57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
#ifndef __RT_SERIAL_H__
|
|
#define __RT_SERIAL_H__
|
|
|
|
#include <rthw.h>
|
|
#include <rtthread.h>
|
|
|
|
|
|
#define USTAT_RCV_READY 0x01 /* receive data ready */
|
|
#define USTAT_TXB_EMPTY 0x20 /* tx buffer empty */
|
|
#define BPS 115200 /* serial baudrate */
|
|
|
|
#define UART_RX_BUFFER_SIZE 64
|
|
#define UART_TX_BUFFER_SIZE 64
|
|
|
|
struct serial_int_rx
|
|
{
|
|
rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
|
|
rt_uint32_t read_index, save_index;
|
|
};
|
|
|
|
struct serial_int_tx
|
|
{
|
|
rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
|
|
rt_uint32_t write_index, save_index;
|
|
};
|
|
|
|
/* serial port registers */
|
|
typedef struct uartport
|
|
{
|
|
rt_uint32_t dlbl_rxfifo_txfifo;
|
|
rt_uint32_t dlbh_ier;
|
|
rt_uint32_t iir_fcr;
|
|
rt_uint32_t lcr;
|
|
rt_uint32_t mcr;
|
|
rt_uint32_t lsr;
|
|
rt_uint32_t msr;
|
|
}uartport;
|
|
|
|
struct serial_device
|
|
{
|
|
/* uart hardware registers */
|
|
uartport* uart_device;
|
|
|
|
/* rx structure */
|
|
struct serial_int_rx* int_rx;
|
|
|
|
/* tx structure */
|
|
struct serial_int_tx* int_tx;
|
|
};
|
|
|
|
rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
|
|
|
|
void rt_hw_serial_isr(rt_device_t device);
|
|
|
|
#endif
|
|
|