خواندن از دو کانال adc
سلام دوستان
اگه میشه راهنماییم کنید چطوری تو یه برنامه از دو تا کانال بخونم.
البته از روی فیلم آموزشی یه کد نوشتم که از دو تا ADC بخونم و روی LCD نشون بدم و باقی کارا، تا جایی که شد خیلی دست تو کدای اصلی نبردم که خرابکاری نکنم، اما وقتی کد رو به این صورت مینویسم که یه تابع ADC_Read تعریف میکنم با آرگومان Channel و یه بار 6 قرارش میدم و یه بار 7، اول با آرگومان 6 میخونه و سر خط فراخونی تابع با آرگومان 7 میمونه.
ینی دستورات تا این خط اجرا میشه current_value = ADC_Read(7); و دیگه اجرا نمیشه.
وقتیم به این صورت مینویسم و دو تا تابع تعریف میکنم یعنی یه تابع ADC_Read و یه تابع ADC_Read1 و هر کدومو جدا فراخونی میکنم هر دو رو میخونه ولی فقط یه بار، و حلقه بسته ای که گذاشتم که مرتب ADCها رو بخونم و بعد هر بار خوندن تو LCD نشون بدم این حلقه دیگه تکرار نمیشه.کد:unsigned short ADC_Read(unsigned char channel) { unsigned int i; //----------------------------- if (channel == 6) LPC_PINCON->PINSEL0 |= 2 << 6; /* p0.3 select as ADC0.6 */ else if (channel == 7) LPC_PINCON->PINSEL0 |= 2 << 4; /* p0.2 select as ADC0.7 */ LPC_SC->PCONP |= (1 << 12); // Enable power to AD block LPC_ADC->ADCR |= 1<<channel; //select AD0.4 TO AD0.5 depend adc channel nomber LPC_ADC->ADCR |= 0x0100; // ADCLK is 12.5 MHz //LPC_ADC->ADCR |= 0x10000; // BURST bit 1 << 16 LPC_ADC->ADCR |= 0x200000; //Power up, 1 << 21 //LPC_ADC->ADCR |= 0x08000000; //Start conversion on a falling edge on the selected CAP/MAT signal. // 1 << 27 //----------------------------- LPC_ADC->ADCR |= 0x01000000; // Start A/D Conversion do { switch (channel) { case 6: i = LPC_ADC->ADDR6; // Read A/D Data Register break; case 7: i = LPC_ADC->ADDR7; // Read A/D Data Register break; } } while ((i & 0x80000000) == 0); // Wait for end of A/D Conversion return (i >> 4) & 0x0FFF; // bit 4:15 is 10 bit AD value } int main (void) { unsigned short current_value; unsigned int l = 0; unsigned int r = 0; unsigned int m = 0; char h[100]; char p[100]; unsigned int n; LPC_GPIO0->FIODIR = ((1<<4)|(1<<5)|(1<<6)|(1<<7)|(1<<8)|(1<<9)|(1<<10)); LPC_GPIO0->FIOMASK = 0; LPC_GPIO0->FIOCLR = ((1<<4)|(1<<5)|(1<<6)|(1<<7)|(1<<8)|(1<<9)|(1<<10)); //LCD_4 BIT MODE lcd_init_4bit(); SystemInit(); command(0x01); lcd_putsf(" NavaBehdasht 2 "); Delay(10000); command(0x01); command(0x0c); while(1){ l=0; for(n=0;n<=10;n++) { Delay(1000); current_value = ADC_Read(6); l=l+current_value; } l=l/10; sprintf(h,"%i",l); command(0x80); lcd_putsf("L: "); command(0x82); lcd_putsf(h); delay(11000); r=0; for(n=0;n<=10;n++) { Delay(1000); current_value = ADC_Read(7); r=r+current_value; } r=r/10; sprintf(p,"%d",r); command(0x88); lcd_putsf(" R: "); command(0x8b); lcd_putsf(p); delay(11000); m=l-r; sprintf(p,"%i",m); command(0xc0); lcd_putsf(" Diff: "); command(0xc8); lcd_putsf(p); delay(11000); } }
