u8g2 raspi menu
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olikraus
parent
67200cc43f
commit
7bd4598e30
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CFLAGS = -O -I../hal -I../../../csrc -DU8X8_USE_PINS -ffunction-sections -fdata-sections
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LDFLAGS = -Wl,--gc-sections
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SRC = $(wildcard *.c) $(wildcard ../hal/*.c) $(wildcard ../../../csrc/*.c)
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OBJ = $(SRC:.c=.o)
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main: $(OBJ)
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$(CC) $(CFLAGS) $(LDFLAGS) $(OBJ) -o main
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clean:
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-rm $(OBJ) main
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/*
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main.c
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raspberry pi zero GPIO read test
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For speedup run this example as root, either wis
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sudo ./main
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or by setting the superuser bit:
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sudo chown root:root ./main
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sudo chmod u+s ./main
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <signal.h>
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#include "bcm2835.h"
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#include "raspi_gpio_hal.h"
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#include "u8g2.h"
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u8g2_t u8g2; // a structure which will contain all the data for one display
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void sigtermhandler(int x)
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{
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puts("SIGTERM");
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bcm2835_close();
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exit(0);
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}
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void siginthandler(int x)
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{
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puts("SIGINT");
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bcm2835_close();
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exit(0);
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}
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#define BUTTON_STATE_NOT_PRESSED 0
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#define BUTTON_STATE_HIGH_DETECT 1
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#define BUTTON_STATE_HIGH_WAIT 2
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#define BUTTON_STATE_LOW_DELAY 3
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struct button_struct
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{
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int state;
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int delay;
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uint8_t pin;
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};
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typedef struct button_struct button_t;
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#define BUTTON_DELAY_HIGH 2
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#define BUTTON_DELAY_LOW 2
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#define BUTTON_CNT 2
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button_t button_list[BUTTON_CNT];
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int button_init(void)
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{
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int i;
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for( i = 0; i < BUTTON_CNT; i++ )
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{
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bcm2835_gpio_fsel(button_list[i].pin, BCM2835_GPIO_FSEL_INPT);
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}
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}
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int button_get_event(void)
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{
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int button_value = -1;
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int i;
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for( i = 0; i < BUTTON_CNT; i++ )
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{
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switch(button_list[i].state)
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{
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case BUTTON_STATE_NOT_PRESSED:
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button_list[i].delay = 0;
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if ( bcm2835_gpio_lev(button_list[i].pin) != 0 )
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button_list[i].state = BUTTON_STATE_HIGH_DETECT;
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break;
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case BUTTON_STATE_HIGH_DETECT:
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if ( bcm2835_gpio_lev(button_list[i].pin) == 0 )
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{
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button_list[i].delay = 0;
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button_list[i].state = BUTTON_STATE_LOW_DELAY;
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}
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button_list[i].delay++;
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if ( button_list[i].delay >= BUTTON_DELAY_HIGH )
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{
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button_value = i;
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button_list[i].state = BUTTON_STATE_HIGH_WAIT;
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}
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break;
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case BUTTON_STATE_HIGH_WAIT:
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if ( bcm2835_gpio_lev(button_list[i].pin) == 0 )
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{
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button_list[i].delay = 0;
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button_list[i].state = BUTTON_STATE_LOW_DELAY;
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}
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break;
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case BUTTON_STATE_LOW_DELAY:
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button_list[i].delay++;
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if ( button_list[i].delay >= BUTTON_DELAY_LOW )
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button_list[i].state = BUTTON_STATE_NOT_PRESSED;
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break;
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}
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}
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return button_value;
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}
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/*
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title: NULL for no title, valid str for title line. Can contain mutliple lines, separated by '\n'
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start_pos: default position for the cursor, first line is 1.
