sirian/oled-counter-esp32
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This commit is contained in:
Elias Ahokas
2025-10-17 23:46:35 +03:00
parent 77d2aa09ec
commit de8b0d663b
1 changed files with 14 additions and 163 deletions
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177
main/main.c
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@@ -16,7 +16,7 @@
/* Docs: https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf */
#define DISP_ADDRESS 0X3c
#define I2C_FREQ 100000
#define I2C_FREQ 400000
static i2c_master_dev_handle_t disp_handle;
@@ -55,19 +55,9 @@ void i2c_disp_send_cmd(uint8_t cmd){
i2c_master_transmit(disp_handle, data, sizeof(data), pdMS_TO_TICKS(1000));
vTaskDelay(pdMS_TO_TICKS(1));
}
/*void i2c_disp_send_data(uint8_t *data, size_t len){
uint8_t *buf = malloc(len + 1);
buf[0] = 0x40; data mode
memcpy(&buf[1], data, len);
ESP_ERROR_CHECK(
i2c_master_transmit(disp_handle, buf, len + 1, pdMS_TO_TICKS(100)));
free(buf);
}*/
void i2c_disp_send_data(uint8_t *data, size_t len){
uint8_t *buf = malloc(len+1);
@@ -123,9 +113,7 @@ void init_display(void){
i2c_disp_send_cmd(0xAF); // Display ON
}
void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map)
{
printf("FLUSH CALLED! area: (%ld,%ld)-(%ld,%ld)\n", (long)area->x1, (long)area->y1, (long)area->x2, (long)area->y2);
void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map){
if (flush_sem == NULL)
{
@@ -134,8 +122,6 @@ void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_
}
xSemaphoreTake(flush_sem, portMAX_DELAY);
uint16_t width = 128;
uint16_t height = 64;
@@ -155,10 +141,6 @@ void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_
{
uint8_t byte = px_map[i];
if(i < 8){
printf("0x%02X ", (unsigned int)byte);
}
for (int bit = 7; bit >= 0; bit--)
{
if (byte & (1 << bit))
@@ -188,47 +170,6 @@ void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_
}
}
/*
static uint8_t vtiled_buf[(128 * 64 / 8) + 8];
lv_draw_sw_i1_convert_to_vtiled(px_map, 1024, width, height, vtiled_buf, sizeof(vtiled_buf), false);
uint32_t pixel_count = 0;
uint16_t k = 0;
for (uint8_t page = 0; page < pages; page++){
for (uint16_t i = 0; i < width; i++){
uint8_t byte = vtiled_buf[1+ i*pages + page];
for (int bit = 0; bit <= 7; bit++){
pixel_count++;
if (byte & (1 << bit)){
buf[k++] = 1;
printf("#");
} else{
buf[k++] = 0;
printf(".");
}
}
if (i % (width / 8) == 0)
{
printf("\n");
}
}
i2c_disp_send_cmd(0x22);
i2c_disp_send_cmd(page);
i2c_disp_send_cmd(page);
i2c_disp_send_data(buf, buf_size);
k = 0;
printf("page sent");
printf("%ld", (long)pixel_count);
}
printf("%ld", (long)pixel_count);
*/
lv_display_flush_ready(disp);
xSemaphoreGive(flush_sem);
}
@@ -275,7 +216,7 @@ void lv_tick_task(void *arg){
void lv_task(void *arg){
while(1){
lv_task_handler();
vTaskDelay(pdMS_TO_TICKS(10));
vTaskDelay(pdMS_TO_TICKS(50));
}
}
@@ -294,149 +235,59 @@ void counter_task(void *arg){
counter++;
}
vTaskDelay(pdMS_TO_TICKS(1000));
vTaskDelay(pdMS_TO_TICKS(100));
}
}
void create_counter(void){
lv_obj_t *scr = lv_scr_act();
//lv_obj_set_style_bg_color(scr, lv_color_black(), 0);
//lv_obj_set_style_bg_opa(scr, LV_OPA_COVER, 0);
/*
// White box on top left
lv_obj_t *box = lv_obj_create(scr);
lv_obj_set_size(box, 10, 10);
lv_obj_set_pos(box, 5, 5); // Keskelle: (64-5, 32-5)
lv_obj_align(box, LV_ALIGN_TOP_LEFT, 0, 0);
lv_obj_set_style_bg_color(box, lv_color_white(), 0);
lv_obj_set_style_bg_opa(box, LV_OPA_COVER, 0);
lv_obj_set_style_border_width(box, 0, 0);
lv_obj_set_style_radius(box, 0, 0);
lv_obj_set_style_pad_all(box, 0, 0);
lv_obj_clear_flag(box, LV_OBJ_FLAG_SCROLLABLE);
*/
// Valkoinen neliö vasempaan reunaan
lv_obj_t *box = lv_obj_create(scr);
lv_obj_set_size(box, 10, 10);
lv_obj_align(box, LV_ALIGN_TOP_LEFT, 0, 0); // TOP_LEFT varmistaa vasemman reunan
lv_obj_set_style_bg_color(box, lv_color_white(), 0);
lv_obj_set_style_bg_opa(box, LV_OPA_COVER, 0);
lv_obj_set_style_border_width(box, 0, 0);
lv_obj_set_style_radius(box, 0, 0); // TÄMÄ POISTAA PYÖREÄT KULMAT!
