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feat[i2c]: add bus configuration and max-hz control

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This commit is contained in:
wdfk-prog
2026-03-12 15:15:02 +08:00
committed by Rbb666
parent 4617729c4c
commit b0af22a96f
2 changed files with 55 additions and 9 deletions
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components/drivers/include/drivers/dev_i2c.h
+19
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@@ -7,6 +7,7 @@
* Date Author Notes
* 2012-04-25 weety first version
* 2021-04-20 RiceChen added support for bus control api
* 2024-06-23 wdfk-prog Add the config struct
*/
#ifndef __DEV_I2C_H__
@@ -185,6 +186,8 @@ extern "C" {
#define RT_I2C_NO_READ_ACK (1u << 6) /* when I2C reading, we do not ACK */
#define RT_I2C_NO_STOP (1u << 7) /*!< do not generate STOP condition */
#define RT_I2C_CTRL_SET_MAX_HZ 0x20
#define RT_I2C_DEV_CTRL_10BIT (RT_DEVICE_CTRL_BASE(I2CBUS) + 0x01)
#define RT_I2C_DEV_CTRL_ADDR (RT_DEVICE_CTRL_BASE(I2CBUS) + 0x02)
#define RT_I2C_DEV_CTRL_TIMEOUT (RT_DEVICE_CTRL_BASE(I2CBUS) + 0x03)
@@ -233,6 +236,21 @@ struct rt_i2c_bus_device_ops
void *args);
};
/**
* I2C configuration structure.
* mode : master: 0x00; slave: 0x01;
* max_hz: Maximum limit baud rate.
* usage_freq: Actual usage baud rate.
*/
struct rt_i2c_configuration
{
rt_uint8_t mode;
rt_uint8_t reserved[3];
rt_uint32_t max_hz;
rt_uint32_t usage_freq;
};
/**
* @brief I2C Bus Device
*/
@@ -244,6 +262,7 @@ struct rt_i2c_bus_device
struct rt_mutex lock;
rt_uint32_t timeout;
rt_uint32_t retries;
struct rt_i2c_configuration config;
void *priv;
};