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提交 be9aa36a 编写于 作者: B Bernard Xiong
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Merge pull request #335 from heyuanjie87/ForPullRequest 

[Serial] BUG Fix: data be send twice in mode that other than polling
上级 7bd85ac5 8a44c7db
隐藏空白更改
内联 并排
Showing with 413 addition and 411 deletion
components/drivers/serial/serial.c
浏览文件 @ be9aa36a
......@@ -37,48 +37,48 @@
*/
rt_inline int _serial_poll_rx(struct rt_serial_device *serial, rt_uint8_t *data, int length)
{
int ch;
int size;
RT_ASSERT(serial != RT_NULL);
size = length;
while (length)
{
ch = serial->ops->getc(serial);
*data = ch;
data ++; length --;
if (ch == '\n') break;
}
return size - length;
int ch;
int size;
RT_ASSERT(serial != RT_NULL);
size = length;
while (length)
{
ch = serial->ops->getc(serial);
*data = ch;
data ++; length --;
if (ch == '\n') break;
}
return size - length;
}
rt_inline int _serial_poll_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
{
int size;
RT_ASSERT(serial != RT_NULL);
size = length;
while (length)
{
/*
* to be polite with serial console add a line feed
* to the carriage return character
*/
if (*data == '\n' && (serial->parent.flag & RT_DEVICE_FLAG_STREAM))
{
serial->ops->putc(serial, '\r');
}
serial->ops->putc(serial, *data);
++ data;
-- length;
}
return size - length;
int size;
RT_ASSERT(serial != RT_NULL);
size = length;
while (length)
{
/*
* to be polite with serial console add a line feed
* to the carriage return character
*/
if (*data == '\n' && (serial->parent.flag & RT_DEVICE_FLAG_STREAM))
{
serial->ops->putc(serial, '\r');
}
serial->ops->putc(serial, *data);
++ data;
-- length;
}
return size - length;
}
/*
......@@ -86,69 +86,69 @@ rt_inline int _serial_poll_tx(struct rt_serial_device *serial, const rt_uint8_t
*/
rt_inline int _serial_int_rx(struct rt_serial_device *serial, rt_uint8_t *data, int length)
{
int size;
struct rt_serial_rx_fifo* rx_fifo;
RT_ASSERT(serial != RT_NULL);
size = length;
rx_fifo = (struct rt_serial_rx_fifo*) serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
/* read from software FIFO */
while (length)
{
int ch;
rt_base_t level;
/* disable interrupt */
level = rt_hw_interrupt_disable();
if (rx_fifo->get_index != rx_fifo->put_index)
{
ch = rx_fifo->buffer[rx_fifo->get_index];
rx_fifo->get_index += 1;
if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
}
else
{
/* no data, enable interrupt and break out */
rt_hw_interrupt_enable(level);
break;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
*data = ch & 0xff;
data ++; length --;
}
return size - length;
int size;
struct rt_serial_rx_fifo* rx_fifo;
RT_ASSERT(serial != RT_NULL);
size = length;
rx_fifo = (struct rt_serial_rx_fifo*) serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
/* read from software FIFO */
while (length)
{
int ch;
rt_base_t level;
/* disable interrupt */
level = rt_hw_interrupt_disable();
if (rx_fifo->get_index != rx_fifo->put_index)
{
ch = rx_fifo->buffer[rx_fifo->get_index];
rx_fifo->get_index += 1;
if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
}
else
{
/* no data, enable interrupt and break out */
rt_hw_interrupt_enable(level);
break;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
*data = ch & 0xff;
data ++; length --;
}
return size - length;
}
rt_inline int _serial_int_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
{
int size;
