projects/fb-dash
1
1
Fork 0
Code Issues Pull Requests Releases Activity

some cleanup and light color effects

Browse Source
This commit is contained in:
Florian Klemenz 2022-05-03 20:56:13 +02:00
parent 6d920e7bd1
commit 6c3c870f5e
2 changed files with 59 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

105
fbdash.c
View File

@ -34,9 +34,15 @@
#define WIDTH 240 #define WIDTH 240
#define HEIGHT 320 #define HEIGHT 320
char *fbp = 0; char *fbp = 0;
struct s_color {
unsigned char r;
unsigned char g;
unsigned char b;
};
typedef struct s_color color;
struct s_sourcedata { struct s_sourcedata {
char* text; char* text;
@ -45,14 +51,24 @@ struct s_sourcedata {
}; };
typedef struct s_sourcedata sourcedata; typedef struct s_sourcedata sourcedata;
void finish_with_error(MYSQL *con) { void finish_with_error(MYSQL *con) {
fprintf(stderr, "%s\n", mysql_error(con)); fprintf(stderr, "%s\n", mysql_error(con));
mysql_close(con); mysql_close(con);
exit(1); exit(1);
} }
void updateSlot(char *fbp, sourcedata data, int x_offset, int y_offset, color c) {
render_string(fbp, ubuntu_mono_24, data.text, x_offset, y_offset, c.r, c.g, c.b);
render_string(fbp, ubuntu_mono_48, data.temperature, x_offset + 115, y_offset - 9, c.r, c.g, c.b);
render_string(fbp, ubuntu_mono_48, "C", x_offset + 195, y_offset - 9, c.r, c.g, c.b);
render_string(fbp, ubuntu_mono_48, data.humidity, x_offset + 115, y_offset + 26, c.r, c.g, c.b);
render_string(fbp, ubuntu_mono_48, "%", x_offset + 195, y_offset + 26, c.r, c.g, c.b);
}
void updateData() { void updateData(char *fbp, int slot_height) {
// query database for latest values // query database for latest values
printf("MySQL client version: %s\n", mysql_get_client_info()); printf("MySQL client version: %s\n", mysql_get_client_info());
MYSQL *con = mysql_init(NULL); MYSQL *con = mysql_init(NULL);
@ -77,11 +93,12 @@ INNER JOIN metrics AS m ON r.metric_id = m.id \
WHERE \ WHERE \
time > (NOW() - 60 * 15) AND \ time > (NOW() - 60 * 15) AND \
metric IN ('Luftfeuchte','Temperatur') AND \ metric IN ('Luftfeuchte','Temperatur') AND \
source IN ('Esszimmer','Wohnzimmer') \ source IN ('Esszimmer','Wohnzimmer', 'Schlafzimmer', 'Abstellkammer') \
ORDER BY time DESC \ ORDER BY time DESC \
LIMIT 100;"; LIMIT 100;";
printf("%s\n",query); //printf("%s\n",query);
printf("Fetching data ...\n");
if (mysql_query(con, query)) { if (mysql_query(con, query)) {
finish_with_error(con); finish_with_error(con);
@ -91,55 +108,51 @@ printf("%s\n",query);
finish_with_error(con); finish_with_error(con);
} }
sourcedata esszimmer = { "Esszimmer", NULL, NULL }; // define what to display
sourcedata wohnzimmer = { "Wohnzimmer", NULL, NULL }; sourcedata data[4] = {
{ "Esszimmer", NULL, NULL },
{ "Wohnzimmer", NULL, NULL },
{ "Schlafzimmer", NULL, NULL },
{ "Abstellkammer", NULL, NULL }
};
int num_fields = mysql_num_fields(result); int num_fields = mysql_num_fields(result);
MYSQL_ROW row; if (num_fields > 3) {
while ((row = mysql_fetch_row(result))) { MYSQL_ROW row;
row[3][5] = '\0'; // loose the third decimal ... while ((row = mysql_fetch_row(result))) {
if (strlen(row[3]) > 4) row[3][4] = '\0'; // loose the secnod and third decimal ...
// data binding // data binding
if (strcmp(row[1], "Esszimmer") == 0) { for (int i = 0; i < 4; i++) {
if (strcmp(row[2], "Temperatur") == 0 && esszimmer.temperature == NULL) esszimmer.temperature = row[3]; if (strcmp(row[1], data[i].text) == 0) {
else if (strcmp(row[2], "Luftfeuchte") == 0 && esszimmer.humidity == NULL) esszimmer.humidity = row[3]; if (strcmp(row[2], "Temperatur") == 0 && data[i].temperature == NULL) data[i].temperature = row[3];
} else if (strcmp(row[2], "Luftfeuchte") == 0 && data[i].humidity == NULL) data[i].humidity = row[3];
if (strcmp(row[1], "Wohnzimmer") == 0) { }
if (strcmp(row[2], "Temperatur") == 0 && wohnzimmer.temperature == NULL) wohnzimmer.temperature = row[3]; }
else if (strcmp(row[2], "Luftfeuchte") == 0 && wohnzimmer.humidity == NULL) wohnzimmer.humidity = row[3];
}
// debugging // debugging
for(int i = 0; i < num_fields; i++) { //for(int i = 0; i < num_fields; i++) printf("%s ", row[i] ? row[i] : "NULL");
printf("%s ", row[i] ? row[i] : "NULL"); //printf("\n");
} }
printf("\n"); }
}
printf("Updating dashboard...\n");
for (int i = 0; i < 4; i++) {
color c = {255,125 + 25*i,25 + 25*i};
updateSlot(fbp, data[i], 15, 7 + slot_height * i, c);
}
render_string(fbp, ubuntu_mono_24, esszimmer.text, 15, 7, 255, 255, 255); printf("Done!\n");
render_string(fbp, ubuntu_mono_48, esszimmer.temperature, 115, -2, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, "C", 200, -2, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, esszimmer.humidity, 115, 33, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, "%", 200, 33, 255, 255, 255);
render_string(fbp, ubuntu_mono_24, wohnzimmer.text, 15, 87, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, wohnzimmer.temperature, 115, 77, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, "C", 200, 77, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, wohnzimmer.humidity, 115, 113, 255, 255, 255);
render_string(fbp, ubuntu_mono_48, "%", 200, 113, 255, 255, 255);
mysql_free_result(result); mysql_free_result(result);
mysql_close(con); mysql_close(con);
} }
void draw() { void draw() {
clear_screen(fbp); clear_screen(fbp);
@ -159,14 +172,8 @@ void draw() {
draw_line(fbp, x0, y+1, x1, y+1, r, g, b); draw_line(fbp, x0, y+1, x1, y+1, r, g, b);
} }
// fetch data from database and update screen
updateData(); updateData(fbp, y_step_width);
/*
char *text = "Hell O_o!";
render_string(fbp, ubuntu_mono_48, text, 15, 0, 255, 255, 255);
render_string(fbp, ubuntu_mono_24, text, 15, 50, 255, 255, 255);
render_string(fbp, basic_8, text, 15, 100, 255, 255, 255);
*/
} }

