📄 ad98502.c
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#include "SPCE061V004.H"
extern ctr_word[5];
extern float a;
extern unsigned long int f_value;
const unsigned long freq_int[]={2755, 8249, 13693, 19052, 24293,
29385, 34296, 38996, 43456, 47648,
51546, 55127, 58369, 61250, 63755,
65867, 67574, 68864, 69730, 70166,
70171, 69743, 68886, 67604, 65906,
63802, 61305, 58431, 55196, 51622,
47730, 43544, 39089, 34394, 29487,
24398, 19159, 13803, 8360, 2867,
2867, 8360, 13803, 19159, 24398,
29487, 34394, 39089, 43544, 47730,
51622, 55196, 58431, 61305, 63802,
65906, 67604, 68886, 69743, 70171,
70166, 69730, 68864, 67574, 65867,
63755, 61250, 58369, 55127, 51546,
47648, 43456, 38996, 34296, 29385,
24293, 19052, 13693, 8249, 2755};
extern void irq_on(void);
extern void irq_off(void);
extern unsigned int trige;
//=======================================================================================
//
//=======================================================================================
void wr_word(void)
{
int i,j;
*P_IOB_Buffer |= 0x4000;
for(j=0;j<5;j++)
{
*P_IOB_Buffer=ctr_word[j]; //5 byte ctr_word
*P_IOB_Buffer |= 0x8000;
*P_IOB_Buffer &= 0x7fff;
}
*P_IOB_Buffer |= 0x4000; //update
}
//=======================================================================================
//
//=======================================================================================
void step_forword(void)
{
int i,j;
f_value |= ctr_word[1];
f_value <<= 8;
f_value |= ctr_word[2];
f_value <<= 8;
f_value |= ctr_word[3];
f_value <<= 8;
f_value |= ctr_word[4];
f_value += 0x22f4;
if(f_value > 0x50000000)
f_value = 0x50000000;
ctr_word[4] = f_value;
ctr_word[4] &= 0x00ff;
f_value >>= 8;
ctr_word[3] = f_value;
ctr_word[3] &= 0x00ff;
f_value >>= 8;
ctr_word[2] = f_value;
ctr_word[2] &= 0x00ff;
f_value >>= 8;
ctr_word[1] = f_value;
ctr_word[1] &= 0x00ff;
wr_word();
}
//=======================================================================================
//
//=======================================================================================
void step_backword(void)
{
int i,j;
f_value |= ctr_word[1];
f_value <<= 8;
f_value |= ctr_word[2];
f_value <<= 8;
f_value |= ctr_word[3];
f_value <<= 8;
f_value |= ctr_word[4];
f_value -= 0x22f4;
if(f_value < 0x015d86)
f_value = 0x015d86;
ctr_word[4] = f_value;
ctr_word[4] &= 0x00ff;
f_value >>= 8;
ctr_word[3] = f_value;
ctr_word[3] &= 0x00ff;
f_value >>= 8;
ctr_word[2] = f_value;
ctr_word[2] &= 0x00ff;
f_value >>= 8;
ctr_word[1] = f_value;
ctr_word[1] &= 0x00ff;
wr_word();
}
//=======================================================================================
//
//=======================================================================================
void sin_send(unsigned long int f_con)
{
int i,j;
a=89.4784853*f_con;
f_value = (long)a;
ctr_word[4] = f_value;
ctr_word[4] &= 0x00ff;
f_value >>= 8;
ctr_word[3] = f_value;
ctr_word[3] &= 0x00ff;
f_value >>= 8;
ctr_word[2] = f_value;
ctr_word[2] &= 0x00ff;
f_value >>= 8;
ctr_word[1] = f_value;
ctr_word[1] &= 0x00ff;
wr_word();
}
//=======================================================================================
//
//=======================================================================================
void fm_generate_5k(void)
{
int yjm_sw=0,tk; //global
unsigned long int yjm_f_value = 0; //global
unsigned long int f_value2 = 0; //global
