ESP32-WROOM-32 pin mapping an
Posted: 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!!
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!!