Difference between revisions of "ETRA SOM/ETRA Hardware/Peripherals/GPIOs"
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=== Description === | === Description === | ||
| − | The primary GPIOs interface available on ETRA | + | The primary GPIOs interface available on ETRA SOM is based on STM32MP1 SoC. |
The STM32MP1 GPIO ports supports the following standards and features: | The STM32MP1 GPIO ports supports the following standards and features: | ||
| Line 36: | Line 36: | ||
A secondary GPIOs interface available on ETRA SoM is based on ADP5589 I/O expander. This expander is controlled by an internal I2C BUS. | A secondary GPIOs interface available on ETRA SoM is based on ADP5589 I/O expander. This expander is controlled by an internal I2C BUS. | ||
| − | + | ==== Additional GPIO interface ==== | |
| + | ETRA SOM has an optional device, ADP5589 GPIO port, which supports the following standards and features: | ||
| + | |||
* output states: push-pull or open drain + pull-up/down | * output states: push-pull or open drain + pull-up/down | ||
* input states: floating, pull-up/down, IRQ | * input states: floating, pull-up/down, IRQ | ||
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* clock divider | * clock divider | ||
* reset generators | * reset generators | ||
| + | |||
| + | Please refer to the [[ETRA_SOM/Part_number_composition | ETRA Part number composition]] for the related order code option. | ||
===Pin mapping=== | ===Pin mapping=== | ||
Revision as of 15:58, 5 January 2021
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| Version | Issue Date | Notes | |
| 1.0.0 | Dec 2020 | First Release | |
Peripheral GPIOs[edit | edit source]
The general-purpose input/output (GPIO) peripheral provides dedicated general-purpose pins that can be configured as either inputs or outputs.
Description[edit | edit source]
The primary GPIOs interface available on ETRA SOM is based on STM32MP1 SoC.
The STM32MP1 GPIO ports supports the following standards and features:
- output states: push-pull or open drain + pull-up/down
- speed selection for each I/O
- input states: floating, pull-up/down, analog
- bit set and reset register for atomic read/modify access
- analog function
- fast toggle capable of changing every two clock cycles
- external interrupt capability (unavailable in analog mode)
A secondary GPIOs interface available on ETRA SoM is based on ADP5589 I/O expander. This expander is controlled by an internal I2C BUS.
Additional GPIO interface[edit | edit source]
ETRA SOM has an optional device, ADP5589 GPIO port, which supports the following standards and features:
- output states: push-pull or open drain + pull-up/down
- input states: floating, pull-up/down, IRQ
- keypad decoding for matrix up to 11 × 8
- key press/release interrupts
- dual programmable logic blocks
- PWM generator
- clock divider
- reset generators
Please refer to the ETRA Part number composition for the related order code option.
Pin mapping[edit | edit source]
The Pin mapping is described in the Pinout table section
