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nahueldiaz
Joined: 04 Mar 2014
Posts: 2
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| expecting an identifier ? |
 Posted: Tue Mar 04, 2014 3:21 pm |
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hi this is the first time of mine working with ccs so i needed to do a code to run a nrf24l01 on a pic16f88, when i did the emisor code , wich is similar to the receptor code (below) i didnt have any problems with the asm part code , but when i do the receptor this problem shows up "expecting an identifier" so i cut the asm part out of the code , and it comipiles fine so why it does that ? what is my error ? can you help me guys = / ?
receptor code =
| Code: | #device PIC16F88
#include <16F88.h>
#fuses XT //Oscilador a cristal standar
#fuses NOWDT //sin WatchDog Timer
#fuses NOPROTECT //sin proteccion de memoria de programa
#fuses NOPUT //sin PowerUp Timer
#fuses NOBROWNOUT //sin brownout
#fuses NOLVP //sin programación en baja tensión
#use delay(clock=4000000)
#include "lib_rf2gh4_10.h" // Librería para manejar el módulo SPI con el nRF24L01.
#byte porta=0x05 // Dirección del puerto A.
#byte portb=0x06 // Dirección del puerto B.
int8 ret1;
int8 data;
#int_ext // Interrupción RB0/INT del módulo RF.
void int_RB0()
{
ret1 = RF_RECEIVE();
if ( (ret1 == 0) || (ret1 == 1) )
{
do
{
data=RF_DATA[0]; // Data contendrá el valor que le llege del emisor, a través de RF_DATA[0].
#asm // If i cut from here,
BTFSS data,0
BCF PORTA,4
BTFSC data,0
BSF PORTA,4
BTFSS data,1
BCF PORTB,0
BTFSC data,1
BSF PORTB,0
BTFSS data,2
BCF PORTB,3
BTFSC data,2
BSF PORTB,3
#endasm // To here and compile the code works fine and it compiles
ret1 = RF_RECEIVE();
} while ( (ret1 == 0) || (ret1 == 1) ); // Tanto si existe entrada múltiple o simple de datos los lee.
}
}
void main() //Programa principal
{
set_tris_a(0b100000); // RA0 sustituye a RB0 y se pone un LED en RA0.
set_tris_b(0b00000011); // RB0 es para la interrupción, el resto son LEDs.
RF_INT_EN(); // Habilitar interrupción RB0/INT.
RF_CONFIG_SPI(); // Configurar módulos SPI del PIC.
RF_CONFIG(0x40,0x08); // Configurar módulo RF (canal y dirección).
RF_ON(); // Activar el módulo RF.
while(true); // Bucle infinito.
}
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Ttelmah
Joined: 11 Mar 2010
Posts: 19504
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| Posted: Tue Mar 04, 2014 3:39 pm |
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Start with the assembler.
Not necessary. It rarely is now with CCS:
| Code: |
//add after your port definitions
#bit bit0=porta.4
#bit bit1=portb.0
#bit bit2=portb.3
//Then the assembler codes as:
bit0=bit_test(data,0);
bit1=bit_test(data,1);
bit2=bit_test(data,2);
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Then:
| Code: |
} while ( (ret1 == 0) || (ret1 == 1) );
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is never going to exit. ret1, is always either 0, or 1....
Since this is in the interrupt, the code would hang (if it got to the interrupt)....
Then you never enable the interrupt, so this will never actually happen.
Then you don't show your library, but either RF_DATA is not declared, or one of the functions you call, expects an identifier passed to it, which you are missing. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Mar 04, 2014 4:06 pm |
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With regard to the asm code, the compiler doesn't like 'data'. It may be
a reserved word. Change it to 'data1' or something else, and it will
compile OK. |
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nahueldiaz
Joined: 04 Mar 2014
Posts: 2
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| Posted: Tue Mar 04, 2014 5:19 pm |
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| PCM programmer wrote: | With regard to the asm code, the compiler doesn't like 'data'. It may be
a reserved word. Change it to 'data1' or something else, and it will
compile OK. |
Thanks a lot ! |
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luckyluke
Joined: 18 Apr 2006
Posts: 45
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| Posted: Tue Mar 04, 2014 5:56 pm |
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| PCM programmer wrote: | With regard to the asm code, the compiler doesn't like 'data'. It may be
a reserved word. Change it to 'data1' or something else, and it will
compile OK. |
it might be in lib_rf2gh4_10.h |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Mar 04, 2014 6:06 pm |
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That's not the reason, because the simple program below also fails.
But if you change it to data1 or some other name, then it compiles:
| Code: |
#include <16F88.h>
#fuses INTRC_IO, NOWDT
#use delay(clock=4M)
int8 data;
//======================
void main()
{
#asm
BTFSS data,0
#endasm
while(1);
} |
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jeremiah
Joined: 20 Jul 2010
Posts: 1346
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| Posted: Tue Mar 04, 2014 8:56 pm |
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DATA is a reserved ASM command that CCS uses to setup and initialize variables. I don't think it is a microchip keyword, but a CCS ASM command.
