(p);
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iwrap_mux_send(p);
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}
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}
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void iwrap_sleep(void)
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{
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iwrap_mux_send("SLEEP");
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}
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void iwrap_sniff(void)
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{
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}
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void iwrap_subrate(void)
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{
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}
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bool iwrap_failed(void)
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{
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if (strncmp(rcv_buf, "SYNTAX ERROR", 12))
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return true;
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else
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return false;
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}
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uint8_t iwrap_connected(void)
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{
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return connected;
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}
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uint8_t iwrap_check_connection(void)
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{
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iwrap_mux_send("LIST");
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_delay_ms(100);
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if (strncmp(rcv_buf, "LIST ", 5) || !strncmp(rcv_buf, "LIST 0", 6))
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connected = 0;
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else
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connected = 1;
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return connected;
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}
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/*------------------------------------------------------------------*
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* Host driver
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*------------------------------------------------------------------*/
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static uint8_t keyboard_leds(void);
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static void send_keyboard(report_keyboard_t *report);
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static void send_mouse(report_mouse_t *report);
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static void send_system(uint16_t data);
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static void send_consumer(uint16_t data);
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static host_driver_t driver = {
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keyboard_leds,
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send_keyboard,
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send_mouse,
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send_system,
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send_consumer
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};
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host_driver_t *iwrap_driver(void)
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{
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return &driver;
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}
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static uint8_t keyboard_leds(void) {
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return 0;
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}
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static void send_keyboard(report_keyboard_t *report)
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{
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if (!iwrap_connected() && !iwrap_check_connection()) return;
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MUX_HEADER(0x01, 0x0c);
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// HID raw mode header
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xmit(0x9f);
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xmit(0x0a); // Length
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xmit(0xa1); // keyboard report
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xmit(0x01);
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xmit(report->mods);
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xmit(0x00); // reserved byte(always 0)
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xmit(report->keys[0]);
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xmit(report->keys[1]);
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xmit(report->keys[2]);
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xmit(report->keys[3]);
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xmit(report->keys[4]);
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xmit(report->keys[5]);
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MUX_FOOTER(0x01);
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}
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static void send_mouse(report_mouse_t *report)
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{
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#if defined(MOUSEKEY_ENABLE) || defined(PS2_MOUSE_ENABLE)
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if (!iwrap_connected() && !iwrap_check_connection()) return;
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MUX_HEADER(0x01, 0x07);
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// HID raw mode header
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xmit(0x9f);
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xmit(0x05); // Length
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xmit(0xa1); // mouse report
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xmit(0x02);
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xmit(report->buttons);
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xmit(report->x);
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xmit(report->y);
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MUX_FOOTER(0x01);
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#endif
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}
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static void send_system(uint16_t data)
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{
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/* not supported */
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}
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static void send_consumer(uint16_t data)
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{
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#ifdef EXTRAKEY_ENABLE
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static uint16_t last_data = 0;
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uint8_t bits1 = 0;
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uint8_t bits2 = 0;
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uint8_t bits3 = 0;
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if (!iwrap_connected() && !iwrap_check_connection()) return;
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if (data == last_data) return;
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last_data = data;
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// 3.10 HID raw mode(iWRAP_HID_Application_Note.pdf)
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switch (data) {
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case AUDIO_VOL_UP:
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bits1 = 0x01;
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break;
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case AUDIO_VOL_DOWN:
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bits1 = 0x02;
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break;
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case AUDIO_MUTE:
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bits1 = 0x04;
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break;
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case TRANSPORT_PLAY_PAUSE:
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bits1 = 0x08;
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break;
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case TRANSPORT_NEXT_TRACK:
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bits1 = 0x10;
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break;
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case TRANSPORT_PREV_TRACK:
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bits1 = 0x20;
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break;
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case TRANSPORT_STOP:
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bits1 = 0x40;
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break;
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case TRANSPORT_EJECT:
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bits1 = 0x80;
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break;
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case AL_EMAIL:
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bits2 = 0x01;
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break;
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case AC_SEARCH:
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bits2 = 0x02;
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break;
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case AC_BOOKMARKS:
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bits2 = 0x04;
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break;
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case AC_HOME:
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bits2 = 0x08;
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break;
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case AC_BACK:
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bits2 = 0x10;
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break;
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case AC_FORWARD:
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bits2 = 0x20;
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break;
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case AC_STOP:
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bits2 = 0x40;
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break;
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case AC_REFRESH:
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bits2 = 0x80;
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break;
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case AL_CC_CONFIG:
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bits3 = 0x01;
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break;
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case AL_CALCULATOR:
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bits3 = 0x04;
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break;
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case AL_LOCK:
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bits3 = 0x08;
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break;
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case AL_LOCAL_BROWSER:
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bits3 = 0x10;
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break;
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case AC_MINIMIZE:
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bits3 = 0x20;
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break;
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case TRANSPORT_RECORD:
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bits3 = 0x40;
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break;
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case TRANSPORT_REWIND:
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bits3 = 0x80;
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break;
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}
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MUX_HEADER(0x01, 0x07);
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xmit(0x9f);
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xmit(0x05); // Length
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xmit(0xa1); // consumer report
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xmit(0x03);
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xmit(bits1);
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xmit(bits2);
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xmit(bits3);
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MUX_FOOTER(0x01);
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#endif
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}
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