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path: root/drivers/avr/ssd1306.c
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Diffstat (limited to 'drivers/avr/ssd1306.c')
-rw-r--r--drivers/avr/ssd1306.c427
1 files changed, 211 insertions, 216 deletions
diff --git a/drivers/avr/ssd1306.c b/drivers/avr/ssd1306.c
index bb8938bba3..61d7a99531 100644
--- a/drivers/avr/ssd1306.c
+++ b/drivers/avr/ssd1306.c
@@ -1,325 +1,320 @@
#ifdef SSD1306OLED
-#include "ssd1306.h"
-#include "i2c.h"
-#include <string.h>
-#include "print.h"
-#include "glcdfont.c"
-#ifdef ADAFRUIT_BLE_ENABLE
-#include "adafruit_ble.h"
-#endif
-#ifdef PROTOCOL_LUFA
-#include "lufa.h"
-#endif
-#include "sendchar.h"
-#include "timer.h"
+# include "ssd1306.h"
+# include "i2c.h"
+# include <string.h>
+# include "print.h"
+# include "glcdfont.c"
+# ifdef ADAFRUIT_BLE_ENABLE
+# include "adafruit_ble.h"
+# endif
+# ifdef PROTOCOL_LUFA
+# include "lufa.h"
+# endif
+# include "sendchar.h"
+# include "timer.h"
// Set this to 1 to help diagnose early startup problems
// when testing power-on with ble. Turn it off otherwise,
// as the latency of printing most of the debug info messes
// with the matrix scan, causing keys to drop.
-#define DEBUG_TO_SCREEN 0
+# define DEBUG_TO_SCREEN 0
-//static uint16_t last_battery_update;
-//static uint32_t vbat;
+// static uint16_t last_battery_update;
+// static uint32_t vbat;
//#define BatteryUpdateInterval 10000 /* milliseconds */
-#define ScreenOffInterval 300000 /* milliseconds */
-#if DEBUG_TO_SCREEN
+# define ScreenOffInterval 300000 /* milliseconds */
+# if DEBUG_TO_SCREEN
static uint8_t displaying;
-#endif
+# endif
static uint16_t last_flush;
// Write command sequence.
// Returns true on success.
static inline bool _send_cmd1(uint8_t cmd) {
- bool res = false;
+ bool res = false;
- if (i2c_start_write(SSD1306_ADDRESS)) {
- xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
- goto done;
- }
+ if (i2c_start_write(SSD1306_ADDRESS)) {
+ xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
+ goto done;
+ }
- if (i2c_master_write(0x0 /* command byte follows */)) {
- print("failed to write control byte\n");
+ if (i2c_master_write(0x0 /* command byte follows */)) {
+ print("failed to write control byte\n");
- goto done;
- }
+ goto done;
+ }
- if (i2c_master_write(cmd)) {
- xprintf("failed to write command %d\n", cmd);
- goto done;
- }
- res = true;
+ if (i2c_master_write(cmd)) {
+ xprintf("failed to write command %d\n", cmd);
+ goto done;
+ }
+ res = true;
done:
- i2c_master_stop();
- return res;
+ i2c_master_stop();
+ return res;
}
// Write 2-byte command sequence.
// Returns true on success
static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
- if (!_send_cmd1(cmd)) {
- return false;
- }
- return _send_cmd1(opr);
+ if (!_send_cmd1(cmd)) {
+ return false;
+ }
+ return _send_cmd1(opr);
}
// Write 3-byte command sequence.
