Any controller that has a UART or SPI interface can be connected to the eS WiFi module.
How do I connect the eS-WiFi UART to my host microcontroller?
The module only require 6 wires to use the UART: TX, RX, Power, Ground and we recommend you also connect Reset and wake-up to your host.
What interfaces do the eS-WiFi modules support?
You can use AT Commands over the UART, SPI or USB HID interface to send commands and send/receive data.
Is the eS-WiFi module’s SPI interface slave or master?
The eS-WiFi SPI interface is a slave.
Do the eS-WiFi L44 modules support SPI mode? What pins should I use to connect SPI?
Yes, the eS-WiFi modules support SPI.
The correct pins to use for the host I/O are the ADC1-ADC4 pins.
- SPI_SCK=ADC2=Pin11
- SPI_MISO=ADC3=Pin10
- SPI_MOSI=ADC4=Pin9
- SPI_NSS=ADC1=Pin12
How do I connect the eS-Wifi module to my host microprocessor via UART?
UART
Connect TX on the Module to RX on your Microcontroller
Connect RX on the Module to TX on your Microcontroller