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First quick'n'dirty integration of LittleVGL. Needs some cleaning.

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This commit is contained in:
JF
2020-02-08 18:01:02 +01:00
parent e737fb0499
commit a97faf8e9e
12 changed files with 1015 additions and 31 deletions
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20
src/DisplayApp/DisplayApp.cpp
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@@ -11,6 +11,8 @@
#include <drivers/Cst816s.h>
#include <chrono>
#include <string>
#include <lvgl/lvgl.h>
#include "lv_port_disp.h"
using namespace Pinetime::Applications;
@@ -26,13 +28,14 @@ DisplayApp::DisplayApp(Pinetime::Drivers::St7789& lcd,
batteryController{batteryController},
bleController{bleController},
dateTimeController{dateTimeController},
clockScreen{gfx} {
clockScreen{gfx},
messageScreen{gfx}{
msgQueue = xQueueCreate(queueSize, itemSize);
currentScreen = &clockScreen;
currentScreen = &messageScreen;
}
void DisplayApp::Start() {
if (pdPASS != xTaskCreate(DisplayApp::Process, "DisplayApp", 256, this, 0, &taskHandle))
if (pdPASS != xTaskCreate(DisplayApp::Process, "DisplayApp", 1024, this, 0, &taskHandle))
APP_ERROR_HANDLER(NRF_ERROR_NO_MEM);
}
@@ -40,7 +43,11 @@ void DisplayApp::Process(void *instance) {
auto *app = static_cast<DisplayApp *>(instance);
NRF_LOG_INFO("DisplayApp task started!");
app->InitHw();
lv_init();
lv_port_disp_init();
while (1) {
lv_task_handler();
app->Refresh();
}
}
@@ -53,7 +60,7 @@ void DisplayApp::InitHw() {
nrf_gpio_pin_clear(pinLcdBacklight2);
nrf_gpio_pin_clear(pinLcdBacklight3);
currentScreen->Refresh(true);
}
uint32_t acc = 0;
@@ -112,11 +119,14 @@ void DisplayApp::Refresh() {
}
}
bool first = true;
void DisplayApp::RunningState() {
clockScreen.SetCurrentDateTime(dateTimeController.CurrentDateTime());
if(currentScreen != nullptr) {
currentScreen->Refresh(false);
currentScreen->Refresh(first);
first = false;
}
}

1
src/DisplayApp/DisplayApp.h
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@@ -58,6 +58,7 @@ namespace Pinetime {
void OnTouchEvent();
Screens::Clock clockScreen;
Screens::Message messageScreen;
Screens::Screen* currentScreen = nullptr;
static constexpr uint8_t pinLcdBacklight1 = 14;
static constexpr uint8_t pinLcdBacklight2 = 22;

11
src/DisplayApp/Screens/Message.cpp
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@@ -2,13 +2,20 @@
#include <libs/date/includes/date/date.h>
#include <Components/DateTime/DateTimeController.h>
#include <Version.h>
#include <libs/lvgl/src/lv_core/lv_obj.h>
#include <libs/lvgl/lvgl.h>
#include "Message.h"
using namespace Pinetime::Applications::Screens;
lv_obj_t * label;
void Message::Refresh(bool fullRefresh) {
if(fullRefresh) {
gfx.FillRectangle(0,0,240,240,0xffff);
gfx.DrawString(120, 10, 0x5555, "COUCOU", &smallFont, false);
lv_obj_t * btn = lv_btn_create(lv_scr_act(), NULL); /*Add a button the current screen*/
lv_obj_set_pos(btn, 10, 10); /*Set its position*/
lv_obj_set_size(btn, 100, 50); /*Set its size*/
label = lv_label_create(btn, NULL); /*Add a label to the button*/
lv_label_set_text(label, "Button"); /*Set the labels text*/
}
}