int fm_count=0; //global
int fm_out,key_value;
int f_value_reg;
trige=0;
*P_IOB_Attrib=0xffff;
*P_IOB_Dir=0xffff;
*P_IOB_Data=0xffff;
*P_SystemClock=0x74;
tk=1000;
while(tk--);
irq_off();
*P_TimerA_Data=0xfffd;
*P_TimerA_Ctrl=0x0031; //use clk a
*P_INT_Ctrl=0x1000;
irq_on();
f_value2 |= ctr_word[1];
f_value2 <<= 8;
f_value2 |= ctr_word[2];
f_value2 <<= 8;
f_value2 |= ctr_word[3];
f_value2 <<= 8;
f_value2 |= ctr_word[4];
f_value_reg = f_value2;
fm_out = 1;
while(fm_out)
{
if(trige)
{
trige=0;
fm_count++;
if(fm_count < 40)
{
f_value2 += freq_int[fm_count];
yjm_f_value=f_value2;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
for(yjm_sw=0;yjm_sw<5;yjm_sw++)
{
*P_IOB_Buffer=ctr_word[yjm_sw]; //5 byte ctr_word
*P_IOB_Buffer |= 0x8000;
*P_IOB_Buffer &= 0x7fff;
}
*P_IOB_Buffer |= 0x4000; //update
}
else
{
f_value2 -= freq_int[fm_count];
yjm_f_value=f_value2;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
for(yjm_sw=0;yjm_sw<5;yjm_sw++)
{
*P_IOB_Buffer=ctr_word[yjm_sw]; //5 byte ctr_word
*P_IOB_Buffer |= 0x8000;
*P_IOB_Buffer &= 0x7fff;
}
*P_IOB_Buffer |= 0x4000; //update
}
}
if(fm_count >= 78)
{
fm_count=0;
key_value=(*P_IOA_Data & 0x00ff);
if(key_value != 0x00ff)
fm_out=0;
}
*P_Watchdog_Clear = 1;
}
irq_off();
*P_INT_Ctrl=0x0000;
*P_SystemClock=0x50;
yjm_f_value=f_value_reg;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
}
//=======================================================================================
//
//=======================================================================================
void fm_generate_10k(void)
{
int yjm_sw=0,tk; //global
unsigned long int yjm_f_value = 0; //global
unsigned long int f_value2 = 0; //global
int fm_count=0; //global
int fm_out,key_value;
int f_value_reg;
trige=0;
*P_IOB_Attrib=0xffff;
*P_IOB_Dir=0xffff;
*P_IOB_Data=0xffff;
*P_SystemClock=0x74;
tk=1000;
while(tk--);
irq_off();
*P_TimerA_Data=0xfffd;
*P_TimerA_Ctrl=0x0031; //use clk a
*P_INT_Ctrl=0x1000;
irq_on();
f_value2 |= ctr_word[1];
f_value2 <<= 8;
f_value2 |= ctr_word[2];
f_value2 <<= 8;
f_value2 |= ctr_word[3];
f_value2 <<= 8;
f_value2 |= ctr_word[4];
f_value_reg = f_value2;
fm_out = 1;
while(fm_out)
{
if(trige)
{
trige=0;
fm_count++;
if(fm_count < 40)
{
f_value2 += freq_int[fm_count];
f_value2 += freq_int[fm_count];
yjm_f_value=f_value2;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
for(yjm_sw=0;yjm_sw<5;yjm_sw++)
{
*P_IOB_Buffer=ctr_word[yjm_sw]; //5 byte ctr_word
*P_IOB_Buffer |= 0x8000;
*P_IOB_Buffer &= 0x7fff;
}
*P_IOB_Buffer |= 0x4000; //update
}
else
{
f_value2 -= freq_int[fm_count];
f_value2 -= freq_int[fm_count];
yjm_f_value=f_value2;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
for(yjm_sw=0;yjm_sw<5;yjm_sw++)
{
*P_IOB_Buffer=ctr_word[yjm_sw]; //5 byte ctr_word
*P_IOB_Buffer |= 0x8000;
*P_IOB_Buffer &= 0x7fff;
}
*P_IOB_Buffer |= 0x4000; //update
}
}
if(fm_count >= 78)
{
fm_count=0;
key_value=(*P_IOA_Data & 0x00ff);
if(key_value != 0x00ff)
fm_out=0;
}
*P_Watchdog_Clear = 1;
}
irq_off();
*P_INT_Ctrl=0x0000;
*P_SystemClock=0x50;
yjm_f_value=f_value_reg;
ctr_word[4] = yjm_f_value;
ctr_word[4] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[3] = yjm_f_value;
ctr_word[3] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[2] = yjm_f_value;
ctr_word[2] &= 0x00ff;
yjm_f_value >>= 8;
ctr_word[1] = yjm_f_value;
ctr_word[1] &= 0x00ff;
}⌨️ 快捷键说明
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