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noyz
Joined: 31 Jan 2009
Posts: 59
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| How can i read from serial ?? |
 Posted: Sat Jun 25, 2011 9:50 am |
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hi
how can i read from serial ?
i want to use interrupts..
so that i will have only one part where i can read from serial
and before that i will enable interrupts int rda
and then disable;
i want to read int from serial.. so i need to transform it also.. from string to int ..atoi ?
can you show me an example please?
i am trying this :
| Code: |
#include <18F8527.h>
#device adc=10
#device PASS_STRINGS=IN_RAM
#use delay(clock=32 000 000,RESTART_WDT)
#fuses H4, NOPUT, NOLVP, NOMCLR, NOWDT //WDT128 //BORV27
#use rs232(baud=115200,xmit=PIN_C6,rcv=PIN_C7,bits=8,restart_wdt) //PIC Uart
#include <stdlib.h>
#define BUFFER_SIZE 32
BYTE buffer[BUFFER_SIZE];
BYTE BUFFER_INDEX = 0;
char serialInput[20];
#INT_RDA
void serial_isr () {
do {
buffer[BUFFER_INDEX] = getch ();
BUFFER_INDEX++;
} while (buffer[BUFFER_INDEX - 1] != '\r');
BUFFER_INDEX = 0;
}
void main () {
setup_adc_ports ( AN0_TO_AN1 );
setup_adc ( ADC_CLOCK_INTERNAL );
setup_psp ( PSP_DISABLED );
setup_spi ( SPI_MASTER | SPI_CLK_DIV_16 | SPI_H_TO_L | SPI_XMIT_L_TO_H );
// SETUP_SPI ( SPI_MASTER | SPI_SS_DISABLED | SPI_H_TO_L | SPI_CLK_DIV_16 | SPI_XMIT_L_TO_H );
// setup_timer_0(RTCC_INTERNAL|RTCC_DIV_2);
setup_timer_1 ( T1_DISABLED );
setup_timer_2 ( T2_DISABLED, 0, 1 );
setup_timer_3 ( T3_DISABLED | T3_DIV_BY_1 );
// enable_interrupts ( INT_RTCC );
// enable_interrupts ( INT_RB );
disable_interrupts ( INT_AD );
// enable_interrupts ( INT_RDA );
disable_interrupts ( INT_RDA );
enable_interrupts ( GLOBAL );
printf ( "start" );
while (true) {
printf ( "this : " );
delay_ms ( 300 );
enable_interrupts ( INT_RDA );
delay_ms ( 200 );
disable_interrupts ( INT_RDA );
printf ( buffer );
printf ( "\r\n" );
}
}
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Last edited by noyz on Sat Jun 25, 2011 10:00 am; edited 2 times in total |
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temtronic
Joined: 01 Jul 2010
Posts: 9162
Location: Greensville,Ontario
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| Posted: Sat Jun 25, 2011 9:52 am |
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| Several examples are in the 'examples' folder( go figure !) that CCS supplies when you purchase the compiler. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sat Jun 25, 2011 1:25 pm |
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If you want to read the output from a GPS or from a cell phone, you
should come right out and tell us. There are many examples on the
forum that we can link you to (or you could search for them), and it
would save a lot of time about guessing what you really want. |
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noyz
Joined: 31 Jan 2009
Posts: 59
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| Posted: Thu Jun 30, 2011 11:06 am |
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I have an application with pic18f2550 which reads how much power one consumer drains in that moment.
So a watt reader.
I set serial there.. the output is ok to pc.
Now I want to read it on 8527 and draw a graph. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Jun 30, 2011 11:31 am |
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Post the manufacturer and model number of the wattmeter and post
a link to its specification which shows the serial protocol that it outputs.
You need to post information for us to answer the question. |
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