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Introducing Bootloader Development Kit (BDK)

Browse Source 
BDK will allow developers to use the full collection of drivers,
with limited editing, if any, for making payloads for Nintendo Switch.

Using a single source for everything will also help decoupling
Switch specific code and easily port it to other Tegra X1/X1+ platforms.
And maybe even to lower targets.

Everything is now centrilized into bdk folder.
Every module or project can utilize it by simply including it.

This is just the start and it will continue to improve.
This commit is contained in:
CTCaer
2020-06-14 15:25:21 +03:00
parent 9b1c61fbcf
commit 185526d134
386 changed files with 0 additions and 31374 deletions
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40
bdk/libs/lvgl/lv_hal/lv_hal.h Normal file
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/**
* @file hal.h
*
*/
#ifndef HAL_H
#define HAL_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_hal_disp.h"
#include "lv_hal_indev.h"
#include "lv_hal_tick.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif

8
bdk/libs/lvgl/lv_hal/lv_hal.mk Normal file
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CSRCS += lv_hal_disp.c
CSRCS += lv_hal_indev.c
CSRCS += lv_hal_tick.c
DEPPATH += --dep-path $(LVGL_DIR)/lvgl/lv_hal
VPATH += :$(LVGL_DIR)/lvgl/lv_hal
CFLAGS += "-I$(LVGL_DIR)/lvgl/lv_hal"

242
bdk/libs/lvgl/lv_hal/lv_hal_disp.c Normal file
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/**
* @file hal_disp.c
*
* @description HAL layer for display driver
*
*/
/*********************
* INCLUDES
*********************/
#include <stdint.h>
#include <stddef.h>
#include "../lv_hal/lv_hal_disp.h"
#include "../lv_misc/lv_mem.h"
#include "../lv_core/lv_obj.h"
#include "../lv_misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
# include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
static lv_disp_t * active;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize a display driver with default values.
* It is used to surly have known values in the fields ant not memory junk.
* After it you can set the fields.
* @param driver pointer to driver variable to initialize
*/
void lv_disp_drv_init(lv_disp_drv_t * driver)
{
driver->disp_fill = NULL;
driver->disp_map = NULL;
driver->disp_flush = NULL;
#if USE_LV_GPU
driver->mem_blend = NULL;
driver->mem_fill = NULL;
#endif
#if LV_VDB_SIZE
driver->vdb_wr = NULL;
#endif
}
/**
* Register an initialized display driver.
* Automatically set the first display as active.
* @param driver pointer to an initialized 'lv_disp_drv_t' variable (can be local variable)
* @return pointer to the new display or NULL on error
*/
lv_disp_t * lv_disp_drv_register(lv_disp_drv_t * driver)
{
lv_disp_t * node;
node = lv_mem_alloc(sizeof(lv_disp_t));
lv_mem_assert(node);
if(node == NULL) return NULL;
memcpy(&node->driver, driver, sizeof(lv_disp_drv_t));
node->next = NULL;
/* Set first display as active by default */
if(LV_GC_ROOT(_lv_disp_list) == NULL) {
LV_GC_ROOT(_lv_disp_list) = node;
active = node;
lv_obj_invalidate(lv_scr_act());
} else {
((lv_disp_t*)LV_GC_ROOT(_lv_disp_list))->next = node;
}
return node;
}
/**
* Set the active display
* @param disp pointer to a display (return value of 'lv_disp_register')
*/
void lv_disp_set_active(lv_disp_t * disp)
{
active = disp;
lv_obj_invalidate(lv_scr_act());
}
/**
* Get a pointer to the active display
* @return pointer to the active display
*/
lv_disp_t * lv_disp_get_active(void)
{
return active;
}
/**
* Get the next display.
* @param disp pointer to the current display. NULL to initialize.
* @return the next display or NULL if no more. Give the first display when the parameter is NULL
*/
lv_disp_t * lv_disp_next(lv_disp_t * disp)
{
if(disp == NULL) {
return LV_GC_ROOT(_lv_disp_list);
} else {
if(((lv_disp_t*)LV_GC_ROOT(_lv_disp_list))->next == NULL) return NULL;
else return ((lv_disp_t*)LV_GC_ROOT(_lv_disp_list))->next;
}
}
/**
* Write the content of the internal buffer (VDB) to the display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color_p fill color
*/
void lv_disp_fill(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t color)
{
if(active == NULL) return;
if(active->driver.disp_fill != NULL) active->driver.disp_fill(x1, y1, x2, y2, color);
}
/**
* Fill a rectangular area with a color on the active display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color_p pointer to an array of colors
*/
void lv_disp_flush(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t * color_p)
{
if(active == NULL) return;
if(active->driver.disp_flush != NULL) {
LV_LOG_TRACE("disp flush started");
active->driver.disp_flush(x1, y1, x2, y2, color_p);
LV_LOG_TRACE("disp flush ready");
} else {
LV_LOG_WARN("disp flush function registered");
}
}
/**
* Put a color map to a rectangular area on the active display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color_map pointer to an array of colors
*/
void lv_disp_map(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_map)
{
if(active == NULL) return;
if(active->driver.disp_map != NULL) active->driver.disp_map(x1, y1, x2, y2, color_map);
}
#if USE_LV_GPU
/**
* Blend pixels to a destination memory from a source memory
* In 'lv_disp_drv_t' 'mem_blend' is optional. (NULL if not available)
* @param dest a memory address. Blend 'src' here.
* @param src pointer to pixel map. Blend it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
void lv_disp_mem_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa)
{
if(active == NULL) return;
if(active->driver.mem_blend != NULL) active->driver.mem_blend(dest, src, length, opa);
}
/**
* Fill a memory with a color (GPUs may support it)
* In 'lv_disp_drv_t' 'mem_fill' is optional. (NULL if not available)
* @param dest a memory address. Copy 'src' here.
* @param src pointer to pixel map. Copy it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
void lv_disp_mem_fill(lv_color_t * dest, uint32_t length, lv_color_t color)
{
if(active == NULL) return;
if(active->driver.mem_fill != NULL) active->driver.mem_fill(dest, length, color);
}
/**
* Shows if memory blending (by GPU) is supported or not
* @return false: 'mem_blend' is not supported in the driver; true: 'mem_blend' is supported in the driver
*/
bool lv_disp_is_mem_blend_supported(void)
{
if(active == NULL) return false;
if(active->driver.mem_blend) return true;
else return false;
}
/**
* Shows if memory fill (by GPU) is supported or not
* @return false: 'mem_fill' is not supported in the drover; true: 'mem_fill' is supported in the driver
*/
bool lv_disp_is_mem_fill_supported(void)
{
if(active == NULL) return false;
if(active->driver.mem_fill) return true;
else return false;
}
#endif
/**********************
* STATIC FUNCTIONS
**********************/

