資源簡介
七段數碼管時鐘顯示的verilog源代碼，已做過FPGA驗證。
代碼片段和文件信息
#include?
#include?“system.h“
#include?“io.h“
#include?“sys/alt_irq.h“
#include?“alt_types.h“
#include?“altera_avalon_timer_regs.h“
#include?“altera_avalon_pio_regs.h“
volatile????int???TIME_COUNTER?=?0;
volatile????int???TIME_FLAG?=?0;
volatile????int???SEC_L?=?0;
volatile????int???SEC_H?=?0;
volatile????int???MIN_L?=?0;
volatile????int???MIN_H?=?0;
//時間計數
void?timer_tick（void）
{
????if（!TIME_FLAG）{
????????SEC_L++;
????????if（SEC_L?>?9）{
????????????SEC_L?=?0;
????????????SEC_H++;
????????}
????????if（SEC_H?==?6）{
????????????SEC_H?=?0;
????????????SEC_L?=?0;
????????????MIN_L++;
????????}
????????if（MIN_L?>?9）{
????????????MIN_L?=?0;
????????????MIN_H++;
????????}
????????if（MIN_H?==?6）{
????????????MIN_H?=?0;
????????????MIN_L?=?0;
????????}???
????}
????else{
????
????}
}
//將時間顯示在七段數碼管上????
void?timer_disp（void）
{
????int?time?=??MIN_H?*?16?*?16?*?16?+?MIN_L?*?16?*?16?+SEC_H?*?16?+?SEC_L;
????IOWR_32DIRECT（SEG7_0_base0time）;
}
//timer中斷服務
static?void?timer_ISR（void*?base_Address?alt_u32?Interrupt_Level）
{??
????//清除中斷標志位
????IOWR_ALTERA_AVALON_TIMER_STATUS（（alt_u32）base_Address?0）;
????//累計定時器中斷發生次數
????TIME_COUNTER++;
????if（TIME_COUNTER?==?10）{
????????TIME_FLAG?=?IORD_8DIRECT（SWITCH_PIO_0_base0）;
????????TIME_COUNTER?=?0;
????????//顯示時間狀態
????????timer_tick（）;
????????timer_disp（）;
????}
}
//timer初始化
void?timer_init（）
{
????//設置定時器為自由運行模式
????IOWR_ALTERA_AVALON_TIMER_CONTROL（TIMER_0_base?
????????????????ALTERA_AVALON_TIMER_CONTROL_ITO_MSK??|
????????????????ALTERA_AVALON_TIMER_CONTROL_CONT_MSK?|
????????????????ALTERA_AVALON_TIMER_CONTROL_START_MSK）;
????//開始中斷注冊操作??????????
????alt_irq_register（TIMER_0_IRQ?（void?*）TIMER_0_base?timer_ISR）;
}
void?alter_sec（void）
{
????SEC_L++;
????if（SEC_L?>?9）{
????????SEC_L?=?0;
????????SEC_H++;
????????if（SEC_H?>?5）{
????????????SEC_L?=?0;
????????????SEC_H?=?0;
????????}
????}
}
????????
void?alter_min（void）
{
????MIN_L++;
????if（MIN_L?>?9）{
????????MIN_L?=?0;
????????MIN_H++;
????????if（MIN_H?>?5）{
????????????MIN_L?=?0;
????????????MIN_H?=?0;
????????}
????}
}
????????
void?alter_min_h（void）
{
????MIN_H++;
????if（MIN_H?>?5）{
????????MIN_H?=?0;
????}
}
//按鍵中斷服務
void?button_ISR（void*?context?alt_u32?id）
{
????IOWR_ALTERA_AVALON_PIO_EDGE_CAP（BUTTON_PIO_0_base?0）;
????IOWR_ALTERA_AVALON_PIO_IRQ_MASK（BUTTON_PIO_0_base?0xff）;
????if（TIME_FLAG）{
????????int?button_value?=?IORD_ALTERA_AVALON_PIO_DATA（BUTTON_PIO_0_base）;
????????if（（button_value?&?0x01）?==?0）{
????????????alter_sec（）;
????????}
????????if（（button_value?&?0x02）?==?0）{
????????????alter_min（）;
????????}??
????}
}
//按鍵初始化
void?button_init（）
{
????IOWR_ALTERA_AVALON_PIO_IRQ_MASK（BUTTON_PIO_0_base?0xff）;
????IOWR_ALTERA_AVALON_PIO_EDGE_CAP（BUTTON_PIO_0_base?0x0）;
????alt_irq_register（BUTTON_PIO_0_IRQ?NULL?button_ISR）;
}???
int?main（void）
{
????button_init（）;
????timer_init（）;
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件??????????0??2008-09-15?14:19??SEG7_Timer\.me
?????文件????????747??2008-09-15?14:22??SEG7_Timer\.me
?????文件????????671??2008-09-15?15:23??SEG7_Timer\.me
?????文件????????172??2008-09-15?19:14??SEG7_Timer\.me
?????文件??????16384??2008-09-15?15:23??SEG7_Timer\.me
?????文件??????16384??2008-09-15?15:23??SEG7_Timer\.me
?????文件????????137??2008-09-15?19:14??SEG7_Timer\.me
?????文件????????239??2008-09-15?14:20??SEG7_Timer\.me
?????文件???????3080??2008-09-10?10:16??SEG7_Timer\.me
?????文件??????????0??2008-09-15?14:24??SEG7_Timer\.me
?????文件????????119??2008-09-15?14:20??SEG7_Timer\.me
?????文件????????236??2008-09-15?14:20??SEG7_Timer\.me
?????文件??????????0??2008-09-15?14:22??SEG7_Timer\.me
?????文件????????179??2008-09-15?14:20??SEG7_Timer\.me
?????文件??????????0??2008-09-15?14:24??SEG7_Timer\.me
?????文件????????120??2008-09-15?14:20??SEG7_Timer\.me
?????文件????????177??2008-09-15?14:20??SEG7_Timer\.me
?????文件?????????92??2008-09-15?14:27??SEG7_Timer\.me
?????文件????????133??2008-09-15?14:22??SEG7_Timer\.me
?????文件?????????47??2008-09-15?15:23??SEG7_Timer\.me
?????文件????????154??2008-09-15?14:20??SEG7_Timer\.me
?????文件????????207??2008-09-15?19:14??SEG7_Timer\.me
?????文件?????????48??2008-09-15?14:24??SEG7_Timer\.me
?????文件????????133??2008-09-15?14:20??SEG7_Timer\.me
?????文件????????160??2008-09-15?14:20??SEG7_Timer\.me
?????文件??????????1??2008-09-15?19:14??SEG7_Timer\.me
?????文件????????104??2008-09-15?19:14??SEG7_Timer\.me
?????文件??????????1??2008-09-15?19:14??SEG7_Timer\.me
?????文件?????264385??2008-09-15?19:14??SEG7_Timer\.me
?????文件????????506??2008-09-15?19:14??SEG7_Timer\.me
............此處省略593個文件信息
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