code doesn't upload - warning: espcomm_sync failed

[lfrancois]

ludo@idefix:.../esp8266/esp8266-dht22-sensor % platformio run -t upload                                                       
Building .pioenvs/esp01/firmware.bin
Looking for upload port...
Auto-detected: /dev/cu.SLAB_USBtoUART
Uploading .pioenvs/esp01/firmware.bin
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
*** [upload] Error 255
======================================================= [ERROR] Took 17.42 seconds =======================================================
ludo@idefix:.../esp8266/esp8266-dht22-sensor % 

[lfrancois]

Fixed! In changing the board type, I use a NodeMCU board.

ludo@idefix:.../esp8266/esp8266-dht22-sensor % git diff                                                                       22:03 #4327
diff --git a/platformio.ini b/platformio.ini
index 123995e..10c0333 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -18,9 +18,10 @@
 # targets = upload
 
 [env:esp01]
-platform = espressif
+platform = espressif8266
 framework = arduino
-board = esp01
+board = esp12e
 targets = upload
 # Optimize for binary size
 #build_flags=-Os
+lib_deps = 19
ludo@idefix:.../esp8266/esp8266-dht22-sensor % ```