struct rt_serial_tx_fifo *tx;
RT_ASSERT(serial != RT_NULL);
size = length;
tx = (struct rt_serial_tx_fifo*) serial->serial_tx;
RT_ASSERT(tx != RT_NULL);
while (length)
{
if (serial->ops->putc(serial, *(char*)data) == -1)
{
rt_completion_wait(&(tx->completion), RT_WAITING_FOREVER);
continue;
}
data ++; length --;
}
return size - length;
int size;
struct rt_serial_tx_fifo *tx;
RT_ASSERT(serial != RT_NULL);
size = length;
tx = (struct rt_serial_tx_fifo*) serial->serial_tx;
RT_ASSERT(tx != RT_NULL);
while (length)
{
if (serial->ops->putc(serial, *(char*)data) == -1)
{
rt_completion_wait(&(tx->completion), RT_WAITING_FOREVER);
continue;
}
data ++; length --;
}
return size - length;
}
/*
......@@ -156,61 +156,61 @@ rt_inline int _serial_int_tx(struct rt_serial_device *serial, const rt_uint8_t *
*/
rt_inline int _serial_dma_rx(struct rt_serial_device *serial, rt_uint8_t *data, int length)
{
rt_base_t level;
int result = RT_EOK;
struct rt_serial_rx_dma *rx_dma;
RT_ASSERT((serial != RT_NULL) && (data != RT_NULL));
rx_dma = (struct rt_serial_rx_dma*)serial->serial_rx;
RT_ASSERT(rx_dma != RT_NULL);
level = rt_hw_interrupt_disable();
if (rx_dma->activated != RT_TRUE)
{
rx_dma->activated = RT_TRUE;
serial->ops->dma_transmit(serial, data, length, RT_SERIAL_DMA_RX);
}
else result = -RT_EBUSY;
rt_hw_interrupt_enable(level);
if (result == RT_EOK) return length;
rt_set_errno(result);
return 0;
rt_base_t level;
int result = RT_EOK;
struct rt_serial_rx_dma *rx_dma;
RT_ASSERT((serial != RT_NULL) && (data != RT_NULL));
rx_dma = (struct rt_serial_rx_dma*)serial->serial_rx;
RT_ASSERT(rx_dma != RT_NULL);
level = rt_hw_interrupt_disable();
if (rx_dma->activated != RT_TRUE)
{
rx_dma->activated = RT_TRUE;
serial->ops->dma_transmit(serial, data, length, RT_SERIAL_DMA_RX);
}
else result = -RT_EBUSY;
rt_hw_interrupt_enable(level);
if (result == RT_EOK) return length;
rt_set_errno(result);
return 0;
}
rt_inline int _serial_dma_tx(struct rt_serial_device *serial, const rt_uint8_t *data, int length)
{
rt_base_t level;
rt_err_t result;
struct rt_serial_tx_dma *tx_dma;
tx_dma = (struct rt_serial_tx_dma*)(serial->serial_tx);
result = rt_data_queue_push(&(tx_dma->data_queue), data, length, RT_WAITING_FOREVER);
if (result == RT_EOK)
{
level = rt_hw_interrupt_disable();
if (tx_dma->activated != RT_TRUE)
{
tx_dma->activated = RT_TRUE;
rt_hw_interrupt_enable(level);
/* make a DMA transfer */
serial->ops->dma_transmit(serial, data, length, RT_SERIAL_DMA_TX);
}
else
{
rt_hw_interrupt_enable(level);
}
return length;
}
else
{
rt_set_errno(result);
return 0;
}
rt_base_t level;
rt_err_t result;
struct rt_serial_tx_dma *tx_dma;
tx_dma = (struct rt_serial_tx_dma*)(serial->serial_tx);
result = rt_data_queue_push(&(tx_dma->data_queue), data, length, RT_WAITING_FOREVER);
if (result == RT_EOK)
{
level = rt_hw_interrupt_disable();
if (tx_dma->activated != RT_TRUE)
{
tx_dma->activated = RT_TRUE;
rt_hw_interrupt_enable(level);
/* make a DMA transfer */
serial->ops->dma_transmit(serial, data, length, RT_SERIAL_DMA_TX);
}
else
{
rt_hw_interrupt_enable(level);
}
return length;
}
else
{
rt_set_errno(result);
return 0;
}
}
/* RT-Thread Device Interface */
......@@ -225,15 +225,15 @@ static rt_err_t rt_serial_init(struct rt_device *dev)
RT_ASSERT(dev != RT_NULL);
serial = (struct rt_serial_device *)dev;
/* initialize rx/tx */
serial->serial_rx = RT_NULL;
serial->serial_tx = RT_NULL;
