ETRA SOM/ETRA Evaluation Kit/Interfaces and Connectors/GPIOs
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| History | |||
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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.
