tinyriscv/sdk/bsp/include/i2c.h

// Generated register defines for i2c

// Copyright information found in source file:
// Copyright lowRISC contributors.

// Licensing information found in source file:
// Licensed under the Apache License, Version 2.0, see LICENSE for details.
// SPDX-License-Identifier: Apache-2.0

#ifndef _I2C_REG_DEFS_
#define _I2C_REG_DEFS_

#ifdef __cplusplus
extern "C" {
#endif
// Register width
#define I2C_PARAM_REG_WIDTH 32

#define I2C0_BASE_ADDR              (0x06000000)
#define I2C1_BASE_ADDR              (0x0B000000)

#define I2C0                        (I2C0_BASE_ADDR)
#define I2C1                        (I2C1_BASE_ADDR)

#define I2C_REG(base, offset)       (*((volatile uint32_t *)(base + offset)))

typedef enum {
    I2C_MODE_MASTER = 0,
    I2C_MODE_SLAVE
} i2c_mode_e;

void i2c_set_clk(uint32_t base, uint16_t clk_div);
void i2c_set_mode(uint32_t base, i2c_mode_e mode);
void i2c_master_set_write(uint32_t base, uint8_t yes);
void i2c_set_interrupt_enable(uint32_t base, uint8_t en);
void i2c_clear_irq_pending(uint32_t base);
uint8_t i2c_get_irq_pending(uint32_t base);
void i2c_master_set_info(uint32_t base, uint8_t addr, uint8_t reg, uint8_t data);
uint8_t i2c_master_get_data(uint32_t base);
void i2c_slave_set_address(uint32_t base, uint8_t addr);
void i2c_slave_set_ready(uint32_t base, uint8_t yes);
uint8_t i2c_slave_op_read(uint32_t base);
uint32_t i2c_slave_get_op_address(uint32_t base);
uint32_t i2c_slave_get_op_data(uint32_t base);
void i2c_slave_set_rsp_data(uint32_t base, uint32_t data);
void i2c_start(uint32_t base);
void i2c_stop(uint32_t base);

// I2C control register
#define I2C_CTRL_REG_OFFSET 0x0
#define I2C_CTRL_REG_RESVAL 0x0
#define I2C_CTRL_START_BIT 0
#define I2C_CTRL_INT_EN_BIT 1
#define I2C_CTRL_INT_PENDING_BIT 2
#define I2C_CTRL_MODE_BIT 3
#define I2C_CTRL_WRITE_BIT 4
#define I2C_CTRL_ERROR_BIT 5
#define I2C_CTRL_SLAVE_WR_BIT 6
#define I2C_CTRL_SLAVE_RDY_BIT 7
#define I2C_CTRL_SLAVE_ADDR_MASK 0xff
#define I2C_CTRL_SLAVE_ADDR_OFFSET 8
#define I2C_CTRL_SLAVE_ADDR_FIELD \
  ((bitfield_field32_t) { .mask = I2C_CTRL_SLAVE_ADDR_MASK, .index = I2C_CTRL_SLAVE_ADDR_OFFSET })
#define I2C_CTRL_CLK_DIV_MASK 0xffff
#define I2C_CTRL_CLK_DIV_OFFSET 16
#define I2C_CTRL_CLK_DIV_FIELD \
  ((bitfield_field32_t) { .mask = I2C_CTRL_CLK_DIV_MASK, .index = I2C_CTRL_CLK_DIV_OFFSET })

// I2C master transfer data register
#define I2C_MASTER_DATA_REG_OFFSET 0x4
#define I2C_MASTER_DATA_REG_RESVAL 0x0
#define I2C_MASTER_DATA_ADDRESS_MASK 0xff
#define I2C_MASTER_DATA_ADDRESS_OFFSET 0
#define I2C_MASTER_DATA_ADDRESS_FIELD \
  ((bitfield_field32_t) { .mask = I2C_MASTER_DATA_ADDRESS_MASK, .index = I2C_MASTER_DATA_ADDRESS_OFFSET })
#define I2C_MASTER_DATA_REGREG_MASK 0xff
#define I2C_MASTER_DATA_REGREG_OFFSET 8
#define I2C_MASTER_DATA_REGREG_FIELD \
  ((bitfield_field32_t) { .mask = I2C_MASTER_DATA_REGREG_MASK, .index = I2C_MASTER_DATA_REGREG_OFFSET })
#define I2C_MASTER_DATA_DATA_MASK 0xff
#define I2C_MASTER_DATA_DATA_OFFSET 16
#define I2C_MASTER_DATA_DATA_FIELD \
  ((bitfield_field32_t) { .mask = I2C_MASTER_DATA_DATA_MASK, .index = I2C_MASTER_DATA_DATA_OFFSET })

// I2C slave read or write address register
#define I2C_SLAVE_ADDR_REG_OFFSET 0x8
#define I2C_SLAVE_ADDR_REG_RESVAL 0x0

// I2C slave write data register
#define I2C_SLAVE_WDATA_REG_OFFSET 0xc
#define I2C_SLAVE_WDATA_REG_RESVAL 0x0

// I2C slave read data register
#define I2C_SLAVE_RDATA_REG_OFFSET 0x10
#define I2C_SLAVE_RDATA_REG_RESVAL 0x0

#ifdef __cplusplus
}  // extern "C"
#endif
#endif  // _I2C_REG_DEFS_
// End generated register defines for i2c