/* initialize rx/tx */
serial->serial_rx = RT_NULL;
serial->serial_tx = RT_NULL;
/* apply configuration */
if (serial->ops->configure)
result = serial->ops->configure(serial, &serial->config);
/* apply configuration */
if (serial->ops->configure)
result = serial->ops->configure(serial, &serial->config);
return result;
return result;
}
static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
......@@ -243,89 +243,89 @@ static rt_err_t rt_serial_open(struct rt_device *dev, rt_uint16_t oflag)
RT_ASSERT(dev != RT_NULL);
serial = (struct rt_serial_device *)dev;
/* check device flag with the open flag */
if ((oflag & RT_DEVICE_FLAG_DMA_RX) && !(dev->flag & RT_DEVICE_FLAG_DMA_RX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_DMA_TX) && !(dev->flag & RT_DEVICE_FLAG_DMA_TX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_INT_RX) && !(dev->flag & RT_DEVICE_FLAG_INT_RX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_INT_TX) && !(dev->flag & RT_DEVICE_FLAG_INT_TX))
return -RT_EIO;
/* get open flags */
dev->open_flag = oflag & 0xff;
/* initialize the Rx/Tx structure according to open flag */
if (serial->serial_rx == RT_NULL)
{
if (oflag & RT_DEVICE_FLAG_DMA_RX)
{
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*) rt_malloc (sizeof(struct rt_serial_rx_dma));
RT_ASSERT(rx_dma != RT_NULL);
rx_dma->activated = RT_FALSE;
serial->serial_rx = rx_dma;
dev->open_flag |= RT_DEVICE_FLAG_DMA_RX;
}
else if (oflag & RT_DEVICE_FLAG_INT_RX)
{
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*) rt_malloc (sizeof(struct rt_serial_rx_fifo) +
serial->config.bufsz);
RT_ASSERT(rx_fifo != RT_NULL);
rx_fifo->buffer = (rt_uint8_t*) (rx_fifo + 1);
rt_memset(rx_fifo->buffer, 0, RT_SERIAL_RB_BUFSZ);
rx_fifo->put_index = 0;
rx_fifo->get_index = 0;
serial->serial_rx = rx_fifo;
dev->open_flag |= RT_DEVICE_FLAG_INT_RX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_RX);
}
else
{
serial->serial_rx = RT_NULL;
}
}
if (serial->serial_tx == RT_NULL)
{
if (oflag & RT_DEVICE_FLAG_DMA_TX)
{
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*) rt_malloc (sizeof(struct rt_serial_tx_dma));
RT_ASSERT(tx_dma != RT_NULL);
rt_data_queue_init(&(tx_dma->data_queue), 8, 4, RT_NULL);
serial->serial_tx = tx_dma;
dev->open_flag |= RT_DEVICE_FLAG_DMA_TX;
}
else if (oflag & RT_DEVICE_FLAG_INT_TX)
{
struct rt_serial_tx_fifo *tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*) rt_malloc(sizeof(struct rt_serial_tx_fifo));
RT_ASSERT(tx_fifo != RT_NULL);
rt_completion_init(&(tx_fifo->completion));
serial->serial_tx = tx_fifo;
dev->open_flag |= RT_DEVICE_FLAG_INT_TX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_TX);
}
else
{
serial->serial_tx = RT_NULL;
}
}
/* check device flag with the open flag */
if ((oflag & RT_DEVICE_FLAG_DMA_RX) && !(dev->flag & RT_DEVICE_FLAG_DMA_RX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_DMA_TX) && !(dev->flag & RT_DEVICE_FLAG_DMA_TX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_INT_RX) && !(dev->flag & RT_DEVICE_FLAG_INT_RX))
return -RT_EIO;
if ((oflag & RT_DEVICE_FLAG_INT_TX) && !(dev->flag & RT_DEVICE_FLAG_INT_TX))
return -RT_EIO;
/* get open flags */
dev->open_flag = oflag & 0xff;
/* initialize the Rx/Tx structure according to open flag */
if (serial->serial_rx == RT_NULL)
{
if (oflag & RT_DEVICE_FLAG_DMA_RX)
{
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*) rt_malloc (sizeof(struct rt_serial_rx_dma));
