u8g2 raspi menu

This commit is contained in:
olikraus 2021-08-01 18:10:33 +01:00
parent 67200cc43f
commit 7bd4598e30
2 changed files with 282 additions and 0 deletions

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CFLAGS = -O -I../hal -I../../../csrc -DU8X8_USE_PINS -ffunction-sections -fdata-sections
LDFLAGS = -Wl,--gc-sections
SRC = $(wildcard *.c) $(wildcard ../hal/*.c) $(wildcard ../../../csrc/*.c)
OBJ = $(SRC:.c=.o)
main: $(OBJ)
$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ) -o main
clean:
-rm $(OBJ) main

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/*
main.c
raspberry pi zero GPIO read test
For speedup run this example as root, either wis
sudo ./main
or by setting the superuser bit:
sudo chown root:root ./main
sudo chmod u+s ./main
*/
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include "bcm2835.h"
#include "raspi_gpio_hal.h"
#include "u8g2.h"
u8g2_t u8g2; // a structure which will contain all the data for one display
void sigtermhandler(int x)
{
puts("SIGTERM");
bcm2835_close();
exit(0);
}
void siginthandler(int x)
{
puts("SIGINT");
bcm2835_close();
exit(0);
}
#define BUTTON_STATE_NOT_PRESSED 0
#define BUTTON_STATE_HIGH_DETECT 1
#define BUTTON_STATE_HIGH_WAIT 2
#define BUTTON_STATE_LOW_DELAY 3
struct button_struct
{
int state;
int delay;
uint8_t pin;
};
typedef struct button_struct button_t;
#define BUTTON_DELAY_HIGH 2
#define BUTTON_DELAY_LOW 2
#define BUTTON_CNT 2
button_t button_list[BUTTON_CNT];
int button_init(void)
{
int i;
for( i = 0; i < BUTTON_CNT; i++ )
{
bcm2835_gpio_fsel(button_list[i].pin, BCM2835_GPIO_FSEL_INPT);
}
}
int button_get_event(void)
{
int button_value = -1;
int i;
for( i = 0; i < BUTTON_CNT; i++ )
{
switch(button_list[i].state)
{
case BUTTON_STATE_NOT_PRESSED:
button_list[i].delay = 0;
if ( bcm2835_gpio_lev(button_list[i].pin) != 0 )
button_list[i].state = BUTTON_STATE_HIGH_DETECT;
break;
case BUTTON_STATE_HIGH_DETECT:
if ( bcm2835_gpio_lev(button_list[i].pin) == 0 )
{
button_list[i].delay = 0;
button_list[i].state = BUTTON_STATE_LOW_DELAY;
}
button_list[i].delay++;
if ( button_list[i].delay >= BUTTON_DELAY_HIGH )
{
button_value = i;
button_list[i].state = BUTTON_STATE_HIGH_WAIT;
}
break;
case BUTTON_STATE_HIGH_WAIT:
if ( bcm2835_gpio_lev(button_list[i].pin) == 0 )
{
button_list[i].delay = 0;
button_list[i].state = BUTTON_STATE_LOW_DELAY;
}
break;
case BUTTON_STATE_LOW_DELAY:
button_list[i].delay++;
if ( button_list[i].delay >= BUTTON_DELAY_LOW )
button_list[i].state = BUTTON_STATE_NOT_PRESSED;
break;
}
}
return button_value;
}
/*
title: NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
start_pos: default position for the cursor, first line is 1.
sl: string list (list of strings separated by \n)
returns 0 if user has pressed the home key
returns the selected line if user has pressed the select key
side effects:
u8g2_SetFontDirection(u8g2, 0);
u8g2_SetFontPosBaseline(u8g2);
*/
#define BUTTON_SELECT 0
#define BUTTON_NEXT 1
extern void u8g2_DrawSelectionList(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, const char *s);
#define MY_BORDER_SIZE 1
#define MY_RULE_SIZE 2
uint8_t u8g2_RaspiUserInterfaceSelectionList(u8g2_t *u8g2, const char *title, uint8_t start_pos, const char *sl)
{
u8sl_t u8sl;
u8g2_uint_t yy;
uint8_t event;
u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2)+MY_BORDER_SIZE;
uint8_t title_lines = u8x8_GetStringLineCnt(title);
uint8_t display_lines;
if ( start_pos > 0 ) /* issue 112 */
start_pos--; /* issue 112 */
if ( title_lines > 0 )
{
display_lines = (u8g2_GetDisplayHeight(u8g2)-2-MY_RULE_SIZE) / line_height;
u8sl.visible = display_lines;
u8sl.visible -= title_lines;
}
else
{
display_lines = u8g2_GetDisplayHeight(u8g2) / line_height;
u8sl.visible = display_lines;
}
u8sl.total = u8x8_GetStringLineCnt(sl);
u8sl.first_pos = 0;
u8sl.current_pos = start_pos;
if ( u8sl.current_pos >= u8sl.total )
u8sl.current_pos = u8sl.total-1;
if ( u8sl.first_pos+u8sl.visible <= u8sl.current_pos )
u8sl.first_pos = u8sl.current_pos-u8sl.visible+1;
u8g2_SetFontPosBaseline(u8g2);
for(;;)
{
u8g2_FirstPage(u8g2);
do
{
yy = u8g2_GetAscent(u8g2);
if ( title_lines > 0 )
{
yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
//u8g2_DrawHLine(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2));
u8g2_DrawBox(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2), MY_RULE_SIZE);
yy += 2+MY_RULE_SIZE;
}
u8g2_DrawSelectionList(u8g2, &u8sl, yy, sl);
} while( u8g2_NextPage(u8g2) );
#ifdef U8G2_REF_MAN_PIC
return 0;
#endif
for(;;)
{
event = button_get_event();
if ( event == BUTTON_SELECT )
return u8sl.current_pos+1; /* +1, issue 112 */
else if ( event == BUTTON_NEXT )
{
u8sl_Next(&u8sl);
break;
}
/*
else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
{
u8sl_Prev(&u8sl);
break;
}
*/
}
}
}
int main(void)
{
int i = 0;
int b = -1;
int pins[4] = { 12, 13, 16, 17 };
if (!bcm2835_init())
exit(1);
signal(SIGTERM, sigtermhandler);
signal(SIGINT, siginthandler);
atexit((void (*) (void))bcm2835_close);
button_list[0].pin = 12;
button_list[1].pin = 16;
button_init();
u8g2_Setup_sh1107_i2c_seeed_128x128_f(&u8g2, U8G2_R3, u8x8_byte_sw_i2c, u8x8_gpio_and_delay_raspi_gpio_hal); // init u8g2 structure
u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_I2C_CLOCK, 5);
u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_I2C_DATA, 6);
u8g2_InitDisplay(&u8g2); // send init sequence to the display, display is in sleep mode after this,
u8g2_SetPowerSave(&u8g2, 0); // wake up display
u8g2_ClearBuffer(&u8g2);
u8g2_SendBuffer(&u8g2);
u8g2_SetFont(&u8g2, u8g2_font_lastapprenticebold_tr);
//u8g2_SetFont(&u8g2, u8g2_font_helvB12_tr);
//u8g2_DrawStr(&u8g2, 0, 50, "Hello");
//u8g2_DrawStr(&u8g2, 0, 100, "World!");
//u8g2_SendBuffer(&u8g2);
u8g2_RaspiUserInterfaceSelectionList(&u8g2, "Menu", 1, "apple\nbanana\nraspberry\nMango");
for( ;; )
{
b = button_get_event();
if ( b >= 0 )
printf("Button %d\n", b);
}
//delaynanoseconds(500000000UL);
}