sirian/oled-counter-esp32
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add parallelism

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This commit is contained in:
Elias Ahokas
2025-10-18 20:56:33 +03:00
parent c2aabfd227
commit d8baf5370c
1 changed files with 58 additions and 39 deletions
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97
main/main.c
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@@ -15,9 +15,15 @@
#define DISP_ADDRESS 0X3c #define DISP_ADDRESS 0X3c
#define I2C_FREQ 400000 #define I2C_FREQ 400000
typedef struct {
uint8_t page_num;
uint8_t data[128];
} page_data_t;
static i2c_master_dev_handle_t disp_handle; static i2c_master_dev_handle_t disp_handle;
static lv_obj_t *counter_label; static lv_obj_t *counter_label;
static SemaphoreHandle_t flush_sem = NULL; static SemaphoreHandle_t flush_sem = NULL;
static QueueHandle_t page_queue = NULL;
static uint8_t lv_buf[(128 * 64/8)+8]; static uint8_t lv_buf[(128 * 64/8)+8];
void init_i2c(void){ void init_i2c(void){
@@ -44,7 +50,7 @@ void init_i2c(void){
} }
void i2c_disp_send_cmd(uint8_t cmd){ void disp_send_cmd(uint8_t cmd){
uint8_t data[2] = {0x00, cmd}; /*command mode*/ uint8_t data[2] = {0x00, cmd}; /*command mode*/
i2c_master_transmit(disp_handle, data, sizeof(data), pdMS_TO_TICKS(1000)); i2c_master_transmit(disp_handle, data, sizeof(data), pdMS_TO_TICKS(1000));
@@ -52,7 +58,7 @@ void i2c_disp_send_cmd(uint8_t cmd){
} }
void i2c_disp_send_data(uint8_t *data, size_t len){ void disp_send_data(uint8_t *data, size_t len){
uint8_t *buf = malloc(len+1); uint8_t *buf = malloc(len+1);
buf[0] = 0x40; /*data mode*/ buf[0] = 0x40; /*data mode*/
memcpy(&buf[1], data, len); memcpy(&buf[1], data, len);
@@ -61,48 +67,64 @@ void i2c_disp_send_data(uint8_t *data, size_t len){
free(buf); free(buf);
} }
void send_page_task(void *arg){
page_data_t page;
while(1){
if(xQueueReceive(page_queue, &page, portMAX_DELAY)){
disp_send_cmd(0x21);
disp_send_cmd(0);
disp_send_cmd(127);
disp_send_cmd(0x22);
disp_send_cmd(page.page_num);
disp_send_cmd(page.page_num);
disp_send_data(page.data, 128);
}
}
}
void init_display(void){ void init_display(void){
i2c_disp_send_cmd(0xAE); // Display OFF disp_send_cmd(0xAE); // Display OFF
i2c_disp_send_cmd(0xD5); // Set display clock divide ratio/oscillator frequency disp_send_cmd(0xD5); // Set display clock divide ratio/oscillator frequency
i2c_disp_send_cmd(0x80); // Default value disp_send_cmd(0x80); // Default value
i2c_disp_send_cmd(0xA8); // Set multiplex ratio disp_send_cmd(0xA8); // Set multiplex ratio
i2c_disp_send_cmd(0x3F); // 1/64 duty (64 COM lines) disp_send_cmd(0x3F); // 1/64 duty (64 COM lines)
i2c_disp_send_cmd(0xD3); // Set display offset disp_send_cmd(0xD3); // Set display offset
i2c_disp_send_cmd(0x00); // No offset disp_send_cmd(0x00); // No offset
i2c_disp_send_cmd(0x40); // Set display start line to 0 disp_send_cmd(0x40); // Set display start line to 0
i2c_disp_send_cmd(0x8D); // Charge pump setting disp_send_cmd(0x8D); // Charge pump setting
i2c_disp_send_cmd(0x14); // Enable charge pump disp_send_cmd(0x14); // Enable charge pump
i2c_disp_send_cmd(0x20); // Set Memory Addressing Mode disp_send_cmd(0x20); // Set Memory Addressing Mode
i2c_disp_send_cmd(0x00); // Horizontal addressing mode disp_send_cmd(0x00); // Horizontal addressing mode
i2c_disp_send_cmd(0xA1); // Set segment re-map (A0h/A1h) disp_send_cmd(0xA1); // Set segment re-map (A0h/A1h)
