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Fix display not init

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This commit is contained in:
GW_MC
2026-01-25 18:57:41 +08:00
parent 259660a0bc
commit 5865f6d383
2 changed files with 52 additions and 27 deletions
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17
main/display/display.cpp
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@@ -118,12 +118,23 @@ void DisplayHandler::_epd_init(void) {
epd_write_cmd(0x04); // Power ON
vTaskDelay(pdMS_TO_TICKS(100)); // Wait for power on
// Check BUSY pin
ESP_LOGI("DisplayHandler", "Waiting for EPD to be ready...");
// Check BUSY pin with detailed logging
ESP_LOGI("DisplayHandler", "Waiting for EPD to be ready after power on...");
ESP_LOGI("DisplayHandler", "BUSY pin level after power on: %d (0=BUSY, 1=FREE)", gpio_get_level(PIN_BUSY));
int busy_timeout = 0;
while (gpio_get_level(PIN_BUSY) == BUSY_ACTIVE_LEVEL) { // BUSY is active LOW
vTaskDelay(pdMS_TO_TICKS(10));
busy_timeout++;
if (busy_timeout > 500) { // 5 second timeout
ESP_LOGE("DisplayHandler", "EPD power on timeout! BUSY pin stuck at 0");
break;
}
if (busy_timeout % 50 == 0) { // Log every 500ms
ESP_LOGW("DisplayHandler", "Still waiting for EPD power on, timeout: %d/500", busy_timeout);
}
}
ESP_LOGI("DisplayHandler", "EPD is ready.");
ESP_LOGI("DisplayHandler", "EPD power on complete after %d * 10ms, BUSY pin: %d", busy_timeout, gpio_get_level(PIN_BUSY));
const uint8_t booster_data[] = { 0x27, 0x27, 0x18, 0x17 };
epd_write_cmd_with_data(0x06, booster_data, 4); // Booster Soft Start
vTaskDelay(pdMS_TO_TICKS(10));

