STK500+Digitalni potenciometar

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Endeo
Pravo uznapredovao :)
Pravo uznapredovao :)
Posts: 244
Joined: 10-03-2012, 21:38
Location: Split

STK500+Digitalni potenciometar

Post by Endeo »

Pozdrav :)

Imam seminarski za obraditi o digitalnom potenciometru tvrtke mikroelektronika i ja sam obradio teorijsku pozadinu pa sam htio pitati na stranici od plocice ima primjer za avr EasyAvr6 razvojnu plocu pa sam htio pitati da li ce isti program raditi i na atmelovoj STK-500 razvojnoj ploci? Zahvaljujem :)

Code: Select all

/*
 * Project name:
     Digital Potentiometer
 * Copyright:
     (c) Mikroelektronika, 2011.
  * Revision History
     20110308:
     - initial release(SZ);
 * Description:
     This program demonstrates the usage of Digital Potentiometer Board (MCP41010).
     Voltage derived from PW pin is read by MCU's ADC (ADC0). Scaled value is then displayed at PORTD LEDs.
     It's all happening in an endless loop.
 * Test configuration:
     MCU:             ac:ATMega16
                      http://www.atmel.com/dyn/resources/prod_documents/doc2466.pdf
     Dev.Board:       ac:EasyAVR6
                      http://www.mikroe.com/eng/products/view/321/easyavr6-development-system/
     Oscillator:      HS, 08.0000 MHz
     Ext. Modules:    ac:Digital_Potentiometer
                      http://www.mikroe.com/en/tools/digitalpot/
     SW:              mikroC PRO for AVR
                      http://www.mikroe.com/eng/products/view/228/mikroc-pro-for-avr/
 * NOTES:
     - Digital Potenciometer Board must be connected on PORTB (SW1.3, SW1.6 and SW1.7 - ON).
     - Connect PA to Vcc, PB to Gnd and PW to PA0 pin.
     - Don't use pull-up(down) resistor at PA0 pin.
     - Turn ON PORTD LEDs (SW8.4).
*/

sbit DigPot_CS at PORTB0_bit;
sbit DigPot_CS_Direction at DDB0_bit;

unsigned int adc_value;
unsigned short counter = 0;

void InitMain() {
  DDA0_bit = 0;                          // Set RA0 as input
  DigPot_CS_Direction = 1;               // Set RB0 pin as output
  DDRD  = 0xFF;                          // PORTD is output
  ADC_Init();                            // Initialize ADC module
  SPI1_Init();                           // Initialize SPI module

}

void main() {

  InitMain();                            // Perform main initialization
  Delay_ms(100);

  while (1) {                            // Endless loop
    DigPot_CS = 0;                       // Select PotentioMeter chip
    SPI1_Write(0b00010001);              // Issue COMMAND Write data
    SPI1_Write(counter);                 // Send DATA byte
    DigPot_CS = 1;                       // Deselect PotentioMeter chip

    adc_value = ADC_Get_Sample(0);       // Get 10-bit results of AD conversion
    PORTD = adc_value >> 2;              // Scale it (divide by 4) and display it at PORTD LEDs
    Delay_ms(50);
    if (counter++ == 255) counter = 0;
  }
}
Nadan se da san ispravno stavio za prikazat kod :? i evo stranica te add-on plocice
http://www.mikroe.com/add-on-boards/var ... ntiometer/

Zahvaljujem :)
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