AudioConsole/AudioConsole.X/Source/winc1500/driver/source/nmi2c.c

/**
 *
 * \file
 *
 * \brief This module contains NMC1000 I2C protocol bus APIs implementation.
 *
 * Copyright (c) 2015 Atmel Corporation. All rights reserved.
 *
 * \asf_license_start
 *
 * \page License
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. The name of Atmel may not be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * \asf_license_stop
 *
 */

#include "common/include/nm_common.h"

#ifdef CONF_WINC_USE_I2C

#include "nmi2c.h"
#include "bus_wrapper/include/nm_bus_wrapper.h"

/*
 *	@fn		nm_i2c_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_i2c_read_reg_with_ret(uint32 u32Addr, uint32 *pu32RetVal)
{
	uint8            b[6];
	uint8            rsz;
	tstrNmI2cDefault strI2c;
	sint8            s8Ret = M2M_SUCCESS;

	if (u32Addr < 0xff) { /* clockless i2c */
		b[0]         = 0x09;
		b[1]         = (uint8)(u32Addr);
		rsz          = 1;
		strI2c.u16Sz = 2;
	} else {
		b[0]         = 0x80;
		b[1]         = (uint8)(u32Addr >> 24);
		b[2]         = (uint8)(u32Addr >> 16);
		b[3]         = (uint8)(u32Addr >> 8);
		b[4]         = (uint8)(u32Addr);
		b[5]         = 0x04;
		rsz          = 4;
		strI2c.u16Sz = 6;
	}

	strI2c.pu8Buf = b;

	if (M2M_SUCCESS == nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c)) {
		strI2c.u16Sz = rsz;
		if (M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_R, &strI2c)) {
			// M2M_ERR("read error\n");
			s8Ret = M2M_ERR_BUS_FAIL;
		}
	} else {
		M2M_ERR("failed to send cfg bytes\n");
		s8Ret = M2M_ERR_BUS_FAIL;
	}

	if (rsz == 1) {
		*pu32RetVal = b[0];
	} else {
		*pu32RetVal = b[0] | ((uint32)b[1] << 8) | ((uint32)b[2] << 16) | ((uint32)b[3] << 24);
	}
	return s8Ret;
}

/*
 *	@fn		nm_i2c_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_i2c_read_reg(uint32 u32Addr)
{
	uint32 val;
	nm_i2c_read_reg_with_ret(u32Addr, &val);
	return val;
}

/*
 *	@fn		nm_i2c_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_i2c_write_reg(uint32 u32Addr, uint32 u32Val)
{
	tstrNmI2cDefault strI2c;
	uint8            b[16];
	sint8            s8Ret = M2M_SUCCESS;

	if (u32Addr < 0xff) { /* clockless i2c */
		b[0]         = 0x19;
		b[1]         = (uint8)(u32Addr);
		b[2]         = (uint8)(u32Val);
		strI2c.u16Sz = 3;
	} else {
		b[0]         = 0x90;
		b[1]         = (uint8)(u32Addr >> 24);
		b[2]         = (uint8)(u32Addr >> 16);
		b[3]         = (uint8)(u32Addr >> 8);
		b[4]         = (uint8)u32Addr;
		b[5]         = 0x04;
		b[6]         = (uint8)u32Val;
		b[7]         = (uint8)(u32Val >> 8);
		b[8]         = (uint8)(u32Val >> 16);
		b[9]         = (uint8)(u32Val >> 24);
		strI2c.u16Sz = 10;
	}

	strI2c.pu8Buf = b;

	if (M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c)) {
		M2M_ERR("write error\n");
		s8Ret = M2M_ERR_BUS_FAIL;
	}

	return s8Ret;
}

/*
 *	@fn		nm_i2c_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]	u16Sz
 *				Number of bytes to read. The buffer size must be >= u16Sz
 *	@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_i2c_read_block(uint32 u32Addr, uint8 *pu8Buf, uint16 u16Sz)
{
	tstrNmI2cDefault strI2c;
	uint8            au8Buf[7];
	sint8            s8Ret = M2M_SUCCESS;

	au8Buf[0] = 0x02;
	au8Buf[1] = (uint8)(u32Addr >> 24);
	au8Buf[2] = (uint8)(u32Addr >> 16);
	au8Buf[3] = (uint8)(u32Addr >> 8);
	au8Buf[4] = (uint8)(u32Addr >> 0);
	au8Buf[5] = (uint8)(u16Sz >> 8);
	au8Buf[6] = (uint8)(u16Sz);

	strI2c.pu8Buf = au8Buf;
	strI2c.u16Sz  = sizeof(au8Buf);

	if (M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c)) {
		M2M_ERR("write error\n");
		s8Ret = M2M_ERR_BUS_FAIL;
	} else {
		strI2c.pu8Buf = pu8Buf;
		strI2c.u16Sz  = u16Sz;

		if (M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_R, &strI2c)) {
			M2M_ERR("read error\n");
			s8Ret = M2M_ERR_BUS_FAIL;
		}
	}

	return s8Ret;
}

/*
 *	@fn		nm_i2c_write_block
 *	@brief	Write block of data
 *	@param [in]	u32Addr
 *				Start address
 *	@param [in]	puBuf
 *				Pointer to the buffer holding the data to be written
 *	@param [in]	u16Sz
 *				Number of bytes to write. The buffer size must be >= u16Sz
 *	@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_i2c_write_block(uint32 u32Addr, uint8 *pu8Buf, uint16 u16Sz)
{
	uint8            au8Buf[7];
	tstrNmI2cSpecial strI2c;
	sint8            s8Ret = M2M_SUCCESS;

	au8Buf[0] = 0x12;
	au8Buf[1] = (uint8)(u32Addr >> 24);
	au8Buf[2] = (uint8)(u32Addr >> 16);
	au8Buf[3] = (uint8)(u32Addr >> 8);
	au8Buf[4] = (uint8)(u32Addr);
	au8Buf[5] = (uint8)(u16Sz >> 8);
	au8Buf[6] = (uint8)(u16Sz);

	strI2c.pu8Buf1 = au8Buf;
	strI2c.pu8Buf2 = pu8Buf;
	strI2c.u16Sz1  = sizeof(au8Buf);
	strI2c.u16Sz2  = u16Sz;

	if (M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W_SPECIAL, &strI2c)) {
		M2M_ERR("write error\n");
		s8Ret = M2M_ERR_BUS_FAIL;
	}

	return s8Ret;
}

#endif
/* EOF */