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SC16IS752/en: различия между версиями
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(Новая страница: «7 GPIO lines are displayed on the holes in increments of 2.54'' on the mainboard of the Wiren Board controller. A PPS signal from a GPS modem is connected to one…») |
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<languages/> | <languages/> | ||
'''SC16IS752''' is a chip that controls serial ports in some versions of the Wiren Board. | '''SC16IS752''' is a chip that controls serial ports in some versions of the Wiren Board controllers. | ||
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===UART0=== | ===UART0=== | ||
The device in Linux: <b>/dev/ttyNSC0</b>. TX/RX port lines are output to [[ | The device in Linux: <b>/dev/ttyNSC0</b>. TX/RX port lines are output to [[UEXT UEXT2|UEXT UEXT2]]. A half-duplex [[RS-485|RS-485]]-transceiver(if any) is connected to them in parallel. | ||
The direction of operation of the transceiver is set by the chip using the RTS signal automatically, the hardware flow control must be disabled. In future versions of the driver, RS-485 mode may need to be activated from the userspace. | The direction of operation of the transceiver is set by the chip using the RTS signal automatically, the hardware flow control must be disabled. In future versions of the driver, RS-485 mode may need to be activated from the userspace. | ||
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7 GPIO lines are displayed on the holes in increments of 2.54'' on the mainboard of the Wiren Board controller. A PPS signal from a GPS modem is connected to one of the GPIO lines. | 7 GPIO lines are displayed on the holes in increments of 2.54'' on the mainboard of the Wiren Board controller. A PPS signal from a GPS modem is connected to one of the GPIO lines. | ||
[[Special:MyLanguage/Драйвер sc16is7x2| | [[Special:MyLanguage/Драйвер sc16is7x2/en|sc16is7x2 driver]] exports 8 GPIOs into the standard Linux sysfs-interface under numbers 120-127. | ||