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drivers: ssd1306: Write data from any coordinate

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Support write data from any coordinate.
ssd1306 can work with lvgl

Signed-off-by: Frank Li <lgl88911@163.com>
This commit is contained in:
Frank Li 2019-08-31 21:09:09 +08:00 committed by Carles Cufí
parent a28eba9897
commit a55620e281
1 changed files with 13 additions and 8 deletions
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21
drivers/display/ssd1306.c
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@ -238,14 +238,14 @@ int ssd1306_write(const struct device *dev, const u16_t x, const u16_t y,
return -1;
}
if (x != 0U && y != 0U) {
#if defined(CONFIG_SSD1306_DEFAULT)
struct ssd1306_data *driver = dev->driver_data;
if ((y & 0x7) != 0U) {
LOG_ERR("Unsupported origin");
return -1;
}
#if defined(CONFIG_SSD1306_DEFAULT)
struct ssd1306_data *driver = dev->driver_data;
u8_t cmd_buf[] = {
SSD1306_CONTROL_BYTE_CMD,
SSD1306_SET_MEM_ADDRESSING_MODE,
@ -254,15 +254,15 @@ int ssd1306_write(const struct device *dev, const u16_t x, const u16_t y,
SSD1306_CONTROL_BYTE_CMD,
SSD1306_SET_COLUMN_ADDRESS,
SSD1306_CONTROL_BYTE_CMD,
0,
x,
SSD1306_CONTROL_BYTE_CMD,
(SSD1306_PANEL_NUMOF_COLUMS - 1),
(x + desc->width - 1),
SSD1306_CONTROL_BYTE_CMD,
SSD1306_SET_PAGE_ADDRESS,
SSD1306_CONTROL_BYTE_CMD,
0,
y/8,
SSD1306_CONTROL_LAST_BYTE_CMD,
(SSD1306_PANEL_NUMOF_PAGES - 1)
((y + desc->height)/8 - 1)
};
if (i2c_write(driver->i2c, cmd_buf, sizeof(cmd_buf),
@ -276,6 +276,11 @@ int ssd1306_write(const struct device *dev, const u16_t x, const u16_t y,
(u8_t *)buf, desc->buf_size);
#elif defined(CONFIG_SSD1306_SH1106_COMPATIBLE)
if (x != 0U && y != 0U) {
LOG_ERR("Unsupported origin");
return -1;
}
if (desc->buf_size !=
(SSD1306_PANEL_NUMOF_PAGES * DT_INST_0_SOLOMON_SSD1306FB_WIDTH)) {
return -1;