From b7d2373b0b9bf7e8b5ac3cd3463bdf5b0337898f Mon Sep 17 00:00:00 2001
From: GW_MC <72297530+GWMCwing@users.noreply.github.com>
Date: Thu, 29 Jan 2026 12:46:14 +0800
Subject: [PATCH] fix: enhance error logging for SPI data transfer and display
 chip info

---
 main/display/epd_handler.cpp  | 5 +++++
 main/display/lvgl_handler.cpp | 2 +-
 main/info/info.cpp            | 6 +++++-
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/main/display/epd_handler.cpp b/main/display/epd_handler.cpp
index ad91d45..ca14465 100644
--- a/main/display/epd_handler.cpp
+++ b/main/display/epd_handler.cpp
@@ -222,6 +222,11 @@ esp_err_t EPDHandler::transfer_spi_data(const uint8_t* data, const size_t& lengt
     esp_err_t ret = spi_device_polling_transmit(spi_, &t);
     if (ret != ESP_OK) {
       ESP_LOGE(TAG, "Failed to send SPI chunk at offset %zu: %s", offset, esp_err_to_name(ret));
+      if (ret == ESP_ERR_NO_MEM) {
+        ESP_LOGE(TAG, "Current free heap size: %u bytes", esp_get_free_heap_size());
+        ESP_LOGE(TAG, "Current free DMA-capable memory size: %u bytes",
+          heap_caps_get_free_size(MALLOC_CAP_DMA));
+      }
       return ret;
     }
 
diff --git a/main/display/lvgl_handler.cpp b/main/display/lvgl_handler.cpp
index 2be8eef..f293c51 100644
--- a/main/display/lvgl_handler.cpp
+++ b/main/display/lvgl_handler.cpp
@@ -183,7 +183,7 @@ void LVGLHandler::touch_read_cb_(lv_indev_t* indev, lv_indev_data_t* data) {
     esp_lcd_touch_get_data(tp_handle, point_data, &touch_cnt, 1);
 
     if (touch_cnt > 0) {
-      ESP_LOGI(TAG, "Touch data read successfully: x=%d, y=%d", point_data[0].x, point_data[0].y);
+      // ESP_LOGI(TAG, "Touch data read successfully: x=%d, y=%d", point_data[0].x, point_data[0].y);
       data->point.x = point_data[0].x;
       data->point.y = point_data[0].y;
       data->state = LV_INDEV_STATE_PRESSED;
diff --git a/main/info/info.cpp b/main/info/info.cpp
index 421ae2e..1a35c8c 100644
--- a/main/info/info.cpp
+++ b/main/info/info.cpp
@@ -23,7 +23,8 @@ void display_chip_info() {
     (chip_info.features & CHIP_FEATURE_BLE) ? "BLE" : "",
     (chip_info.features & CHIP_FEATURE_IEEE802154) ? ", 802.15.4 (Zigbee/Thread), " : "",
     // psram
-    (chip_info.features & CHIP_FEATURE_EMB_PSRAM) ? "with embedded PSRAM, " : "");
+    (chip_info.features & CHIP_FEATURE_EMB_PSRAM) ? "with embedded PSRAM, " : ""
+  );
 
   unsigned major_rev = chip_info.revision / 100;
   unsigned minor_rev = chip_info.revision % 100;
@@ -39,5 +40,8 @@ void display_chip_info() {
   printf("Minimum free heap size: %" PRIu32 " bytes\n", esp_get_minimum_free_heap_size());
   // psram
   printf("PSRAM size: %u bytes\n", esp_psram_get_size());
+  // dma size
+  printf("DMA-capable memory size: %u bytes\n", heap_caps_get_free_size(MALLOC_CAP_DMA));
+  printf("DMA-capable internal memory size: %u bytes\n", heap_caps_get_free_size(MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL));
 
 }
\ No newline at end of file