[DeviceDrivers][i2c] Remove the fm24clxx driver in i2c.

This commit is contained in:
armink 2019-05-29 11:17:46 +08:00
parent 5a3cb253be
commit f9a7b47955
2 changed files with 0 additions and 186 deletions

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@ -1,160 +0,0 @@
/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-07-14 aubr.cool 1st version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include "fm24clxx.h"
struct fm24clxx_device
{
struct rt_device parent;
struct rt_i2c_bus_device *bus;
};
/* RT-Thread device interface */
static rt_err_t fm24clxx_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t fm24clxx_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t fm24clxx_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t fm24clxx_control(rt_device_t dev, int cmd, void *args)
{
return RT_EOK;
}
static rt_size_t fm24clxx_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
struct fm24clxx_device *fm24clxx;
const struct fm24clxx_config *cfg;
struct rt_i2c_msg msg[2];
rt_uint8_t mem_addr[2] = {0,};
rt_size_t ret = 0;
RT_ASSERT(dev != 0);
fm24clxx = (struct fm24clxx_device *) dev;
RT_ASSERT(fm24clxx->parent.user_data != 0);
cfg = (const struct fm24clxx_config *) fm24clxx->parent.user_data;
if(pos > cfg->size)
{
return 0;
}
if(pos + size > cfg->size)
{
size = cfg->size - pos;
}
msg[0].addr = cfg->addr;
msg[0].flags = cfg->flags | RT_I2C_WR;
mem_addr[0] = (pos >> 8);
mem_addr[1] = (rt_uint8_t) pos;
msg[0].buf = (rt_uint8_t *) mem_addr;
msg[0].len = 2;
msg[1].addr = cfg->addr;
msg[1].flags = cfg->flags | RT_I2C_RD;
msg[1].buf = (rt_uint8_t *) buffer;
msg[1].len = size;
ret = rt_i2c_transfer(fm24clxx->bus, msg, 2);
return (ret == 2) ? size : 0;
}
static rt_size_t fm24clxx_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
struct fm24clxx_device *fm24clxx;
const struct fm24clxx_config *cfg;
struct rt_i2c_msg msg[2];
rt_uint8_t mem_addr[2] = {0,};
rt_size_t ret = 0;
RT_ASSERT(dev != 0);
fm24clxx = (struct fm24clxx_device *) dev;
RT_ASSERT(fm24clxx->parent.user_data != 0);
cfg = (const struct fm24clxx_config *) fm24clxx->parent.user_data;
if(pos > cfg->size)
{
return 0;
}
if(pos + size > cfg->size)
{
size = cfg->size - pos;
}
msg[0].addr = cfg->addr;
msg[0].flags = cfg->flags | RT_I2C_WR;
mem_addr[0] = (pos >> 8);
mem_addr[1] = (rt_uint8_t) pos;
msg[0].buf = (rt_uint8_t *) mem_addr;
msg[0].len = 2;
msg[1].addr = cfg->addr;
msg[1].flags = cfg->flags | RT_I2C_WR | RT_I2C_NO_START;
msg[1].buf = (rt_uint8_t *) buffer;
msg[1].len = size;
ret = rt_i2c_transfer(fm24clxx->bus, msg, 2);
return (ret == 2) ? size : 0;
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device fm24clxx_ops =
{
fm24clxx_init,
fm24clxx_open,
fm24clxx_close,
fm24clxx_read,
fm24clxx_write,
fm24clxx_control
};
#endif
rt_err_t fm24clxx_register(const char *fm_device_name, const char *i2c_bus, void *user_data)
{
static struct fm24clxx_device fm24clxx_drv;
struct rt_i2c_bus_device *bus;
bus = rt_i2c_bus_device_find(i2c_bus);
if (bus == RT_NULL)
{
return RT_ENOSYS;
}
fm24clxx_drv.bus = bus;
fm24clxx_drv.parent.type = RT_Device_Class_Block;
#ifdef RT_USING_DEVICE_OPS
fm24clxx_drv.parent.ops = &fm24clxx_ops;
#else
fm24clxx_drv.parent.init = fm24clxx_init;
fm24clxx_drv.parent.open = fm24clxx_open;
fm24clxx_drv.parent.close = fm24clxx_close;
fm24clxx_drv.parent.read = fm24clxx_read;
fm24clxx_drv.parent.write = fm24clxx_write;
fm24clxx_drv.parent.control = fm24clxx_control;
#endif
fm24clxx_drv.parent.user_data = user_data;
return rt_device_register(&fm24clxx_drv.parent, fm_device_name, RT_DEVICE_FLAG_RDWR);
}

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-07-14 aubr.cool 1st version
*/
#ifndef __FM24CLXX_H__
#define __FM24CLXX_H__
#include <rtthread.h>
struct fm24clxx_config
{
rt_uint32_t size;
rt_uint16_t addr;
rt_uint16_t flags;
};
extern rt_err_t fm24clxx_register(const char *e2m_device_name,
const char *i2c_bus, void *user_data);
#endif /*__FM24CLXX_H__*/