W55RP20 EVB PICO

Question

I´m using your code WIZnet W55RP20-EVB Pico Trying to work with I2C. Example1 in the attachment is to get temperature from an AHT10 I tried to connect to the AHT10 over SDA GP14 (Pin19) and SCL GP15(Pin20) of the Board. When using Wire1.setSDA(19); Wire1.setSCL(20); Wire1.begin(); The Chip hangs up… Example2 in the attachment is to get temperature from an SHT21 Both are compiling, but no data from the temperature sensor ...cannot dwell there long." George Bernard Shaw (1856-1950) closing connection TEMP: -46.8 In example 2: SDA is connected to Pin GP0 (Pin1) of the W55RP20-EVB-PICO SCL is connected to Pin GP1 (Pin2) of the W55RP20-EVB-PICO Gnd and 3V3 May anyone can help me on this?

Lihan__ · Answer

First of all, the pin number appears to be incorrect The W55RP20 is a SiP chip combining the RP2040 and W5500. Referring to the RP2040 datasheet to check each GPIO function will likely help you when configuring the pins. I tried to connect to the AHT10 over SDA GP14 (Pin19) and SCL GP15(Pin20) of the Board. If you want to control GP14 and GP15, you should write the code as follows. (It should not be configured based on the pin numbers of the W55RP20-EVB-Pico board.) Wire1.setSDA(14); Wire1.setSCL(15); SDA is connected to Pin GP0 (Pin1) of the W55RP20-EVB-PICO SCL is connected to Pin GP1 (Pin2) of the W55RP20-EVB-PICO In addition, if you’d like to set it up as described in Example2, you can configure it as shown below. Wire1.setSDA(0); Wire1.setSCL(1); This link may be helpful as a reference. rp2040 Datasheet https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf - 13p W55rp20 Datasheet https://docs.wiznet.io/img/products/w55rp20/W55RP20_ds_v100e.pdf Wiznet docs - W55RP20-evb-pico https://docs.wiznet.io/Product/ioNIC/W55RP20/w55rp20-evb-pico