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ORCA SOM/ORCA Evaluation Kit/Interfaces and Connectors/GPIOs

1,089 bytes removed, 07:14, 10 November 2021
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==GPIOs interface ==
 
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''
''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''
=== Description ===
The GPIOs interface is available on the Evaluation Kit at the connector ''TBD:Jxxx''J8.
''Jxx'' J8 is a ''TBD:connector-type'' 20x2x2.54mm pin strip header connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console).
|-
|7
|J15.150|SAI2_TXFS|GPIO4_IO24
|
|-
|8
|J15.144|SAI2_RXFS|GPIO4_IO21
|
|-
|10
|J15.140|SAI2_RXC|GPIO4_IO22
|
|-
|11
|J15.142|SAI2_RXD0|GPIO4_IO23
|
|-
|12
|J15.146|SAI2_TXC|GPIO4_IO25
|
|-
|13
|J15.132|SPDIF_RX|GPIO5_IO04
|
|-
|15
|J15.134|SPDIF_TX|GPIO5_IO03
|
|-
|16
|J15.148|SAI2_TXD0|GPIO4_IO26
|
|-
|18
|J15.138|SAI2_MCLK|GPIO4_IO27
|
|-
|19
|J15.122
|ECSPI2_MOSI
|I2C3_SDAGPIO5_IO11
|
|-
|21
|J15.120
|ECSPI2_MISO
|I2C4_SCLGPIO5_IO12
|
|-
|22
|J15.166
|SAI5_MCLK
|I2C5_SDAGPIO3_IO25
|
|-
|23
|J15.124
|ECSPI2_SCLK
|I2C3_SCLGPIO5_IO10
|
|-
|24
|J15.126
|ECSPI2_SS0
|I2C4_SDAGPIO5_IO13
|
|-
|26
|J15.130|SPDIF_EXT_CLK|GPIO5_IO05
|
|-
|27
|J15.248|UART2_RXD|GPIO5_IO24
|
|-
|28
|J15.152|SAI3_MCLK|GPIO5_IO02
|
|-
|29
|J15.250|UART2_TXD|GPIO5_IO25
|
|-
|31
|J15.256|UART4_RXD|GPIO5_IO28
|
|-
|32
|J15.178
|SAI5_RXFS
|I2C6_SCLGPIO3_IO19
|
|-
|33
|J15.258|UART4_TXD|GPIO5_IO29
|
|-
|35
|J15.176|SAI5_RXD3|GPIO3_IO24
|
|-
|36
|J15.174|SAI5_RXD2|GPIO3_IO23
|
|-
|37
|J15.172|SAI5_RXD1|GPIO3_IO22
|
|-
|38
|J15.170
|SAI5_RXD0
|I2C5_SCLGPIO3_IO21
|
|-
|40
|J15.168
|SAI5_RXC
|I2C6_SDAGPIO3_IO20
|
|-
|
|}
All the GPIO signals are 0-3.3V level.
 
=== Device mapping ===
UART3 is GPIOs are mapped to into banks each of which contains 32 pins. They are named as GPIO<codebank>/dev/ttymxc2_IO</codepin> device in Linux. The peripheral is used  Each pin can be addressed with an incremental number, calculated as the default serial console, both for the bootloader and the kernel.follows: GPIO = 32 x (<bank> - 1) + <pin>
=== Device usage ===
To connect to Under Linux the debug serial port: # connect GPIOs can be manipulated su sysfs export or with the DB9 adapter bracket to the J22 connector on the SBCX board# connect a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1gpio tools.
----
[[Category:ORCA SOM]]
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