// Returns true on success
static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
- if (!_send_cmd1(cmd)) {
- return false;
- }
- if (!_send_cmd1(opr1)) {
- return false;
- }
- return _send_cmd1(opr2);
+ if (!_send_cmd1(cmd)) {
+ return false;
+ }
+ if (!_send_cmd1(opr1)) {
+ return false;
+ }
+ return _send_cmd1(opr2);
}
-#define send_cmd1(c) if (!_send_cmd1(c)) {goto done;}
-#define send_cmd2(c,o) if (!_send_cmd2(c,o)) {goto done;}
-#define send_cmd3(c,o1,o2) if (!_send_cmd3(c,o1,o2)) {goto done;}
+# define send_cmd1(c) \
+ if (!_send_cmd1(c)) { \
+ goto done; \
+ }
+# define send_cmd2(c, o) \
+ if (!_send_cmd2(c, o)) { \
+ goto done; \
+ }
+# define send_cmd3(c, o1, o2) \
+ if (!_send_cmd3(c, o1, o2)) { \
+ goto done; \
+ }
static void clear_display(void) {
- matrix_clear(&display);
-
- // Clear all of the display bits (there can be random noise
- // in the RAM on startup)
- send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
- send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
-
- if (i2c_start_write(SSD1306_ADDRESS)) {
- goto done;
- }
- if (i2c_master_write(0x40)) {
- // Data mode
- goto done;
- }
- for (uint8_t row = 0; row < MatrixRows; ++row) {
- for (uint8_t col = 0; col < DisplayWidth; ++col) {
- i2c_master_write(0);
+ matrix_clear(&display);
+
+ // Clear all of the display bits (there can be random noise
+ // in the RAM on startup)
+ send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
+ send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
+
+ if (i2c_start_write(SSD1306_ADDRESS)) {
+ goto done;
+ }
+ if (i2c_master_write(0x40)) {
+ // Data mode
+ goto done;
+ }
+ for (uint8_t row = 0; row < MatrixRows; ++row) {
+ for (uint8_t col = 0; col < DisplayWidth; ++col) {
+ i2c_master_write(0);
+ }
}
- }
- display.dirty = false;
+ display.dirty = false;
done:
- i2c_master_stop();
+ i2c_master_stop();
}
-#if DEBUG_TO_SCREEN
-#undef sendchar
+# if DEBUG_TO_SCREEN
+# undef sendchar
static int8_t capture_sendchar(uint8_t c) {
- sendchar(c);
- iota_gfx_write_char(c);
+ sendchar(c);
+ iota_gfx_write_char(c);
- if (!displaying) {
- iota_gfx_flush();
- }
- return 0;
+ if (!displaying) {
+ iota_gfx_flush();
+ }
+ return 0;
}
-#endif
+# endif
bool iota_gfx_init(void) {
- bool success = false;
+ bool success = false;
- send_cmd1(DisplayOff);
- send_cmd2(SetDisplayClockDiv, 0x80);
- send_cmd2(SetMultiPlex, DisplayHeight - 1);
+ send_cmd1(DisplayOff);
+ send_cmd2(SetDisplayClockDiv, 0x80);
+ send_cmd2(SetMultiPlex, DisplayHeight - 1);
- send_cmd2(SetDisplayOffset, 0);
+ send_cmd2(SetDisplayOffset, 0);
+ send_cmd1(SetStartLine | 0x0);
+ send_cmd2(SetChargePump, 0x14 /* Enable */);
+ send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
- send_cmd1(SetStartLine | 0x0);
- send_cmd2(SetChargePump, 0x14 /* Enable */);
- send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
+# ifdef OLED_ROTATE180
+ // the following Flip the display orientation 180 degrees
+ send_cmd1(SegRemap);
+ send_cmd1(ComScanInc);
+# endif
+# ifndef OLED_ROTATE180
+ // Flips the display orientation 0 degrees
+ send_cmd1(SegRemap | 0x1);
+ send_cmd1(ComScanDec);
+# endif
-#ifdef OLED_ROTATE180
-// the following Flip the display orientation 180 degrees
- send_cmd1(SegRemap);
- send_cmd1(ComScanInc);
-#endif
-#ifndef OLED_ROTATE180
-// Flips the display orientation 0 degrees
- send_cmd1(SegRemap | 0x1);
