主芯片通过I2C向od2101发送数据，od2101作为从机，从机地址为0x5c,通过I2C向从机寄存器0x03写数据0xfd，然后再从此寄存器读出数据，但读出的数据却是0x2d,目前不知道为什么读出的是0x2d,向各位大神请教，如下是部分代码：
#define WR 0x00
#define RD 0x00
#define UARTBUF 0x01
#define I2CBUF 0x02
#define CTRL 0x03
uint8_t recv_buf[50]={0};
uint8_t recv_data;
uint8_t recv_data1;
Usart_SendStr(UARTCH0, "OD2101_test ");
recv_data = 0xfd;//( recv_data & 0xf0 ) | 0 ;
I2C_MasterWriteData(I2C1,I2C_DEVADDR,CTRL,&recv_data,1);/*·¢ËÍ¿ØÖÆ×Ö
Usart_SendStr(UARTCH0, "OD2101_test1 ");
I2C_MasterReadData(I2C1,I2C_DEVADDR,&recv_data1,CTRL,4);
printf("recv_data1=%x ",recv_data1);
#define WR 0x00
#define RD 0x00
#define UARTBUF 0x01
#define I2CBUF 0x02
#define CTRL 0x03
uint8_t recv_buf[50]={0};
uint8_t recv_data;
uint8_t recv_data1;
Usart_SendStr(UARTCH0, "OD2101_test ");
recv_data = 0xfd;//( recv_data & 0xf0 ) | 0 ;
I2C_MasterWriteData(I2C1,I2C_DEVADDR,CTRL,&recv_data,1);/*·¢ËÍ¿ØÖÆ×Ö
Usart_SendStr(UARTCH0, "OD2101_test1 ");
I2C_MasterReadData(I2C1,I2C_DEVADDR,&recv_data1,CTRL,4);
printf("recv_data1=%x ",recv_data1);
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