GD32F450_BMC_BaseCode/app/bmc/AuthChip/CM_READ.c

// Mid Level Utility Function: cm_ReadCommand()
//
// Note: this module must be after all low level functions in the library and
//       before all high level user function to assure that any reference to
//       this function in this library are satistified.

#include "CM_LIB.h"
#include "CM_I2C.h"
#include "CM_I2C_L.h"
#include <unistd.h>
#include <stdio.h>
#include "linux/fcntl.h"
#include "driver.h"
#include <string.h>

uint8_t cm_ReadCommand(uint8_t * pucInsBuff, uint8_t * pucRetVal, uint8_t ucLen)
{ 
    uint8_t ucReturn;
    
    if(ucLen < 1)
    {
        printf("Invalid ucLen %d\n", ucLen);
        return -1;
    }

    if ((ucReturn = CM_LOW_LEVEL.SendCommand(pucInsBuff)) != SUCCESS) return ucReturn;
    ucReturn = CM_LOW_LEVEL.ReceiveRet(pucRetVal, ucLen);

    // printf("---> cm_ReadCommand: %#02x %#02x %#02x %#02x - ", pucInsBuff[0], pucInsBuff[1], pucInsBuff[2], pucInsBuff[3]);
    // int i;
    // for (i = 0; i < ucLen; i++)
    // {
    // 	printf("%#02x ", pucRetVal[i]);
    // }
    // printf("\n");

    return ucReturn;
}