38
main/display/eink_display_handler.cpp
View File

@@ -52,10 +52,10 @@ void EInkDisplayHandler::init() {
io_conf.intr_type = GPIO_INTR_DISABLE;
gpio_config(&io_conf);
// Configure BUSY pin as input
// Configure BUSY pin as input (no pull-up like sample code)
io_conf.pin_bit_mask = (1ULL << PIN_BUSY);
io_conf.mode = GPIO_MODE_INPUT;
io_conf.pull_up_en = GPIO_PULLUP_ENABLE;
io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
gpio_config(&io_conf);
// Initialize SPI bus
@@ -198,9 +198,12 @@ void EInkDisplayHandler::_lvgl_flush_cb(lv_display_t* disp, const lv_area_t* are
return;
}
// Check if display is busy
// Check if display is busy with detailed logging
int busy_level = gpio_get_level(PIN_BUSY);
ESP_LOGI(TAG, "Flush callback: BUSY pin = %d, is_busy() = %d", busy_level, handler->is_busy());
if (handler->is_busy()) {
ESP_LOGW(TAG, "Display busy, skipping flush");
ESP_LOGW(TAG, "Display busy (BUSY pin = 0), skipping flush");
lv_display_flush_ready(disp);
return;
}
@@ -347,8 +350,8 @@ void EInkDisplayHandler::_perform_full_refresh(const uint8_t* framebuffer) {
return;
}
gpio_set_level(PIN_DC, 1); // Re-set data mode after yield
ESP_LOGI(TAG, "Transmitted %zu/%zu bytes (%.1f%%)", i+1, DISPLAY_BUFFER_SIZE,
(float)(i+1) * 100.0f / DISPLAY_BUFFER_SIZE);
ESP_LOGI(TAG, "Transmitted %zu/%zu bytes (%.1f%%)", i + 1, DISPLAY_BUFFER_SIZE,
(float)(i + 1) * 100.0f / DISPLAY_BUFFER_SIZE);
}
}
ESP_LOGI(TAG, "Completed SPI data transmission for old data");
@@ -388,8 +391,8 @@ void EInkDisplayHandler::_perform_full_refresh(const uint8_t* framebuffer) {
return;
}
gpio_set_level(PIN_DC, 1); // Re-set data mode after yield
ESP_LOGI(TAG, "Transmitted %zu/%zu bytes (%.1f%%)", i+1, DISPLAY_BUFFER_SIZE,
(float)(i+1) * 100.0f / DISPLAY_BUFFER_SIZE);
ESP_LOGI(TAG, "Transmitted %zu/%zu bytes (%.1f%%)", i + 1, DISPLAY_BUFFER_SIZE,
(float)(i + 1) * 100.0f / DISPLAY_BUFFER_SIZE);
}
}
@@ -398,7 +401,9 @@ void EInkDisplayHandler::_perform_full_refresh(const uint8_t* framebuffer) {
// Step 3: Trigger display refresh (DRF)
epd_write_cmd(0x12);
// Critical delay - sample code says "!!!The delay here is necessary, 200uS at least!!!"
vTaskDelay(pdMS_TO_TICKS(10));
ESP_LOGI(TAG, "Display refresh triggered, BUSY pin: %d", gpio_get_level(PIN_BUSY));
// Wait for refresh to complete
_wait_for_busy();
@@ -460,8 +465,8 @@ void EInkDisplayHandler::_perform_partial_refresh(const uint8_t* framebuffer) {
return;
}
gpio_set_level(PIN_DC, 1); // Re-set data mode after yield
ESP_LOGI(TAG, "Partial refresh progress: %zu/%zu bytes (%.1f%%)", i+1, DISPLAY_BUFFER_SIZE,
(float)(i+1) * 100.0f / DISPLAY_BUFFER_SIZE);
ESP_LOGI(TAG, "Partial refresh progress: %zu/%zu bytes (%.1f%%)", i + 1, DISPLAY_BUFFER_SIZE,
(float)(i + 1) * 100.0f / DISPLAY_BUFFER_SIZE);
}
}
ESP_LOGI(TAG, "Completed SPI data transmission for partial refresh");
@@ -469,7 +474,9 @@ void EInkDisplayHandler::_perform_partial_refresh(const uint8_t* framebuffer) {
// Step 5: Trigger partial display refresh (DRF)
epd_write_cmd(0x12);
// Critical delay - sample code says "!!!The delay here is necessary, 200uS at least!!!"
vTaskDelay(pdMS_TO_TICKS(10));
ESP_LOGI(TAG, "Partial refresh triggered, BUSY pin: %d", gpio_get_level(PIN_BUSY));
// Wait for refresh to complete
_wait_for_busy();
@@ -482,7 +489,14 @@ void EInkDisplayHandler::_perform_partial_refresh(const uint8_t* framebuffer) {
void EInkDisplayHandler::_wait_for_busy() {
ESP_LOGI(TAG, "Waiting for display ready (BUSY pin)...");
ESP_LOGI(TAG, "Initial BUSY pin level: %d", gpio_get_level(PIN_BUSY));
int initial_level = gpio_get_level(PIN_BUSY);
ESP_LOGI(TAG, "Initial BUSY pin level: %d (0=BUSY, 1=FREE)", initial_level);
// If already free, no need to wait
if (initial_level == BUSY_INACTIVE_LEVEL) {
ESP_LOGI(TAG, "Display already ready (BUSY pin = 1)");
return;
}
int timeout = 0;
while (gpio_get_level(PIN_BUSY) == BUSY_ACTIVE_LEVEL) { // 0=BUSY, 1=FREE
@@ -522,7 +536,7 @@ void EInkDisplayHandler::_wait_for_busy() {
// Log every 2 seconds to track progress
if (timeout % 20 == 0) {
ESP_LOGW(TAG, "Still waiting for BUSY pin, timeout: %d/100, level: %d",
timeout, gpio_get_level(PIN_BUSY));
timeout, gpio_get_level(PIN_BUSY));
}
}
ESP_LOGI(TAG, "Display ready after %d tenths of a second", timeout);