mirror of https://github.com/FOME-Tech/fome-fw.git
263 lines
6.2 KiB
C++
Executable File
263 lines
6.2 KiB
C++
Executable File
/**
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*
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* \file
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*
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* \brief This module contains NMC1000 I2C protocol bus APIs implementation.
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*
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* Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Subject to your compliance with these terms, you may use Microchip
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* software and any derivatives exclusively with Microchip products.
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* It is your responsibility to comply with third party license terms applicable
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* to your use of third party software (including open source software) that
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* may accompany Microchip software.
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*
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* THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
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* WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
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* INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
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* AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
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* LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
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* LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
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* SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
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* POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT
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* ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
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* RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
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* THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
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*
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* \asf_license_stop
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*
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*/
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#include "common/include/nm_common.h"
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#ifdef CONF_WINC_USE_I2C
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#include "nmi2c.h"
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#include "bus_wrapper/include/nm_bus_wrapper.h"
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/*
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* @fn nm_i2c_read_reg_with_ret
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* @brief Read register with error code return
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* @param [in] u32Addr
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* Register address
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* @param [out] pu32RetVal
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* Pointer to u32 variable used to return the read value
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* @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
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* @author M. Abdelmawla
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* @date 11 July 2012
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* @version 1.0
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*/
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sint8 nm_i2c_read_reg_with_ret(uint32 u32Addr, uint32* pu32RetVal)
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{
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uint8 b[6];
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uint8 rsz;
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tstrNmI2cDefault strI2c;
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sint8 s8Ret = M2M_SUCCESS;
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if(u32Addr < 0xff) { /* clockless i2c */
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b[0] = 0x09;
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b[1] = (uint8)(u32Addr);
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rsz = 1;
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strI2c.u16Sz = 2;
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} else {
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b[0] = 0x80;
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b[1] = (uint8)(u32Addr >> 24);
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b[2] = (uint8)(u32Addr >> 16);
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b[3] = (uint8)(u32Addr >> 8);
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b[4] = (uint8)(u32Addr);
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b[5] = 0x04;
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rsz = 4;
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strI2c.u16Sz = 6;
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}
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strI2c.pu8Buf = b;
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if(M2M_SUCCESS == nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c))
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{
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strI2c.u16Sz = rsz;
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if(M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_R, &strI2c))
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{
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//M2M_ERR("read error\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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}
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else
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{
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M2M_ERR("failed to send cfg bytes\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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if (rsz == 1) {
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*pu32RetVal = b[0];
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} else {
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*pu32RetVal = b[0] | ((uint32)b[1] << 8) | ((uint32)b[2] << 16) | ((uint32)b[3] << 24);
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}
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return s8Ret;
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}
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/*
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* @fn nm_i2c_read_reg
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* @brief Read register
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* @param [in] u32Addr
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* Register address
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* @return Register value
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* @author M. Abdelmawla
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* @date 11 July 2012
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* @version 1.0
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*/
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uint32 nm_i2c_read_reg(uint32 u32Addr)
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{
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uint32 val;
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nm_i2c_read_reg_with_ret(u32Addr, &val);
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return val;
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}
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/*
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* @fn nm_i2c_write_reg
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* @brief write register
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* @param [in] u32Addr
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* Register address
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* @param [in] u32Val
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* Value to be written to the register
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* @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
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* @author M. Abdelmawla
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* @date 11 July 2012
