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UG-1828 Preliminary Technical Data

Rev. PrC | Page 36 of 338

int32_t(*adi_hal_Wait_us)(void *devHalCfg, uint32_t time_us) = linux_uio_TimerWait_us;

…

The file continues from this point to set the functions which handle the I2C reading and writing, the SPI reading and writing, assigning

the RESET pin, etc. Taking note of the second line of the file, a customer need only define a CUSTOMER_PLATFORM variable for the

pre-processor to use their own platform code. Doing so will change the operation of the adi_platform.c file as follows:

#else

#include "adi_common_hal_customer.h"

#include "adi_adm1293_hal_customer.h"

#include "adi_adrv9001_hal_customer.h"

#include "adi_fpga9001_hal_customer.h"

/* Logging interface */

int32_t(*adi_hal_LogWrite)(void *devHalCfg, uint32_t logLevel, const char *comment, va_list args) = customer_LogWrite;

/* Timer interface */

int32_t(*adi_hal_Wait_us)(void *devHalCfg, uint32_t time_us) = customer_TimerWait_us;

…

Once done, the adi_platform.c code will automatically switch to using the placeholder customer code under the customer\ folder.

Below is provided a code snippet from adi_adrv9001_hal_customer.c, located under customer\adrv9001\. Here can be seen each function

that is required by the HAL to support a customer-specific platform. It is advisable to have read the example HAL implementation

provided under the linux_uio\ folder to gain an understanding of the purpose of each function, as well as the acceptable return values.

Function names may be modified, if desired, provided the pointer assignments in adi_platform.c are updated accordingly. However, the

function parameters may not be modified, as this would cause compilation errors.

#include "adi_adrv9001_hal_customer.h"

int32_t customer_adi_adrv9001_hal_open(void *devHalCfg)

{

/* Customer code goes here */

return 0;

}

int32_t customer_adi_adrv9001_hal_close(void *devHalCfg)

{

/* Customer code goes here */

return 0;

}

int32_t customer_adi_adrv9001_hal_spi_write(void *devHalCfg, const uint8_t txData[], uint32_t numTxBytes)

{

/* Customer code goes here */

Analog Devices ADRV9002 User Manual

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