ST7565 invert (#13237)
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3 changed files with 24 additions and 0 deletions
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@ -262,6 +262,10 @@ void st7565_task(void);
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// Called at the start of st7565_task, weak function overridable by the user
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void st7565_task_user(void);
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// Inverts the display
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// Returns true if the screen was or is inverted
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bool st7565_invert(bool invert);
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// Returns the maximum number of characters that will fit on a line
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uint8_t st7565_max_chars(void);
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@ -31,6 +31,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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#define DISPLAY_ALL_ON 0xA5
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#define DISPLAY_ALL_ON_RESUME 0xA4
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#define NORMAL_DISPLAY 0xA6
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#define INVERT_DISPLAY 0xA7
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#define DISPLAY_ON 0xAF
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#define DISPLAY_OFF 0xAE
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#define NOP 0xE3
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@ -72,6 +73,7 @@ uint8_t * st7565_cursor;
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ST7565_BLOCK_TYPE st7565_dirty = 0;
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bool st7565_initialized = false;
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bool st7565_active = false;
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bool st7565_inverted = false;
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display_rotation_t st7565_rotation = DISPLAY_ROTATION_0;
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#if ST7565_TIMEOUT > 0
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uint32_t st7565_timeout;
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@ -429,6 +431,20 @@ __attribute__((weak)) void st7565_off_user(void) {}
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bool st7565_is_on(void) { return st7565_active; }
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bool st7565_invert(bool invert) {
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if (!st7565_initialized) {
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return st7565_inverted;
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}
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if (invert != st7565_inverted) {
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spi_start(ST7565_SS_PIN, false, 0, ST7565_SPI_CLK_DIVISOR);
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st7565_send_cmd(invert ? INVERT_DISPLAY : NORMAL_DISPLAY);
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spi_stop();
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st7565_inverted = invert;
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}
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return st7565_inverted;
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}
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uint8_t st7565_max_chars(void) { return ST7565_DISPLAY_WIDTH / ST7565_FONT_WIDTH; }
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uint8_t st7565_max_lines(void) { return ST7565_DISPLAY_HEIGHT / ST7565_FONT_HEIGHT; }
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@ -202,6 +202,10 @@ void st7565_task(void);
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// Called at the start of st7565_task, weak function overridable by the user
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void st7565_task_user(void);
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// Inverts the display
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// Returns true if the screen was or is inverted
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bool st7565_invert(bool invert);
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// Returns the maximum number of characters that will fit on a line
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uint8_t st7565_max_chars(void);
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