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tutorials:common:how_to_use_the_uart [2014/03/26 18:23] allen |
tutorials:common:how_to_use_the_uart [2014/06/09 19:52] (current) allen |
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===== Abstract ===== | ===== Abstract ===== | ||
- | Here is the guide to teach that open the uart port on cubiboard and how to test the uart port whether available | + | Here is the guide to teach that how to enable the uart port on cubiboard and how to test the uart port is available . |
- | + | ||
- | In this guide using the cubietruck as example . | + | |
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Cubieboard 1 2 [[http://docs.cubieboard.org/cubieboard1_and_cubieboard2_gpio_pin]] | Cubieboard 1 2 [[http://docs.cubieboard.org/cubieboard1_and_cubieboard2_gpio_pin]] | ||
+ | Fex Guide [[http://linux-sunxi.org/Fex_Guide]] | ||
===== Open the port ===== | ===== Open the port ===== | ||
<code> | <code> | ||
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After the reboot ,the uart3 and uart4 are available. | After the reboot ,the uart3 and uart4 are available. | ||
- | <note tip> **remember save as scrpit.bin and reboot**</note> | + | <note tip> **remember save as script.bin and reboot**</note> |
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</code> | </code> | ||
+ | The uart0 3 4 5 6 are available in Cubieboard1 and Cubieboard2 ,while uart0 3 4 7 are available in Cubietruck, but uart0 is debug serial. | ||
- | To make sure the PG06 and PG07 internal loopback,use Dupont Line connect them . | + | To test uart3(or uart4) should make sure the PG06 and PG07 (or PG10 and PG11)internal loopback,use Dupont Line connect them . |
- | If you only open the uart0 3 4,uart3 is mapping the device ttyS1. | + | If you only open the uart0 4, uart4 is mapping the device ttyS1. |
- | While open the uart0 2 3 4,uart3 is mapping the device ttyS2. | + | While open the uart0 3 4, uart3 is mapping the device ttyS1. uart4 is mapping the device ttyS2. |
<code> | <code> | ||
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The termial will prinf as below,it prove the uart3 is working . | The termial will prinf as below,it prove the uart3 is working . | ||
- | {{:tutorials:common:选区_052.png?600|}} | + | {{:tutorials:common:选区_061.png?600|}} |
=== See Also === | === See Also === |