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OLED driver function to set pixels (#9713)

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* Add a function to set individual pixels

* Add documentation for oled_write_pixel

* use smaller data type for oled_write_pixel

* Fix boundary check edge case

* Update oled_write_pixel doc

Co-authored-by: Ryan <fauxpark@gmail.com>

Co-authored-by: Ryan <fauxpark@gmail.com>
This commit is contained in:
Gautham Yerroju 2020-07-15 22:48:04 -07:00 committed by GitHub
parent 08b405e1e9
commit 92d0a71af7
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3 changed files with 21 additions and 0 deletions
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4
docs/feature_oled_driver.md
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@ -247,6 +247,10 @@ void oled_write_raw_byte(const char data, uint16_t index);
// Writes a PROGMEM string to the buffer at current cursor position
void oled_write_raw_P(const char *data, uint16_t size);
// Sets a specific pixel on or off
// Coordinates start at top-left and go right and down for positive x and y
void oled_write_pixel(uint8_t x, uint8_t y, bool on);
// Can be used to manually turn on the screen if it is off
// Returns true if the screen was on or turns on
bool oled_on(void);

13
drivers/oled/oled_driver.c
View file

@ -462,6 +462,19 @@ void oled_write_raw(const char *data, uint16_t size) {
}
}
void oled_write_pixel(uint8_t x, uint8_t y, bool on) {
if (x >= OLED_DISPLAY_WIDTH || y >= OLED_DISPLAY_HEIGHT) {
return;
}
uint16_t index = x + (y / 8) * OLED_DISPLAY_WIDTH;
if (on) {
oled_buffer[index] |= (1 << (y % 8));
} else {
oled_buffer[index] &= ~(1 << (y % 8));
}
oled_dirty |= (1 << (index / OLED_BLOCK_SIZE));
}
#if defined(__AVR__)
void oled_write_P(const char *data, bool invert) {
uint8_t c = pgm_read_byte(data);

4
drivers/oled/oled_driver.h
View file

@ -206,6 +206,10 @@ void oled_pan(bool left);
void oled_write_raw(const char *data, uint16_t size);
void oled_write_raw_byte(const char data, uint16_t index);
// Sets a specific pixel on or off
// Coordinates start at top-left and go right and down for positive x and y
void oled_write_pixel(uint8_t x, uint8_t y, bool on);
#if defined(__AVR__)
// Writes a PROGMEM string to the buffer at current cursor position
// Advances the cursor while writing, inverts the pixels if true