#ifndef _IIC_API_H_ #define _IIC_API_H_ #include "generic/typedef.h" #include "gpio.h" enum iic_state_enum { IIC_OK = 0, IIC_ERROR_INIT_FAIL = -1, IIC_ERROR_NO_INIT = -2, IIC_ERROR_SUSPEND_FAIL = -3, IIC_ERROR_RESUME_FAIL = -4, IIC_ERROR_BUSY = -5, IIC_ERROR_PARAM_ERROR = -6, IIC_ERROR_DEV_ADDR_ACK_ERROR = -7, IIC_ERROR_REG_ADDR_ACK_ERROR = -8, IIC_ERROR_INDEX_ERROR = -9, IIC_ERROR_FREQUENCY_ERROR = -10, IIC_ERROR_RESLOCK_BUSY = -11, IIC_ERROR_MASTER_ERROR = -12,//iic主机卡死 }; enum iic_role {IIC_MASTER, IIC_SLAVE}; struct iic_master_config { enum iic_role role; //软件只有IIC_MASTER int scl_io; int sda_io; enum gpio_mode io_mode;//上拉或浮空 enum gpio_drive_strength hdrive; //enum GPIO_HDRIVE 0:2.4MA, 1:8MA, 2:26.4MA, 3:40MA u32 master_frequency; //软件iic频率(hz 不准) u8 ie_en; //中断使能 u8 irq_priority; //中断 //br27,28,36:0:close filter; 1:enable filter //br50:0:close filter; 1:<1*Tiic_baud_clk, 2:<2*Tiic_baud_clk, 3:<3*Tiic_baud_clk u8 io_filter; }; #include "iic_soft.h" #if defined CONFIG_IIC_VERSION2 #include "iic_hw_v2.h" #else #include "iic_hw_v1.h" #endif /******************************soft iic*****************************/ //如果无reg_addr:reg_addr=NULL,reg_len=0 //return: <0:error, =read_len:ok int soft_i2c_master_read_nbytes_from_device_reg(soft_iic_dev iic, unsigned char dev_addr, //设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *read_buf, int read_len);//缓存buf，读取长度 //如果无reg_addr:reg_addr=NULL,reg_len=0 //return: =write_len:ok, other:error int soft_i2c_master_write_nbytes_to_device_reg(soft_iic_dev iic, unsigned char dev_addr, //设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *write_buf, int write_len);//数据buf, 写入长度 /******************************hw iic master*****************************/ //如果无reg_addr:reg_addr=NULL,reg_len=0 //return: <0:error, =read_len:ok int hw_i2c_master_read_nbytes_from_device_reg(hw_iic_dev iic, unsigned char dev_addr, //设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *read_buf, int read_len);//缓存buf，读取长度 //如果无reg_addr:reg_addr=NULL,reg_len=0 //return: =write_len:ok, other:error int hw_i2c_master_write_nbytes_to_device_reg(hw_iic_dev iic, unsigned char dev_addr, //设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *write_buf, int write_len);//数据buf, 写入长度 //********************hw-iic for tp/alipay se/compass**********************// int system_iic_init(hw_iic_dev iic, struct iic_master_config *i2c_config); int system_iic_deinit(hw_iic_dev iic); void system_iic_reset(hw_iic_dev iic); int system_iic_suspend(hw_iic_dev iic); int system_iic_resume(hw_iic_dev iic); int system_iic_read_nbytes(hw_iic_dev iic, unsigned char dev_7bit_addr, //7位设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *read_buf, int read_len);//缓存buf，读取长度 int system_iic_write_nbytes(hw_iic_dev iic, unsigned char dev_7bit_addr, //7位设备地址 unsigned char *reg_addr, unsigned char reg_len,//设备寄存器地址，长度 unsigned char *write_buf, int write_len);//数据buf, 写入长度 #ifdef _IIC_USE_HW #define get_iic_config(iic) get_hw_iic_config(iic) #define iic_init(iic, config) hw_iic_init(iic, config) #define iic_deinit(iic) hw_iic_deinit(iic) #define iic_start(iic) hw_iic_start(iic) #define iic_stop(iic) hw_iic_stop(iic) #define iic_reset(iic) hw_iic_reset(iic) #define iic_err_reset(iic) hw_iic_err_reset(iic) #define iic_tx_byte(iic, byte) hw_iic_tx_byte(iic, byte) #define iic_rx_byte(iic, ack, err) hw_iic_rx_byte(iic, ack, err)//err:指针返回错误状态 #define iic_read_buf(iic, buf, len) hw_iic_read_buf(iic, buf, len) #define iic_write_buf(iic, buf, len) hw_iic_write_buf(iic, buf, len) #define iic_suspend(iic) hw_iic_suspend(iic) #define iic_resume(iic) hw_iic_resume(iic) #define i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) \ hw_i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) #define i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) \ hw_i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) #else #define get_iic_config(iic) get_soft_iic_config(iic) #define iic_init(iic, config) soft_iic_init(iic, config) #define iic_deinit(iic) soft_iic_deinit(iic) #define iic_start(iic) soft_iic_start(iic) #define iic_stop(iic) soft_iic_stop(iic) #define iic_reset(iic) soft_iic_reset(iic) #define iic_err_reset(iic) #define iic_tx_byte(iic, byte) soft_iic_tx_byte(iic, byte) #define iic_rx_byte(iic, ack, err) soft_iic_rx_byte(iic, ack, err) #define iic_read_buf(iic, buf, len) soft_iic_read_buf(iic, buf, len) #define iic_write_buf(iic, buf, len) soft_iic_write_buf(iic, buf, len) #define iic_suspend(iic) soft_iic_suspend(iic) #define iic_resume(iic) soft_iic_resume(iic) #define i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) \ soft_i2c_master_read_nbytes_from_device_reg(iic, dev_addr, reg_addr, reg_len, read_buf, read_len) #define i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) \ soft_i2c_master_write_nbytes_to_device_reg(iic, dev_addr, reg_addr, reg_len, write_buf, write_len) #endif /******************************hw iic slave*****************************/ int hw_iic_slave_polling_rx(hw_iic_dev iic, u8 *rx_buf); int hw_iic_slave_polling_tx(hw_iic_dev iic, u8 *tx_buf); #endif