C Examples 3

1. C Examples 3

2. Download Links • dsPIC30F4011/4012 Data Sheet • dsPIC30F4013/3014 • dsPIC30F Family Reference Manual • MikroC • MikroC Manual • MikroC Quick Reference

5. Key DEBOUNCING

6. Key DEBOUNCING – 3(SWITCH4B) void main() { int start = 0; ADPCFG = 0xFFFF; TRISB=0b111111101; PORTB=0x0000; TRISF=0b000001; PORTF=0x0000; while(1) { Delay_ms(5000); // LONG DELAY IMPAIRS SWITCH OPERATION PORTB=~PORTB; // LED FLASHING if (Button(&PORTF, 0, 1, 1)) // Switch at PORTF Bit 0 start = 1; if (start&&Button(&PORTF, 0, 1, 0)) // Switch at PORTF Bit 0 { start=0; PORTF.F1=PORTF.F1^1; // Toggles PORTF Bit 1 } } }

7. Key DEBOUNCING – 4 (SWITCH5B) void main () { int start=0; T2CON=0b1000000000001000; // Enable Timer 2/3, Prescaler =1 IEC0=0x0080; // Enable Interrupt for Timer 3 PR2=0xE100; // (PR3PR2)BASE16 = (100,000,000)BASE10 PR3=0x05F5; ADPCFG = 0xFFFF; TRISB=0b111111101; PORTB=0x0000; TRISF=0b000001; PORTF=0x0000; while(1) { if (Button(&PORTF, 0, 1, 1)) // Switch at PORTF Bit 0 start = 1; if (start&&Button(&PORTF, 0, 1, 0)) // Switch at PORTF Bit 0 { start=0; PORTF.F1=PORTF.F1^1; // Toggles PORTF Bit 1 } } } void interrupt_T2() org 0x000022 { PORTB=PORTB^0x02; IFS0=0x0000; }

8. UART1 • U1MODE = 0x8400;

9. UART1 • unsigned char uc1, rx1; • void main() { • ADPCFG=0xFFFF; // Starts UART • Uart1_Init(19200); • // U1MODE = 0x8400; // This instruction required if using alternate pinout • delay_ms(200); • TRISB=0x0000; • PORTB=0xFFFF; • Uart1_Write_Char('a'); • while(1) { • if (Uart1_Data_Ready()) { • rx1 = Uart1_Read_Char(); • Uart1_Write_Char(++rx1); • PORTB=~PORTB; • } • } • }//~!

15. UART2B-EEL • unsigned adcRes; • char txt[6]; • void main() { • int i; • PORTB = 0x0000; • TRISB.F1 = 1; // set pin as input - needed for ADC to work • Uart1_Init(19200); • while (1) { • adcRes = Adc_Read(1); // Read ADC channel 1 • WordToStr(adcRes, txt); // Convert ADC value to text • i=0; • while (txt[i]) • { • Uart1_Write_Char(txt[i]); // Send text to UART one character at a time • i=i+1; • Delay_ms(1000); • } • } • }//~!

16. UART2B-CPE • unsigned adcRes; • char txt[6]; • void Uart1_Write_Text(char *txt_to_wr) { • while (*txt_to_wr) • Uart1_Write_Char(*(txt_to_wr++)); • } • void main() { • PORTB = 0x0000; • TRISB.F1 = 1; // set pin as input - needed for ADC to work • Uart1_Init(19200); • while (1) { • adcRes = Adc_Read(1); • WordToStr(adcRes, txt); • Uart1_Write_Text(txt); • Delay_ms(1000); • } • }//~!

18. The Family reference manual shows the connection in red, it does not show the direct connection to VREF-

20. Sampling Time To minimize the effects of pin leakage currents on the accuracy of the A/D converter, the maximum recommended source impedance, RS, is 5 kΩ for the conversion rates of up to 500 ksps and a maximum of 500Ω for conversion rates of up to 1 Msps