新手求指教，nuc120单片机作为I2C 从机的中断接收处理怎么编程

只看该作者 · 2015-7-27 18:17

现有2个新塘120，利用I2C通信模式，实现两个MCU 主从通信，主机已完成，从机调试不通，中断处理进不去，请高手指教
/*---------------------------------------------------------------------------------------------------------*/
/*                                                                                                       */
/* Copyright(c) 2009 Nuvoton Technology Corp. All rights reserved.                                        */
/*                                                                                                       */
/*---------------------------------------------------------------------------------------------------------*/
#include <stdio.h>
#include "DrvGPIO.h"
#include "DrvI2C.h"
#include "DrvSYS.h"
#include "DrvUART.h"

/*---------------------------------------------------------------------------------------------------------*/
/* Global variables                                                                                     */
/*---------------------------------------------------------------------------------------------------------*/
uint8_t Device_Addr0;
uint8_t Tx_Data0[3];
uint8_t Rx_Data0;
uint8_t DataLen0;
volatile uint8_t EndFlag0 = 0;

uint8_t  Addr1[3] = {0};
uint8_t  DataLen1;
uint8_t  Slave_Buff1[32] = {0};
uint16_t Slave_Buff_Addr1;

/*---------------------------------------------------------------------------------------------------------*/
/*  I2C1 (Slave) Callback Function                                                                      */
/*---------------------------------------------------------------------------------------------------------*/
void I2C1_Callback_Slave(uint32_t status)
{

printf(" NUC120_HOT_I2C1_Interrupt is running : Status 0x%x \n", status);

if ((status == 0x60) || (status == 0x68))    /* SLA+W has been received and ACK has been returned */
{
      DataLen1 = 0;
      DrvI2C_Ctrl(I2C_PORT1, 0, 0, 1, 1);
}
else if (status == 0x80)                      /* DATA has been received and ACK has been returned */
{
      Addr1[DataLen1++] = DrvI2C_ReadData(I2C_PORT1);

      if (DataLen1 == 2)
      {
         Slave_Buff_Addr1 = (Addr1[0] << 8) + Addr1[1];
      }

      if ((DataLen1 == 3) && (Slave_Buff_Addr1 < 32))
      {
         Slave_Buff1[Slave_Buff_Addr1] = Addr1[2];
         DataLen1 = 0;
      }

      DrvI2C_Ctrl(I2C_PORT1, 0, 0, 1, 1);
}
else if ((status == 0xB0) || (status == 0xA8))  /* SLA+R has been received and ACK has been returned */
{
      DrvI2C_WriteData(I2C_PORT1, Slave_Buff1[Slave_Buff_Addr1++]);
      if (Slave_Buff_Addr1 >= 32)
         Slave_Buff_Addr1 = 0;
      DrvI2C_Ctrl(I2C_PORT1, 0, 0, 1, 1);
}
else if (status == 0xC0)                      /* DATA has been transmitted and NACK has been received */
{
      DrvI2C_Ctrl(I2C_PORT1, 0, 0, 1, 1);
}
else if (status == 0xA0)                      /* STOP or Repeat START has been received */
{
      DataLen1 = 0;
      DrvI2C_Ctrl(I2C_PORT1, 0, 0, 1, 1);
}
else
{
      printf("Status 0x%x is NOT processed\n", status);
}
}

/*---------------------------------------------------------------------------------------------------------*/
/*  Main Function                                                                                        */
/*---------------------------------------------------------------------------------------------------------*/
int32_t main (void)
{
uint32_t u32data, i;
STR_UART_T sParam;

UNLOCKREG();
SYSCLK->PWRCON.XTL12M_EN = 1;

/* Waiting for 12M Xtal stalble */
DrvSYS_Delay(5000);

/* Set UART I/O */
DrvGPIO_InitFunction(E_FUNC_UART0);

/* Select UART Clock Source From 12MHz */
DrvSYS_SelectIPClockSource(E_SYS_UART_CLKSRC, 0);

/* UART Setting */
sParam.u32BaudRate    = 115200;
sParam.u8cDataBits    = DRVUART_DATABITS_8;
sParam.u8cStopBits    = DRVUART_STOPBITS_1;
sParam.u8cParity       = DRVUART_PARITY_NONE;
sParam.u8cRxTriggerLevel= DRVUART_FIFO_1BYTES;

/* Set UART Configuration */
DrvUART_Open(UART_PORT0, &sParam);

printf("+--------------------------------------------------------+\n");
printf("|                I2C Slave  Driver Sample Code       |\n");
printf("+--------------------------------------------------------+\n");
printf(" I/O Configuration: \n");
printf(" I2C1 SCL <-->PIN 4 \n");
printf(" I2C1 SDA <-->PIN 5 \n");
printf(" I2C1 VCC <-->I2C0 VCC \n");
printf(" I2C1 GND <-->I2C0 GND \n");
printf("\n");

/* Set I2C I/O */
DrvGPIO_InitFunction(E_FUNC_I2C1);

/* Open I2C1, and set clock = 100Kbps */
DrvI2C_Open(I2C_PORT1, 100000);

/* Set I2C0 slave addresses */
// DrvI2C_SetAddress(I2C_PORT0, 0, 0x15, 0);
// DrvI2C_SetAddress(I2C_PORT0, 1, 0x35, 0);
// DrvI2C_SetAddress(I2C_PORT0, 2, 0x55, 0);
// DrvI2C_SetAddress(I2C_PORT0, 3, 0x75, 0);

/* Set I2C1 slave addresses */
DrvI2C_SetAddress(I2C_PORT1, 0, 0x16, 0);
DrvI2C_SetAddress(I2C_PORT1, 1, 0x36, 0);
DrvI2C_SetAddress(I2C_PORT1, 2, 0x56, 0);
DrvI2C_SetAddress(I2C_PORT1, 3, 0x76, 0);

for (i = 0; i < 32; i++)
{
      Slave_Buff1[i] = 0;
}

/* Set AA bit, I2C1 as slave (To simulate a 24LXX EEPROM) */
DrvI2C_Ctrl(I2C_PORT1, 0, 0, 0, 1);


/* Enable I2C1 interrupt and set corresponding NVIC bit */
DrvI2C_EnableInt(I2C_PORT1);

/* Install I2C1 call back function for slave */
DrvI2C_InstallCallback(I2C_PORT1, I2CFUNC, I2C1_Callback_Slave);

printf("\n");
printf("I2C Slave Mode is Running.\n");

   while(1);
}

只看该作者 · 2015-7-27 19:58

I2C 从机处理代码

新手求指教，nuc120单片机作为I2C 从机的中断接收处理怎么编程

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