173
bdk/libs/lvgl/lv_hal/lv_hal_disp.h Normal file
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/**
* @file hal_disp.h
*
* @description Display Driver HAL interface header file
*
*/
#ifndef HAL_DISP_H
#define HAL_DISP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
#include "lv_hal.h"
#include "../lv_misc/lv_color.h"
#include "../lv_misc/lv_area.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**
* Display Driver structure to be registered by HAL
*/
typedef struct _disp_drv_t {
/*Write the internal buffer (VDB) to the display. 'lv_flush_ready()' has to be called when finished*/
void (*disp_flush)(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_p);
/*Fill an area with a color on the display*/
void (*disp_fill)(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t color);
/*Write pixel map (e.g. image) to the display*/
void (*disp_map)(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_p);
/*Optional interface functions to use GPU*/
#if USE_LV_GPU
/*Blend two memories using opacity (GPU only)*/
void (*mem_blend)(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
/*Fill a memory with a color (GPU only)*/
void (*mem_fill)(lv_color_t * dest, uint32_t length, lv_color_t color);
#endif
#if LV_VDB_SIZE
/*Optional: Set a pixel in a buffer according to the requirements of the display*/
void (*vdb_wr)(uint8_t * buf, lv_coord_t buf_w, lv_coord_t x, lv_coord_t y, lv_color_t color, lv_opa_t opa);
#endif
} lv_disp_drv_t;
typedef struct _disp_t {
lv_disp_drv_t driver;
struct _disp_t *next;
} lv_disp_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize a display driver with default values.
* It is used to surly have known values in the fields ant not memory junk.
* After it you can set the fields.
* @param driver pointer to driver variable to initialize
*/
void lv_disp_drv_init(lv_disp_drv_t *driver);
/**
* Register an initialized display driver.
* Automatically set the first display as active.
* @param driver pointer to an initialized 'lv_disp_drv_t' variable (can be local variable)
* @return pointer to the new display or NULL on error
*/
lv_disp_t * lv_disp_drv_register(lv_disp_drv_t *driver);
/**
* Set the active display
* @param disp pointer to a display (return value of 'lv_disp_register')
*/
void lv_disp_set_active(lv_disp_t * disp);
/**
* Get a pointer to the active display
* @return pointer to the active display
*/
lv_disp_t * lv_disp_get_active(void);
/**
* Get the next display.
* @param disp pointer to the current display. NULL to initialize.
* @return the next display or NULL if no more. Give the first display when the parameter is NULL
*/
lv_disp_t * lv_disp_next(lv_disp_t * disp);
/**
* Fill a rectangular area with a color on the active display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color_p pointer to an array of colors
*/
void lv_disp_flush(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t *color_p);
/**
* Fill a rectangular area with a color on the active display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color fill color
*/
void lv_disp_fill(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t color);
/**
* Put a color map to a rectangular area on the active display
* @param x1 left coordinate of the rectangle
* @param x2 right coordinate of the rectangle
* @param y1 top coordinate of the rectangle
* @param y2 bottom coordinate of the rectangle
* @param color_map pointer to an array of colors
*/
void lv_disp_map(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_map);
#if USE_LV_GPU
/**
* Blend pixels to a destination memory from a source memory
* In 'lv_disp_drv_t' 'mem_blend' is optional. (NULL if not available)
* @param dest a memory address. Blend 'src' here.
* @param src pointer to pixel map. Blend it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
void lv_disp_mem_blend(lv_color_t * dest, const lv_color_t * src, uint32_t length, lv_opa_t opa);
/**
* Fill a memory with a color (GPUs may support it)
* In 'lv_disp_drv_t' 'mem_fill' is optional. (NULL if not available)
* @param dest a memory address. Copy 'src' here.
* @param src pointer to pixel map. Copy it to 'dest'.
* @param length number of pixels in 'src'
* @param opa opacity (0, LV_OPA_TRANSP: transparent ... 255, LV_OPA_COVER, fully cover)
*/
void lv_disp_mem_fill(lv_color_t * dest, uint32_t length, lv_color_t color);
/**
* Shows if memory blending (by GPU) is supported or not
* @return false: 'mem_blend' is not supported in the driver; true: 'mem_blend' is supported in the driver
*/
bool lv_disp_is_mem_blend_supported(void);
/**
* Shows if memory fill (by GPU) is supported or not
* @return false: 'mem_fill' is not supported in the drover; true: 'mem_fill' is supported in the driver
*/
bool lv_disp_is_mem_fill_supported(void);
#endif
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif

135
bdk/libs/lvgl/lv_hal/lv_hal_indev.c Normal file
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/**
* @file hal_indev.c
*
* @description Input device HAL interface
*
*/
/*********************
* INCLUDES
*********************/
#include "../lv_hal/lv_hal_indev.h"
#include "../lv_misc/lv_mem.h"
#include "../lv_misc/lv_gc.h"
#if defined(LV_GC_INCLUDE)
# include LV_GC_INCLUDE
#endif /* LV_ENABLE_GC */
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize an input device driver with default values.
* It is used to surly have known values in the fields ant not memory junk.
* After it you can set the fields.
* @param driver pointer to driver variable to initialize
*/
void lv_indev_drv_init(lv_indev_drv_t * driver)
{
driver->read = NULL;
driver->type = LV_INDEV_TYPE_NONE;
driver->user_data = NULL;
}
/**
* Register an initialized input device driver.
* @param driver pointer to an initialized 'lv_indev_drv_t' variable (can be local variable)
* @return pointer to the new input device or NULL on error
*/
lv_indev_t * lv_indev_drv_register(lv_indev_drv_t * driver)
{
lv_indev_t * node;
node = lv_mem_alloc(sizeof(lv_indev_t));
if(!node) return NULL;
memset(node, 0, sizeof(lv_indev_t));
memcpy(&node->driver, driver, sizeof(lv_indev_drv_t));
node->next = NULL;
node->proc.reset_query = 1;
node->cursor = NULL;
node->group = NULL;
node->btn_points = NULL;
if(LV_GC_ROOT(_lv_indev_list) == NULL) {
LV_GC_ROOT(_lv_indev_list) = node;
} else {
lv_indev_t * last = LV_GC_ROOT(_lv_indev_list);
while(last->next)
last = last->next;
last->next = node;
}
return node;
}
/**
* Get the next input device.
* @param indev pointer to the current input device. NULL to initialize.
* @return the next input devise or NULL if no more. Give the first input device when the parameter is NULL
*/
lv_indev_t * lv_indev_next(lv_indev_t * indev)
{
if(indev == NULL) {
return LV_GC_ROOT(_lv_indev_list);
} else {
if(indev->next == NULL) return NULL;
else return indev->next;
}
}
/**
* Read data from an input device.
* @param indev pointer to an input device
* @param data input device will write its data here
* @return false: no more data; true: there more data to read (buffered)
*/
bool lv_indev_read(lv_indev_t * indev, lv_indev_data_t * data)
{
bool cont = false;
memset(data, 0, sizeof(lv_indev_data_t));
data->state = LV_INDEV_STATE_REL;
if(indev->driver.read) {
data->user_data = indev->driver.user_data;
LV_LOG_TRACE("idnev read started");
cont = indev->driver.read(data);
LV_LOG_TRACE("idnev read finished");
} else {
LV_LOG_WARN("indev function registered");
}
return cont;
}
/**********************
* STATIC FUNCTIONS
**********************/