RT_ASSERT(rx_dma != RT_NULL);
rx_dma->activated = RT_FALSE;
serial->serial_rx = rx_dma;
dev->open_flag |= RT_DEVICE_FLAG_DMA_RX;
}
else if (oflag & RT_DEVICE_FLAG_INT_RX)
{
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*) rt_malloc (sizeof(struct rt_serial_rx_fifo) +
serial->config.bufsz);
RT_ASSERT(rx_fifo != RT_NULL);
rx_fifo->buffer = (rt_uint8_t*) (rx_fifo + 1);
rt_memset(rx_fifo->buffer, 0, RT_SERIAL_RB_BUFSZ);
rx_fifo->put_index = 0;
rx_fifo->get_index = 0;
serial->serial_rx = rx_fifo;
dev->open_flag |= RT_DEVICE_FLAG_INT_RX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_RX);
}
else
{
serial->serial_rx = RT_NULL;
}
}
if (serial->serial_tx == RT_NULL)
{
if (oflag & RT_DEVICE_FLAG_DMA_TX)
{
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*) rt_malloc (sizeof(struct rt_serial_tx_dma));
RT_ASSERT(tx_dma != RT_NULL);
rt_data_queue_init(&(tx_dma->data_queue), 8, 4, RT_NULL);
serial->serial_tx = tx_dma;
dev->open_flag |= RT_DEVICE_FLAG_DMA_TX;
}
else if (oflag & RT_DEVICE_FLAG_INT_TX)
{
struct rt_serial_tx_fifo *tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*) rt_malloc(sizeof(struct rt_serial_tx_fifo));
RT_ASSERT(tx_fifo != RT_NULL);
rt_completion_init(&(tx_fifo->completion));
serial->serial_tx = tx_fifo;
dev->open_flag |= RT_DEVICE_FLAG_INT_TX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_SET_INT, (void *)RT_DEVICE_FLAG_INT_TX);
}
else
{
serial->serial_tx = RT_NULL;
}
}
return RT_EOK;
}
......@@ -337,58 +337,58 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
RT_ASSERT(dev != RT_NULL);
serial = (struct rt_serial_device *)dev;
/* this device has more reference count */
if (dev->ref_count > 1) return RT_EOK;
if (dev->open_flag & RT_DEVICE_FLAG_INT_RX)
{
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
rt_free(rx_fifo);
serial->serial_rx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_INT_RX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_TX);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
{
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*)serial->serial_tx;
RT_ASSERT(rx_dma != RT_NULL);
rt_free(rx_dma);
serial->serial_rx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_RX;
}
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
{
struct rt_serial_tx_fifo* tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*)serial->serial_rx;
RT_ASSERT(tx_fifo != RT_NULL);
rt_free(tx_fifo);
serial->serial_tx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_INT_TX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_TX);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
{
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*)serial->serial_tx;
RT_ASSERT(tx_dma != RT_NULL);
rt_free(tx_dma);
serial->serial_tx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_TX;
}
/* this device has more reference count */
if (dev->ref_count > 1) return RT_EOK;
if (dev->open_flag & RT_DEVICE_FLAG_INT_RX)
{
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
rt_free(rx_fifo);
serial->serial_rx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_INT_RX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_TX);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
{
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*)serial->serial_tx;
RT_ASSERT(rx_dma != RT_NULL);
rt_free(rx_dma);
serial->serial_rx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_RX;
}
