83 lines
3.0 KiB
C
83 lines
3.0 KiB
C
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#ifndef _IIC_HW_H_
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#define _IIC_HW_H_
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#include "system/generic/typedef.h"
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#define IIC_HW_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 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_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_baud_reg(reg) (reg->BAUD)
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#define iic_buf_reg(reg) (reg->BUF)
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typedef const int hw_iic_dev;
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enum {IIC_MASTER, IIC_SLAVE};
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struct hw_iic_config {
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u8 port; //example: 'A', 'B', 'C', 'D'
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u32 baudrate;
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u8 hdrive;
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u8 io_filter;
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u8 io_pu;
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u8 role;
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};
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extern const struct hw_iic_config hw_iic_cfg[];
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int hw_iic_init(hw_iic_dev iic);
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void hw_iic_uninit(hw_iic_dev iic);
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void hw_iic_suspend(hw_iic_dev iic);
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void hw_iic_resume(hw_iic_dev iic);
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void hw_iic_start(hw_iic_dev iic);
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void hw_iic_stop(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);
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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_ie(hw_iic_dev iic, u8 en);
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u8 hw_iic_get_pnd(hw_iic_dev iic);
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void hw_iic_clr_pnd(hw_iic_dev iic);
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void hw_iic_set_end_ie(hw_iic_dev iic, u8 en);
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u8 hw_iic_get_end_pnd(hw_iic_dev iic);
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void hw_iic_clr_end_pnd(hw_iic_dev iic);
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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_rx_prepare(hw_iic_dev iic, u8 ack);
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u8 hw_iic_slave_rx_byte(hw_iic_dev iic, bool *is_start_addr);
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void hw_iic_slave_tx_byte(hw_iic_dev iic, u8 byte);
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u8 hw_iic_slave_tx_check_ack(hw_iic_dev iic);
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#endif
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