nmbus.c

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#ifndef CORTUS_APP

#include "nmbus.h"
#include "nmi2c.h"
#include "nmspi.h"
#include "nmuart.h"

#define MAX_TRX_CFG_SZ          8

sint8 nm_bus_iface_init(uint8 *pvInitVal, uint32 req_serial_number)
{
        sint8 ret = M2M_SUCCESS;
        ret = nm_bus_init(pvInitVal, req_serial_number);

        return ret;
}

sint8 nm_bus_iface_deinit(void)
{
        sint8 ret = M2M_SUCCESS;
        ret = nm_bus_deinit();

        return ret;
}

sint8 nm_bus_iface_reconfigure(void *ptr)
{
        sint8 ret = M2M_SUCCESS;
#ifdef CONF_WINC_USE_UART
        if(ptr) 
        ret = nm_uart_reconfigure(ptr);
    else
        ret = M2M_ERR_BUS_FAIL;
#endif
        return ret;
}
/*
*       @fn             nm_read_reg
*       @brief  Read register
*       @param [in]     u32Addr
*                               Register address
*       @return Register value
*       @author M. Abdelmawla
*       @date   11 July 2012
*       @version        1.0
*/
uint32 nm_read_reg(uint32 u32Addr)
{
#ifdef CONF_WINC_USE_UART
        return nm_uart_read_reg(u32Addr);
#elif defined (CONF_WINC_USE_SPI)
        return nm_spi_read_reg(u32Addr);
#elif defined (CONF_WINC_USE_I2C)
        return nm_i2c_read_reg(u32Addr);
#else
#error "Plesae define bus usage"
#endif

}

/*
*       @fn             nm_read_reg_with_ret
*       @brief  Read register with error code return
*       @param [in]     u32Addr
*                               Register address
*       @param [out]    pu32RetVal
*                               Pointer to u32 variable used to return the read value
*       @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
*       @author M. Abdelmawla
*       @date   11 July 2012
*       @version        1.0
*/
sint8 nm_read_reg_with_ret(uint32 u32Addr, uint32* pu32RetVal)
{
#ifdef CONF_WINC_USE_UART
        return nm_uart_read_reg_with_ret(u32Addr,pu32RetVal);
#elif defined (CONF_WINC_USE_SPI)
        return nm_spi_read_reg_with_ret(u32Addr,pu32RetVal);
#elif defined (CONF_WINC_USE_I2C)
        return nm_i2c_read_reg_with_ret(u32Addr,pu32RetVal);
#else
#error "Plesae define bus usage"
#endif
}

/*
*       @fn             nm_write_reg
*       @brief  write register
*       @param [in]     u32Addr
*                               Register address
*       @param [in]     u32Val
*                               Value to be written to the register
*       @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
*       @author M. Abdelmawla
*       @date   11 July 2012
*       @version        1.0
*/
sint8 nm_write_reg(uint32 u32Addr, uint32 u32Val)
{
#ifdef CONF_WINC_USE_UART
        return nm_uart_write_reg(u32Addr,u32Val);
#elif defined (CONF_WINC_USE_SPI)
        return nm_spi_write_reg(u32Addr,u32Val);
#elif defined (CONF_WINC_USE_I2C)
        return nm_i2c_write_reg(u32Addr,u32Val);
#else
#error "Plesae define bus usage"
#endif
}

static inline sint8 p_nm_read_block(uint32 u32Addr, uint8 *puBuf, uint16 u16Sz)
{
#ifdef CONF_WINC_USE_UART
        return nm_uart_read_block(u32Addr,puBuf,u16Sz);
#elif defined (CONF_WINC_USE_SPI)
        return nm_spi_read_block(u32Addr,puBuf,u16Sz);
#elif defined (CONF_WINC_USE_I2C)
        return nm_i2c_read_block(u32Addr,puBuf,u16Sz);
#else
#error "Plesae define bus usage"
#endif

}
/*
*       @fn             nm_read_block
*       @brief  Read block of data
*       @param [in]     u32Addr
*                               Start address
*       @param [out]    puBuf
*                               Pointer to a buffer used to return the read data
*       @param [in]     u32Sz
*                               Number of bytes to read. The buffer size must be >= u32Sz
*       @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
*       @author M. Abdelmawla
*       @date   11 July 2012
*       @version        1.0
*/ 
sint8 nm_read_block(uint32 u32Addr, uint8 *puBuf, uint32 u32Sz)
{
        uint16 u16MaxTrxSz = egstrNmBusCapabilities.u16MaxTrxSz - MAX_TRX_CFG_SZ;
        uint32 off = 0;
        sint8 s8Ret = M2M_SUCCESS;

        for(;;)
        {
                if(u32Sz <= u16MaxTrxSz)
                {
                        s8Ret += p_nm_read_block(u32Addr, &puBuf[off], (uint16)u32Sz);  
                        break;
                }
                else
                {
                        s8Ret += p_nm_read_block(u32Addr, &puBuf[off], u16MaxTrxSz);
                        if(M2M_SUCCESS != s8Ret) break;
                        u32Sz -= u16MaxTrxSz;
                        off += u16MaxTrxSz;
                        u32Addr += u16MaxTrxSz;
                }
        }

        return s8Ret;
}

static inline sint8 p_nm_write_block(uint32 u32Addr, uint8 *puBuf, uint16 u16Sz)
{
#ifdef CONF_WINC_USE_UART
        return nm_uart_write_block(u32Addr,puBuf,u16Sz);
#elif defined (CONF_WINC_USE_SPI)
        return nm_spi_write_block(u32Addr,puBuf,u16Sz);
#elif defined (CONF_WINC_USE_I2C)
        return nm_i2c_write_block(u32Addr,puBuf,u16Sz);
#else
#error "Plesae define bus usage"
#endif

}
sint8 nm_write_block(uint32 u32Addr, uint8 *puBuf, uint32 u32Sz)
{
        uint16 u16MaxTrxSz = egstrNmBusCapabilities.u16MaxTrxSz - MAX_TRX_CFG_SZ;
        uint32 off = 0;
        sint8 s8Ret = M2M_SUCCESS;

        for(;;)
        {
                if(u32Sz <= u16MaxTrxSz)
                {
                        s8Ret += p_nm_write_block(u32Addr, &puBuf[off], (uint16)u32Sz); 
                        break;
                }
                else
                {
                        s8Ret += p_nm_write_block(u32Addr, &puBuf[off], u16MaxTrxSz);
                        if(M2M_SUCCESS != s8Ret) break;
                        u32Sz -= u16MaxTrxSz;
                        off += u16MaxTrxSz;
                        u32Addr += u16MaxTrxSz;
                }
        }

        return s8Ret;
}

#endif