- send_cmd1(ComScanDec);
-#endif
-
- send_cmd2(SetComPins, 0x2);
- send_cmd2(SetContrast, 0x8f);
- send_cmd2(SetPreCharge, 0xf1);
- send_cmd2(SetVComDetect, 0x40);
- send_cmd1(DisplayAllOnResume);
- send_cmd1(NormalDisplay);
- send_cmd1(DeActivateScroll);
- send_cmd1(DisplayOn);
+ send_cmd2(SetComPins, 0x2);
+ send_cmd2(SetContrast, 0x8f);
+ send_cmd2(SetPreCharge, 0xf1);
+ send_cmd2(SetVComDetect, 0x40);
+ send_cmd1(DisplayAllOnResume);
+ send_cmd1(NormalDisplay);
+ send_cmd1(DeActivateScroll);
+ send_cmd1(DisplayOn);
- send_cmd2(SetContrast, 0); // Dim
+ send_cmd2(SetContrast, 0); // Dim
- clear_display();
+ clear_display();
- success = true;
+ success = true;
- iota_gfx_flush();
+ iota_gfx_flush();
-#if DEBUG_TO_SCREEN
- print_set_sendchar(capture_sendchar);
-#endif
+# if DEBUG_TO_SCREEN
+ print_set_sendchar(capture_sendchar);
+# endif
done:
- return success;
+ return success;
}
bool iota_gfx_off(void) {
- bool success = false;
+ bool success = false;
- send_cmd1(DisplayOff);
- success = true;
+ send_cmd1(DisplayOff);
+ success = true;
done:
- return success;
-}
+ return success;
+}
bool iota_gfx_on(void) {
- bool success = false;
+ bool success = false;
- send_cmd1(DisplayOn);
- success = true;
+ send_cmd1(DisplayOn);
+ success = true;
done:
- return success;
+ return success;
}
void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
- *matrix->cursor = c;
- ++matrix->cursor;
-
- if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
- // We went off the end; scroll the display upwards by one line
- memmove(&matrix->display[0], &matrix->display[1],
- MatrixCols * (MatrixRows - 1));
- matrix->cursor = &matrix->display[MatrixRows - 1][0];
- memset(matrix->cursor, ' ', MatrixCols);
- }
+ *matrix->cursor = c;
+ ++matrix->cursor;
+
+ if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
+ // We went off the end; scroll the display upwards by one line
+ memmove(&matrix->display[0], &matrix->display[1], MatrixCols * (MatrixRows - 1));
+ matrix->cursor = &matrix->display[MatrixRows - 1][0];
+ memset(matrix->cursor, ' ', MatrixCols);
+ }
}
void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
- matrix->dirty = true;
+ matrix->dirty = true;
- if (c == '\n') {
- // Clear to end of line from the cursor and then move to the
- // start of the next line
- uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
+ if (c == '\n') {
+ // Clear to end of line from the cursor and then move to the
+ // start of the next line
+ uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
- while (cursor_col++ < MatrixCols) {
- matrix_write_char_inner(matrix, ' ');
+ while (cursor_col++ < MatrixCols) {
+ matrix_write_char_inner(matrix, ' ');
+ }
+ return;
}
- return;
- }
- matrix_write_char_inner(matrix, c);
+ matrix_write_char_inner(matrix, c);
}
-void iota_gfx_write_char(uint8_t c) {
- matrix_write_char(&display, c);
-}
+void iota_gfx_write_char(uint8_t c) { matrix_write_char(&display, c); }
void matrix_write(struct CharacterMatrix *matrix, const char *data) {
- const char *end = data + strlen(data);
- while (data < end) {
- matrix_write_char(matrix, *data);
- ++data;
- }
+ const char *end = data + strlen(data);
+ while (data < end) {
+ matrix_write_char(matrix, *data);
+ ++data;
+ }
}
-void iota_gfx_write(const char *data) {
- matrix_write(&display, data);
-}
+void iota_gfx_write(const char *data) { matrix_write(&display, data); }
