项目中需要利用C6413完成一个I2C的串行通讯，用到了I2C 的slave模式。
现在正在用仿真器调试程序，后面是一段I2C初始化函数。运行初始化函数后，用仿真器查看寄存器里的值，发现寄存器里的值还全是0x00000000。
希望获得帮助。最好在提供一个例程。原先函数调用了库里提供的函数，现在直接采用寄存器赋值方式来初始化。
Uint32 I2C_init()
{
//hI2C = I2C_open(I2C_DEV0, I2C_OPEN_RESET);
//I2C_reset(hI2C);
//*(uint32 *)(I2CMDR0) = 0x00006820;
*(uint32 *)(I2CMDR0) &= ~0x20;
*(uint32 *)(I2CPSC0) = 0x00000015;
*(uint32 *)(I2CCLKL0) = 0x00000013;
*(uint32 *)(I2CCLKH0) = 0x00000013;
*(uint32 *)(I2CMDR0) = 0x00006820;
/*
bit15: NACKMOD 0; the last byte set to 1
bit14: FREE 1;
bit13: STT 1; no use
bit12: RSV 0; no use
bit11: STP 1; no use
bit10: MST 0; slave mode
bit 9: TRX 0; receiver mode
bit 8: XA 0; 7 bit address
bit 7: RM 0; no use
bit 6: DLB 0; no use LOOPBACK
bit 5: IRS 1; Enable I2C module
bit 4: STB 0; disable start Byte mode
bit 3: FDF 0; address mode,not free data fomat;
bit 2-0: BC 000; byte count
*/
*(uint32 *)I2COAR0 = 0x0000005A; /*Slave address = 0x5A*/
*(uint32 *)I2CIMR0 = 0x00000000; /*Disable all interrupt*/
return 0；
}
