📄 serial.h
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#ifndef _SERIAL_H#define _SERIAL_H#define USE_FFUART#undef USE_BTUART#undef USE_STUART#define UART_BAUDRATE (115200)//#define LCR_VALUE (0x03) // No Parity, 8 bit data, 1 stop bit// Change between BaudRate and DLV (Value of Divisor Latch Registers:DLL,DLH)// PXA255 Processor Developer's Manual// 10.4.2.3 Divisor Latch Registers (DLL and DLH) p 10-7#define BaudToDLV(_baud) (14745600 / (16 * (_baud)))#define DLVToBaud(_dlv) (14745600 / (16 * (_dlv)))#define UART_RBR (0x00)#define UART_THR (0x00)#define UART_IER (0x04)#define UART_IIR (0x08)#define UART_FCR (0x08)#define UART_LCR (0x0C)#define UART_MCR (0x10)#define UART_LSR (0x14)#define UART_MSR (0x18)#define UART_SPR (0x1C)#define UART_ISR (0x20)#define UART_DLL (0x00)#define UART_DLH (0x04)#define UART_IER_DMAE (0x80)#define UART_IER_UUE (0x40)#define UART_IER_NRZE (0x20)#define UART_IER_RTOIE (0x10)#define UART_IER_MIE (0x08)#define UART_IER_RLSE (0x04)#define UART_IER_TIE (0x02)#define UART_IER_RAVIE (0x01)#define UART_IIR_FIFOES_MASK (0x0C)#define UART_IIR_FIFOES_NOT_FIFO (0x00)#define UART_IIR_FIFOES_FIFO (0x0C)#define UART_IIR_TOD (0x08)#define UART_IIR_IID_MASK (0x06)#define UART_IIR_IID_MODEM_STATUS (0x00)#define UART_IIR_IID_TRD (0x02)#define UART_IIR_IID_RDA (0x04)#define UART_IIR_IID_RERR (0x06)#define UART_IIR_IP (0x01)#define UART_LSR_FIFOE (0x80)#define UART_LSR_TEMT (0x40)#define UART_LSR_TDRQ (0x20)#define UART_LSR_BI (0x10)#define UART_LSR_FE (0x08)#define UART_LSR_PE (0x04)#define UART_LSR_OE (0x02)#define UART_LSR_DR (0x01)#ifndef __ASSEMBLY__extern bool uart_init(void);extern int uart_putc(int ch); // put char : \n -> \r\nextern int uart_getc(void); // get char : \r -> \nextern int uart_puts(const char *s);extern int uart_putb(int ch); // put byteextern int uart_getb(void); // get byteextern int uart_write(const void *buff, int count);#endif#endif⌨️ 快捷键说明
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