lv_obj_set_style_pad_all(box, 0, 0);
lv_obj_clear_flag(box, LV_OBJ_FLAG_SCROLLABLE);
// text label
counter_label = lv_label_create(scr);
printf("Label created");
lv_label_set_text(counter_label, "00");
lv_obj_set_style_text_color(counter_label, lv_color_white(), 0);
lv_obj_set_style_text_font(counter_label, &lv_font_montserrat_24, 0);
lv_obj_set_style_pad_all(counter_label, 0, 0);
lv_obj_set_style_margin_all(counter_label, 0, 0);
lv_obj_set_width(counter_label, LV_SIZE_CONTENT);
lv_obj_set_style_text_align(counter_label, LV_TEXT_ALIGN_LEFT, 0);
lv_obj_align(counter_label, LV_ALIGN_CENTER, 0, 0);
xTaskCreate(counter_task, "counter_task", 2048, NULL, 5, NULL);
xTaskCreate(counter_task, "counter_task", 2048, NULL, 1, NULL);
printf("Counter task created");
}
void clear_display(void)
{
printf("Clearing display...\n");
i2c_disp_send_cmd(0x21);
i2c_disp_send_cmd(0);
i2c_disp_send_cmd(127);
i2c_disp_send_cmd(0x22);
i2c_disp_send_cmd(0);
i2c_disp_send_cmd(7);
uint8_t zeros[128];
memset(zeros, 0x00, 128);
for (int page = 0; page < 8; page++)
{
i2c_disp_send_data(zeros, 128);
}
printf("Cleared!\n");
}
void draw_text_ok(void)
{
printf("Drawing 'OK'...\n");
uint8_t letter_O[8] = {
0b00000000, // column 0 (tyhjä)
0b01111110, // column 1 (vasen reuna)
0b10000001, // column 2
0b10000001, // column 3
0b10000001, // column 4
0b01111110, // column 5 (oikea reuna)
0b00000000, // column 6 (tyhjä)
0b00000000 // column 7 (väli)
};
// Kirjain K
uint8_t letter_K[8] = {
0b00000000, // column 0 (tyhjä)
0b11111111, // column 1 (pystyviiva)
0b00011000, // column 2
0b00100100, // column 3
0b01000010, // column 4
0b10000001, // column 5
0b00000000, // column 6 (tyhjä)
0b00000000 // column 7
};
// Aseta page 3 (keskellä näyttöä), column 50
i2c_disp_send_cmd(0x21);
i2c_disp_send_cmd(50);
i2c_disp_send_cmd(127);
i2c_disp_send_cmd(0x22);
i2c_disp_send_cmd(3);
i2c_disp_send_cmd(3);
// Lähetä "OK"
i2c_disp_send_data(letter_O, 8);
i2c_disp_send_data(letter_K, 8);
printf("'OK' drawn!\n");
}
void app_main(void){
init_i2c();
vTaskDelay(pdMS_TO_TICKS(100));
vTaskDelay(pdMS_TO_TICKS(50));
init_display();
vTaskDelay(pdMS_TO_TICKS(200));
clear_display();
vTaskDelay(pdMS_TO_TICKS(200));
vTaskDelay(pdMS_TO_TICKS(50));
init_graphics();
vTaskDelay(pdMS_TO_TICKS(500));
clear_display();
vTaskDelay(pdMS_TO_TICKS(200));
vTaskDelay(pdMS_TO_TICKS(50));
xTaskCreate(lv_tick_task, "lv_tick", 4096, NULL, 1, NULL);
xTaskCreate(lv_task, "lv_task", 8192, NULL, 5, NULL);
xTaskCreate(lv_task, "lv_task", 8192, NULL, 3, NULL);
vTaskDelay(pdMS_TO_TICKS(200));
create_counter();
/*while(1){
clear_display();
vTaskDelay(pdMS_TO_TICKS(1000));
draw_text_ok();
vTaskDelay(pdMS_TO_TICKS(1000));
}*/
}