Difference between revisions of "ETRA SOM/ETRA Evaluation Kit/Interfaces and Connectors/GPIOs"
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! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History | ! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History | ||
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! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes | ! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes | ||
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=== Description === | === Description === | ||
| − | STM32MP1 can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell. | + | STM32MP1 can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell. |
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| + | [[File:ETRA-EVK-GPIOs-connector.png|thumb|center|300px|GPIOsconnector]] | ||
===Signals === | ===Signals === | ||
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=== Device usage === | === Device usage === | ||
| − | See the [[ | + | See the [[DESK-MP1-L/Peripherals/GPIOs|GPIOs]] page on the [[DESK-MP1-L|DESK-MP1-L]] Software Manual. |
---- | ---- | ||
[[Category:ETRA]] | [[Category:ETRA]] | ||
Latest revision as of 12:51, 23 April 2024
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| 2021/01/14 | First Release | ||
GPIOs interface[edit | edit source]
Description[edit | edit source]
STM32MP1 can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell.
Signals[edit | edit source]
The following table describes some GPIOs signals available on J12 (2x15x2.54mm) connector:
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 3 | J18.97 | PD13 | ||
| 5 | J18.99 | PD12 | ||
| 6 | J18.34 | PB13 | ||
| 7 | J18.101 | PD11 | ||
| 8 | J18.68 | PB5 | ||
| 9 | J18.105 | PG9 | ||
| 12 | J18.48 | PA12 | ||
| 14 | J18.38 | PA11 | ||
| 18 | J18.80 | PF6 | ||
| 20 | J18.76 | PF9 | ||
| 22 | J18.74 | PF7 | ||
| 24 | J18.78 | PF8 | ||
| 26 | J18.181 | PD6 | ||
| 28 | J18.28 | PA9 |
Device mapping[edit | edit source]
GPIOs can be used directly on Linux kernel device driver or can be configured on the device tree.
Device usage[edit | edit source]
See the GPIOs page on the DESK-MP1-L Software Manual.
