I have a ESP32 Master and ESP32Cam Slave.
The ESP32 Master sends a GPIO wake to the slave and then the slave wakes up and sends a image serially.
Being using this code
https://forum.arduino.cc/t/transfer-pic ... droidblast
The ESP32 Master is a T-SIM7600 with a WRover-B onboard.
Pins exposed are 3.3v not 5v.
Connected to my IDE as Serial Com 6.
Pins 15, 14 receive the image sent serially by the slave ESP32Cam.
I sent a GPIO high from Pin 5 to the slave on Pin 12.
The ESP32Cam is a AL-thinker ESP32CAM.
Research tells me to use 5v to power which I do via a FTDI.
Connected to my IDE as Serial Com 9.
Pins UOR and UOT connect to the FTDI to give me visibility to debug.
Receives a wake via GPIO 5 going high.
Have a common ground between master and slave.
Couple of issues I cant get my head around.
Slave when booting for example below doesnt always boot or wake from sleep.
Code: Select all
17:07:31.406 -> rst:0x10 (RTCWDT_RTC_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
17:07:31.406 -> flash read err, 1000
17:07:31.406 -> ets_main.c 371
17:07:31.735 -> ets Jun 8 2016 00:22:57
17:07:31.735 ->
17:07:31.735 -> rst:0x10 (RTCWDT_RTC_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
17:07:31.735 -> flash read err, 1000
17:07:31.735 -> ets_main.c 371
17:07:32.155 -> ets Jun 8 2016 00:22:57
17:07:32.155 ->
17:07:32.155 -> rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
17:07:32.155 -> configsip: 0, SPIWP:0xee
17:07:32.155 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
17:07:32.155 -> mode:DIO, clock div:1
17:07:32.155 -> load:0x3fff0018,len:4
17:07:32.155 -> load:0x3fff001c,len:1216
17:07:32.155 -> ho 0 tail 12 room 4
17:07:32.155 -> load:0x40078000,len:10944
17:07:32.155 -> load:0x40080400,len:6388
17:07:32.155 -> entry 0x400806b4
17:07:33.755 ->
17:07:35.159 -> ......
17:07:37.693 -> WiFi connectedSlave ESP32Cam is just a webserver with a deep sleep command.
Master ESP32 sends a GPIO high (Pin 5 to slave Pin 12) to wake.
Seems to work as expected.
Issues arise that sometimes I need to reboot master to get code writing to slave or slave doesnt wake, or partially wakes.
So my question is if the am I doing anything wrong from a setup point of view with
Ardindo IDE to the Master ESP32 Com6 (powered by 3.3v usb)
Ardindo to the Slave ESP32Cam Com9 (powered by 5v FTDI/usb)
Common ground between Master and Slave.
The T-Sim7600 needs at least 2a so I have a powered USB hub in place while testing.
I have a USB power monitor so its not a lack of current issue.
Ideas thoughts please?