2, 2, 4, 8, 22, 62
时间: 2024-03-18 11:35:55 浏览: 68
以下是使用RA4M2的I2C接口作为I2C主机进行通信的配置和发送数据的示例代码:
```c
#include "r_sci_i2c.h"
#define I2C_MASTER_SLAVE_ADDR 0x3C
/* I2C callback function */
i2c_master_event_t i2c_event = I2C_MASTER_EVENT_ABORTED;
void sci_i2c_master_callback(i2c_master_callback_args_t *p_args) {
i2c_event = I2C_MASTER_EVENT_ABORTED;
if (NULL != p_args) {
/* capture callback event for validating the i2c transfer event */
i2c_event = p_args->event;
}
}
void i2c_master_example(void) {
uint8_t data[] = {2,2, 4, 8, 22, 62};
uint32_t data_length = sizeof(data) / sizeof(data[0]);
/* Open I2C channel */
R_SCI_I2C_Open(&g_i2c_ctrl, &g_i2c_cfg);
/* Set slave address */
R_SCI_I2C_SlaveAddressSet(&g_i2c_ctrl, I2C_MASTER_SLAVE_ADDR);
/* Set callback function */
R_SCI_I2C_CallbackSet(&g_i2c_ctrl, sci_i2c_master_callback);
/* Send data */
R_SCI_I2C_Write(&g_i2c_ctrl, data, data_length);
/* Wait for data transmission to complete */
while (i2c_event != I2C_MASTER_EVENT_TX_COMPLETE) {}
/* Close I2C channel */
R_SCI_I2C_Close(&g_i2c_ctrl);
}
```
请注意,以上代码仅为示例,具体的配置和使用方法可能因为不同的开发板和库而有所不同。请根据您的具体情况进行相应的修改。