[bsp][tms320f28379d] Fix c28x_getc() problem
@@ -147,8 +147,25 @@ static int c28x_putc(struct rt_serial_device *serial, char c)
static int c28x_getc(struct rt_serial_device *serial)
{
char ch;
- SCI_read(0, &ch, 1);
+ if(SCI_read(0, &ch, 1))
return ch;
+ else
+ return -1;
+}
+
+/**
+ * Uart common interrupt process. This need add to uart ISR.
+ *
+ * @param serial serial device
+ */
+static void uart_isr(struct rt_serial_device *serial) {
+ struct c28x_uart *uart = (struct c28x_uart *) serial->parent.user_data;
+
+ RT_ASSERT(uart != RT_NULL);
+
+ rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
+ SciaRegs.SCIFFRX.bit.RXFFINTCLR = 1; // Clear Interrupt flag
+ PieCtrlRegs.PIEACK.all |= 0x100; // Issue PIE ack
}
static const struct rt_uart_ops c28x_uart_ops =
@@ -159,6 +176,20 @@ static const struct rt_uart_ops c28x_uart_ops =
.getc = c28x_getc,
};
+//
+// sciaRxFifoIsr - SCIA Receive FIFO ISR
+//
+interrupt void sciaRxFifoIsr(void)
+{
+ /* enter interrupt */
+ rt_interrupt_enter();
+
+ uart_isr(&uart_obj[0].serial);
+
+ /* leave interrupt */
+ rt_interrupt_leave();
+}
+
int rt_hw_sci_init(void)
{
EALLOW;
@@ -182,8 +213,20 @@ int rt_hw_sci_init(void)
CpuSysRegs.PCLKCR7.bit.SCI_B = 1;
CpuSysRegs.PCLKCR7.bit.SCI_C = 1;
+ PieVectTable.SCIA_RX_INT = &sciaRxFifoIsr;
+ //PieVectTable.SCIA_TX_INT = &sciaTxFifoIsr;
+
EDIS;
+ //
+ // Enable interrupts required for this example
+ //
+ PieCtrlRegs.PIECTRL.bit.ENPIE = 1; // Enable the PIE block
+ PieCtrlRegs.PIEIER9.bit.INTx1 = 1; // PIE Group 9, INT1
+ //PieCtrlRegs.PIEIER9.bit.INTx2 = 1; // PIE Group 9, INT2
+ IER = 0x100; // Enable CPU INT
+ EINT;
+
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
rt_err_t result = 0;
@@ -202,7 +245,6 @@ int rt_hw_sci_init(void)
uart_obj[2].name = "scic";
uart_obj[2].sci_regs = &ScicRegs;
-
/* register UART device */
result = rt_hw_serial_register(&uart_obj[0].serial, uart_obj[0].name,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
