Preprocess lvgl.h on Makefile, and allow overriding macros with LV_CFLAGS. Build and register ESP32 driver and ESP32-ILI9341 driver in ESP32 Makefile. Update lv-bindings sub module. Updated README with make command line and ESP32 example.
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Amir Gonnen
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README.md
28
README.md
@ -15,8 +15,13 @@ Please set `ESPIDF` parameter for the esp-idf install dir.
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It needs to match Micropython expected esp-idf, otherwise a warning will be displayed (and build will probably fail)
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For more details refer to [Setting up the toolchain and ESP-IDF](https://github.com/littlevgl/lv_micropython/blob/master/ports/esp32/README.md#setting-up-the-toolchain-and-esp-idf)
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For example:
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`make -C ports/esp32/ ESPIDF=~/esp/projects/lv_mpy_deps/esp-idf`
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When using IL9341 driver, the width height and color need to be set to match ILI9341. This can be done from the command line.
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Here is the command to build ESP32 + LittlevGL which is compatible with ILI9341 driver:
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`make -C ports/esp32/ ESPIDF=~/esp/projects/lv_mpy_deps/esp-idf -j4 LV_CFLAGS="-DLV_HOR_RES=240 -DLV_VER_RES=320 -DLV_COLOR_DEPTH=16" deploy`
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This make command will create ESP32 port of Micropython, and will try to deploy it through USB-UART bridge.
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`LV_CFLAGS` are used to override width height and color, for ILI9341 compatibility.
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## Super Simple Example
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@ -52,6 +57,25 @@ indev_drv.read = SDL.mouse_read;
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lv.indev_drv_register(indev_drv);
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```
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Here is an alternative example, for registering ILI9341 drivers on Micropython ESP32 port:
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```python
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# Import ESP32 driver (advnaces tick count and schedules tasks)
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import lvesp32
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# Import ILI9341, initialize it and register it to LittlevGL
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import ILI9341 as ili
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d = ili.display(miso=5, mosi=18, clk=19, cs=13, dc=12, rst=4, backlight=2)
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d.init()
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disp_drv = lv.disp_drv_t()
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lv.disp_drv_init(disp_drv)
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disp_drv.disp_flush = d.flush
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disp_drv.disp_fill = d.fill
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lv.disp_drv_register(disp_drv)
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```
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Now you can create the GUI itself
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```python
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@ -1 +1 @@
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Subproject commit c60795596686072f0b28e794af6b1685115cbf86
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Subproject commit 6f689638a714c46fa63232f2b98e1ed079664044
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@ -39,8 +39,13 @@
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*===================*/
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/* Horizontal and vertical resolution of the library.*/
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#ifndef LV_HOR_RES
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#define LV_HOR_RES (440)
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#endif
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#ifndef LV_VER_RES
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#define LV_VER_RES (340)
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#endif
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/* Dot Per Inch: used to initialize default sizes. E.g. a button with width = LV_DPI / 2 -> half inch wide
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* (Not so important, you can adjust it to modify default sizes and spaces)*/
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@ -108,7 +113,10 @@
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#define LV_INDEV_LONG_PRESS_REP_TIME 100 /*Repeated trigger period in long press [ms] */
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/*Color settings*/
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#ifndef LV_COLOR_DEPTH
