Search found 5 matches

by alpesh_borad
Mon Dec 24, 2018 7:19 am
Forum: Hardware
Topic: ESP32-WROOM-32U\SPI AS SLAVE
Replies: 2
Views: 1396

Re: ESP32-WROOM-32U\SPI AS SLAVE

Hello, At Power ON Condition, XMEGA Keep the SS pin of ESP32 high and Other Slave Low. I have checked the MISO pin on CRO individually, ESP MISO is always low (SS is HIGH) and other Slave device have Data on it(SS is LOW). When I make common MISO by putting Resistors, At power ON, there is Data on M...
by alpesh_borad
Fri Dec 21, 2018 1:48 pm
Forum: Hardware
Topic: ESP32-WROOM-32U\SPI AS SLAVE
Replies: 2
Views: 1396

ESP32-WROOM-32U\SPI AS SLAVE

Hello, In our current project, we have Micro controller XMEGA as a SPI Master and 5 SPI Slave Devices connected. Out of 5, we are using ESP32-WROOM-32U SPI as a slave but the MISO pin of ESP32(GPIO33) affect the functionality of another slave device and break down the communication between Master Mi...
by alpesh_borad
Thu Dec 20, 2018 7:16 am
Forum: Hardware
Topic: ESP32 WROOM32U JTAG AS A GPIO
Replies: 0
Views: 1337

ESP32 WROOM32U JTAG AS A GPIO

Hello, I am using ESP32-WROOM-32U module. Here I want to use JTAG pin either GPIO or JTAG and for that I am IO34(Pin#6) as a Input pin for selection mode. IO34(Pin#6) will detect either 1 or 0. If it will detect 0 then IO12-15 are work as a GPIO and 1 then work as JTAG. This pins are handled by Mux\...
by alpesh_borad
Mon Sep 17, 2018 5:14 am
Forum: Hardware
Topic: Use RMII in ESP32-WROOM-32U
Replies: 3
Views: 1646

Re: Use RMII in ESP32-WROOM-32U

Hello,

Thank you very much for the Answer.

What is the value of Pull up resistor on GPIO0 using as EMAC_TX_CLK.

Have you any reference schematic?

Please provide if you have.

Regards,
Alpesh.
by alpesh_borad
Sat Sep 15, 2018 8:34 am
Forum: Hardware
Topic: Use RMII in ESP32-WROOM-32U
Replies: 3
Views: 1646

Use RMII in ESP32-WROOM-32U

Hello,

I am using RMII mode in ESP32-WROOM-32U using KSZ8041RNL.
According to KSZ8041RNL datasheet, it will give 50MHz clock output which will given to MAC (ESP32-WROOM-32U).
So here how i will connect to MAC (Pin#)?

Regards,
Alpesh.

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