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sl: string list (list of strings separated by \n)
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returns 0 if user has pressed the home key
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returns the selected line if user has pressed the select key
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side effects:
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u8g2_SetFontDirection(u8g2, 0);
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u8g2_SetFontPosBaseline(u8g2);
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*/
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#define BUTTON_SELECT 0
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#define BUTTON_NEXT 1
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extern void u8g2_DrawSelectionList(u8g2_t *u8g2, u8sl_t *u8sl, u8g2_uint_t y, const char *s);
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#define MY_BORDER_SIZE 1
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#define MY_RULE_SIZE 2
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uint8_t u8g2_RaspiUserInterfaceSelectionList(u8g2_t *u8g2, const char *title, uint8_t start_pos, const char *sl)
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{
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u8sl_t u8sl;
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u8g2_uint_t yy;
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uint8_t event;
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u8g2_uint_t line_height = u8g2_GetAscent(u8g2) - u8g2_GetDescent(u8g2)+MY_BORDER_SIZE;
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uint8_t title_lines = u8x8_GetStringLineCnt(title);
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uint8_t display_lines;
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if ( start_pos > 0 ) /* issue 112 */
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start_pos--; /* issue 112 */
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if ( title_lines > 0 )
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{
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display_lines = (u8g2_GetDisplayHeight(u8g2)-2-MY_RULE_SIZE) / line_height;
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u8sl.visible = display_lines;
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u8sl.visible -= title_lines;
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}
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else
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{
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display_lines = u8g2_GetDisplayHeight(u8g2) / line_height;
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u8sl.visible = display_lines;
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}
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u8sl.total = u8x8_GetStringLineCnt(sl);
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u8sl.first_pos = 0;
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u8sl.current_pos = start_pos;
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if ( u8sl.current_pos >= u8sl.total )
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u8sl.current_pos = u8sl.total-1;
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if ( u8sl.first_pos+u8sl.visible <= u8sl.current_pos )
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u8sl.first_pos = u8sl.current_pos-u8sl.visible+1;
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u8g2_SetFontPosBaseline(u8g2);
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for(;;)
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{
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u8g2_FirstPage(u8g2);
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do
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{
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yy = u8g2_GetAscent(u8g2);
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if ( title_lines > 0 )
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{
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yy += u8g2_DrawUTF8Lines(u8g2, 0, yy, u8g2_GetDisplayWidth(u8g2), line_height, title);
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//u8g2_DrawHLine(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2));
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u8g2_DrawBox(u8g2, 0, yy-line_height- u8g2_GetDescent(u8g2) + 1, u8g2_GetDisplayWidth(u8g2), MY_RULE_SIZE);
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yy += 2+MY_RULE_SIZE;
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}
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u8g2_DrawSelectionList(u8g2, &u8sl, yy, sl);
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} while( u8g2_NextPage(u8g2) );
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#ifdef U8G2_REF_MAN_PIC
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return 0;
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#endif
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for(;;)
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{
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event = button_get_event();
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if ( event == BUTTON_SELECT )
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return u8sl.current_pos+1; /* +1, issue 112 */
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else if ( event == BUTTON_NEXT )
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{
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u8sl_Next(&u8sl);
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break;
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}
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/*
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else if ( event == U8X8_MSG_GPIO_MENU_PREV || event == U8X8_MSG_GPIO_MENU_UP )
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{
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u8sl_Prev(&u8sl);
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break;
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}
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*/
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}
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}
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}
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int main(void)
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{
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int i = 0;
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int b = -1;
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int pins[4] = { 12, 13, 16, 17 };
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if (!bcm2835_init())
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exit(1);
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signal(SIGTERM, sigtermhandler);
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signal(SIGINT, siginthandler);
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atexit((void (*) (void))bcm2835_close);
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button_list[0].pin = 12;
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button_list[1].pin = 16;
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button_init();
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u8g2_Setup_sh1107_i2c_seeed_128x128_f(&u8g2, U8G2_R3, u8x8_byte_sw_i2c, u8x8_gpio_and_delay_raspi_gpio_hal); // init u8g2 structure
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u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_I2C_CLOCK, 5);
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u8x8_SetPin(u8g2_GetU8x8(&u8g2), U8X8_PIN_I2C_DATA, 6);
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u8g2_InitDisplay(&u8g2); // send init sequence to the display, display is in sleep mode after this,
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u8g2_SetPowerSave(&u8g2, 0); // wake up display
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u8g2_ClearBuffer(&u8g2);
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u8g2_SendBuffer(&u8g2);
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u8g2_SetFont(&u8g2, u8g2_font_lastapprenticebold_tr);
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//u8g2_SetFont(&u8g2, u8g2_font_helvB12_tr);
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//u8g2_DrawStr(&u8g2, 0, 50, "Hello");
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//u8g2_DrawStr(&u8g2, 0, 100, "World!");
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//u8g2_SendBuffer(&u8g2);
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u8g2_RaspiUserInterfaceSelectionList(&u8g2, "Menu", 1, "apple\nbanana\nraspberry\nMango");
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for( ;; )
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{
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b = button_get_event();
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if ( b >= 0 )
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printf("Button %d\n", b);
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}
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//delaynanoseconds(500000000UL);
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}
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