Every I2C device needs a driver. The ESP I2C APi just write data to the device. For memory read or write there is a register on the memory device that holds the memory address you want accessed. Look at the I2C device, find the part number and then find the documentation for that part . that should ...

Seeed Xiao ESP32C3 is a good choice. but to reduce power consumption, sleep mode is necessary.

I am trying to use examples/https_request. I changed the server_root_cert.pem to my own CA root cert. I created a server cert using an intermediate cert. CA root => intermediate cert => server cert. The error -0x2700 is MBEDTLS_X509_BADCERT_CN_MISMATCH https://forums.mbed.com/t/x509-verify-cert-retu...