Würth eiSos Series User Manual
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Contents
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3 Host integrationAs described in chapter 2 the Sensors SDK has a platform independent driver componentand Raspberry-pi specific examples which demonstrate the use of these drivers. In the fol-lowing, the steps involved in porting the drivers to a custom platform is described.The contents of the drivers directory has to be directly integrated into the custom project.For example, in case of WSEN_PADS, include the WSEN_PADS_2511020213301.h andWSEN_PADS_2511020213301.c files to the custom project.The file platform.h declares platform specific functions that has to be implemented by theuser on the custom host. For example, the access to I2C interface of the host is declaredwith the following functions./* ** @brief Initialize the I2C Interface* @param I2C address* @retval Error Code*/int8_t I2CInit ( int address);/* ** @brief Read data starting from the addressed register* @param −RegAdr : the register address to read from* −NumByteToRead : number of bytes to read* −pointer Data : the address store the data* @retval Error Codeint8_t ReadReg(uint8_t RegAdr, int NumByteToRead, uint8_t *Data);/*** @brief Write data strarting from the addressed register* @param −RegAdr : Address to write in* −NumByteToWrite : number of bytes to write* −pointer Data : Address of the data to be written* @retval Error Code*/int8_t WriteReg(int RegAdr, int NumByteToWrite, uint8_t *Data);Code 1: Code snippet for I2C interfaceHere the definition of these functions, depending on the host peripherals, has to be imple-mented by the user. The function I2CInit() should initialize the I2C peripheral on the customMCU and the functions ReadReg() and WriteReg() should enable reading/writing data bytesover the I2C bus.Please refer to the user manual of the corresponding sensor for a detaileddescription of the characteristics of the digital interface being used.Sensors SDK, User manualVersion 1.1 © October 2019www.we-online.com/sensors 8 |
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