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[bsp][tms320f28379d] Fix c28x_getc() problem

This commit is contained in:
xuzhuoyi 2019-04-07 20:03:16 +08:00
parent 27d27cdb4b
commit 82b7bcb473
1 changed files with 45 additions and 3 deletions
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48
bsp/tms320f28379d/drivers/drv_sci.c
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@ -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,