ESP32-WROOM-32 pin mapping an

tejasgopal
Posts: 3
Joined: Mon Sep 21, 2020 9:43 am

ESP32-WROOM-32 pin mapping an

Postby tejasgopal » Mon Sep 21, 2020 10:07 am

Hello!
We're planning to use ESP32-WROOM-32E in one of our applications. It involves the following peripherals
2xI2C
1xADC
3xGPIOs (2i/p and 1 o/p)
1xUART for debugging and logs
JTAG for programming

We're planning to use the following ports
GPIO25(pin 10) - I2C0_SCL
GPIO26(pin 11) - I2C0_SDA

GPIO2(pin 24) - I2C1_SCL
GPIO4(pin26) - I2C1_SDA

GPIO19(pin31) and GPIO17(pin28) as input GPIOs
GPIO16(pin27) as an output GPIO

Pin 34 as UART_Rx and Pin 35 as UART_TX

Pin 13 as MTMS
Pin 14 as MTDI
Pin 16 as MTCK
Pin 23 as MTDO
for JTAG

It would be very helpful if someone can confirm if this config is OK or do we need to make any changes?

There is no RESET pin/functionality found as such. Isn't it a requirement for JTAG programming?
Also, what would be the I2C clock (SCL) frequency in fast mode?

Thanks and regards!!

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