User's Manual

page 27/51
HiAll
NC
User Manual 2012/06/28
3.6 SPI
HiAllNC module manages a host SPI interface. This SPI interface is only dedicated for software traces.
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SAGEMCOM strongly recommends leaving this interface externally accessible for SW traces (e.g.
access by test point pads)
In case of needs SAGEMCOM may request to connect a dedicated trace cable to the customer’s electronic
board.
If tests points have been foreseen, simply solder 5 wires to a small HE10 male connector using the following
schematic. This connector will be linked to the dedicated cable and used to log the software traces with a PC
software provided by SAGEMCOM.
Figure 21: SPI HE10 pin – TOP VIEW
3.7 GPIOS
Six GPIOs are available on HiAll
NC
. All GPIOs have optional internal pull-up resistors. Customer applications
can directly access them through appropriate AT commands such as:
• Output: pin is set to High or Low state
• Input: pin is read on request and customer application is responded to.
Different scenarios are possible to cover a maximum range of customer applications:
• Synchronous answer to AT command
• Asynchronous answer to AT command
Customer’s application prior to the read request has configured the GPIO to react to falling/rising edges. The
customer application is notified asynchronously by AT command answer when the configured trigger occurs.
By using other special AT commands, GPIOs can be used to, for example:
• to make an I/O toggling while the module is attached to the network
• to make an I/O toggling when a programmed temperature is reached
• as input to detect the presence of an antenna (with some external additional electronic circuit)
• as input to detect the SIM card presence …etc
GND (White)
SPI_OUT (Red)
SPI_CLK (Yellow)
SPI_IRQ (Green)
SPI_SEL (Brown)
SPI_IN (Black)
VCC_3.7V (Blue)
NC
Male connector located on the Customers' hardware
(HE10 male 8 pins)