40 pin Header pins for uart_C CTS /RTS

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40 pin Header pins for uart_C CTS /RTS

Unread postby KARL23 » Mon Jul 10, 2017 10:39 pm

Does anybody know which pins of the 40 Pin Header could be used for hardware CTS /RTS of UART_C to connect RS485 Hardware driver?
Which dts changes have to be made in this case?

Thanks in advance.
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Re: 40 pin Header pins for uart_C CTS /RTS

Unread postby odroid » Tue Jul 11, 2017 9:29 am

According to S905 datasheet, UART_C has following connection.
UART_CTS_C : GPIOY_11
UART_RTS_C : GPIOY_12
UART_TX_C : GPIOY_13
UART_RX_C : GPIOY_14

But GPIOY_11 and GPIOY_12 has no exposed connection from the S905 BGA pins to the headers unfortunately.
https://dn.odroid.com/S905/Schematic/od ... 160226.pdf
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Re: 40 pin Header pins for uart_C CTS /RTS

Unread postby KARL23 » Mon Jul 17, 2017 10:59 pm

This is bad.

Are there eventl. any points on the pcb to get access to uart_A CTS RTS?

Thanks
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