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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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62
main/display/eink_display_handler.cpp
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@@ -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;
}
@@ -323,7 +326,7 @@ void EInkDisplayHandler::_perform_full_refresh(const uint8_t* framebuffer) {
gpio_set_level(PIN_DC, 1); // Data mode
ESP_LOGI(TAG, "Starting SPI data transmission for old data (0x10)...");
// Use simpler polling transmission instead of queued to avoid complexity
static uint8_t zero_byte = 0x00; // Static to persist
esp_err_t ret;
@@ -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");
@@ -364,11 +367,11 @@ void EInkDisplayHandler::_perform_full_refresh(const uint8_t* framebuffer) {
gpio_set_level(PIN_DC, 1); // Data mode
ESP_LOGI(TAG, "Starting SPI data transmission for new data (0x13)...");
// Use polling transmission for simplicity and reliability
for (size_t i = 0; i < DISPLAY_BUFFER_SIZE; i++) {
uint8_t data_byte = framebuffer[i]; // Write data directly (no inversion)
spi_transaction_t t = {};
t.length = 8;
t.tx_buffer = &data_byte;
@@ -388,17 +391,19 @@ 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 new data");
xSemaphoreGive(_spi_mutex);
// 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();
@@ -440,7 +445,7 @@ void EInkDisplayHandler::_perform_partial_refresh(const uint8_t* framebuffer) {
gpio_set_level(PIN_DC, 1); // Data mode
ESP_LOGI(TAG, "Starting SPI data transmission for partial refresh...");
// Send data in chunks with task yields to prevent blocking
static uint8_t tx_byte;
const size_t CHUNK_SIZE = 1000; // Send 1000 bytes between yields
@@ -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();
@@ -482,8 +489,15 @@ 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
vTaskDelay(pdMS_TO_TICKS(100));
@@ -491,17 +505,17 @@ void EInkDisplayHandler::_wait_for_busy() {
if (timeout > 100) { // 10 second timeout
ESP_LOGE(TAG, "Display BUSY timeout! Pin level: %d", gpio_get_level(PIN_BUSY));
ESP_LOGW(TAG, "Attempting hardware reset...");
// Hardware reset sequence
gpio_set_level(PIN_RST, 0);
vTaskDelay(pdMS_TO_TICKS(10));
gpio_set_level(PIN_RST, 1);
vTaskDelay(pdMS_TO_TICKS(100));
// Re-initialize display
ESP_LOGI(TAG, "Re-initializing display after reset...");
_epd_init();
// Check if reset worked
int reset_timeout = 0;
while (gpio_get_level(PIN_BUSY) == BUSY_ACTIVE_LEVEL) {
@@ -512,17 +526,17 @@ void EInkDisplayHandler::_wait_for_busy() {
break;
}
}
if (gpio_get_level(PIN_BUSY) != BUSY_ACTIVE_LEVEL) {
ESP_LOGI(TAG, "Display reset successful after %d tenths of a second", reset_timeout);
}
break;
}
// 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));
ESP_LOGW(TAG, "Still waiting for BUSY pin, timeout: %d/100, level: %d",
timeout, gpio_get_level(PIN_BUSY));
}
}
ESP_LOGI(TAG, "Display ready after %d tenths of a second", timeout);