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* @version 1.0
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*/
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sint8 nm_i2c_write_reg(uint32 u32Addr, uint32 u32Val)
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{
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tstrNmI2cDefault strI2c;
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uint8 b[16];
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sint8 s8Ret = M2M_SUCCESS;
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if(u32Addr < 0xff) { /* clockless i2c */
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b[0] = 0x19;
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b[1] = (uint8)(u32Addr);
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b[2] = (uint8)(u32Val);
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strI2c.u16Sz = 3;
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} else {
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b[0] = 0x90;
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b[1] = (uint8)(u32Addr >> 24);
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b[2] = (uint8)(u32Addr >> 16);
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b[3] = (uint8)(u32Addr >> 8);
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b[4] = (uint8)u32Addr;
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b[5] = 0x04;
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b[6] = (uint8)u32Val;
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b[7] = (uint8)(u32Val >> 8);
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b[8] = (uint8)(u32Val >> 16);
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b[9] = (uint8)(u32Val >> 24);
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strI2c.u16Sz = 10;
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}
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strI2c.pu8Buf = b;
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if(M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c))
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{
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M2M_ERR("write error\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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return s8Ret;
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}
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/*
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* @fn nm_i2c_read_block
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* @brief Read block of data
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* @param [in] u32Addr
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* Start address
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* @param [out] puBuf
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* Pointer to a buffer used to return the read data
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* @param [in] u16Sz
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* Number of bytes to read. The buffer size must be >= u16Sz
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* @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
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* @author M. Abdelmawla
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* @date 11 July 2012
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* @version 1.0
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*/
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sint8 nm_i2c_read_block(uint32 u32Addr, uint8 *pu8Buf, uint16 u16Sz)
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{
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tstrNmI2cDefault strI2c;
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uint8 au8Buf[7];
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sint8 s8Ret = M2M_SUCCESS;
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au8Buf[0] = 0x02;
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au8Buf[1] = (uint8)(u32Addr >> 24);
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au8Buf[2] = (uint8)(u32Addr >> 16);
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au8Buf[3] = (uint8)(u32Addr >> 8);
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au8Buf[4] = (uint8)(u32Addr >> 0);
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au8Buf[5] = (uint8)(u16Sz >> 8);
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au8Buf[6] = (uint8)(u16Sz);
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strI2c.pu8Buf = au8Buf;
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strI2c.u16Sz = sizeof(au8Buf);
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if(M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W, &strI2c))
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{
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M2M_ERR("write error\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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else
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{
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strI2c.pu8Buf = pu8Buf;
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strI2c.u16Sz = u16Sz;
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if(M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_R, &strI2c))
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{
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M2M_ERR("read error\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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}
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return s8Ret;
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}
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/*
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* @fn nm_i2c_write_block
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* @brief Write block of data
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* @param [in] u32Addr
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* Start address
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* @param [in] puBuf
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* Pointer to the buffer holding the data to be written
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* @param [in] u16Sz
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* Number of bytes to write. The buffer size must be >= u16Sz
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* @return M2M_SUCCESS in case of success and M2M_ERR_BUS_FAIL in case of failure
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* @author M. Abdelmawla
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* @date 11 July 2012
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* @version 1.0
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*/
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sint8 nm_i2c_write_block(uint32 u32Addr, uint8 *pu8Buf, uint16 u16Sz)
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{
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uint8 au8Buf[7];
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tstrNmI2cSpecial strI2c;
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sint8 s8Ret = M2M_SUCCESS;
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au8Buf[0] = 0x12;
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au8Buf[1] = (uint8)(u32Addr >> 24);
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au8Buf[2] = (uint8)(u32Addr >> 16);
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au8Buf[3] = (uint8)(u32Addr >> 8);
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au8Buf[4] = (uint8)(u32Addr);
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au8Buf[5] = (uint8)(u16Sz >> 8);
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au8Buf[6] = (uint8)(u16Sz);
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strI2c.pu8Buf1 = au8Buf;
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strI2c.pu8Buf2 = pu8Buf;
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strI2c.u16Sz1 = sizeof(au8Buf);
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strI2c.u16Sz2 = u16Sz;
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if(M2M_SUCCESS != nm_bus_ioctl(NM_BUS_IOCTL_W_SPECIAL, &strI2c))
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{
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M2M_ERR("write error\n");
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s8Ret = M2M_ERR_BUS_FAIL;
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}
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return s8Ret;
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}
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#endif
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/* EOF */
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