void _kuart_int_rx_tx_isr
(
/* [IN] the address of the device specific information */
pointer parameter
)
{ /* Body */
IO_SERIAL_INT_DEVICE_STRUCT_PTR int_io_dev_ptr = parameter;
KUART_INFO_STRUCT_PTR sci_info_ptr = int_io_dev_ptr->DEV_INFO_PTR;
UART_MemMapPtr sci_ptr = sci_info_ptr->SCI_PTR;
volatile int_32 c;
#if MQX_ENABLE_LOW_POWER
if (int_io_dev_ptr->LPM_INFO.FLAGS & IO_PERIPHERAL_WAKEUP_ENABLE)
{
/* Disable wakeup settings */
int_io_dev_ptr->LPM_INFO.FLAGS &= (~ IO_PERIPHERAL_WAKEUP_ENABLE);
sci_ptr->C2 &= (~ (UART_C2_RWU_MASK));
sci_ptr->C1 &= (~ (UART_C1_WAKE_MASK | UART_C1_ILT_MASK));
sci_ptr->C4 &= (~ (UART_C4_MAEN1_MASK | UART_C4_MAEN2_MASK));
sci_ptr->MA1 = 0;
sci_ptr->MA2 = 0;
/* Do not return to CPU sleep anymore */
if (int_io_dev_ptr->LPM_INFO.FLAGS & IO_PERIPHERAL_WAKEUP_SLEEPONEXIT_DISABLE)
{
int_io_dev_ptr->LPM_INFO.FLAGS &= (~ IO_PERIPHERAL_WAKEUP_SLEEPONEXIT_DISABLE);
_lpm_wakeup_core ();
}
}
#endif
++sci_info_ptr->INTERRUPTS;
/* try if RX buffer has some characters */
if (sci_ptr->S1 & UART_S1_RDRF_MASK) {
c = sci_ptr->D;
if (!_io_serial_int_addc(int_io_dev_ptr, c)) {
sci_info_ptr->RX_DROPPED_INPUT++;
}
sci_info_ptr->RX_CHARS++;
}
/* try if TX buffer is still not full */
if (sci_ptr->S1 & UART_S1_TDRE_MASK) {
c = _io_serial_int_nextc(int_io_dev_ptr);
if (c >= 0) {
sci_ptr->D = c;
} else {
/* All data sent, disable transmit interrupt */
sci_ptr->C2 &= ~UART_C2_TIE_MASK;
}
sci_info_ptr->TX_CHARS++;
}
} /* Endbody */
void _mcf54xx_uart_serial_int_isr
(
/* [IN] the address of the device specific information */
pointer parameter
)
{ /* Body */
IO_SERIAL_INT_DEVICE_STRUCT_PTR int_io_dev_ptr = parameter;
MCF54XX_UART_SERIAL_INFO_STRUCT_PTR uart_info_ptr;
volatile MCF54XX_UART_STRUCT _PTR_ uart_ptr;
int_32 c;
uint_16 stat;
boolean work;
uart_info_ptr = int_io_dev_ptr->DEV_INFO_PTR;
uart_ptr = uart_info_ptr->UART_PTR;
++uart_info_ptr->INTERRUPTS;
/* Receive loop */
work = TRUE;
while (work) {
work = FALSE;
stat = uart_ptr->READ.USR;
while (stat & MCF54XX_UART_USR_RXRDY) {
c = uart_ptr->READ.URB; /* this clears the status bit */
if (stat & (MCF54XX_UART_USR_RB | MCF54XX_UART_USR_FE |
MCF54XX_UART_USR_PE | MCF54XX_UART_USR_OE))
{
if (stat & MCF54XX_UART_USR_RB) {
++uart_info_ptr->RX_BREAKS;
c = uart_ptr->READ.URB; /* read break character */
uart_ptr->WRITE.UCR = MCF54XX_UART_UCR_RESET_BREAK;
} /* Endif */
if (stat & MCF54XX_UART_USR_FE) {
++uart_info_ptr->RX_FRAMING_ERRORS;
} /* Endif */
if (stat & MCF54XX_UART_USR_PE) {
++uart_info_ptr->RX_PARITY_ERRORS;
} /* Endif */
if (stat & MCF54XX_UART_USR_OE) {
++uart_info_ptr->RX_OVERRUNS;
} /* Endif */
uart_ptr->WRITE.UCR = MCF54XX_UART_UCR_RESET_ERROR;
} /* Endif */
uart_info_ptr->RX_CHARS++;
work = TRUE;
if (!_io_serial_int_addc(int_io_dev_ptr, c)) {
uart_info_ptr->RX_DROPPED_INPUT++;
} /* Endif */
stat = uart_ptr->READ.USR;
} /* Endwhile */
while (stat & MCF54XX_UART_USR_TXRDY) {
c = _io_serial_int_nextc(int_io_dev_ptr);
if (c >= 0) {
work = TRUE;
uart_ptr->WRITE.UTB = c;
uart_info_ptr->INT_ENABLE_BITS |= MCF54XX_UART_UIMR_TXRDY;
uart_ptr->WRITE.UIMR = uart_info_ptr->INT_ENABLE_BITS;
} else {
/* No output. Turn off transmit interrupt */
uart_info_ptr->INT_ENABLE_BITS &= ~MCF54XX_UART_UIMR_TXRDY;
uart_ptr->WRITE.UIMR = uart_info_ptr->INT_ENABLE_BITS;
break;
} /* Endif */
stat = uart_ptr->READ.USR;
uart_info_ptr->TX_CHARS++;
} /* Endwhile */
} /* Endwhile */
} /* Endbody */
