[FAQ] USB-SPI Adapter Data Transceiver Problem
ViewTool Technical Support Team: How areyou! Last week bought two USB-SPI adapters, after the arrival of two devices for data communications testing.
First, follow the official website's documentation to install the USB-SPI Classic and connect both devices to the same PC via the USB interface.
Both devices can be properly identified (Device 0, Device 1), and the SPI_SEL0, SPI_SCK, SPI_MISO, SPI_MOSI, and POWER-GND are connected one by one with the DuPont line
as shown in the figure below.
http://www.viewtool.com/bbs/data/attachment/forum/201709/20/1058079nda3lttnanz9h63.jpg
http://www.viewtool.com/bbs/data/attachment/forum/201709/20/105806zxras3wscohobcux.jpg
After using the USB-SPI Classic data transceiver test. During the test, it is found that the master device sends data to the slave device and the
slave device can receive the data normally. The master device to send data from the device, the master device is received garbled (as shown below), and
occasionally to receive the correct data, what is the reason?
Have tried adjusting the master and slave roles of two devices tested again, the same phenomenon.
http://www.viewtool.com/bbs/data/attachment/forum/201709/20/105804b5v5vcoze5ik15kw.jpg Last edited by a51575588 on 2017-12-21 17:24
First reduce the clock frequency and then test it
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