void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
- while (true) {
- uint8_t c = pgm_read_byte(data);
- if (c == 0) {
- return;
+ while (true) {
+ uint8_t c = pgm_read_byte(data);
+ if (c == 0) {
+ return;
+ }
+ matrix_write_char(matrix, c);
+ ++data;
}
- matrix_write_char(matrix, c);
- ++data;
- }
}
-void iota_gfx_write_P(const char *data) {
- matrix_write_P(&display, data);
-}
+void iota_gfx_write_P(const char *data) { matrix_write_P(&display, data); }
void matrix_clear(struct CharacterMatrix *matrix) {
- memset(matrix->display, ' ', sizeof(matrix->display));
- matrix->cursor = &matrix->display[0][0];
- matrix->dirty = true;
+ memset(matrix->display, ' ', sizeof(matrix->display));
+ matrix->cursor = &matrix->display[0][0];
+ matrix->dirty = true;
}
-void iota_gfx_clear_screen(void) {
- matrix_clear(&display);
-}
+void iota_gfx_clear_screen(void) { matrix_clear(&display); }
void matrix_render(struct CharacterMatrix *matrix) {
- last_flush = timer_read();
- iota_gfx_on();
-#if DEBUG_TO_SCREEN
- ++displaying;
-#endif
+ last_flush = timer_read();
+ iota_gfx_on();
+# if DEBUG_TO_SCREEN
+ ++displaying;
+# endif
+
+ // Move to the home position
+ send_cmd3(PageAddr, 0, MatrixRows - 1);
+ send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
+
+ if (i2c_start_write(SSD1306_ADDRESS)) {
+ goto done;
+ }
+ if (i2c_master_write(0x40)) {
+ // Data mode
+ goto done;
+ }
+
+ for (uint8_t row = 0; row < MatrixRows; ++row) {
+ for (uint8_t col = 0; col < MatrixCols; ++col) {
+ const uint8_t *glyph = font + (matrix->display[row][col] * (FontWidth - 1));
+
+ for (uint8_t glyphCol = 0; glyphCol < FontWidth - 1; ++glyphCol) {
+ uint8_t colBits = pgm_read_byte(glyph + glyphCol);
+ i2c_master_write(colBits);
+ }
- // Move to the home position
- send_cmd3(PageAddr, 0, MatrixRows - 1);
- send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
-
- if (i2c_start_write(SSD1306_ADDRESS)) {
- goto done;
- }
- if (i2c_master_write(0x40)) {
- // Data mode
- goto done;
- }
-
- for (uint8_t row = 0; row < MatrixRows; ++row) {
- for (uint8_t col = 0; col < MatrixCols; ++col) {
- const uint8_t *glyph = font + (matrix->display[row][col] * (FontWidth - 1));
-
- for (uint8_t glyphCol = 0; glyphCol < FontWidth - 1; ++glyphCol) {
- uint8_t colBits = pgm_read_byte(glyph + glyphCol);
- i2c_master_write(colBits);
- }
-
- // 1 column of space between chars (it's not included in the glyph)
- i2c_master_write(0);
+ // 1 column of space between chars (it's not included in the glyph)
+ i2c_master_write(0);
+ }
}
- }
- matrix->dirty = false;
+ matrix->dirty = false;
done:
- i2c_master_stop();
-#if DEBUG_TO_SCREEN
- --displaying;
-#endif
+ i2c_master_stop();
+# if DEBUG_TO_SCREEN
+ --displaying;
+# endif
}
-void iota_gfx_flush(void) {
- matrix_render(&display);
-}
+void iota_gfx_flush(void) { matrix_render(&display); }
-__attribute__ ((weak))
-void iota_gfx_task_user(void) {
-}
+__attribute__((weak)) void iota_gfx_task_user(void) {}
void iota_gfx_task(void) {
- iota_gfx_task_user();
+ iota_gfx_task_user();
- if (display.dirty) {
- iota_gfx_flush();
- }
+ if (display.dirty) {
+ iota_gfx_flush();
+ }
- if (timer_elapsed(last_flush) > ScreenOffInterval) {
- iota_gfx_off();
- }
+ if (timer_elapsed(last_flush) > ScreenOffInterval) {
+ iota_gfx_off();
+ }
}
#endif
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