44 lines
952 B
C
44 lines
952 B
C
|
#ifndef _UART_H_
|
||
|
|
#define _UART_H_
|
||
|
|
|
||
|
|
#include "types.h"
|
||
|
|
|
||
|
|
#define UART_A 0
|
||
|
|
#define UART_B 1
|
||
|
|
#define UART_C 2
|
||
|
|
//TODO: define clock inits for those.
|
||
|
|
/*#define UART_D 3
|
||
|
|
#define UART_E 4*/
|
||
|
|
|
||
|
|
#define BAUD_115200 115200
|
||
|
|
|
||
|
|
#define UART_TX_IDLE 0x00000001
|
||
|
|
#define UART_RX_IDLE 0x00000002
|
||
|
|
#define UART_TX_FIFO_FULL 0x100
|
||
|
|
#define UART_RX_FIFO_EMPTY 0x200
|
||
|
|
|
||
|
|
typedef struct _uart_t
|
||
|
|
{
|
||
|
|
/* 0x00 */ u32 UART_THR_DLAB;
|
||
|
|
/* 0x04 */ u32 UART_IER_DLAB;
|
||
|
|
/* 0x08 */ u32 UART_IIR_FCR;
|
||
|
|
/* 0x0C */ u32 UART_LCR;
|
||
|
|
/* 0x10 */ u32 UART_MCR;
|
||
|
|
/* 0x14 */ u32 UART_LSR;
|
||
|
|
/* 0x18 */ u32 UART_MSR;
|
||
|
|
/* 0x1C */ u32 UART_SPR;
|
||
|
|
/* 0x20 */ u32 UART_IRDA_CSR;
|
||
|
|
/* 0x24 */ u32 UART_RX_FIFO_CFG;
|
||
|
|
/* 0x28 */ u32 UART_MIE;
|
||
|
|
/* 0x2C */ u32 UART_VENDOR_STATUS;
|
||
|
|
/* 0x30 */ u8 _pad_30[0x0C];
|
||
|
|
/* 0x3C */ u32 UART_ASR;
|
||
|
|
} uart_t;
|
||
|
|
|
||
|
|
void uart_init(u32 idx, u32 baud);
|
||
|
|
void uart_wait_idle(u32 idx, u32 which);
|
||
|
|
void uart_send(u32 idx, u8 *buf, u32 len);
|
||
|
|
void uart_recv(u32 idx, u8 *buf, u32 len);
|
||
|
|
|
||
|
|
#endif
|