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add serial DMA transmit function(beta)

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2382 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
dzzxzz@gmail.com
2012-11-01 07:17:54 +00:00
parent 6773015c4a
commit db58e3350b
4 changed files with 281 additions and 196 deletions
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components/drivers/include/drivers/serial.h
+16 -6
View File
@@ -57,18 +57,21 @@
#define RT_SERIAL_ERR_OVERRUN 0x01
#define RT_SERIAL_ERR_FRAMING 0x02
#define RT_SERIAL_ERR_PARITY 0x03
#define RT_SERIAL_TX_DATAQUEUE_SIZE 40
#define RT_SERIAL_TX_DATAQUEUE_LWM 30
/* Default config for serial_configure structure */
#define RT_SERIAL_CONFIG_DEFAULT \
{ \
BAUD_RATE_115200, /* 115200 bits/s */ \
DATA_BITS_8, /* 8 databits */ \
STOP_BITS_1, /* 1 stopbit */ \
PARITY_NONE, /* No parity */ \
BIT_ORDER_LSB, /* LSB first sent */ \
NRZ_NORMAL, /* Normal mode */ \
0 \
}
STOP_BITS_1, /* 1 stopbit */ \
PARITY_NONE, /* No parity */ \
BIT_ORDER_LSB, /* LSB first sent */ \
NRZ_NORMAL, /* Normal mode */ \
0 \
}
struct serial_ringbuffer
{
@@ -98,6 +101,10 @@ struct rt_serial_device
struct serial_ringbuffer *int_rx;
/* tx structure */
struct serial_ringbuffer *int_tx;
struct rt_data_queue tx_dq; /* tx dataqueue */
volatile rt_bool_t dma_flag; /* dma transfer flag */
};
typedef struct rt_serial_device rt_serial_t;
@@ -111,9 +118,12 @@ struct rt_uart_ops
int (*putc)(struct rt_serial_device *serial, char c);
int (*getc)(struct rt_serial_device *serial);
rt_size_t (*dma_transmit)(struct rt_serial_device *serial, const char *buf, rt_size_t size);
};
void rt_hw_serial_isr(struct rt_serial_device *serial);
void rt_hw_serial_dma_tx_isr(struct rt_serial_device *serial);
rt_err_t rt_hw_serial_register(struct rt_serial_device *serial,
const char *name,
rt_uint32_t flag,
components/drivers/include/rtdevice.h
+3 -3
View File
@@ -125,15 +125,15 @@ rt_err_t rt_data_queue_init(struct rt_data_queue *queue,
rt_uint16_t lwm,
void (*evt_notify)(struct rt_data_queue *queue, rt_uint32_t event));
rt_err_t rt_data_queue_push(struct rt_data_queue *queue,
void *data_ptr,
const void *data_ptr,
rt_size_t data_size,
rt_int32_t timeout);
rt_err_t rt_data_queue_pop(struct rt_data_queue *queue,
void **data_ptr,
const void **data_ptr,
rt_size_t *size,
rt_int32_t timeout);
rt_err_t rt_data_queue_peak(struct rt_data_queue *queue,
void **data_ptr,
const void **data_ptr,
rt_size_t *size);
void rt_data_queue_reset(struct rt_data_queue *queue);