zenermerps/lvgl_esp32_drivers
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Add Schmitt SPI display driver

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This commit is contained in:
Andreas Mieke 2023-12-30 03:47:03 +01:00
parent 26fe6e7703
commit 8592cb9d29
9 changed files with 72 additions and 3 deletions
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2
CMakeLists.txt
View file

@ -44,6 +44,8 @@ elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C)
list(APPEND SOURCES "lvgl_tft/ili9163c.c")
elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
list(APPEND SOURCES "lvgl_tft/pcd8544.c")
elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
list(APPEND SOURCES "lvgl_tft/schmitt.c")
else()
message(WARNING "LVGL ESP32 drivers: Display controller not defined.")
endif()

2
lvgl_helpers.c
View file

@ -154,7 +154,7 @@ bool lvgl_spi_driver_init(int host,
int dma_channel,
int quadwp_pin, int quadhd_pin)
{
assert((0 <= host) && (SPI_HOST_MAX > host));
assert((0 <= host) && (3 > host));
const char *spi_names[] = {
"SPI1_HOST", "SPI2_HOST", "SPI3_HOST"
};

2
lvgl_helpers.h
View file

@ -78,6 +78,8 @@ extern "C" {
#define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
#define DISP_BUF_SIZE (LV_HOR_RES_MAX * (LV_VER_RES_MAX / 8))
#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
#define DISP_BUF_SIZE (LV_HOR_RES_MAX * LV_VER_RES_MAX)
#else
#error "No display controller selected"
#endif

8
lvgl_spi_conf.h
View file

@ -114,7 +114,11 @@ extern "C" {
/**********************
* TYPEDEFS
**********************/
#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9481) || \
#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
#define SPI_BUS_MAX_TRANSFER_SZ (DISP_BUF_SIZE * 4)
#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9481) || \
defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9488)
#define SPI_BUS_MAX_TRANSFER_SZ (DISP_BUF_SIZE * 3)
@ -161,7 +165,7 @@ extern "C" {
#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
#define SPI_TFT_CLOCK_SPEED_HZ (4*1000*1000)
#else
#define SPI_TFT_CLOCK_SPEED_HZ (40*1000*1000)
#define SPI_TFT_CLOCK_SPEED_HZ (5*1000*1000) // Set to 40 later
#endif
#endif

8
lvgl_tft/Kconfig
View file

@ -178,6 +178,10 @@ menu "LVGL TFT Display controller"
bool
help
PCD8544 display controller (Nokia 3110/5110)
config LV_TFT_DISPLAY_CONTROLLER_SCHMITT
bool
help
Schmitt's display controller
# Display controller communication protocol
#
# This symbols define the communication protocol used by the
@ -349,6 +353,10 @@ menu "LVGL TFT Display controller"
select LV_TFT_DISPLAY_CONTROLLER_PCD8544
select LV_TFT_DISPLAY_PROTOCOL_SPI
select LV_TFT_DISPLAY_MONOCHROME
config LV_TFT_DISPLAY_USER_CONTROLLER_SCHMITT
bool "SCHMITT"
select LV_TFT_DISPLAY_CONTROLLER_SCHMITT
select LV_TFT_DISPLAY_PROTOCOL_SPI
endchoice
config CUSTOM_DISPLAY_BUFFER_SIZE

4
lvgl_tft/disp_driver.c
View file

@ -45,6 +45,8 @@ void *disp_driver_init(void)
ili9163c_init();
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
pcd8544_init();
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
schmitt_init();
#endif
// We still use menuconfig for these settings
@ -111,6 +113,8 @@ void disp_driver_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t *
ili9163c_flush(drv, area, color_map);
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
pcd8544_flush(drv, area, color_map);
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
schmitt_flush(drv, area, color_map);
#endif
}

2
lvgl_tft/disp_driver.h
View file

@ -54,6 +54,8 @@ extern "C" {
#include "ili9163c.h"
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
#include "pcd8544.h"
#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
#include "schmitt.h"
#endif
/*********************

27
lvgl_tft/schmitt.c Normal file
View file

@ -0,0 +1,27 @@
#include <stdio.h>
#include "schmitt.h"
#include "disp_spi.h"
#include "esp_log.h"
static const char* TAG = "SCHMITT_DIS";
void schmitt_init(void)
{
disp_spi_acquire();
// Do things
ESP_LOGI(TAG, "schmitt_init() called");
disp_spi_release();
}
void schmitt_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
{
disp_spi_acquire();
// Do things
uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
disp_spi_send_colors(color_map, size * 4);
ESP_LOGI(TAG, "schmitt_flush() called");
disp_spi_release();
lv_disp_flush_ready(drv);
}

20
lvgl_tft/schmitt.h Normal file
View file

@ -0,0 +1,20 @@
#ifndef SCHMITT_H_
#define SCHMITT_H_
#include <stdint.h>
#ifdef LV_LVGL_H_INCLUDE_SIMPLE
#include "lvgl.h"
#else
#include "lvgl/lvgl.h"
#endif
#include "../lvgl_helpers.h"
#define LV_HOR_RES_MAX 64
#define LV_VER_RES_MAX 64
void schmitt_init(void);
void schmitt_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map);
#endif /* SCHMITT_H_ */