CC2540 I2C

CC2540里I2C能直接用RemoTI-CC253xDK-1.3.1项目里的hal_i2c.c文件吗，还是这个只是参考，需要修改后，才可以用

BLE 1.3里有对I2C的驱动。 sensorTag例子就是I2C驱动传感器。另外CC2540不带硬件I2C, CC2541才有I2C.

我意思用软件模拟I2C的话是不是RemoTI-CC253xDK-1.3.1项目里的hal_i2c.c文件可用，CC2541和CC2540区别是 you’re concerned with active power consumption, use CC2541, as it will save you 30% in TX and around 10% in RX.

• If you need +4 dBm output power, you should choose the CC2540.
• If you need a USB interface, you should choose the CC2540.
• If you need I2C, you should choose the CC2541.
• If you want to communicate using a proprietary protocol, you should choose the CC2541.
• If none of the above apply, it doesn’t matter which one you choose. 
• If cost is important, CC2541 is priced slightly lower than CC2540.这些吧其他通用的吧

没试过，不过CC254X与CC2531 Pin to Pin.你可以试一试。 我的建议是如果你是使用CC2541还是使用B LE STACK提供的hal_i2c.c. 有例子