zener/lvgl_esp32_drivers
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Added PCD8544 to readme, addressed PR comments

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Matthias Ringwald 2021-11-18 08:58:04 +01:00 • committed by Carlos Diaz
parent 37a4d3a4e6
commit f3f6ba6470
3 changed files with 27 additions and 24 deletions
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8
lvgl_tft/pcd8544.c
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@ -116,9 +116,12 @@ void pcd8544_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t
uint8_t * buf = (uint8_t *) color_map;
// Check if the whole frame buffer can be sent in a single SPI transaction
if ((area->x1 == 0) && (area->y1 == 0) && (area->x2 == (disp_drv->hor_res - 1)) && (area->y2 == (disp_drv->ver_res - 1))){
// optimize flush of complete frame buffer in a single SPI transaction
// send complete frame buffer at once.
// NOTE: disp_spi_send_colors triggers lv_disp_flush_ready
pcd8544_send_cmd(0x40); /* set Y address */
pcd8544_send_cmd(0x80); /* set X address */
@ -134,13 +137,12 @@ void pcd8544_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t
uint16_t bank;
uint16_t cols_to_update = area->x2 - area->x1 + 1;
for (bank = bank_start ; bank <= bank_end ; bank++ ){
pcd8544_send_cmd(0x40 | bank ); /* set Y address */
pcd8544_send_cmd(0x40 | bank ); /* set Y address */
pcd8544_send_cmd(0x80 | area->x1 ); /* set X address */
uint16_t offset = bank * disp_drv->hor_res + area->x1;
pcd8544_send_data(&buf[offset], cols_to_update);
}
lv_disp_flush_ready(disp_drv);
}
}