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
{
struct rt_serial_tx_fifo* tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*)serial->serial_rx;
RT_ASSERT(tx_fifo != RT_NULL);
rt_free(tx_fifo);
serial->serial_tx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_INT_TX;
/* configure low level device */
serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_TX);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
{
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*)serial->serial_tx;
RT_ASSERT(tx_dma != RT_NULL);
rt_free(tx_dma);
serial->serial_tx = RT_NULL;
dev->open_flag &= ~RT_DEVICE_FLAG_DMA_TX;
}
return RT_EOK;
}
......@@ -405,16 +405,16 @@ static rt_size_t rt_serial_read(struct rt_device *dev,
serial = (struct rt_serial_device *)dev;
if (dev->open_flag & RT_DEVICE_FLAG_INT_RX)
{
return _serial_int_rx(serial, buffer, size);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
{
return _serial_dma_rx(serial, buffer, size);
}
if (dev->open_flag & RT_DEVICE_FLAG_INT_RX)
{
return _serial_int_rx(serial, buffer, size);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
{
return _serial_dma_rx(serial, buffer, size);
}
return _serial_poll_rx(serial, buffer, size);
return _serial_poll_rx(serial, buffer, size);
}
static rt_size_t rt_serial_write(struct rt_device *dev,
......@@ -429,16 +429,18 @@ static rt_size_t rt_serial_write(struct rt_device *dev,
serial = (struct rt_serial_device *)dev;
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
{
_serial_int_tx(serial, buffer, size);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
{
_serial_dma_tx(serial, buffer, size);
}
return _serial_poll_tx(serial, buffer, size);
if (dev->open_flag & RT_DEVICE_FLAG_INT_TX)
{
return _serial_int_tx(serial, buffer, size);
}
else if (dev->open_flag & RT_DEVICE_FLAG_DMA_TX)
{
return _serial_dma_tx(serial, buffer, size);
}
else
{
return _serial_poll_tx(serial, buffer, size);
}
}
static rt_err_t rt_serial_control(struct rt_device *dev,
......@@ -508,106 +510,106 @@ rt_err_t rt_hw_serial_register(struct rt_serial_device *serial,
/* ISR for serial interrupt */
void rt_hw_serial_isr(struct rt_serial_device *serial, int event)
{
switch (event & 0xff)
{
case RT_SERIAL_EVENT_RX_IND:
{
int ch = -1;
rt_base_t level;
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
/* interrupt mode receive */
RT_ASSERT(serial->parent.open_flag & RT_DEVICE_FLAG_INT_RX);
while (1)
{
ch = serial->ops->getc(serial);
if (ch == -1) break;
/* disable interrupt */
level = rt_hw_interrupt_disable();
rx_fifo->buffer[rx_fifo->put_index] = ch;
rx_fifo->put_index += 1;
if (rx_fifo->put_index >= serial->config.bufsz) rx_fifo->put_index = 0;
/* if the next position is read index, discard this 'read char' */
if (rx_fifo->put_index == rx_fifo->get_index)
{
rx_fifo->get_index += 1;
if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
}
/* invoke callback */
if (serial->parent.rx_indicate != RT_NULL)
{
rt_size_t rx_length;
/* get rx length */
level = rt_hw_interrupt_disable();
rx_length = (rx_fifo->put_index >= rx_fifo->get_index)? (rx_fifo->put_index - rx_fifo->get_index):
(serial->config.bufsz - (rx_fifo->get_index - rx_fifo->put_index));
rt_hw_interrupt_enable(level);
serial->parent.rx_indicate(&serial->parent, rx_length);
}
break;
}
case RT_SERIAL_EVENT_TX_DONE:
{
struct rt_serial_tx_fifo* tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*)serial->serial_tx;
