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SSD1306: Add helper functions

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This commit is contained in:
C47D 2021-01-17 00:10:12 -06:00
parent ece77252c8
commit a100162d40
1 changed files with 60 additions and 43 deletions
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101
lvgl_tft/ssd1306.c
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@ -80,7 +80,8 @@
/**********************
* STATIC PROTOTYPES
**********************/
static uint8_t send_bytes(lv_disp_drv_t *disp_drv, void *bytes, size_t bytes_len);
static uint8_t send_colors(lv_disp_drv_t *disp_drv, void *color_buffer, size_t buffer_len);
/**********************
* STATIC VARIABLES
**********************/
@ -154,56 +155,35 @@ void ssd1306_set_px_cb(lv_disp_drv_t * disp_drv, uint8_t * buf, lv_coord_t buf_w
void ssd1306_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
uint8_t row1 = 0, row2 = 0;
i2c_cmd_handle_t cmd;
ESP_LOGI(TAG, "X1: %d, X2: %d, Y1: %d, Y2: %d",
area->x1, area->x2, area->y1, area->y2);
// Divide by 8
row1 = area->y1 >> 3;
row2 = area->y2 >> 3;
/* Divide by 8 */
uint8_t row1 = area->y1 >> 3;
uint8_t row2 = area->y2 >> 3;
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
uint8_t conf[] = {
OLED_CONTROL_BYTE_CMD_STREAM,
OLED_CMD_SET_MEMORY_ADDR_MODE,
0x00,
OLED_CMD_SET_COLUMN_RANGE,
(uint8_t) area->x1,
(uint8_t) area->x2,
OLED_CMD_SET_PAGE_RANGE,
row1,
row2,
};
i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_CMD_STREAM, true);
i2c_master_write_byte(cmd, OLED_CMD_SET_MEMORY_ADDR_MODE, true);
i2c_master_write_byte(cmd, 0x00, true);
i2c_master_write_byte(cmd, OLED_CMD_SET_COLUMN_RANGE, true);
i2c_master_write_byte(cmd, area->x1, true);
i2c_master_write_byte(cmd, area->x2, true);
i2c_master_write_byte(cmd, OLED_CMD_SET_PAGE_RANGE, true);
i2c_master_write_byte(cmd, row1, true);
i2c_master_write_byte(cmd, row2, true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(DISP_I2C_PORT, cmd, 10/portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_DATA_STREAM, true);
i2c_master_write(cmd, (uint8_t *)color_p, OLED_COLUMNS * (1+row2-row1), true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(I2C_NUM_0, cmd, 10/portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
send_bytes(disp_drv, conf, sizeof conf);
send_colors(disp_drv, color_p, OLED_COLUMNS * (1 + row2 - row1));
lv_disp_flush_ready(disp_drv);
}
// workaround: always send complete size display buffer, no partial update
void ssd1306_rounder(lv_disp_drv_t * disp_drv, lv_area_t *area)
{
// area->y1 = (area->y1 & (~0x7));
// area->y2 = (area->y2 & (~0x7)) + 7;
uint8_t hor_max = disp_drv->hor_res;
uint8_t ver_max = disp_drv->ver_res;
area->x1 = 0;
area->y1 = 0;
area->x2 = hor_max - 1;
area->y2 = ver_max - 1;
area->x1 = area->x1 & ~(0x07);
area->x2 = area->x2 | 0x07;
}
void ssd1306_sleep_in()
@ -246,4 +226,41 @@ void ssd1306_sleep_out()
/**********************
* STATIC FUNCTIONS
**********************/
static uint8_t send_bytes(lv_disp_drv_t *disp_drv, void *bytes, size_t bytes_len)
{
(void) disp_drv;
uint8_t *data = (uint8_t *) bytes;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
for (size_t idx = 0; idx < bytes_len; idx++) {
i2c_master_write_byte(cmd, data[idx], true);
}
i2c_master_stop(cmd);
i2c_master_cmd_begin(DISP_I2C_PORT, cmd, 10 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return 0;
}
static uint8_t send_colors(lv_disp_drv_t *disp_drv, void *color_buffer, size_t buffer_len)
{
(void) disp_drv;
i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd);
i2c_master_write_byte(cmd, (OLED_I2C_ADDRESS << 1) | I2C_MASTER_WRITE, true);
i2c_master_write_byte(cmd, OLED_CONTROL_BYTE_DATA_STREAM, true);
i2c_master_write(cmd, (uint8_t *) color_buffer, buffer_len, true);
i2c_master_stop(cmd);
i2c_master_cmd_begin(DISP_I2C_PORT, cmd, 10 / portTICK_PERIOD_MS);
i2c_cmd_link_delete(cmd);
return 0;
}