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Read/write data from/to peripheral register
http://forum.andestech.com/viewtopic.php?f=25&t=791		 Page 1 of 1
Author:  cindy [ Mon Jan 27, 2014 3:05 pm ]
Post subject:  Read/write data from/to peripheral register
Read/write data from/to peripheral register

word access example:

#define inw(reg) (*((volatile unsigned int *) (reg)))
#define outw(reg, data) ((*((volatile unsigned int *)(reg)))=(unsigned int)(data))
#define UART_BASE 0x99600000

outw(UART_BASE + 0x00, 0x36);
temp=inw(UART_BASE + 0x08);
-----------------------------------------------------------------------------------------------
half-word access example:

#define inh(reg) (*((volatile unsigned short *) (reg)))
#define outh(reg, data) ((*((volatile unsigned short *)(reg)))=(unsigned short)(data))
#define UART_BASE 0x99600000

outh(UART_BASE + 0x00, 0x36);
temp=inh(UART_BASE + 0x08);
-----------------------------------------------------------------------------------------------
byte access example:

#define inb(reg) (*((volatile unsigned char *) (reg)))
#define outb(reg, data) ((*((volatile unsigned char *)(reg)))=(unsigned char)(data))
#define UART_BASE 0x99600000

outb(UART_BASE + 0x00, 0x36);
temp=inb(UART_BASE + 0x08);
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