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| Targeted Hardware | phyBOARD-Zeta (i.MX7) |
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Summary
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The serial console is essential for communication with and development of your design. This how-to guide will demonstrate the steps required to change the default serial debug console configuration.
Specifically, the phyBOARD-Zeta uses UART5 as the default serial console. This requires a breakout cable assembly to expose the RS-232 pins that are available on a pin header on the Zeta board, a null modem cable, and finally an RS-232 a serial cable to the host. The PEB-EVAL-02 board exposes UART1 via the RS-232 protocol on a DB9 connector. This will be the target configuration that the how-to guide will demonstrate.<Picture of phyBOARD-Zeta with UART5 and UART1 marked>
Step-by-step guide
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Change the SERIAL_CONSOLE to indicate the desired 'ttymxc' device in the imx7d_phyboard_zeta_001 machine configuraitonconfiguration. In this case, we will change it from a 4 to a 0:
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In Linux the devices are zero indexed. For example, UART1 corresponds to ttymxc0 and UART5 corresponds to ttymxc4. |
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SERIAL_CONSOLE = "115200 ttymxc4" |
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