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本帖最后由 gxt15s 于 2013-5-10 14:45 编辑
出现警告的函数:
int address_map(void)
{
//SPI registers
r_SPCON0 = ioremap(0x59000000,4); //将一个IO地址空间映射到内核的虚拟地址空间上去,便于访问
r_SPSTA0 = ioremap(0x59000004,4);
r_SPPIN0 = ioremap(0x59000008,4);
r_SPPRE0 = ioremap(0x5900000C,4);
r_SPTDAT0 = ioremap(0x59000010,4);
r_SPRDAT0 = ioremap(0x59000014,4);
//I/O registers
r_GPACON=ioremap(0x56000000,4);
r_GPADAT=ioremap(0x56000004,4);
r_GPECON = ioremap(0x56000040,4);
r_GPEUP = ioremap(0x56000048,4);
r_GPGCON = ioremap(0x56000060,4);
r_GPGUP = ioremap(0x56000068,4);
r_GPGDAT = ioremap(0x56000064,4);
return 0;
}
变量定义:
#define rSPCON0 (*(volatile unsigned long *)r_SPCON0) /*SPI control Register*/
#define rSPSTA0 (*(volatile unsigned long *)r_SPSTA0) /*SPI status Register*/
#define rSPPIN0 (*(volatile unsigned long *)r_SPPIN0) /* SPI pin controlRegister*/
#define rSPPRE0 (*(volatile unsigned long *)r_SPPRE0) /*SPI Baud Rate Prescaler Register */
#define rSPTDAT0 (*(volatile unsigned long *)r_SPTDAT0) /*SPI Tx Data Register*/
#define rSPRDAT0 (*(volatile unsigned long *)r_SPRDAT0) /*SPI Rx Data Register*/
#define rGPACON (*(volatile unsigned long *)r_GPACON) /*nGCS2*/
#define rGPADAT (*(volatile unsigned long *)r_GPADAT) /*nGCS2*/
/*I/O registers*/
#define rGPECON (*(volatile unsigned long *)r_GPECON) /*Configure the pins of port E*/
#define rGPEUP (*(volatile unsigned long *)r_GPEUP) /*Pull-up disable register for port E*/
#define rGPGCON (*(volatile unsigned long *)r_GPGCON) /*nSS0 nSS1 Configure the pins of port G nSS0*/
#define rGPGUP (*(volatile unsigned long *)r_GPGUP) /*Pull-up disable register for port G*/
#define rGPGDAT (*(volatile unsigned long *)r_GPGDAT) /*The data register for port G*/
#define MCP2510_CanRevBuffer 128 //CAN接收缓冲区大小
unsigned long r_SPCON0,r_SPSTA0,r_SPPIN0,r_SPPRE0,r_SPTDAT0,r_SPRDAT0;
unsigned long r_GPECON,r_GPEUP;
unsigned long r_GPACON,r_GPADAT;
unsigned long r_GPGCON,r_GPGUP,r_GPGDAT;
错误信息:
can.h: In function `address_map':
can.h:42: warning: assignment makes integer from pointer without a cast
can.h:43: warning: assignment makes integer from pointer without a cast
can.h:44: warning: assignment makes integer from pointer without a cast
can.h:45: warning: assignment makes integer from pointer without a cast
can.h:46: warning: assignment makes integer from pointer without a cast
can.h:47: warning: assignment makes integer from pointer without a cast
can.h:51: warning: assignment makes integer from pointer without a cast
can.h:52: warning: assignment makes integer from pointer without a cast
can.h:54: warning: assignment makes integer from pointer without a cast
can.h:55: warning: assignment makes integer from pointer without a cast
can.h:58: warning: assignment makes integer from pointer without a cast
can.h:59: warning: assignment makes integer from pointer without a cast
can.h:60: warning: assignment makes integer from pointer without a cast
请问一下这个警告是怎么回事?纠结了我很久了
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