I am using a 5v 1A wallwart to power the ESP via LM1117 3.3v.
After trying to upload a program to the ESP via Arduino IDE, things changed. Now it flashes once, and I get no response to AT commands. No echo at all.
When I put the ESP into flash mode (GPIO0 low), I just get:
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ets Jan 8 2013,rst cause:2, boot mode:(1,7)
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ets Jan 8 2013,rst cause:2, boot mode:(3,7)
ets_main.c
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Clinic:esptool-master fedfull$ sudo python esptool.py --baud 921600 --port /dev/tty.usbserial-A50285BI write_flash -fm dio 0x00000 /esptool-master/v20ATFirmwareESP.bin
esptool.py v1.3-dev
Connecting...
Auto-detected Flash size: 8m
Running Cesanta flasher stub...
A fatal error occurred: Timed out waiting for packet header
On further testing:
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Clinic:~ fed$ esptool.py --baud 115200 --port /dev/tty.usbserial-A50285BI flash_id
esptool.py v1.3-dev
Connecting...
Manufacturer: e0
Device: 4014
Clinic:~ fed$ esptool.py --baud 115200 --port /dev/tty.usbserial-A50285BI chip_id
esptool.py v1.3-dev
Connecting...
Chip ID: 0x001eb645
Clinic:~ fed$ esptool.py --baud 115200 --port /dev/tty.usbserial-A50285BI read_mac
esptool.py v1.3-dev
Connecting...
MAC: 5c:cf:7f:1e:b6:45
Clinic:~ fed$ esptool.py --baud 115200 --port /dev/tty.usbserial-A50285BI erase_flash
esptool.py v1.3-dev
Connecting...
Running Cesanta flasher stub...
A fatal error occurred: Timed out waiting for packet header
Does the blue led flashing once only mean anything? Any idea what I've done wrong.