现在的版本STM32不能使用DMA方式的串口了？

发布于 2015-09-23 18:50:30 浏览：3570 订阅该版

8 个回答

ralfak 2015-09-25

这家伙很懒，什么也没写！

vinx 2015-09-25

这家伙很懒，什么也没写！

vinx 2015-09-25

这家伙很懒，什么也没写！

bernard 2015-09-25

这家伙很懒，什么也没写！

vinx 2015-10-10

这家伙很懒，什么也没写！

在哪个版本里有？我在2.0.1发布版里没有看到dma的代码
初始化里面都没有注册DMA方式

```
void rt_hw_usart_init(void)
{
    struct stm32_uart* uart;
    struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;

RCC_Configuration();
    GPIO_Configuration();

#if defined(RT_USING_UART1)
    uart = &uart1;
    config.baud_rate = BAUD_RATE_115200;

serial1.ops    = &stm32_uart_ops;
    serial1.config = config;

NVIC_Configuration(&uart1);

/* register UART1 device */
    rt_hw_serial_register(&serial1, "uart1",
                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX ,
                          uart);
#endif /* RT_USING_UART1 */

#if defined(RT_USING_UART2)
    uart = &uart2;

config.baud_rate = BAUD_RATE_115200;
    serial2.ops    = &stm32_uart_ops;
    serial2.config = config;

NVIC_Configuration(&uart2);

/* register UART1 device */
    rt_hw_serial_register(&serial2, "uart2",
                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
                          uart);
#endif /* RT_USING_UART2 */

#if defined(RT_USING_UART3)
    uart = &uart3;

config.baud_rate = BAUD_RATE_115200;

serial3.ops    = &stm32_uart_ops;
    serial3.config = config;

NVIC_Configuration(&uart3);

/* register UART1 device */
    rt_hw_serial_register(&serial3, "uart3",
                          RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
                          uart);
#endif /* RT_USING_UART3 */
```