huxi
120 lines
4.6 KiB
C
120 lines
4.6 KiB
C
#ifndef _IIC_HW_V1_H_
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#define _IIC_HW_V1_H_
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#include "system/generic/typedef.h"
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#include "gpio.h"
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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 MAX_HW_IIC_NUM 1
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// #define IIC_PORT_GROUP_NUM 4
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#define iic_enable(reg) (reg->CON0 |= BIT(0))
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#define iic_disable(reg) (reg->CON0 &= ~BIT(0))
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#define is_iic_enable(reg) (reg->CON0 & BIT(0))
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#define iic_role_host(reg) (reg->CON0 &= ~BIT(1))
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#define iic_role_slave(reg) (reg->CON0 |= BIT(1))
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#define iic_cfg_done(reg) (reg->CON0 |= BIT(2))
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#define iic_dir_out(reg) (reg->CON0 &= ~BIT(3))
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#define iic_dir_in(reg) (reg->CON0 |= BIT(3))
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#define iic_preset_end(reg) (reg->CON0 |= BIT(4))
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#define iic_preset_restart(reg) (reg->CON0 |= BIT(5))
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#define iic_recv_ack(reg) (reg->CON0 &= ~BIT(6))
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#define iic_recv_nack(reg) (reg->CON0 |= BIT(6))
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#define iic_send_is_ack(reg) (!(reg->CON0 & BIT(7)))
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#define iic_isel_direct(reg) (reg->CON0 &= ~BIT(9))
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#define iic_isel_filter(reg) (reg->CON0 |= BIT(9))
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#define iic_isel_filter_en(reg) (reg->CON0 &= ~BIT(11))//only br27
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#define iic_isel_bypass(reg) (reg->CON0 |= BIT(11)) //only br27
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#define iic_si_mode_en(reg) (reg->CON1 |= BIT(13))
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#define iic_si_mode_dis(reg) (reg->CON1 &= ~BIT(13))
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#define iic_set_ie(reg) (reg->CON0 |= BIT(8))
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#define iic_clr_ie(reg) (reg->CON0 &= ~BIT(8))
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#define iic_pnd(reg) (reg->CON0 & BIT(15))
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#define iic_pnd_clr(reg) (reg->CON0 |= BIT(14))
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#define iic_set_end_ie(reg) (reg->CON0 |= BIT(10))
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#define iic_clr_end_ie(reg) (reg->CON0 &=~BIT(10))
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#define iic_end_pnd(reg) (reg->CON0 & BIT(13))
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#define iic_end_pnd_clr(reg) (reg->CON0 |= BIT(12))
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#define iic_start_pnd(reg) (reg->CON1 & BIT(15))
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#define iic_start_pnd_clr(reg) (reg->CON1 |= BIT(14))
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#define iic_reset0(reg) (reg->CON0 = (BIT(14)|BIT(12)))
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#define iic_reset1(reg) (reg->CON1 = BIT(14))
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#define iic_baud_reg(reg) (reg->BAUD)
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#define iic_buf_reg(reg) (reg->BUF)
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typedef enum {
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I2C_PND_TASK_DONE,
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I2C_PND_START,//no ie
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I2C_PND_STOP,
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} i2c_pnd_typedef;
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enum {
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HW_IIC_0,
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};
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typedef const u8 hw_iic_dev;
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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);//无效
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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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//return: =len:ok
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int hw_iic_read_buf(hw_iic_dev iic, void *buf, int len);
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//return: =len:ok
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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_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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//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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