6
fblib.c
View File

@ -169,10 +169,10 @@ void draw_line(char *fbp, int x0, int y0, int x1, int y1, int r, int g, int b) {
void render_string(char *fbp, fbfont font, char *text, int x, int y, int r, int g, int b) void render_string(char *fbp, fbfont font, char *text, int x, int y, int r, int g, int b)
{ {
int text_length = strlen(text); int text_length = strlen(text);
printf("text_length = %d\n", text_length); //printf("text_length = %d\n", text_length);
int bytes_per_line = ceil(font.width / 8.0); int bytes_per_line = ceil(font.width / 8.0);
printf("bytes_per_line = %d\n", bytes_per_line); //printf("bytes_per_line = %d\n", bytes_per_line);
int char_offset = bytes_per_line * font.height; int char_offset = bytes_per_line * font.height;
@ -199,7 +199,7 @@ void render_string(char *fbp, fbfont font, char *text, int x, int y, int r, int
//printf("x"); //printf("x");
int x_pos = x_offset + byte_num * 8 + bit_number; int x_pos = x_offset + byte_num * 8 + bit_number;
put_pixel(fbp, x_pos, y_pos, 255, 255, 255); put_pixel(fbp, x_pos, y_pos, r, g, b);
} }
else { else {
// leave empty (or maybe plot 'text backgr color') // leave empty (or maybe plot 'text backgr color')