diff options
Diffstat (limited to 'platforms/avr/drivers/ssd1306.c')
| -rw-r--r-- | platforms/avr/drivers/ssd1306.c | 329 |
1 files changed, 0 insertions, 329 deletions
diff --git a/platforms/avr/drivers/ssd1306.c b/platforms/avr/drivers/ssd1306.c deleted file mode 100644 index 7afbc09f00..0000000000 --- a/platforms/avr/drivers/ssd1306.c +++ /dev/null @@ -1,329 +0,0 @@ -#ifdef SSD1306OLED - -# include "ssd1306.h" -# include "i2c.h" -# include <string.h> -# include "print.h" -# include "glcdfont.c" -# ifdef PROTOCOL_LUFA -# include "lufa.h" -# endif -# include "sendchar.h" -# include "timer.h" - -struct CharacterMatrix display; - -// 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 - -// static uint16_t last_battery_update; -// static uint32_t vbat; -//#define BatteryUpdateInterval 10000 /* milliseconds */ -# define ScreenOffInterval 300000 /* milliseconds */ -# if DEBUG_TO_SCREEN -static uint8_t displaying; -# endif -static uint16_t last_flush; - -// Write command sequence. -// Returns true on success. -static inline bool _send_cmd1(uint8_t cmd) { - bool res = false; - - 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"); - - goto done; - } - - if (i2c_master_write(cmd)) { - xprintf("failed to write command %d\n", cmd); - goto done; - } - res = true; -done: - 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); -} - -// 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); -} - -# 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); - } - } - - display.dirty = false; - -done: - i2c_master_stop(); -} - -# if DEBUG_TO_SCREEN -# undef sendchar -static int8_t capture_sendchar(uint8_t c) { - sendchar(c); - iota_gfx_write_char(c); - - if (!displaying) { - iota_gfx_flush(); - } - return 0; -} -# endif - -bool iota_gfx_init(void) { - bool success = false; - - send_cmd1(DisplayOff); - send_cmd2(SetDisplayClockDiv, 0x80); - send_cmd2(SetMultiPlex, DisplayHeight - 1); - - send_cmd2(SetDisplayOffset, 0); - - 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 - - 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 - - clear_display(); - - success = true; - - iota_gfx_flush(); - -# if DEBUG_TO_SCREEN - print_set_sendchar(capture_sendchar); -# endif - -done: - return success; -} - -bool iota_gfx_off(void) { - bool success = false; - - send_cmd1(DisplayOff); - success = true; - -done: - return success; -} - -bool iota_gfx_on(void) { - bool success = false; - - send_cmd1(DisplayOn); - success = true; - -done: - 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); - } -} - -void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) { - 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; - - while (cursor_col++ < MatrixCols) { - matrix_write_char_inner(matrix, ' '); - } - return; - } - - matrix_write_char_inner(matrix, 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; - } -} - -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; - } - matrix_write_char(matrix, c); - ++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; -} - -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 - - // 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); - } - } - - matrix->dirty = false; - -done: - i2c_master_stop(); -# if DEBUG_TO_SCREEN - --displaying; -# endif -} - -void iota_gfx_flush(void) { - matrix_render(&display); -} - -__attribute__((weak)) void iota_gfx_task_user(void) {} - -void iota_gfx_task(void) { - iota_gfx_task_user(); - - if (display.dirty) { - iota_gfx_flush(); - } - - if (timer_elapsed(last_flush) > ScreenOffInterval) { - iota_gfx_off(); - } -} -#endif |