i2c_disp_send_cmd(0xC8); // Set COM output scan direction disp_send_cmd(0xC8); // Set COM output scan direction
i2c_disp_send_cmd(0xDA); // Set COM pins hardware configuration disp_send_cmd(0xDA); // Set COM pins hardware configuration
i2c_disp_send_cmd(0x12); // Alternative COM pin config disp_send_cmd(0x12); // Alternative COM pin config
i2c_disp_send_cmd(0x81); // Set contrast control disp_send_cmd(0x81); // Set contrast control
i2c_disp_send_cmd(0xCF); // Max contrast disp_send_cmd(0xCF); // Max contrast
i2c_disp_send_cmd(0xD9); // Set pre-charge period disp_send_cmd(0xD9); // Set pre-charge period
i2c_disp_send_cmd(0xF1); // Phase 1: 15 DCLK, Phase 2: 15 DCLK disp_send_cmd(0xF1); // Phase 1: 15 DCLK, Phase 2: 15 DCLK
i2c_disp_send_cmd(0xDB); // Set VCOMH deselect level disp_send_cmd(0xDB); // Set VCOMH deselect level
i2c_disp_send_cmd(0x40); // ~0.77 x VCC disp_send_cmd(0x40); // ~0.77 x VCC
i2c_disp_send_cmd(0xA4); // Entire display ON (resume to RAM content) disp_send_cmd(0xA4); // Entire display ON (resume to RAM content)
i2c_disp_send_cmd(0xA6); // Set normal display (not inverted) disp_send_cmd(0xA6); // Set normal display (not inverted)
i2c_disp_send_cmd(0x2E); // Deactivate scroll disp_send_cmd(0x2E); // Deactivate scroll
i2c_disp_send_cmd(0xAF); // Display ON disp_send_cmd(0xAF); // Display ON
} }
void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map){ void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_map){
@@ -146,14 +168,10 @@ void lvgl_flush_callback(lv_display_t *disp, const lv_area_t *area, uint8_t *px_
} }
if((i+1)% bytes_per_page == 0 && i+1 != 0){ if((i+1)% bytes_per_page == 0 && i+1 != 0){
/*page finished => send to display*/ /*page finished => send to display*/
i2c_disp_send_cmd(0x21); page_data_t page_data;
i2c_disp_send_cmd(0); page_data.page_num = page;
i2c_disp_send_cmd(127); memcpy(page_data.data, buf, 128);
i2c_disp_send_cmd(0x22); xQueueSend(page_queue, &page_data, portMAX_DELAY);
i2c_disp_send_cmd(page);
i2c_disp_send_cmd(page);
i2c_disp_send_data(buf, sizeof(buf));
memset(buf, 0, sizeof(buf)); memset(buf, 0, sizeof(buf));
page++; page++;
page_y = 0; page_y = 0;
@@ -170,15 +188,15 @@ void init_graphics(void){
xSemaphoreGive(flush_sem); xSemaphoreGive(flush_sem);
} }
page_queue = xQueueCreate(8, sizeof(page_data_t));
memset(lv_buf, 0, sizeof(lv_buf)); memset(lv_buf, 0, sizeof(lv_buf));
lv_init(); lv_init();
lv_display_t *display = lv_display_create(128, 64); lv_display_t *display = lv_display_create(128, 64);
lv_display_set_color_format(display, LV_COLOR_FORMAT_I1); lv_display_set_color_format(display, LV_COLOR_FORMAT_I1);
lv_display_set_flush_cb(display, lvgl_flush_callback); lv_display_set_flush_cb(display, lvgl_flush_callback);
lv_display_set_buffers(display, lv_buf, NULL, sizeof(lv_buf), LV_DISPLAY_RENDER_MODE_FULL); lv_display_set_buffers(display, lv_buf, NULL, sizeof(lv_buf), LV_DISPLAY_RENDER_MODE_FULL);
lv_obj_t *scr = lv_screen_active(); lv_obj_t *scr = lv_screen_active();
@@ -251,10 +269,11 @@ void app_main(void){
init_graphics(); init_graphics();
vTaskDelay(pdMS_TO_TICKS(50)); vTaskDelay(pdMS_TO_TICKS(50));
xTaskCreate(send_page_task, "page_send", 4096, NULL, 2, NULL);
xTaskCreate(lv_tick_task, "lv_tick", 4096, NULL, 1, NULL); xTaskCreate(lv_tick_task, "lv_tick", 4096, NULL, 1, NULL);
xTaskCreate(lv_task, "lv_task", 8192, NULL, 3, NULL); xTaskCreate(lv_task, "lv_task", 8192, NULL, 3, NULL);
vTaskDelay(pdMS_TO_TICKS(150)); vTaskDelay(pdMS_TO_TICKS(200));
create_counter(); create_counter();
} }