初版
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huxi
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#ifndef _IIC_API_H_
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#define _IIC_API_H_
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#include "typedef.h"
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#include "gpio.h"
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enum iic_state_enum {
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IIC_OK = 0,
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IIC_ERROR_INIT_FAIL = -1,
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IIC_ERROR_NO_INIT = -2,
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IIC_ERROR_SUSPEND_FAIL = -3,
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IIC_ERROR_RESUME_FAIL = -4,
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IIC_ERROR_BUSY = -5,
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IIC_ERROR_PARAM_ERROR = -6,
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IIC_ERROR_DEV_ADDR_ACK_ERROR = -7,
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IIC_ERROR_REG_ADDR_ACK_ERROR = -8,
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IIC_ERROR_INDEX_ERROR = -9,
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IIC_ERROR_FREQUENCY_ERROR = -10,
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IIC_ERROR_RESLOCK_BUSY = -11,
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IIC_ERROR_MASTER_ERROR = -12,//iic主机卡死
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};
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enum iic_role {IIC_MASTER, IIC_SLAVE};
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struct iic_master_config {
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enum iic_role role; //软件只有IIC_MASTER
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int scl_io;
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int sda_io;
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u8 io_mode;//1:上拉或0:浮空
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enum gpio_drive_strength hdrive; //enum GPIO_HDRIVE 0:2.4MA, 1:8MA, 2:26.4MA, 3:40MA
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u32 master_frequency; //软件iic频率(hz 不准)
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u8 ie_en; //中断使能
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u8 irq_priority; //中断
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//br27,28,36:0:close filter; 1:enable filter
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//br50:0:close filter; 1:<1*Tiic_baud_clk, 2:<2*Tiic_baud_clk, 3:<3*Tiic_baud_clk
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u8 io_filter;
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};
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#include "iic_soft.h"
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#include "iic_hw_v2.h"
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// #include "iic_hw_v1.h"
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/******************************soft iic*****************************/
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//如果无reg_addr:reg_addr=NULL,reg_len=0
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//return: <0:error, =read_len:ok
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int soft_i2c_master_read_nbytes_from_device_reg(soft_iic_dev iic,
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unsigned char dev_addr, //设备地址
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unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度
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unsigned char *read_buf, int read_len);//缓存buf，读取长度
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//如果无reg_addr:reg_addr=NULL,reg_len=0
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//return: =write_len:ok, other:error
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int soft_i2c_master_write_nbytes_to_device_reg(soft_iic_dev iic,
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unsigned char dev_addr, //设备地址
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unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度
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unsigned char *write_buf, int write_len);//数据buf, 写入长度
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/******************************hw iic master*****************************/
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//如果无reg_addr:reg_addr=NULL,reg_len=0
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//return: <0:error, =read_len:ok
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int hw_i2c_master_read_nbytes_from_device_reg(hw_iic_dev iic,
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unsigned char dev_addr, //设备地址
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unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度
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unsigned char *read_buf, int read_len);//缓存buf，读取长度
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//如果无reg_addr:reg_addr=NULL,reg_len=0
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//return: =write_len:ok, other:error
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int hw_i2c_master_write_nbytes_to_device_reg(hw_iic_dev iic,
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unsigned char dev_addr, //设备地址
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unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度
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unsigned char *write_buf, int write_len);//数据buf, 写入长度
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void hw_iic_master_module_init();
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#ifdef _IIC_USE_HW
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#define get_iic_config(iic) get_hw_iic_config(iic)
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#define iic_init(iic, config) hw_iic_init(iic, config)
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#define iic_deinit(iic) //hw_iic_deinit(iic)
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#define iic_start(iic) hw_iic_start(iic)
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#define iic_stop(iic) hw_iic_stop(iic)
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#define iic_reset(iic) hw_iic_reset(iic)
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#define iic_err_reset(iic) hw_iic_err_reset(iic)
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#define iic_tx_byte(iic, byte) hw_iic_tx_byte(iic, byte)
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#define iic_rx_byte(iic, ack, err) hw_iic_rx_byte(iic, ack, err)//err:指针返回错误状态
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#define iic_read_buf(iic, buf, len) hw_iic_read_buf(iic, buf, len)
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#define iic_write_buf(iic, buf, len) hw_iic_write_buf(iic, buf, len)
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#define iic_suspend(iic) /*hw_iic_suspend(iic)*/
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#define iic_resume(iic) /*hw_iic_resume(iic)*/
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#define i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) \
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hw_i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len)
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#define i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) \
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hw_i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len)
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#else
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#define get_iic_config(iic) get_soft_iic_config(iic)
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#define iic_init(iic, config) soft_iic_init(iic, config)
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#define iic_deinit(iic) soft_iic_deinit(iic)
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#define iic_start(iic) soft_iic_start(iic)
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#define iic_stop(iic) soft_iic_stop(iic)
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#define iic_reset(iic) soft_iic_reset(iic)
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#define iic_err_reset(iic)
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#define iic_tx_byte(iic, byte) soft_iic_tx_byte(iic, byte)
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#define iic_rx_byte(iic, ack, err) soft_iic_rx_byte(iic, ack, err)
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#define iic_read_buf(iic, buf, len) soft_iic_read_buf(iic, buf, len)
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#define iic_write_buf(iic, buf, len) soft_iic_write_buf(iic, buf, len)
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#define iic_suspend(iic) soft_iic_suspend(iic)
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#define iic_resume(iic) soft_iic_resume(iic)
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#define i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) \
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soft_i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len)
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#define i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) \
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soft_i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len)
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#endif
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/******************************hw iic slave*****************************/
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int hw_iic_slave_polling_rx(hw_iic_dev iic, u8 *rx_buf);
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int hw_iic_slave_polling_tx(hw_iic_dev iic, u8 *tx_buf);
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#endif
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