static void SerialDrv_ISR_Handler (SERIAL_DEV *pdev,
CPU_INT08U type)
{
CPU_INT08U datum;
CPU_INT32U lsr;
CPU_INT32U iir;
CPU_INT08U iir_int_id;
SERIAL_DRV_REG *p_reg;
SERIAL_DEV_CFG *p_cfg;
(void)&type;
p_cfg = pdev->Dev_Cfg;
p_reg = (SERIAL_DRV_REG *)p_cfg->BaseAddr;
iir = p_reg->IIR; /* Read te interrupt indentification register */
/* If at least one interrupt is pending ... */
while (DEF_BIT_IS_CLR(iir, SERIAL_DRV_LPCXXXX_BIT_IIR_INT_STAT)) {
iir_int_id = (CPU_INT08U)((iir & SERIAL_DRV_LPCXXXX_MSK_IIR_INT_ID) >> 1u);
switch (iir_int_id) {
case SERIAL_DRV_LPCXXXX_BIT_IIR_INT_ID_RLS: /*Rx Line Status */
lsr = p_reg->LSR;
break;
case SERIAL_DRV_LPCXXXX_BIT_IIR_INT_ID_CTI: /* Character time-out */
case SERIAL_DRV_LPCXXXX_BIT_IIR_INT_ID_RDA: /* Rx data available */
lsr = p_reg->LSR;
if (DEF_BIT_IS_CLR(lsr, SERIAL_DRV_LPCXXXX_BIT_LSR_RX_ERR)) {
datum = (CPU_INT08U)(p_reg->RBR & DEF_INT_08_MASK);
SerialIF_Rx(pdev, datum);
}
break;
case SERIAL_DRV_LPCXXXX_BIT_IIR_INT_ID_THRE: /* Transmit Holding register */
SerialIF_Tx(pdev); /* Inform serial core of wr completion. */
break;
default:
break;
}
iir = p_reg->IIR;
}
}
static void SerialLine_RdOctet (SERIAL_DEV *pdev,
SERIAL_BUF *pbuf,
CPU_INT08U *pdatum,
SERIAL_ERR *perr)
{
SERIAL_LINE_INFO *pinfo;
CPU_BOOLEAN rd;
pinfo = (SERIAL_LINE_INFO *)pdev->LineDrv_Data;
switch (pinfo->TxState) {
case SERIAL_LINE_TTY_TX_STATE_CR: /* ---------------- TX CARRIAGE RETURN ---------------- */
pinfo->TxState = SERIAL_LINE_TTY_TX_STATE_NORMAL;
*pdatum = ASCII_CHAR_CARRIAGE_RETURN;
*perr = SERIAL_ERR_NONE;
return;
case SERIAL_LINE_TTY_TX_STATE_NORMAL: /* --------------------- TX OCTETS -------------------- */
rd = SerialBuf_RdOctet(pbuf, pdatum);
if (rd == DEF_NO) {
*perr = SERIAL_ERR_UNDERFLOW;
return;
}
if (*pdatum == ASCII_CHAR_LINE_FEED) {
pinfo->TxState = SERIAL_LINE_TTY_TX_STATE_CR;
}
break;
}
#if (SERIAL_CFG_RD_BUF_EN == DEF_ENABLED) /* Echo data. */
pinfo = (SERIAL_LINE_INFO *)pdev->LineDrv_Data;
if (pinfo->EchoTx == DEF_ENABLED) {
SerialIF_Rx(pdev, *pdatum);
}
#endif
*perr = SERIAL_ERR_NONE;
}
