7 #ifdef ADAFRUIT_BLE_ENABLE
8 #include "adafruit_ble.h"
16 extern const unsigned char font
[] PROGMEM
;
18 // Set this to 1 to help diagnose early startup problems
19 // when testing power-on with ble. Turn it off otherwise,
20 // as the latency of printing most of the debug info messes
21 // with the matrix scan, causing keys to drop.
22 #define DEBUG_TO_SCREEN 0
24 //static uint16_t last_battery_update;
25 //static uint32_t vbat;
26 //#define BatteryUpdateInterval 10000 /* milliseconds */
28 // 'last_flush' is declared as uint16_t,
29 // so this must be less than 65535
30 #define ScreenOffInterval 30000 /* milliseconds */
32 static uint8_t displaying
;
34 static uint16_t last_flush
;
36 static bool force_dirty
= true;
38 // Write command sequence.
39 // Returns true on success.
40 static inline bool _send_cmd1(uint8_t cmd
) {
43 if (i2c_start_write(SSD1306_ADDRESS
)) {
44 xprintf("failed to start write to %d\n", SSD1306_ADDRESS
);
48 if (i2c_master_write(0x0 /* command byte follows */)) {
49 print("failed to write control byte\n");
54 if (i2c_master_write(cmd
)) {
55 xprintf("failed to write command %d\n", cmd
);
64 // Write 2-byte command sequence.
65 // Returns true on success
66 static inline bool _send_cmd2(uint8_t cmd
, uint8_t opr
) {
67 if (!_send_cmd1(cmd
)) {
70 return _send_cmd1(opr
);
73 // Write 3-byte command sequence.
74 // Returns true on success
75 static inline bool _send_cmd3(uint8_t cmd
, uint8_t opr1
, uint8_t opr2
) {
76 if (!_send_cmd1(cmd
)) {
79 if (!_send_cmd1(opr1
)) {
82 return _send_cmd1(opr2
);
85 #define send_cmd1(c) if (!_send_cmd1(c)) {goto done;}
86 #define send_cmd2(c,o) if (!_send_cmd2(c,o)) {goto done;}
87 #define send_cmd3(c,o1,o2) if (!_send_cmd3(c,o1,o2)) {goto done;}
89 static void clear_display(void) {
90 matrix_clear(&display
);
92 // Clear all of the display bits (there can be random noise
93 // in the RAM on startup)
94 send_cmd3(PageAddr
, 0, (DisplayHeight
/ 8) - 1);
95 send_cmd3(ColumnAddr
, 0, DisplayWidth
- 1);
97 if (i2c_start_write(SSD1306_ADDRESS
)) {
100 if (i2c_master_write(0x40)) {
104 for (uint8_t row
= 0; row
< MatrixRows
; ++row
) {
105 for (uint8_t col
= 0; col
< DisplayWidth
; ++col
) {
110 display
.dirty
= false;
118 static int8_t capture_sendchar(uint8_t c
) {
120 iota_gfx_write_char(c
);
129 bool iota_gfx_init(bool rotate
) {
130 bool success
= false;
133 send_cmd1(DisplayOff
);
134 send_cmd2(SetDisplayClockDiv
, 0x80);
135 send_cmd2(SetMultiPlex
, DisplayHeight
- 1);
137 send_cmd2(SetDisplayOffset
, 0);
140 send_cmd1(SetStartLine
| 0x0);
141 send_cmd2(SetChargePump
, 0x14 /* Enable */);
142 send_cmd2(SetMemoryMode
, 0 /* horizontal addressing */);
145 // the following Flip the display orientation 180 degrees
147 send_cmd1(ComScanInc
);
149 // Flips the display orientation 0 degrees
150 send_cmd1(SegRemap
| 0x1);
151 send_cmd1(ComScanDec
);
154 #ifdef SSD1306_128X64
155 send_cmd2(SetComPins
, 0x12);
157 send_cmd2(SetComPins
, 0x2);
159 send_cmd2(SetContrast
, 0x8f);
160 send_cmd2(SetPreCharge
, 0xf1);
161 send_cmd2(SetVComDetect
, 0x40);
162 send_cmd1(DisplayAllOnResume
);
163 send_cmd1(NormalDisplay
);
164 send_cmd1(DeActivateScroll
);
165 send_cmd1(DisplayOn
);
167 send_cmd2(SetContrast
, 0); // Dim
