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[bsp]add gdb support for BBB

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陈豪
2014-08-12 18:27:22 +08:00
parent fd6ef4b235
commit a966dd3c38
4 changed files with 54 additions and 4 deletions
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bsp/beaglebone/drivers/serial.c
+39 -3
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@@ -338,6 +338,42 @@ static void config_pinmux(void)
#endif
}
static int am33xx_putc_poll(struct rt_serial_device *serial, char c)
{
struct am33xx_uart* uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct am33xx_uart *)serial->parent.user_data;
while (!(UART_LSR_REG(uart->base) & 0x20));
UART_THR_REG(uart->base) = c;
return 1;
}
static int am33xx_getc_poll(struct rt_serial_device *serial)
{
int ch;
struct am33xx_uart* uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct am33xx_uart *)serial->parent.user_data;
ch = -1;
while(!(UART_LSR_REG(uart->base) & 0x01));
ch = UART_RHR_REG(uart->base) & 0xff;
return ch;
}
static const struct rt_uart_ops am33xx_gdb_ops =
{
am33xx_configure,
am33xx_control,
am33xx_putc_poll,
am33xx_getc_poll,
};
int rt_hw_serial_init(void)
{
struct serial_configure config;
@@ -447,17 +483,17 @@ int rt_hw_serial_init(void)
config.invert = NRZ_NORMAL;
config.bufsz = RT_SERIAL_RB_BUFSZ;
serial4.ops = &am33xx_uart_ops;
serial4.ops = &am33xx_gdb_ops;
serial4.config = config;
/* enable RX interrupt */
UART_IER_REG(uart4.base) = 0x01;
UART_IER_REG(uart4.base) = 0x00;
/* install ISR */
rt_hw_interrupt_install(uart4.irq, am33xx_uart_isr, &serial4, "uart4");
rt_hw_interrupt_control(uart4.irq, 0, 0);
rt_hw_interrupt_mask(uart4.irq);
/* register UART4 device */
rt_hw_serial_register(&serial4, "uart4",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STREAM,
&uart4);
#endif