DS41356B datasheet(30/54 Pages) MICROCHIP

30 / 54 page

Low Pin Count USB Development Kit User’s Guide

DS41356B-page 26

EXAMPLE 2-9:

KEYBOARD() STATE MACHINE CODE

//delay to allow the hold capacitor on the ADC to charge

case 0:

if(++delaycounter>9000)

{

delaycounter = 0;

state = 1;

}

break;

case 1:

ADCON0bits.GO_DONE = 1; //Start an ADC conversion

state = 2;

break;

case 2:

if(ADCON0bits.GO_DONE == 0) //Check if conversion is

//completed

{

state = 3;

}

break;

case 3:

HIDoutput = ADRESH>>3;//shift the result in ADRESH

//left by three

if(HIDoutput<=4) HIDoutput = 4;

if(HIDoutput>=29) HIDoutput = 29;

//Can the SIE transmit?

if((HIDTxHandleBusy(lastTransmission) == 0))

{

//Load the HID buffer

hid_report_in[0] = 0;

hid_report_in[1] = 0;

hid_report_in[2] = HIDoutput;

hid_report_in[3] = 0;

hid_report_in[4] = 0;

hid_report_in[5] = 0;

hid_report_in[6] = 0;

hid_report_in[7] = 0;

//Send the 8 byte packet over USB to the host.

lastTransmission = HIDTxPacket(HID_EP,

(BYTE*)hid_report_in, 0x08);

state = 0;

}

break;

DS41356B Datasheet(PDF) 30 Page - Microchip Technology

DS41356B Datasheet(HTML) 30 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

Datasheet Download

Link URL