Hi,
I just received a new batch of CoreInk with MAC addresses starting with 4C
and on this batch, if the device is put in deepsleep (with the Arduino shtodown
function from the M5Stack library) the device will not wake up when the power (via the USB-C connector) is applied.
Most of my previous batches had MAC addresses starting with 94
that would properly wake up when the power (via the USB-C connector) is applied.
I tested the exact same code on both batch.
For example, this one failed to power back up when the power is connected after an M5.shutdown:
Chip is ESP32-PICO-D4 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, Embedded Flash, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 4c:75:25:97:98:7c
And this one worked:
Chip is ESP32-PICO-D4 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, Embedded Flash, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 94:b9:7e:92:b3:8c
Any idea or software workaround ?
Thanks.