c_handler.c

ARM入门的好帮手.包含了从简单到相对较复杂的程序.

//*----------------------------------------------------------------------------
//*      ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : c_handler.c
//* Object              : Irq C handler definition
//*
//* 1.0 31/08/00 JPP    : Creation
//*----------------------------------------------------------------------------

#include    "periph/stdc/std_c.h"
#include    "periph/timer_counter/lib_tc.h"
#include    "drivers/analog/analog.h"
#include    <stdio.h>

#include "lib_tools.h"
//*----------------------------------------------------------------------------
//* Function Name       : at91_c_handler_check_pdc
//* Object              : C handler interrup function called by the interrups
//*                       assembling routine
//* Input Parameters    : <Irq Descriptor> Analog DAC Interrupt descriptor
//* Output Parameters   : none
//*----------------------------------------------------------------------------

void at91_c_handler_check_pdc(AnalogDACTimerIrqDesc *desc)
//* Begin
{
    u_int tmp;
    u_int pt,dhr,dor,cmpt;
    if (timer_interrup.echo)
    {
        pt= desc->dac->dac_base->DAC_DPR;
        cmpt = desc->dac->dac_base->DAC_DCR;
        dor = desc->dac->dac_base->DAC_DOR;
        dhr = desc->dac->dac_base->DAC_DHR;

        timer_interrup.cmpt++;
        sprintf(message,"%08X %02X %04X %04X %04X\n\r",pt,cmpt,dhr,dor,timer_interrup.cmpt);
        at91_print(&COM,message);
    }

    //* -- Deasert timer interrupt by read Status register (TC_SR)
    tmp =desc->timer->tc_base->TC_SR ;
//* End
}

//*----------------------------------------------------------------------------
//* Function Name       : at91_c_handler_timer
//* Object              : C handler interrup function called by the interrups
//*                       assembling routine
//* Input Parameters    : <Irq Descriptor> Analog DAC Interrupt descriptor
//* Output Parameters   : none
//*----------------------------------------------------------------------------
void at91_c_handler_timer(AnalogDACTimerIrqDesc *desc)
//* Begin
{
    u_int tmp;
    u_int pt,dhr,dor,cmpt;
    //* Write the current value in the DAC
    desc->dac->dac_base->DAC_DHR = *(desc->pdc.cur_add);

    if (desc->pdc.cur_cmpt !=0)
    {
       desc->pdc.cur_add++;
       desc->pdc.cur_cmpt--;
    }
    else
    {
       desc->pdc.cur_add = desc->pdc.base_add ;
       desc->pdc.cur_cmpt= desc->pdc.base_cmpt;
    } //* End Update
    if (timer_interrup.echo)
    {

        pt= desc->dac->dac_base->DAC_DPR;
        cmpt = desc->dac->dac_base->DAC_DCR;
        dor = desc->dac->dac_base->DAC_DOR;
        dhr = desc->dac->dac_base->DAC_DHR;

        timer_interrup.cmpt++;
        sprintf(message,"%08X %02X %04X %04X %04X\n\r",pt,cmpt,dhr,dor,timer_interrup.cmpt);
        at91_print(&COM,message);
    }

    //* -- Deasert timer interrupt by read Status register (TC_SR)
    tmp =desc->timer->tc_base->TC_SR ;
//* End
}

//*----------------------------------------------------------------------------
//* Function Name       : at91_c_handler_adc
//* Object              : C handler interrup function called by the interrups
//*                       assembling routine
//* Input Parameters    : ADC descriptor ,ADC mode for trig
//* Output Parameters   : none
//*----------------------------------------------------------------------------
void at91_c_handler_adc(AnalogAdcIrqDesc *desc)
{
     u_short   adc_val;

    //* Read Channel
    adc_val = desc->adc->adc_base->ADC_CDR[desc->adc_channel];

    //* check if PDC mode is used
    if ( desc->pdc.base_add != 0)
    {
        //* Write the current value in the Memory
        *(desc->pdc.cur_add) =adc_val ;
        //* Update the pointer
        if (desc->pdc.cur_cmpt !=0)
        {
           desc->pdc.cur_add++;
           desc->pdc.cur_cmpt--;
        }
        else
        {
           desc->pdc.cur_add = desc->pdc.base_add ;
           desc->pdc.cur_cmpt= desc->pdc.base_cmpt;
        } //* End Update
    } //* End of PDC

    //* check if loop mode
    if (desc->loop_mode == LOOP_DAC)
            at91_dac_write(desc->dac_loop, &adc_val );
    //* general information
    timer_interrup.read=adc_val;
    if (timer_interrup.min > adc_val) timer_interrup.min = adc_val;
    if (timer_interrup.max < adc_val) timer_interrup.max = adc_val;
    timer_interrup.moy += adc_val;
    timer_interrup.nb_read++;
}