huxi
210 lines
9.1 KiB
C
210 lines
9.1 KiB
C
#ifndef _IIC_HW_V2_H_
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#define _IIC_HW_V2_H_
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#include "system/generic/typedef.h"
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#include "gpio.h"
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#include "os/os_api.h"
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#define MASTER_IIC_WRITE_MODE_FAST_RESP 0
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#define MASTER_IIC_READ_MODE_FAST_RESP 0//接收移位,客户根据协议修改
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#define SLAVE_NO_STRETCH_AUTO_TASK 0 // 1+PULL_IIC_BUS=0:图3(no stretch)
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#define IIC_WHILE_TIMEOUT_CNT_ 100000 //等待pnd超时,单位:us(udelay()不准确)
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// #define IIC_PORT_GROUP_NUM 4
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#define iic_init_prepare(reg) (reg->CON = 1)
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#define iic_enable(reg) (reg->CON |= BIT(0))
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#define iic_disable(reg) (reg->CON &= ~BIT(0))
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#define is_iic_enable(reg) ((reg->CON & 0x03)==0x03)
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#define iic_rst_rst(reg) (reg->CON &= ~BIT(1))
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#define iic_rst_release(reg) (reg->CON |= BIT(1))
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#define iic_role_host(reg) (reg->CON &= ~BIT(2))
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#define iic_role_slave(reg) (reg->CON |= BIT(2))
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#define iic_flt_sel(reg,x) SFR(reg->CON, 3, 2, x)//0:close; 1:<1*Tiic_baud_clk, 2:<2*Tiic_baud_clk, 3:<3*Tiic_baud_clk
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#define iic_stretch_en(reg) (reg->CON &= ~BIT(5))
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#define iic_stretch_dis(reg) (reg->CON |= BIT(5))
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#define iic_ignore_nack_dis(reg) (reg->CON &= ~BIT(6))
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#define iic_ignore_nack_en(reg) (reg->CON |= BIT(6))
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#define iic_addr_resp_manu(reg) (reg->CON &= ~BIT(7))
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#define iic_addr_resp_auto(reg) (reg->CON |= BIT(7))
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#define iic_slv_rx_manu(reg) (reg->CON &= ~BIT(8))
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#define iic_slv_rx_auto(reg) (reg->CON |= BIT(8))
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#define iic_slv_tx_manu(reg) (reg->CON &= ~BIT(9))
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#define iic_slv_tx_auto(reg) (reg->CON |= BIT(9))
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#define iic_baddr_resp_dis(reg) (reg->CON &= ~BIT(10))
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#define iic_baddr_resp_en(reg) (reg->CON |= BIT(10))
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typedef enum {
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I2C_TASK_SEND_RESET = 0x0,
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I2C_TASK_SEND_ADDR = 0x1,
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I2C_TASK_SEND_DATA = 0x2,
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I2C_TASK_SEND_ACK = 0x3,
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I2C_TASK_SEND_NACK = 0x4,
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I2C_TASK_SEND_STOP = 0x5,
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I2C_TASK_SEND_NACK_STOP = 0x6,
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I2C_TASK_RECV_DATA = 0x7,
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I2C_TASK_RECV_DATA_ACK = 0x8,
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I2C_TASK_RECV_DATA_NACK = 0x9,
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} i2c_task_typedef;
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#define iic_task_sel(reg,x) SFR(reg->TASK, 0, 4, x)//i2c_task_typedef
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typedef enum {
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I2C_PND_TASK_DONE = BIT(20),
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I2C_PND_START = BIT(21),
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I2C_PND_STOP = BIT(22),
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I2C_PND_RXACK = BIT(23),
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I2C_PND_RXNACK = BIT(24),
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I2C_PND_ADR_MATCH = BIT(25),
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I2C_PND_RXDATA_DONE = BIT(26),
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I2C_PND_TXTASK_LOAD = BIT(27),
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I2C_PND_RXTASK_LOAD = BIT(28),
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} i2c_pnd_typedef;
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#define iic_set_task_ie(reg) (reg->PND |= BIT(0))
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#define iic_clr_task_ie(reg) (reg->PND &= ~BIT(0))
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#define iic_task_pnd(reg) (reg->PND & BIT(20))
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#define iic_task_pnd_clr(reg) (reg->PND |= BIT(10))
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#define iic_set_start_ie(reg) (reg->PND |= BIT(1))
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#define iic_clr_start_ie(reg) (reg->PND &= ~BIT(1))