کد:unsigned short ADC_Read(unsigned char channel) { unsigned int i; //----------------------------- if (channel == 6) LPC_PINCON->PINSEL0 |= 2 << 6; /* p0.3 select as ADC0.6 */ else if (channel == 7) LPC_PINCON->PINSEL0 |= 2 << 4; /* p0.2 select as ADC0.7 */ LPC_SC->PCONP |= (1 << 12); // Enable power to AD block LPC_ADC->ADCR |= 1<<channel; //select AD0.4 TO AD0.5 depend adc channel nomber LPC_ADC->ADCR |= 0x0100; // ADCLK is 12.5 MHz //LPC_ADC->ADCR |= 0x10000; // BURST bit 1 << 16 LPC_ADC->ADCR |= 0x200000; //Power up, 1 << 21 //LPC_ADC->ADCR |= 0x08000000; //Start conversion on a falling edge on the selected CAP/MAT signal. // 1 << 27 //----------------------------- LPC_ADC->ADCR |= 0x01000000; // Start A/D Conversion do { switch (channel) { case 6: i = LPC_ADC->ADDR6; // Read A/D Data Register break; case 7: i = LPC_ADC->ADDR7; // Read A/D Data Register break; } } while ((i & 0x80000000) == 0); // Wait for end of A/D Conversion return (i >> 4) & 0x0FFF; // bit 4:15 is 10 bit AD value } unsigned short ADC_Read1(unsigned char channel) { unsigned int i; //----------------------------- LPC_PINCON->PINSEL3 = 3 << 28; /* p1.30 select as ADC0.4 */ LPC_PINCON->PINSEL3 <<= ((channel-4)*2); //select AD0.4 & AD0.5 pin depend channel nomber LPC_SC->PCONP |= (1 << 12); // Enable power to AD block LPC_ADC->ADCR |= 1<<channel; //select AD0.4 TO AD0.5 depend adc channel nomber LPC_ADC->ADCR |= 0x0100; // ADCLK is 12.5 MHz //LPC_ADC->ADCR |= 0x10000; // BURST bit 1 << 16 LPC_ADC->ADCR |= 0x200000; //Power up, 1 << 21 //LPC_ADC->ADCR |= 0x08000000; //Start conversion on a falling edge on the selected CAP/MAT signal. // 1 << 27 //----------------------------- LPC_ADC->ADCR |= 0x01000000; // Start A/D Conversion do { switch (channel) { case 4: i = LPC_ADC->ADDR4; // Read A/D Data Register break; case 5: i = LPC_ADC->ADDR5; // Read A/D Data Register break; } } while ((i & 0x80000000) == 0); // Wait for end of A/D Conversion return (i >> 4) & 0x0FFF; // bit 4:15 is 10 bit AD value } int main (void) { unsigned short current_value; unsigned int l = 0; unsigned int r = 0; unsigned int m = 0; char h[100]; char p[100]; unsigned int n; LPC_GPIO0->FIODIR = ((1<<4)|(1<<5)|(1<<6)|(1<<7)|(1<<8)|(1<<9)|(1<<10)); LPC_GPIO0->FIOMASK = 0; LPC_GPIO0->FIOCLR = ((1<<4)|(1<<5)|(1<<6)|(1<<7)|(1<<8)|(1<<9)|(1<<10)); //LCD_4 BIT MODE lcd_init_4bit(); SystemInit(); command(0x01); lcd_putsf(" NavaBehdasht 2 "); Delay(10000); command(0x01); command(0x0c); while(1){ l=0; for(n=0;n<=10;n++) { Delay(1000); current_value = ADC_Read(6); l=l+current_value; } l=l/10; sprintf(h,"%i",l); command(0x80); lcd_putsf("L: "); command(0x82); lcd_putsf(h); delay(11000); r=0; for(n=0;n<=10;n++) { Delay(1000); current_value = ADC_Read1(4); r=r+current_value; } r=r/10; sprintf(p,"%d",r); command(0x88); lcd_putsf(" R: "); command(0x8b); lcd_putsf(p); delay(11000); m=l-r; sprintf(p,"%i",m); command(0xc0); lcd_putsf(" Diff: "); command(0xc8); lcd_putsf(p); delay(11000); } }
البته برنامه نه ارور میده و نه وارنینگ.
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