From 41c509a76114b3b801d4169d44f73e710516605c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?King=20K=C3=A9vin?= <kingkevin@cuvoodoo.info>
Date: Sat, 23 Jul 2022 12:57:57 +0200
Subject: [PATCH] dfu: add logging

---
 examples/device/dfu_freertos/src/main.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/examples/device/dfu_freertos/src/main.c b/examples/device/dfu_freertos/src/main.c
index 6813a57a6..69d0bb0ec 100644
--- a/examples/device/dfu_freertos/src/main.c
+++ b/examples/device/dfu_freertos/src/main.c
@@ -39,6 +39,7 @@
   #include "freertos/queue.h"
   #include "freertos/task.h"
   #include "freertos/timers.h"
+  #include "esp_log.h"
 
   #define USBD_STACK_SIZE     4096
 #else
@@ -52,6 +53,8 @@
   #define USBD_STACK_SIZE    (3*configMINIMAL_STACK_SIZE/2) * (CFG_TUSB_DEBUG ? 2 : 1)
 #endif
 
+static const char* TAG = "DFU";
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@@ -106,6 +109,8 @@ int main(void)
   vTaskStartScheduler();
 #endif
 
+  ESP_LOGI(TAG, "DFU mode");
+
   return 0;
 }
 
@@ -194,9 +199,11 @@ uint32_t tud_dfu_get_timeout_cb(uint8_t alt, uint8_t state)
 void tud_dfu_download_cb(uint8_t alt, uint16_t block_num, uint8_t const* data, uint16_t length)
 {
   esp_err_t rc;
+  ESP_LOGD(TAG, "download, alt=%u block=%u", alt, block_num);
 
   if (alt > 0)
   {
+    ESP_LOGW(TAG, "download to invalid alt %u", alt);
     tud_dfu_finish_flashing(DFU_STATUS_ERR_ADDRESS);
     return;
   }
@@ -212,6 +219,7 @@ void tud_dfu_manifest_cb(uint8_t alt)
 {
   (void) alt;
   esp_err_t rc;
+  ESP_LOGI(TAG, "download completed, enter manifestation");
 
   // flashing op for manifest is complete without error
   // Application can perform checksum, should it fail, use appropriate status such as errVERIFY.
@@ -226,6 +234,7 @@ uint16_t tud_dfu_upload_cb(uint8_t alt, uint16_t block_num, uint8_t* data, uint1
   uint16_t xfer_len = 0;
 
   if (alt > 0) {
+    ESP_LOGW(TAG, "upload unknown alt %u", alt);
     return 0;
   }
 
@@ -236,11 +245,13 @@ uint16_t tud_dfu_upload_cb(uint8_t alt, uint16_t block_num, uint8_t* data, uint1
 void tud_dfu_abort_cb(uint8_t alt)
 {
   (void) alt;
+  ESP_LOGI(TAG, "host aborted transfer");
 }
 
 // Invoked when a DFU_DETACH request is received
 void tud_dfu_detach_cb(void)
 {
+  ESP_LOGI(TAG, "host detach -> reboot");
   esp_restart();
 }