176 print_set_sendchar(capture_sendchar
);
183 bool iota_gfx_off(void) {
184 bool success
= false;
186 send_cmd1(DisplayOff
);
193 bool iota_gfx_on(void) {
194 bool success
= false;
196 send_cmd1(DisplayOn
);
203 void matrix_write_char_inner(struct CharacterMatrix
*matrix
, uint8_t c
) {
207 if (matrix
->cursor
- &matrix
->display
[0][0] == sizeof(matrix
->display
)) {
208 // We went off the end; scroll the display upwards by one line
209 memmove(&matrix
->display
[0], &matrix
->display
[1],
210 MatrixCols
* (MatrixRows
- 1));
211 matrix
->cursor
= &matrix
->display
[MatrixRows
- 1][0];
212 memset(matrix
->cursor
, ' ', MatrixCols
);
216 void matrix_write_char(struct CharacterMatrix
*matrix
, uint8_t c
) {
217 matrix
->dirty
= true;
220 // Clear to end of line from the cursor and then move to the
221 // start of the next line
222 uint8_t cursor_col
= (matrix
->cursor
- &matrix
->display
[0][0]) % MatrixCols
;
224 while (cursor_col
++ < MatrixCols
) {
225 matrix_write_char_inner(matrix
, ' ');
230 matrix_write_char_inner(matrix
, c
);
233 void iota_gfx_write_char(uint8_t c
) {
234 matrix_write_char(&display
, c
);
237 void matrix_write(struct CharacterMatrix
*matrix
, const char *data
) {
238 const char *end
= data
+ strlen(data
);
240 matrix_write_char(matrix
, *data
);
245 void matrix_write_ln(struct CharacterMatrix
*matrix
, const char *data
) {
246 char data_ln
[strlen(data
)+2];
247 snprintf(data_ln
, sizeof(data_ln
), "%s\n", data
);
248 matrix_write(matrix
, data_ln
);
251 void iota_gfx_write(const char *data
) {
252 matrix_write(&display
, data
);
255 void matrix_write_P(struct CharacterMatrix
*matrix
, const char *data
) {
257 uint8_t c
= pgm_read_byte(data
);
261 matrix_write_char(matrix
, c
);
266 void iota_gfx_write_P(const char *data
) {
267 matrix_write_P(&display
, data
);
270 void matrix_clear(struct CharacterMatrix
*matrix
) {
271 memset(matrix
->display
, ' ', sizeof(matrix
->display
));
272 matrix
->cursor
= &matrix
->display
[0][0];
273 matrix
->dirty
= true;
276 void iota_gfx_clear_screen(void) {
277 matrix_clear(&display
);
280 void matrix_render(struct CharacterMatrix
*matrix
) {
281 last_flush
= timer_read();
287 // Move to the home position
288 send_cmd3(PageAddr
, 0, MatrixRows
- 1);
289 send_cmd3(ColumnAddr
, 0, (MatrixCols
* FontWidth
) - 1);
291 if (i2c_start_write(SSD1306_ADDRESS
)) {
294 if (i2c_master_write(0x40)) {
299 for (uint8_t row
= 0; row
< MatrixRows
; ++row
) {
300 for (uint8_t col
= 0; col
< MatrixCols
; ++col
) {
301 const uint8_t *glyph
= font
+ (matrix
->display
[row
][col
] * FontWidth
);
303 for (uint8_t glyphCol
= 0; glyphCol
< FontWidth
; ++glyphCol
) {
304 uint8_t colBits
= pgm_read_byte(glyph
+ glyphCol
);
305 i2c_master_write(colBits
);
308 // 1 column of space between chars (it's not included in the glyph)
309 //i2c_master_write(0);
313 matrix
->dirty
= false;
322 void iota_gfx_flush(void) {
323 matrix_render(&display
);
326 __attribute__ ((weak
))
327 void iota_gfx_task_user(void) {
330 void iota_gfx_task(void) {
331 iota_gfx_task_user();
333 if (display
.dirty
|| force_dirty
) {
338 if (timer_elapsed(last_flush
) > ScreenOffInterval
) {
343 bool process_record_gfx(uint16_t keycode
, keyrecord_t
*record
) {