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#define iic_start_pnd(reg) (reg->PND & BIT(21))
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#define iic_start_pnd_clr(reg) (reg->PND |= BIT(11))
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#define iic_set_stop_ie(reg) (reg->PND |= BIT(2))
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#define iic_clr_stop_ie(reg) (reg->PND &= ~BIT(2))
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#define iic_stop_pnd(reg) (reg->PND & BIT(22))
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#define iic_stop_pnd_clr(reg) (reg->PND |= BIT(12))
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#define iic_set_rxack_ie(reg) (reg->PND |= BIT(3))
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#define iic_clr_rxack_ie(reg) (reg->PND &= ~BIT(3))
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#define iic_rxack_pnd(reg) (reg->PND & BIT(23))
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#define iic_rxack_pnd_clr(reg) (reg->PND |= BIT(13))
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#define iic_set_rxnack_ie(reg) (reg->PND |= BIT(4))
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#define iic_clr_rxnack_ie(reg) (reg->PND &= ~BIT(4))
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#define iic_rxnack_pnd(reg) (reg->PND & BIT(24))
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#define iic_rxnack_pnd_clr(reg) (reg->PND |= BIT(14))
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#define iic_set_adr_match_ie(reg) (reg->PND |= BIT(5))
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#define iic_clr_adr_match_ie(reg) (reg->PND &= ~BIT(5))
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#define iic_adr_match_pnd(reg) (reg->PND & BIT(25))
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#define iic_adr_match_pnd_clr(reg) (reg->PND |= BIT(15))
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#define iic_set_rxdata_done_ie(reg) (reg->PND |= BIT(6))
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#define iic_clr_rxdata_done_ie(reg) (reg->PND &= ~BIT(6))
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#define iic_rxdata_done_pnd(reg) (reg->PND & BIT(26))
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#define iic_rxdata_done_pnd_clr(reg) (reg->PND |= BIT(16))
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#define iic_set_txtask_load_ie(reg) (reg->PND |= BIT(7))
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#define iic_clr_txtask_load_ie(reg) (reg->PND &= ~BIT(7))
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#define iic_txtask_load_pnd(reg) (reg->PND & BIT(27))
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#define iic_txtask_load_pnd_clr(reg) (reg->PND |= BIT(17))
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#define iic_set_rxtask_load_ie(reg) (reg->PND |= BIT(8))
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#define iic_clr_rxtask_load_ie(reg) (reg->PND &= ~BIT(8))
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#define iic_rxtask_load_pnd(reg) (reg->PND & BIT(28))
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#define iic_rxtask_load_pnd_clr(reg) (reg->PND |= BIT(18))
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#define iic_reset_pnd(reg) (reg->PND = 0x1ff << 10)
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#define iic_png_reg(reg) (reg->PND)
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#define iic_tx_buf_reg(reg) (reg->TX_BUF)
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#define iic_rx_buf_reg(reg) (reg->RX_BUF)//8bit only read
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#define iic_addr_reg(reg) (reg->ADDR)//bit0:r/w
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#define iic_baud_reg(reg) (reg->BAUD)//12bit BAUD_CNT > (SETUP_CNT+HOLD_CNT)>0
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#define iic_tsu_reg(reg) (reg->TSU)//7bit(0~6) sda信号保持时间
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#define iic_thd_reg(reg) (reg->THD)//7bit(0~6) sda信号建立时间
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#define iic_dbg_reg(reg) (reg->DBG)//32bit only read
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typedef const int hw_iic_dev;
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#include "asm/iic_hw.h"
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#include "iic_api.h"
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struct hw_iic_slave_config {
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struct iic_master_config config;
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void (*iic_slave_irq_func)(void);
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u8 slave_addr;//bit7~bit1
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};
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struct iic_master_config *get_hw_iic_config(hw_iic_dev iic);
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enum iic_state_enum hw_iic_init(hw_iic_dev iic, struct iic_master_config *i2c_config);
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enum iic_state_enum hw_iic_deinit(hw_iic_dev iic);
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enum iic_state_enum hw_iic_resume(hw_iic_dev iic);
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enum iic_state_enum hw_iic_suspend(hw_iic_dev iic);
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enum iic_state_enum hw_iic_check_busy(hw_iic_dev iic);
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enum iic_state_enum hw_iic_start(hw_iic_dev iic);
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void hw_iic_stop(hw_iic_dev iic);
