hhkb: Move functions which communicate with RN42
[tmk_keyboard.git] / keyboard / hhkb / rn42 / rn42.c
1 #include <avr/io.h>
2 #include "host.h"
3 #include "host_driver.h"
4 #include "serial.h"
5 #include "rn42.h"
6 #include "print.h"
7 #include "timer.h"
8 #include "wait.h"
9
10
11 /* Host driver */
12 static uint8_t keyboard_leds(void);
13 static void send_keyboard(report_keyboard_t *report);
14 static void send_mouse(report_mouse_t *report);
15 static void send_system(uint16_t data);
16 static void send_consumer(uint16_t data);
17
18 host_driver_t rn42_driver = {
19 keyboard_leds,
20 send_keyboard,
21 send_mouse,
22 send_system,
23 send_consumer
24 };
25
26
27 void rn42_init(void)
28 {
29 // JTAG disable for PORT F. write JTD bit twice within four cycles.
30 MCUCR |= (1<<JTD);
31 MCUCR |= (1<<JTD);
32
33 // PF7: BT connection control(high: connect, low: disconnect)
34 rn42_autoconnect();
35
36 // PF6: linked(input without pull-up)
37 DDRF &= ~(1<<6);
38 PORTF |= (1<<6);
39
40 // PF1: RTS(low: allowed to send, high: not allowed)
41 DDRF &= ~(1<<1);
42 PORTF &= ~(1<<1);
43
44 // PD5: CTS(low: allow to send, high:not allow)
45 DDRD |= (1<<5);
46 PORTD &= ~(1<<5);
47
48 serial_init();
49 }
50
51 int16_t rn42_getc(void)
52 {
53 return serial_recv2();
54 }
55
56 const char *rn42_gets(uint16_t timeout)
57 {
58 static char s[24];
59 uint16_t t = timer_read();
60 uint8_t i = 0;
61 int16_t c;
62 while (i < 23 && timer_elapsed(t) < timeout) {
63 if ((c = rn42_getc()) != -1) {
64 if ((char)c == '\r') continue;
65 if ((char)c == '\n') break;
66 s[i++] = c;
67 }
68 }
69 s[i] = '\0';
70 return s;
71 }
72
73 void rn42_putc(uint8_t c)
74 {
75 serial_send(c);
76 }
77
78 void rn42_puts(char *s)
79 {
80 while (*s)
81 serial_send(*s++);
82 }
83
84 bool rn42_autoconnecting(void)
85 {
86 // GPIO6 for control connection(high: auto connect, low: disconnect)
87 // Note that this needs config: SM,4(Auto-Connect DTR Mode)
88 return (PORTF & (1<<7) ? true : false);
89 }
90
91 void rn42_autoconnect(void)
92 {
93 // hi to auto connect
94 DDRF |= (1<<7);
95 PORTF |= (1<<7);
96 }
97
98 void rn42_disconnect(void)
99 {
100 // low to disconnect
101 DDRF |= (1<<7);
102 PORTF &= ~(1<<7);
103 }
104
105 bool rn42_rts(void)
106 {
107 // low when RN-42 is powered and ready to receive
108 return PINF&(1<<1);
109 }
110
111 void rn42_cts_hi(void)
112 {
113 // not allow to send
114 PORTD |= (1<<5);
115 }
116
117 void rn42_cts_lo(void)
118 {
119 // allow to send
120 PORTD &= ~(1<<5);
121 }
122
123 bool rn42_linked(void)
124 {
125 // RN-42 GPIO2
126 // Hi-Z: Not powered
127 // High: Linked
128 // Low: Connecting
129 return PINF&(1<<6);
130 }
131
132
133 static uint8_t leds = 0;
134 static uint8_t keyboard_leds(void) { return leds; }
135 void rn42_set_leds(uint8_t l) { leds = l; }
136
137
138 void rn42_send_str(const char *str)
139 {
140 uint8_t c;
141 while ((c = pgm_read_byte(str++)))
142 rn42_putc(c);
143 }
144
145 const char *rn42_send_command(const char *cmd)
146 {
147 static const char *s;
148 rn42_send_str(cmd);
149 wait_ms(500);
150 s = rn42_gets(100);
151 xprintf("%s\r\n", s);
152 rn42_print_response();
153 return s;
154 }
155
