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//========================================= // NAME: main.c // DESC: TQ2440流水灯测试程序 // 板载LED为PB //========================================= /* 头文件包含 */ #define U32 unsigned int /* 中断向量表 */ #define _ISR_STARTADDRESS 0x33ffff00 #define pISR_EINT0 (*(unsigned *)(_ISR_STARTADDRESS+0x20)) #define pISR_EINT1 (*(unsigned *)(_ISR_STARTADDRESS+0x24)) #define pISR_EINT2 (*(unsigned *)(_ISR_STARTADDRESS+0x28)) #define pISR_EINT4_7 (*(unsigned *)(_ISR_STARTADDRESS+0x30)) /* 中断控制 寄存器地址 */ #define rSRCPND (*(volatile unsigned *)0x4a000000) //Interrupt request status 源挂起寄存器 #define rINTMSK (*(volatile unsigned *)0x4a000008) //Interrupt mask control 中断屏蔽寄存器 #define rINTPND (*(volatile unsigned *)0x4a000010) //Interrupt request status 中断挂起寄存器 /* 外部中断 寄存器地址 */ #define rEXTINT0 (*(volatile unsigned *)0x56000088) //External interrupt control register 0 外部中断控制寄存器 #define rEINTMASK (*(volatile unsigned *)0x560000a4) //External interrupt mask 外部中断屏蔽寄存器 #define rEINTPEND (*(volatile unsigned *)0x560000a8) //External interrupt pending 外部中断挂起寄存器 /* LED灯寄存器地址 */ #define rGPBCON (*(volatile unsigned *)0x56000010) //Port B control #define rGPBDAT (*(volatile unsigned *)0x56000014) //Port B data #define rGPBUP (*(volatile unsigned *)0x56000018) //Pull-up control B /* EINT F 寄存器地址 */ #define rGPFCON (*(volatile unsigned *)0x56000050) //Port F control void led_init(void) { //板载LED为GPB[5:8] rGPBCON = (rGPBCON & ~(0xff<<10)) | (0x55<<10); //rGPBCON为01 配置为输出 rGPBUP = rGPBUP | (0xf<<5); //rGPBUP为1 禁止上拉 rGPBDAT = rGPBDAT | (0xf<<5); //LED灯全关 } void led_display(unsigned char data) { //0x0全灭 0xf全亮 0x01 0x02 0x04 0x80 各自灯亮 rGPBDAT = (rGPBDAT & ~(0xf<<5)) | ((~data) <<5); } void eint_init(void) { rGPFCON = 0xaaaa; //GPF[0:15]配置成外部中断 rSRCPND = rSRCPND | 0x1f; //清除EINT[0:7]源中断请求 rINTMSK = rINTMSK & ~(0x1f); //清除EINT[0:7]中断屏蔽请求 rINTPND = rINTPND | 0x1f; //清除EINT[0:7]中断挂起请求 rEINTPEND = rEINTPEND | (1<<4); rEINTMASK = rEINTMASK & ~(1<<4); rEXTINT0 = rEXTINT0 & ~((0x7<<0) | (0x7<<4) | (0x7<<8) | (0x7<<16)); rEXTINT0 = rEXTINT0 | ((0x2<<0) | (0x2<<4) | (0x2<<8) | (0x2<<16));//EINT下降沿触发方式 01x 0x2 } static void __irq Key1_ISR(void) //EINT1 { rSRCPND = rSRCPND | (0x1<<1); rINTPND = rINTPND | (0x1<<1); led_display(0x1); } static void __irq Key2_ISR(void) //EINT4 { rSRCPND = rSRCPND | (0x1<<4); rINTPND = rINTPND | (0x1<<4); if(rEINTPEND & (1<<4)) { rEINTPEND = rEINTPEND | (0x1<<4); led_display(0x2); } } static void __irq Key3_ISR(void) //EINT2 { rSRCPND = rSRCPND | (0x1<<2); rINTPND = rINTPND | (0x1<<2); led_display(0x4); } static void __irq Key4_ISR(void) //EINT0 { rSRCPND = rSRCPND | 0x1; rINTPND = rINTPND | 0x1; led_display(0x8); } void Main(void) { led_init(); eint_init(); /* 中断函数入口地址 */ pISR_EINT0 = (U32)Key4_ISR; pISR_EINT1 = (U32)Key1_ISR; pISR_EINT2 = (U32)Key3_ISR; pISR_EINT4_7 = (U32)Key2_ISR; while(1); } 供货情况： 天嵌科技提供专业嵌入式板卡和行业解决方案。如有需要，可以联系天嵌科技的销售人员。 销售电话：020-38219416 38373101 技术支持：020-38219416转807、820
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