166
bdk/libs/lvgl/lv_hal/lv_hal_indev.h Normal file
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/**
* @file hal_indev.h
*
* @description Input Device HAL interface layer header file
*
*/
#ifndef HAL_INDEV_H
#define HAL_INDEV_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stdint.h>
#include "lv_hal.h"
#include "../../../utils/types.h"
#include "../lv_misc/lv_area.h"
#include "../lv_core/lv_obj.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/*Possible input device types*/
enum {
LV_INDEV_TYPE_NONE, /*Show uninitialized state*/
LV_INDEV_TYPE_POINTER, /*Touch pad, mouse, external button*/
LV_INDEV_TYPE_KEYPAD, /*Keypad or keyboard*/
LV_INDEV_TYPE_BUTTON, /*External (hardware button) which is assinged to a specific point of the screen*/
LV_INDEV_TYPE_ENCODER, /*Encoder with only Left, Right turn and a Button*/
};
typedef uint8_t lv_hal_indev_type_t;
/*States for input devices*/
enum {
LV_INDEV_STATE_REL = 0,
LV_INDEV_STATE_PR
};
typedef uint8_t lv_indev_state_t;
/*Data type when an input device is read */
typedef struct {
union {
lv_point_t point; /*For LV_INDEV_TYPE_POINTER the currently pressed point*/
uint32_t key; /*For LV_INDEV_TYPE_KEYPAD the currently pressed key*/
uint32_t btn; /*For LV_INDEV_TYPE_BUTTON the currently pressed button*/
int16_t enc_diff; /*For LV_INDEV_TYPE_ENCODER number of steps since the previous read*/
};
void *user_data; /*'lv_indev_drv_t.priv' for this driver*/
lv_indev_state_t state; /*LV_INDEV_STATE_REL or LV_INDEV_STATE_PR*/
} lv_indev_data_t;
/*Initialized by the user and registered by 'lv_indev_add()'*/
typedef struct {
lv_hal_indev_type_t type; /*Input device type*/
bool (*read)(lv_indev_data_t *data); /*Function pointer to read data. Return 'true' if there is still data to be read (buffered)*/
void *user_data; /*Pointer to user defined data, passed in 'lv_indev_data_t' on read*/
} lv_indev_drv_t;
struct _lv_obj_t;
/*Run time data of input devices*/
typedef struct _lv_indev_proc_t {
lv_indev_state_t state;
union {
struct { /*Pointer and button data*/
lv_point_t act_point;
lv_point_t last_point;
lv_point_t vect;
lv_point_t drag_sum; /*Count the dragged pixels to check LV_INDEV_DRAG_LIMIT*/
struct _lv_obj_t * act_obj;
struct _lv_obj_t * last_obj;
/*Flags*/
uint8_t drag_range_out :1;
uint8_t drag_in_prog :1;
uint8_t wait_unil_release :1;
};
struct { /*Keypad data*/
lv_indev_state_t last_state;
uint32_t last_key;
};
};
uint32_t pr_timestamp; /*Pressed time stamp*/
uint32_t longpr_rep_timestamp; /*Long press repeat time stamp*/
/*Flags*/
uint8_t long_pr_sent :1;
uint8_t reset_query :1;
uint8_t disabled :1;
} lv_indev_proc_t;
struct _lv_indev_t;
typedef void (*lv_indev_feedback_t)(struct _lv_indev_t *, lv_signal_t);
struct _lv_obj_t;
struct _lv_group_t;
/*The main input device descriptor with driver, runtime data ('proc') and some additional information*/
typedef struct _lv_indev_t {
lv_indev_drv_t driver;
lv_indev_proc_t proc;
lv_indev_feedback_t feedback;
uint32_t last_activity_time;
union {
struct _lv_obj_t *cursor; /*Cursor for LV_INPUT_TYPE_POINTER*/
struct _lv_group_t *group; /*Keypad destination group*/
const lv_point_t * btn_points; /*Array points assigned to the button ()screen will be pressed here by the buttons*/
};
struct _lv_indev_t *next;
} lv_indev_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize an input device driver with default values.
* It is used to surly have known values in the fields ant not memory junk.
* After it you can set the fields.
* @param driver pointer to driver variable to initialize
*/
void lv_indev_drv_init(lv_indev_drv_t *driver);
/**
* Register an initialized input device driver.
* @param driver pointer to an initialized 'lv_indev_drv_t' variable (can be local variable)
* @return pointer to the new input device or NULL on error
*/
lv_indev_t * lv_indev_drv_register(lv_indev_drv_t *driver);
/**
* Get the next input device.
* @param indev pointer to the current input device. NULL to initialize.
* @return the next input devise or NULL if no more. Gives the first input device when the parameter is NULL
*/
lv_indev_t * lv_indev_next(lv_indev_t * indev);
/**
* Read data from an input device.
* @param indev pointer to an input device
* @param data input device will write its data here
* @return false: no more data; true: there more data to read (buffered)
*/
bool lv_indev_read(lv_indev_t * indev, lv_indev_data_t *data);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif

100
bdk/libs/lvgl/lv_hal/lv_hal_tick.c Normal file
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/**
* @file systick.c
* Provide access to the system tick with 1 millisecond resolution
*/
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../lv_conf.h"
#endif
#include "lv_hal_tick.h"
#include <stddef.h>
#if LV_TICK_CUSTOM == 1
#include LV_TICK_CUSTOM_INCLUDE
#endif
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
static uint32_t sys_time = 0;
static volatile uint8_t tick_irq_flag;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* You have to call this function periodically
* @param tick_period the call period of this function in milliseconds
*/
LV_ATTRIBUTE_TICK_INC void lv_tick_inc(uint32_t tick_period)
{
tick_irq_flag = 0;
sys_time += tick_period;
}
/**
* Get the elapsed milliseconds since start up
* @return the elapsed milliseconds
*/
uint32_t lv_tick_get(void)
{
#if LV_TICK_CUSTOM == 0
uint32_t result;
do {
tick_irq_flag = 1;
result = sys_time;
} while(!tick_irq_flag); /*'lv_tick_inc()' clears this flag which can be in an interrupt. Continue until make a non interrupted cycle */
return result;
#else
return LV_TICK_CUSTOM_SYS_TIME_EXPR;
#endif
}
/**
* Get the elapsed milliseconds since a previous time stamp
* @param prev_tick a previous time stamp (return value of systick_get() )
* @return the elapsed milliseconds since 'prev_tick'
*/
uint32_t lv_tick_elaps(uint32_t prev_tick)
{
uint32_t act_time = lv_tick_get();
/*If there is no overflow in sys_time simple subtract*/
if(act_time >= prev_tick) {
prev_tick = act_time - prev_tick;
} else {
prev_tick = UINT32_MAX - prev_tick + 1;
prev_tick += act_time;
}
return prev_tick;
}
/**********************
* STATIC FUNCTIONS
**********************/

65
bdk/libs/lvgl/lv_hal/lv_hal_tick.h Normal file
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@@ -0,0 +1,65 @@
/**
* @file lv_hal_tick.h
* Provide access to the system tick with 1 millisecond resolution
*/
#ifndef LV_HAL_TICK_H
#define LV_HAL_TICK_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../lv_conf.h"
#endif
#include <stdint.h>
/*********************
* DEFINES
*********************/
#ifndef LV_ATTRIBUTE_TICK_INC
#define LV_ATTRIBUTE_TICK_INC
#endif
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* You have to call this function periodically
* @param tick_period the call period of this function in milliseconds
*/
LV_ATTRIBUTE_TICK_INC void lv_tick_inc(uint32_t tick_period);
/**
* Get the elapsed milliseconds since start up
* @return the elapsed milliseconds
*/
uint32_t lv_tick_get(void);
/**
* Get the elapsed milliseconds since a previous time stamp
* @param prev_tick a previous time stamp (return value of systick_get() )
* @return the elapsed milliseconds since 'prev_tick'
*/
uint32_t lv_tick_elaps(uint32_t prev_tick);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_HAL_TICK_H*/