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#define LV_COLOR_DEPTH 32 /*Color depth: 1/8/16/32*/
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#endif
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#define LV_COLOR_16_SWAP 0 /*Swap the 2 bytes of RGB565 color. Useful if the display has a 8 bit interface (e.g. SPI)*/
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#define LV_COLOR_SCREEN_TRANSP 0 /*1: Enable screen transparency. Useful for OSD or other overlapping GUIs. Requires ARGB8888 colors*/
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#define LV_COLOR_TRANSP LV_COLOR_LIME /*Images pixels with this color will not be drawn (with chroma keying)*/
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@ -197,6 +197,12 @@ LIB_SRC_C += \
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lib/oofatfs/option/unicode.c
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endif
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ifeq ($(MICROPY_PY_LVGL), 1)
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LIB_SRC_C += \
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lib/lv_bindings/driver/esp32/modlvesp32.c \
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lib/lv_bindings/driver/esp32/modILI9341.c
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endif
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DRIVERS_SRC_C = $(addprefix drivers/,\
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bus/softspi.c \
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dht/dht.c \
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@ -180,6 +180,8 @@ extern const struct _mp_obj_module_t mp_module_machine;
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extern const struct _mp_obj_module_t mp_module_network;
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extern const struct _mp_obj_module_t mp_module_onewire;
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extern const struct _mp_obj_module_t mp_module_lvgl;
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extern const struct _mp_obj_module_t mp_module_lvesp32;
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extern const struct _mp_obj_module_t mp_module_ILI9341;
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#define MICROPY_PORT_BUILTIN_MODULES \
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{ MP_OBJ_NEW_QSTR(MP_QSTR_esp), (mp_obj_t)&esp_module }, \
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@ -210,6 +212,8 @@ extern const struct _mp_obj_module_t mp_module_lvgl;
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{ MP_OBJ_NEW_QSTR(MP_QSTR_time), (mp_obj_t)&utime_module }, \
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{ MP_OBJ_NEW_QSTR(MP_QSTR_zlib), (mp_obj_t)&mp_module_uzlib }, \
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{ MP_OBJ_NEW_QSTR(MP_QSTR_lvgl), (mp_obj_t)&mp_module_lvgl }, \
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{ MP_OBJ_NEW_QSTR(MP_QSTR_lvesp32), (mp_obj_t)&mp_module_lvesp32 }, \
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{ MP_OBJ_NEW_QSTR(MP_QSTR_ILI9341), (mp_obj_t)&mp_module_ILI9341 }, \
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#define MP_STATE_PORT MP_STATE_VM
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5
py/py.mk
5
py/py.mk
@ -124,13 +124,16 @@ LVGL_BINDING_DIR = $(TOP)/lib/lv_bindings
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LVGL_DIR = $(LVGL_BINDING_DIR)/lvgl
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INC += -I$(LVGL_DIR) -I$(LVGL_BINDING_DIR)/include
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ALL_LVGL_SRC = $(shell find $(LVGL_DIR) -type f) $(TOP)/lib/lv_conf.h
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LVGL_PP = $(BUILD)/lvgl/lvgl.pp.c
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LVGL_MPY = $(BUILD)/lvgl/lv_mpy.c
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QSTR_GLOBAL_DEPENDENCIES += $(LVGL_MPY)
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CFLAGS_MOD += $(LV_CFLAGS)
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$(LVGL_MPY): $(ALL_LVGL_SRC) $(LVGL_BINDING_DIR)/gen/gen_mpy.py
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$(ECHO) "LVGL-GEN $@"
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$(Q)mkdir -p $(dir $@)
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$(Q)$(PYTHON) $(LVGL_BINDING_DIR)/gen/gen_mpy.py -X anim -X group -X task $(INC) -I $(LVGL_BINDING_DIR)/pycparser/utils/fake_libc_include $(LVGL_DIR)/lvgl.h > $@
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$(Q)$(CPP) $(LV_CFLAGS) $(INC) -I $(LVGL_BINDING_DIR)/pycparser/utils/fake_libc_include $(LVGL_DIR)/lvgl.h > $(LVGL_PP)
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$(Q)$(PYTHON) $(LVGL_BINDING_DIR)/gen/gen_mpy.py -X anim -X group -X task -E $(LVGL_PP) $(LVGL_DIR)/lvgl.h > $@
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CFLAGS_MOD += -Wno-unused-function
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SRC_MOD += $(subst $(TOP)/,,$(shell find $(LVGL_DIR) -type f -name "*.c") $(LVGL_MPY))
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