mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
34 lines
790 B
C
34 lines
790 B
C
// See LICENSE for license details.
|
|
|
|
#ifndef _SIFIVE_I2C_H
|
|
#define _SIFIVE_I2C_H
|
|
|
|
/* Register offsets */
|
|
#define I2C_PRESCALE_LO (0x00)
|
|
#define I2C_PRESCALE_HI (0x04)
|
|
#define I2C_CONTROL (0x08)
|
|
#define I2C_DATA (0x0C)
|
|
#define I2C_CMD (0x10)
|
|
#define I2C_STATUS (0x10)
|
|
|
|
/* CONTROL register */
|
|
#define I2C_CONTROL_EN (1 << 7)
|
|
#define I2C_CONTROL_IE (1 << 6)
|
|
|
|
/* CMD register */
|
|
#define I2C_CMD_STA (1 << 7)
|
|
#define I2C_CMD_STO (1 << 6)
|
|
#define I2C_CMD_RD (1 << 5)
|
|
#define I2C_CMD_WR (1 << 4)
|
|
#define I2C_CMD_ACK (1 << 3)
|
|
#define I2C_CMD_IACK (1 << 0)
|
|
|
|
/* STATUS register */
|
|
#define I2C_STATUS_RXACK (1 << 7)
|
|
#define I2C_STATUS_BUSY (1 << 6)
|
|
#define I2C_STATUS_ALOST (1 << 5)
|
|
#define I2C_STATUS_TIP (1 << 1)
|
|
#define I2C_STATUS_IF (1 << 0)
|
|
|
|
#endif /* _SIFIVE_I2C_H */
|