project_23

[hokelvin66]

i had purchase the RR23_B recently: http://www.cytron.com.my/viewProduct.php?pcode=PR23-B&name=Multifunction%20Mobile%20Robot%20Rev2
the project work find with provided the PIC16F887A
however when i switch the PIC16F887A to PIC18F4550,the SW1(RE0) does not work even-though i try the simple LED blinking with
RE0 as input and RE2 as output(LED and buzzer)
i had made an assumption that the SW1 for PIC18F4550 is not RE0
pls help me take a look for my source code,is there something wrong since the i can build the code successfully

compiler:XC8
IDE:MPLAB X

[hokelvin66]

tis is the code

[yonghui]

portE on PIC18F4550 has analog channel attached to it, have u configure the ADCON1 properly? the analog register on PIC16F877A is diffrerent from PIC18F4550.


for all digital on PIC18F4550 : least significant 4 bits of ADCON1 need to be all 1s. ADCON1=0b00001111;

[hokelvin66]

thx,u had solve my problem. however,how do i make the port E as digital only and others are analog??

[hokelvin66]

is RC3 available on P18F4550 since VUSB had substitute it slot?

[robosang]

Refer datasheet mah...

[hokelvin66]

i change the PIC18F4550 to PIC18F4520(not much different) and the project work....i think the pr_23 is not compatible with P18F4550 since the RC3(attach to motor) is not available in this PIC...........thx for those reply