esp32/Makefile: Add "erase" target for convenient erasure.

dpgeorge · dpgeorge · commit 67a1d47b94f6 · 2016-12-19T13:06:45.000+11:00
diff --git a/esp32/Makefile b/esp32/Makefile
@@ -516,7 +516,7 @@ SRC_QSTR_AUTO_DEPS +=
 
 all: $(BUILD)/bootloader.bin $(BUILD)/partitions.bin $(BUILD)/application.bin
 
-.PHONY: idf-version deploy
+.PHONY: idf-version deploy erase
 
 idf-version:
 	$(ECHO) "IDF version: f807d16310719b0dcef07de0276934653b6e48ed"
@@ -525,6 +525,10 @@ deploy: $(BUILD)/bootloader.bin $(BUILD)/partitions.bin $(BUILD)/application.bin
 	$(ECHO) "Writing $^ to the board"
 	$(Q)$(ESPTOOL) --chip esp32 --port $(PORT) --baud $(BAUD) write_flash -z --flash_mode $(FLASH_MODE) --flash_freq $(FLASH_FREQ) --flash_size $(FLASH_SIZE) 0x1000 $(BUILD)/bootloader.bin 0x8000 $(BUILD)/partitions.bin 0x10000 $(BUILD)/application.bin
 
+erase:
+	$(ECHO) "Erasing flash"
+	$(Q)$(ESPTOOL) --chip esp32 --port $(PORT) --baud $(BAUD) erase_flash
+
 $(BUILD)/esp32_out.ld: sdkconfig.h
 	$(Q)$(CC) -I. -C -P -x c -E $(ESPIDF)/components/esp32/ld/esp32.ld -o $@
 
