Advantech ROM-5721, Руководство пользователя

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ROM-5721 User Manual
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3.1.10 GPIO Test
3.1.10.1 GPIO Pin define:
SMARC
Pin # SMARC Pin
NAME CPU Ball NAME Kernel
GPIO Default
Direction
p108 GPIO0 i2c/7‐0073, pca9538 P0 496 in
p110 GPIO2 i2c/7‐0073, pca9538 P1 497 In
p112 GPIO4 i2c/7‐0073, pca9538 P2 498 In
p113 GPIO5 MX8MM_IOMUXC_SPDIF_EXT_CLK_GPIO5_IO5 133 In
p114 GPIO6 i2c/7‐0073, pca9538 P3 499 In
p115 GPIO7 i2c/7‐0073, pca9538 P4 500 In
p116 GPIO8 i2c/7‐0073, pca9538 P5 501 In
p117 GPIO9 i2c/7‐0073, pca9538 P6 502 In
p118 GPIO10 i2c/7‐0073, pca9538 P7 503 In
p119 GPIO11 MX8MM_IOMUXC_SPDIF_TX_GPIO5_IO3 131 in
3.1.10.2 GPIO Test method:
Loopback test( take GPIO0 and GPIO2 as an example)
Step 1: Connect GPIO0 and GPIO2 on ROM-DB5901
Step 2: Export GPIO interface
Step 3: Set direction
Step 4: Read value and set output value than check
3.1.11 Watchdog Test
After enable watchdog, system will reboot after timeout.