206
src/DisplayApp/lv_port_disp.cpp Normal file
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@@ -0,0 +1,206 @@
/**
* @file lv_port_disp_templ.c
*
*/
/*Copy this file as "lv_port_disp.c" and set this value to "1" to enable content*/
#if 1
/*********************
* INCLUDES
*********************/
#include <FreeRTOS.h>
#include <projdefs.h>
#include <task.h>
#include "lv_port_disp.h"
#include "../drivers/St7789.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void disp_init(void);
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);
#if LV_USE_GPU
static void gpu_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
static void gpu_fill(lv_color_t * dest, uint32_t length, lv_color_t color);
#endif
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void lv_port_disp_init(void)
{
/*-------------------------
* Initialize your display
* -----------------------*/
disp_init();
/*-----------------------------
* Create a buffer for drawing
*----------------------------*/
/* LittlevGL requires a buffer where it draws the objects. The buffer's has to be greater than 1 display row
*
* There are three buffering configurations:
* 1. Create ONE buffer with some rows:
* LittlevGL will draw the display's content here and writes it to your display
*
* 2. Create TWO buffer with some rows:
* LittlevGL will draw the display's content to a buffer and writes it your display.
* You should use DMA to write the buffer's content to the display.
* It will enable LittlevGL to draw the next part of the screen to the other buffer while
* the data is being sent form the first buffer. It makes rendering and flushing parallel.
*
* 3. Create TWO screen-sized buffer:
* Similar to 2) but the buffer have to be screen sized. When LittlevGL is ready it will give the
* whole frame to display. This way you only need to change the frame buffer's address instead of
* copying the pixels.
* */
/* Example for 1) */
#if 0
static lv_disp_buf_t disp_buf_1;
static lv_color_t buf1_1[LV_HOR_RES_MAX * 10]; /*A buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_1, buf1_1, NULL, LV_HOR_RES_MAX * 10); /*Initialize the display buffer*/
#endif
/* Example for 2) */
static lv_disp_buf_t disp_buf_2;
static lv_color_t buf2_1[LV_HOR_RES_MAX * 2]; /*A buffer for 10 rows*/
static lv_color_t buf2_2[LV_HOR_RES_MAX * 2]; /*An other buffer for 10 rows*/
lv_disp_buf_init(&disp_buf_2, buf2_1, buf2_2, LV_HOR_RES_MAX * 2); /*Initialize the display buffer*/
/* Example for 3) */
#if 0
static lv_disp_buf_t disp_buf_3;
static lv_color_t buf3_1[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*A screen sized buffer*/
static lv_color_t buf3_2[LV_HOR_RES_MAX * LV_VER_RES_MAX]; /*An other screen sized buffer*/
lv_disp_buf_init(&disp_buf_3, buf3_1, buf3_2, LV_HOR_RES_MAX * LV_VER_RES_MAX); /*Initialize the display buffer*/
#endif
/*-----------------------------------
* Register the display in LittlevGL
*----------------------------------*/
lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
lv_disp_drv_init(&disp_drv); /*Basic initialization*/
/*Set up the functions to access to your display*/
/*Set the resolution of the display*/
disp_drv.hor_res = 240;
disp_drv.ver_res = 240;
/*Used to copy the buffer's content to the display*/
disp_drv.flush_cb = disp_flush;
/*Set a display buffer*/
disp_drv.buffer = &disp_buf_2;
#if LV_USE_GPU
/*Optionally add functions to access the GPU. (Only in buffered mode, LV_VDB_SIZE != 0)*/
/*Blend two color array using opacity*/
disp_drv.gpu_blend = gpu_blend;
/*Fill a memory array with a color*/
disp_drv.gpu_fill = gpu_fill;
#endif
/*Finally register the driver*/
lv_disp_drv_register(&disp_drv);
}
/**********************
* STATIC FUNCTIONS
**********************/
/* Initialize your display and the required peripherals. */
extern Pinetime::Drivers::St7789* ptrLcd;
static void disp_init(void)
{
/*You code here*/
}
void NotifyEndOfTransfert(TaskHandle_t task) {
if(task != nullptr) {
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
vTaskNotifyGiveFromISR(task, &xHigherPriorityTaskWoken);
portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
}
}
/* Flush the content of the internal buffer the specific area on the display
* You can use DMA or any hardware acceleration to do this operation in the background but
* 'lv_disp_flush_ready()' has to be called when finished. */
static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
/*The most simple case (but also the slowest) to put all pixels to the screen one-by-one*/
auto x = area->x1;
auto y = area->y1;
auto width = (area->x2-area->x1)+1;
auto height = (area->y2-area->y1)+1;
ptrLcd->BeginDrawBuffer(x, y, width, height);
ptrLcd->NextDrawBuffer(reinterpret_cast<const uint8_t *>(color_p), width * height*2) ;
ulTaskNotifyTake(pdTRUE, 500);
/* IMPORTANT!!!
* Inform the graphics library that you are ready with the flushing*/
lv_disp_flush_ready(disp_drv);
}
/*OPTIONAL: GPU INTERFACE*/
#if LV_USE_GPU
/* If your MCU has hardware accelerator (GPU) then you can use it to blend to memories using opacity
* It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)*/
static void gpu_blend(lv_disp_drv_t * disp_drv, lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa)
{
/*It's an example code which should be done by your GPU*/
uint32_t i;
for(i = 0; i < length; i++) {
dest[i] = lv_color_mix(dest[i], src[i], opa);
}
}
/* If your MCU has hardware accelerator (GPU) then you can use it to fill a memory with a color
* It can be used only in buffered mode (LV_VDB_SIZE != 0 in lv_conf.h)*/
static void gpu_fill_cb(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
const lv_area_t * fill_area, lv_color_t color);
{
/*It's an example code which should be done by your GPU*/
uint32_t x, y;
dest_buf += dest_width * fill_area->y1; /*Go to the first line*/
for(y = fill_area->y1; y < fill_area->y2; y++) {
for(x = fill_area->x1; x < fill_area->x2; x++) {
dest_buf[x] = color;
}
dest_buf+=dest_width; /*Go to the next line*/
}
}
#endif /*LV_USE_GPU*/
#else /* Enable this file at the top */
/* This dummy typedef exists purely to silence -Wpedantic. */
typedef int keep_pedantic_happy;
#endif

45
src/DisplayApp/lv_port_disp.h Normal file
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@@ -0,0 +1,45 @@
/**
* @file lv_port_disp_templ.h
*
*/
/*Copy this file as "lv_port_disp.h" and set this value to "1" to enable content*/
#if 1
#ifndef LV_PORT_DISP_TEMPL_H
#define LV_PORT_DISP_TEMPL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lvgl/lvgl.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
void lv_port_disp_init(void);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_PORT_DISP_TEMPL_H*/
#endif /*Disable/Enable content*/