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pokiko
Joined: 27 Jul 2007 Posts: 33
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disable undesired outputs on P1A, P1B, P1C and P1D |
Posted: Wed Jul 09, 2008 1:32 pm |
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hi
i am using pic18f4520 with 16Mhz osc. i have an input from the TOCKI pin that i use for ccp. Also keypad is connected to portD.
when i push on some of the buttons on keypad, some undesired inputs appear on the LCD. port_d pins of d5,d6,d7 causes this situation, these three pins must configured as input.
I guess P1A,P1B,P1C and P1D cause this situation ,which are for ECCP, all have to be shutdown, . so how can i disable them. i want to use ccp module in compare mode but i dont want to use eccp module.
thanks.
Code: |
setup_oscillator(OSC_16MHZ);
SETUP_TIMER_0( RTCC_EXT_L_TO_H | RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DIV_BY_16,250,15);
output_low( PIN_E0 );
setup_comparator(NC_NC_NC_NC);
setup_CCP1( CCP_COMPARE_INT );
setup_CCP2( CCP_COMPARE_INT );
disable_interrupts( GLOBAL );
enable_interrupts(INT_TIMER0);
enable_interrupts(INT_CCP1);
enable_interrupts(INT_CCP2);
setup_psp(PSP_DISABLED);
setup_spi(SPI_SS_DISABLED);
SETUP_ADC(ADC_CLOCK_DIV_32);
setup_adc_ports(AN0_TO_AN3);
set_timer0(65535); // Arm external trigger
CCP_1=maxPERYOD;
CCP_2=CCP_1 + 5000; // Second pulse 1ms after pulse 1
set_timer1(0); |
Last edited by pokiko on Thu Jul 10, 2008 1:27 am; edited 3 times in total |
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Wed Jul 09, 2008 2:18 pm |
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Post your compiler version. |
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pokiko
Joined: 27 Jul 2007 Posts: 33
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Posted: Wed Jul 09, 2008 3:45 pm |
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My compiler version is 4.049.
I have got the solution. It was about the connections of portD. they are also connected to LCD. I added a delay_us then it worked.
thanks PCM programmer. |
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