Mapping
The following table shows the mapping of the inputs and outputs of the Iono RP D16
module to the related pins of the RP2040 microcontroller.
Iono RP D16 inputs and outputs
RP2040 pins
DT1
38 (GPIO26)
DT2
39 (GPIO27)
DT3
40 (GPIO28)
DT4
41 (GPIO29)
SPI CLOCK
4 (GPIO2)
SPI MOSI
5 (GPIO3)
SPI MISO
6 (GPIO4)
SPI CS OUT D1-D8 (active low)
8 (GPIO6)
SPI CS OUT D9-D16 (active low)
7 (GPIO5)
SPI CS IN D1-D8 (active low)
11 (GPIO8)
SPI CS IN D9-D16 (active low)
9 (GPIO7)
IN LATCH D1-D16 (active low)
12 (GPIO9)
OUT WD ENABLE
29 (GPIO18)
IN FAULT D1-D16 (active low)
30 (GPIO19)
OUT FAULT D1-D16 (active low)
31 (GPIO20)
RS-485 RX
28 (GPIO17)
RS-485 TX
27 (GPIO16)
RS-485 TX-ENABLE (active low)
17 (GPIO14)
I2C SDA for EERAM and optionals
2 (GPIO0)
I2C SCL for EERAM and optionals
3 (GPIO1)
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Iono RP D16 User Guide