Arduino and Wireless Module CC1101

Summarize the experience of wireless module debugging. There are already people on the Arduino who have made the library of this module, but according to the manual written also has a certain reference significance.

Wireless module is one of the modules that I think is more difficult to debug, because it is a module of mutual interaction, communication failure has two reasons, can not be found from a single code. The code is written, and all sorts of information is written, but it is not received or the data is not received. The first thing to think about is checking the wiring of the device. Because it is SPI communication, it is using the SPI Channel port that comes with mega2560, see the previous article introduction.

In addition CC1101 has a GDO0 i connected to the board of the 48 pin,

Confirm the connection.

The second is to test whether the SPI is working correctly, the 0x31 address in the status register is 0x14, if you read the result for 0x14 then basically the SPI is working statically, the view chip manual says that the reset value of this version status register is 0x04, possibly a clerical error for the manual. Since we have read 3 modules, we have used different codes for this value.

In addition, we often use in the testing of the project is written addr register to test whether read and write is normal, addr register address is 0x09, first write read out, if consistent, then your communication with the chip is basically no problem.

After testing these, if you still cannot two wireless communication, then confirm the channel is consistent.

The manual does not recommend the IO current to exceed 10ma, but tested I read directly with the IO port, the current is 50mA also normal operation.

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Arduino and Wireless Module CC1101