aplfw/driver/serial/at91/at91uartdrv_isr.c

   1 /**
   2  *  Hyper Operating System  Application Framework
   3  *
   4  * @file  at91uartdrv_isr.c
   5  * @brief %jp{ATMEL AT91シリーズUART用デバイスドライバ}
   6  *
   7  * Copyright (C) 2006-2007 by Project HOS
   8  * http://sourceforge.jp/projects/hos/
   9  */
  10
  11
  12 #include "at91uartdrv_local.h"
  13
  14
  15 /* 受信割り込み */
  16 void At91UartDrv_Isr(VPARAM Param)
  17 {
  18         C_AT91UARTDRV   *self;
  19         unsigned long   uwCsr;
  20         int                             c;
  21
  22         self = (C_AT91UARTDRV *)Param;
  23
  24         uwCsr = AT91UART_REG_READ(self, AT91UART_US_CSR);
  25
  26         /* 受信 */
  27         if ( uwCsr & 0x00000001 )
  28         {
  29                 do
  30                 {
  31                         c = AT91UART_REG_READ(self, AT91UART_US_RHR);
  32                         StreamBuf_SendChar(&self->StmBufRecv, c);
  33                         uwCsr = AT91UART_REG_READ(self, AT91UART_US_CSR);
  34                 } while ( uwCsr & 0x00000001 );
  35
  36                 SysEvt_Set(self->hEvtRecv);
  37         }
  38
  39         /* 送信チェック */
  40         if ( uwCsr & 0x00000002 )
  41         {
  42                 AT91UART_REG_WRITE(self, AT91UART_US_IDR, 0x00000002);  /* 送信割り込み禁止 */
  43                 SysEvt_Set(self->hEvtSend);
  44         }
  45 }
  46
  47
  48 /* end of file */