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void hw_iic_reset(hw_iic_dev iic);
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void hw_iic_err_reset(hw_iic_dev iic);
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u8 hw_iic_tx_byte(hw_iic_dev iic, u8 byte);
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u8 hw_iic_rx_byte(hw_iic_dev iic, u8 ack, s8 *err);//err:错误返回
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int hw_iic_read_buf(hw_iic_dev iic, void *buf, int len);
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int hw_iic_write_buf(hw_iic_dev iic, const void *buf, int len);
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int hw_iic_set_baud(hw_iic_dev iic, u32 baud);
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void hw_iic_set_ack(hw_iic_dev iic, u8 ack_en);
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void hw_iic_set_ie(hw_iic_dev iic, i2c_pnd_typedef png, u8 en);
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u8 hw_iic_get_pnd(hw_iic_dev iic, i2c_pnd_typedef png);
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void hw_iic_clr_pnd(hw_iic_dev iic, i2c_pnd_typedef png);
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void hw_iic_clr_all_pnd(hw_iic_dev iic);
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//iic主机中断接口
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struct hw_iic_master_isr_transmit {
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u8 *data_buf;//收发数据buf
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u8 *reg_buf;//寄存器buf
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OS_SEM sem;
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u16 tx_len;//要发送的长tx_len,rx_len不能同时赋值
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u16 rx_len;//要接收的长tx_len,rx_len不能同时赋值
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u16 xfer_postion;//=0,返回通信数据长
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enum iic_state_enum result;//通信结果。0:ok,<0:error
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u8 reg_len;
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u8 dev_addr;//从机设备地址
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u8 restart_flag;//是否有restart.1:发送restart,0不发
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};
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//支持协议：
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//tx: start,addr write,data0,data1,,,,,,stop
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//rx：start,addr read,data0,data1,,,,,nack,stop
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//tx: start,addr write,regx,data0,data1,,,,,,stop
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//rx：start,addr write,regx,start,addr read,data0,data1,,,,,nack,stop
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//tx/rx：start,addr,regx write/read,data0,data1,,,,,nack,stop
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//会修改结构体值,每次调用需初始化结构体
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//timeout:byte间隔等待时间。0:一直等, >0:*10ms(超时未通信完直接stop), <0:不等待(需确保结构体参数在通信结束前有效)
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//不可在低优先级中断等
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enum iic_state_enum hw_iic_master_isr_transmit_cfg(hw_iic_dev iic, struct hw_iic_master_isr_transmit *info, int timeout);
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//非阻塞获取iic主机中断传输状态
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enum iic_state_enum hw_iic_master_isr_get_status(hw_iic_dev iic);
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//从机接口:
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enum iic_slave_rx_state {
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IIC_SLAVE_RX_PREPARE_TIMEOUT = -1,
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IIC_SLAVE_RX_PREPARE_OK = 0,
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IIC_SLAVE_RX_PREPARE_END_OK = 1,
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IIC_SLAVE_RX_ADDR_NO_MATCH = -2,
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IIC_SLAVE_RX_ADDR_TX = 2,
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IIC_SLAVE_RX_ADDR_RX = 3,
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IIC_SLAVE_RX_DATA = 4,
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};
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enum iic_state_enum hw_iic_slave_init(hw_iic_dev iic, struct hw_iic_slave_config *i2c_config);
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void hw_iic_slave_set_addr(hw_iic_dev iic, u8 addr, u8 addr_ack);
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void hw_iic_slave_set_isr_func(hw_iic_dev iic, void (*iic_slave_irq_func)(void));
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u8 hw_iic_slave_get_addr(hw_iic_dev iic);
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enum iic_slave_rx_state hw_iic_slave_rx_prepare(hw_iic_dev iic, u8 ack, u32 wait_time);//轮询, 准备收
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//判断地址，返回数据类型, 不检查结束位
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enum iic_slave_rx_state hw_iic_slave_rx_byte(hw_iic_dev iic, u8 *rx_byte);
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int hw_iic_slave_rx_nbyte(hw_iic_dev iic, u8 *rx_buf);//轮询,含结束位
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u8 hw_iic_slave_tx_check_ack(hw_iic_dev iic);//return:1:ack; 0:no ack
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void hw_iic_slave_tx_byte(hw_iic_dev iic, u8 byte);//准备发
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int hw_iic_slave_tx_nbyte(hw_iic_dev iic, u8 *tx_buf);//轮询,含结束位
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#endif
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