rt_completion_done(&(tx_fifo->completion));
break;
}
case RT_SERIAL_EVENT_TX_DMADONE:
{
const void *data_ptr;
rt_size_t data_size;
const void *last_data_ptr;
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*) serial->serial_tx;
rt_data_queue_pop(&(tx_dma->data_queue), &last_data_ptr, &data_size, 0);
if (rt_data_queue_peak(&(tx_dma->data_queue), &data_ptr, &data_size) == RT_EOK)
{
/* transmit next data node */
tx_dma->activated = RT_TRUE;
serial->ops->dma_transmit(serial, data_ptr, data_size, RT_SERIAL_DMA_TX);
}
else
{
tx_dma->activated = RT_FALSE;
}
/* invoke callback */
if (serial->parent.tx_complete != RT_NULL)
{
serial->parent.tx_complete(&serial->parent, (void*)last_data_ptr);
}
break;
}
case RT_SERIAL_EVENT_RX_DMADONE:
{
int length;
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*)serial->serial_rx;
/* get DMA rx length */
length = (event & (~0xff)) >> 8;
serial->parent.rx_indicate(&(serial->parent), length);
rx_dma->activated = RT_FALSE;
break;
}
}
switch (event & 0xff)
{
case RT_SERIAL_EVENT_RX_IND:
{
int ch = -1;
rt_base_t level;
struct rt_serial_rx_fifo* rx_fifo;
rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx;
RT_ASSERT(rx_fifo != RT_NULL);
/* interrupt mode receive */
RT_ASSERT(serial->parent.open_flag & RT_DEVICE_FLAG_INT_RX);
while (1)
{
ch = serial->ops->getc(serial);
if (ch == -1) break;
/* disable interrupt */
level = rt_hw_interrupt_disable();
rx_fifo->buffer[rx_fifo->put_index] = ch;
rx_fifo->put_index += 1;
if (rx_fifo->put_index >= serial->config.bufsz) rx_fifo->put_index = 0;
/* if the next position is read index, discard this 'read char' */
if (rx_fifo->put_index == rx_fifo->get_index)
{
rx_fifo->get_index += 1;
if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0;
}
/* enable interrupt */
rt_hw_interrupt_enable(level);
}
/* invoke callback */
if (serial->parent.rx_indicate != RT_NULL)
{
rt_size_t rx_length;
/* get rx length */
level = rt_hw_interrupt_disable();
rx_length = (rx_fifo->put_index >= rx_fifo->get_index)? (rx_fifo->put_index - rx_fifo->get_index):
(serial->config.bufsz - (rx_fifo->get_index - rx_fifo->put_index));
rt_hw_interrupt_enable(level);
serial->parent.rx_indicate(&serial->parent, rx_length);
}
break;
}
case RT_SERIAL_EVENT_TX_DONE:
{
struct rt_serial_tx_fifo* tx_fifo;
tx_fifo = (struct rt_serial_tx_fifo*)serial->serial_tx;
rt_completion_done(&(tx_fifo->completion));
break;
}
case RT_SERIAL_EVENT_TX_DMADONE:
{
const void *data_ptr;
rt_size_t data_size;
const void *last_data_ptr;
struct rt_serial_tx_dma* tx_dma;
tx_dma = (struct rt_serial_tx_dma*) serial->serial_tx;
rt_data_queue_pop(&(tx_dma->data_queue), &last_data_ptr, &data_size, 0);
if (rt_data_queue_peak(&(tx_dma->data_queue), &data_ptr, &data_size) == RT_EOK)
{
/* transmit next data node */
tx_dma->activated = RT_TRUE;
serial->ops->dma_transmit(serial, data_ptr, data_size, RT_SERIAL_DMA_TX);
}
else
{
tx_dma->activated = RT_FALSE;
}
/* invoke callback */
if (serial->parent.tx_complete != RT_NULL)
{
serial->parent.tx_complete(&serial->parent, (void*)last_data_ptr);
}
break;
}
case RT_SERIAL_EVENT_RX_DMADONE:
{
int length;
struct rt_serial_rx_dma* rx_dma;
rx_dma = (struct rt_serial_rx_dma*)serial->serial_rx;
/* get DMA rx length */
length = (event & (~0xff)) >> 8;
serial->parent.rx_indicate(&(serial->parent), length);
rx_dma->activated = RT_FALSE;
break;
}
}
}
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