RIALTO SBC/Interfaces and Connectors/Led and buttons
< RIALTO SBC
Revision as of 17:44, 13 January 2024 by U0007 (talk | contribs) (Created page with "<section begin="History" /> {| style="border-collapse:collapse; " ! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History |- ! style="bo...")
| HOME | SOMs | SBCs | ToloMEO Embedded Assistant |  GET A QUOTE
|
 ONLINE HELPDESK
|
| Roadmap | IoT Services | ML/AI services | Embedded Design Services |
| History | |||
|---|---|---|---|
| Issue Date | Notes | ||
| 2024/01/13 | First documentation release | ||
Contents
Led and buttons connector[edit | edit source]
Description[edit | edit source]
RIALTO SBC can drive up to five leds and detect two key buttons at the expansion connector J70.
J71 is a 10x1x2.54mm pin strip header connector.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | Pin name | Alternate function | GPIO | Pin notes |
|---|---|---|---|---|
| 1 | VIN | |||
| 2 | PMIC_5V | |||
| 3 | 3V3_AUX | |||
| 4 | VDD_ADC | |||
| 5 | GPIO1_IO01 | WDOG1_WDOG_B | GPIO1_IO01 | |
| 6 | GPIO1_IO02 | I2C1_SCL | GPIO1_IO02 | |
| 7 | GPIO1_IO03 | I2C1_SDA | GPIO1_IO03 | |
| 8 | GPIO1_IO04 | UART5_TX, PWM3 | GPIO1_IO04 | |
| 9 | GPIO1_IO05 | UART5_RX, PWM4 | GPIO1_IO05 | |
| 10 | DGND | Ground |
All the GPIO signals are 0-3.3V level.
Device mapping[edit | edit source]
GPIOs are mapped into banks each of which contains 32 pins. They are named as GPIO<bank>_IO<pin>
Each pin can be addressed with an incremental number, calculated as follows: GPIO = 32 x (<bank> - 1) + <pin>
Device usage[edit | edit source]
Under Linux the GPIOs can be manipulated su sysfs export or with the gpiod tools in Linux.
