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ELS61-E-R2 ASC0 -DSR0 is shared with the SPI_CLK line of the SPI interface | Thales IoT Developer Community

March 19, 2019 - 10:07am, 2123 views

Hello experts,

I'm a little bit confuse, I'm reading the hardware interface description of ELS61-E-R2 and I can see that DSR0 in ASC is shared with the SPI_CLK.

I would like to use TXD0 and RXD0 from ASC0 but I also would like to use the SPI. Do you know if is it possible to use both at the same time?

THis is the note which is confusing me:

Note: The ASC0 modem control lines DTR0, DCD0, DSR0 and RING0 are originally available

as GPIO lines. If configured as ASC0 lines, these GPIO lines are assigned as follows:

GPIO1 --> DTR0, GPIO2 --> DCD0, GPIO3 --> DSR0 and GPIO24 --> RING0. Also, DSR0 is

shared with the SPI_CLK line of the SPI interface and may be configured as such. Configuration

is done by AT command

Thanks in advance.

Regards,

Pablo.