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@@ -51,11 +51,12 @@ The board showed above has the following IO set
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- key1: not sure, using GPIO36 in a matrix
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- jack insertion: GPIO39 (inserted low)
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- D4 -> GPIO22 used for green LED (active low)
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-- D5 -> GPIO19 as well
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-- The IO connector also brings GPIO5, GPIO18, GPIO19, GPIO21, GPIO22 and GPIO23
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-- JTAG and SD-card use GPIO13 and GPIO15 (see dip switches)
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-- JTAG also brings GPIO12 and GPIO14
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-(note that GPIOs need pullups)
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+- D5 -> GPIO19 as well (muxed with key3)
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+- The IO connector also brings GPIO5, GPIO18, GPIO19, GPIO21, GPIO22 and GPIO23 (don't forget it's muxed with keys!)
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+- The JTAG connector uses GPIO 12, 13, 14 and 15 (see dip switched) but these are also used for SD-card (and 13 is key2)
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+- It's alwats possible to re-use GPIOO (download at boot) and GPIO1/GPIO3 which are RX/TX of UART0 but you'll lose trace
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+
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+(note that some GPIO need pullups)
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So a possible config would be
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- set_GPIO: 21=amp,22=green:0,39=jack:0
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philippe44