EDIT: Here's some example code that produces the DATA keyword in the ASM
| Code: |
#case
#include <24FJ64GB002.h>
#FUSES NOWDT, FRC, PR_PLL, HS, CKSNOFSM, ICSP1, NOJTAG, NODEBUG
#use delay(clock=8000000,crystal=12000000)
typedef struct{
unsigned int16 value;
unsigned int8 test;
unsigned int16 second;
struct{
int8 test;
int8 val;
}vals;
} stype;
#define DEFAULT_STRUCT {1,23,4056,{7,128}}
stype special[34] = {DEFAULT_STRUCT};
void main(void){
while(TRUE);
}
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The ASM generated in 5.019 for this is (see line 0212):
| Code: |
0000: GOTO 200
.................... #case
.................... #include <24FJ64GB002.h>
.................... //////////// Standard Header file for the PIC24FJ64GB002 device ////////////////
.................... ///////////////////////////////////////////////////////////////////////////
.................... //// (C) Copyright 1996, 2013 Custom Computer Services ////
.................... //// This source code may only be used by licensed users of the CCS C ////
.................... //// compiler. This source code may only be distributed to other ////
.................... //// licensed users of the CCS C compiler. No other use, reproduction ////
.................... //// or distribution is permitted without written permission. ////
.................... //// Derivative programs created using this software in object code ////
.................... //// form are not restricted in any way. ////
.................... ///////////////////////////////////////////////////////////////////////////
.................... #device PIC24FJ64GB002
....................
.................... #list
....................
.................... #FUSES NOWDT, FRC, PR_PLL, HS, CKSNOFSM, ICSP1, NOJTAG, NODEBUG
....................
.................... #use delay(clock=8000000,crystal=12000000)
....................
.................... typedef struct{
.................... unsigned int16 value;
.................... unsigned int8 test;
.................... unsigned int16 second;
.................... struct{
.................... int8 test;
.................... int8 val;
.................... }vals;
.................... } stype;
....................
.................... #define DEFAULT_STRUCT {1,23,4056,{7,128}}
....................
.................... stype special[34] = {DEFAULT_STRUCT};
....................
.................... void main(void){
*
0200: MOV #2780,W15
0202: MOV #27FF,W0
0204: MOV W0,20
0206: NOP
0208: BSET.B 81.7
020A: MOV #A0,W4
020C: MOV W4,744
020E: SETM 32C
0210: BRA 23A
0212: DATA 80,08,08
0214: DATA 00,01,00
0216: DATA 17,00,D8
0218: DATA 0F,07,80
021A: DATA 41,08,00
021C: DATA 00,00,00
021E: INC W2,W2
0220: CP W2,#1
0222: BRA NZ,22C
0224: TBLRDL [W1],W3
0226: TBLRDH [W1++],W4
0228: MOV.B 6,W0L
022A: RETURN
022C: CP W2,#2
022E: BRA NZ,234
0230: MOV.B 7,W0L
0232: RETURN
0234: MOV.B 8,W0L
0236: CLR W2
0238: RETURN
023A: MOV #0,W6
023C: MOV #0,W0
023E: MOV W0,32
0240: MOV #212,W0
0242: MOV W0,W1
0244: CLR W2
0246: CALL 21E
024A: MOV.B W0L,B
024C: CALL 21E
0250: MOV.B W0L,A
0252: CP0 W5
0254: BRA Z,288
0256: BTSS W5.F
0258: BRA 268
025A: CALL 21E
025E: MOV.B W0L,D
0260: CALL 21E
0264: MOV.B W0L,C
0266: BCLR W5.F
0268: BTSS W5.E
026A: BRA 27C
026C: BCLR W5.E
026E: DEC W5,W5
0270: CALL 21E
0274: MOV.B W0L,W7L
0276: REPEAT W5
0278: MOV.B W7L,[W6++]
027A: BRA 246
027C: CALL 21E
0280: MOV.B W0L,[W6++]
0282: DEC W5,W5
0284: BRA NZ,27C
0286: BRA 246
....................
.................... while(TRUE);
0288: BRA 288
.................... }
028A: PWRSAV #0
Configuration Fuses:
Word 1L: 3F7F WPOSTS16 WDT128 WINDIS NOWDT ICSP1 NODEBUG NOWRT NOPROTECT NOJTAG
H: FF00
Word 2L: AB7E HS NOALTI2C1 IOL1WAY NOOSCIO CKSNOFSM PR_PLL PLL96MHZ PLLDIV3 IESO
H: FF00
Word 3L: FFFF WPFP SOSC_HIGH WUT_DEFAULT WPDIS NOWPCFG WPEND
H: FF00
Word 4L: FFFF DSWDT2147483648 DSWDTCK_LPRC RTCOSC_SOSC DSBOR DSWDT
H: FF00
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