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notification function: rt_err_t (*tx_complete)(rt_device_t dev, void 

*buffer) with buffer pointer
This commit is contained in:
joyhope 2013-09-24 20:57:00 +08:00
parent 0b844aa82d
commit 281e55e973
1 changed files with 6 additions and 10 deletions
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16
components/drivers/serial/serial.c
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@ -292,8 +292,6 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
} }
else if (dev->flag & RT_DEVICE_FLAG_DMA_TX) else if (dev->flag & RT_DEVICE_FLAG_DMA_TX)
{ {
const void *data_ptr = RT_NULL;
rt_size_t data_size = 0;
rt_base_t level; rt_base_t level;
rt_err_t result; rt_err_t result;
@ -307,11 +305,7 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
{ {
serial->dma_flag = RT_TRUE; serial->dma_flag = RT_TRUE;
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
serial->ops->dma_transmit(serial, buffer, size);
if (RT_EOK == rt_data_queue_pop(&(serial->tx_dq), &data_ptr, &data_size, 0))
{
serial->ops->dma_transmit(serial, data_ptr, data_size);
}
} }
else else
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
@ -449,11 +443,13 @@ void rt_hw_serial_dma_tx_isr(struct rt_serial_device *serial)
{ {
const void *data_ptr; const void *data_ptr;
rt_size_t data_size; rt_size_t data_size;
const void *last_data_ptr;
if (RT_EOK == rt_data_queue_pop(&(serial->tx_dq), &data_ptr, &data_size, 0)) rt_data_queue_pop(&(serial->tx_dq), &last_data_ptr, &data_size, 0);
if (RT_EOK == rt_data_queue_peak(&(serial->tx_dq), &data_ptr, &data_size))
{ {
/* transmit next data node */ /* transmit next data node */
serial->ops->dma_transmit(serial, data_ptr, data_size); serial->ops->dma_transmit(serial, data_ptr, data_size);
} }
else else
{ {
@ -463,6 +459,6 @@ void rt_hw_serial_dma_tx_isr(struct rt_serial_device *serial)
/* invoke callback */ /* invoke callback */
if (serial->parent.tx_complete != RT_NULL) if (serial->parent.tx_complete != RT_NULL)
{ {
serial->parent.tx_complete(&serial->parent, RT_NULL); serial->parent.tx_complete(&serial->parent, (void*)last_data_ptr);
} }
} }