156 void rn42_print_response(void)
157 {
158 int16_t c;
159 while ((c = rn42_getc()) != -1) {
160 xprintf("%c", c);
161 }
162 }
163
164
165 static void send_keyboard(report_keyboard_t *report)
166 {
167 // wake from deep sleep
168 /*
169 PORTD |= (1<<5); // high
170 wait_ms(5);
171 PORTD &= ~(1<<5); // low
172 */
173
174 serial_send(0xFD); // Raw report mode
175 serial_send(9); // length
176 serial_send(1); // descriptor type
177 serial_send(report->mods);
178 serial_send(0x00);
179 serial_send(report->keys[0]);
180 serial_send(report->keys[1]);
181 serial_send(report->keys[2]);
182 serial_send(report->keys[3]);
183 serial_send(report->keys[4]);
184 serial_send(report->keys[5]);
185 }
186
187 static void send_mouse(report_mouse_t *report)
188 {
189 // wake from deep sleep
190 /*
191 PORTD |= (1<<5); // high
192 wait_ms(5);
193 PORTD &= ~(1<<5); // low
194 */
195
196 serial_send(0xFD); // Raw report mode
197 serial_send(5); // length
198 serial_send(2); // descriptor type
199 serial_send(report->buttons);
200 serial_send(report->x);
201 serial_send(report->y);
202 serial_send(report->v);
203 }
204
205 static void send_system(uint16_t data)
206 {
207 // Table 5-6 of RN-BT-DATA-UB
208 // 81,82,83 scan codes can be used?
209 }
210
211
212 static uint16_t usage2bits(uint16_t usage)
213 {
214 switch (usage) {
215 case APPCONTROL_HOME: return 0x01;
216 case APPLAUNCH_EMAIL: return 0x02;
217 case APPCONTROL_SEARCH: return 0x04;
218 //case AL_KBD_LAYOUT: return 0x08; // Apple virtual keybaord toggle
219 case AUDIO_VOL_UP: return 0x10;
220 case AUDIO_VOL_DOWN: return 0x20;
221 case AUDIO_MUTE: return 0x40;
222 case TRANSPORT_PLAY_PAUSE: return 0x80;
223 case TRANSPORT_NEXT_TRACK: return 0x100;
224 case TRANSPORT_PREV_TRACK: return 0x200;
225 case TRANSPORT_STOP: return 0x400;
226 case TRANSPORT_STOP_EJECT: return 0x800;
227 case TRANSPORT_FAST_FORWARD: return 0x1000;
228 case TRANSPORT_REWIND: return 0x2000;
229 //case return 0x4000; // Stop/eject
230 //case return 0x8000; // Internet browser
231 };
232 return 0;
233 }
234
235 static void send_consumer(uint16_t data)
236 {
237 uint16_t bits = usage2bits(data);
238 serial_send(0xFD); // Raw report mode
239 serial_send(3); // length
240 serial_send(3); // descriptor type
241 serial_send(bits&0xFF);
242 serial_send((bits>>8)&0xFF);
243 }
244
245
246 /* Null driver for config_mode */
247 static uint8_t config_keyboard_leds(void);
248 static void config_send_keyboard(report_keyboard_t *report);
249 static void config_send_mouse(report_mouse_t *report);
250 static void config_send_system(uint16_t data);
251 static void config_send_consumer(uint16_t data);
252
253 host_driver_t rn42_config_driver = {
254 config_keyboard_leds,
255 config_send_keyboard,
256 config_send_mouse,
257 config_send_system,
258 config_send_consumer
259 };
260
261 static uint8_t config_keyboard_leds(void) { return leds; }
262 static void config_send_keyboard(report_keyboard_t *report) {}
263 static void config_send_mouse(report_mouse_t *report) {}
264 static void config_send_system(uint16_t data) {}
265 static void config_send_consumer(uint16_t data) {}
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