diff options
| -rw-r--r-- | bsp/tms320f28379d/drivers/drv_sci.c | 48 |
1 files changed, 45 insertions, 3 deletions
diff --git a/bsp/tms320f28379d/drivers/drv_sci.c b/bsp/tms320f28379d/drivers/drv_sci.c index ae0390d1bf..e345097f06 100644 --- a/bsp/tms320f28379d/drivers/drv_sci.c +++ b/bsp/tms320f28379d/drivers/drv_sci.c @@ -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); - return ch; + 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, |