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Geps
Joined: 05 Jul 2010
Posts: 129
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| FIXED: Reason For Switching To SW UART/PIC18F26k22 RDA |
 Posted: Tue Jan 29, 2013 3:29 am |
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Hi,
I'm using a 26K22 PIC with compiler version 4.112.
I'm trying to force CCS to use the hardware UART as opposed to a software one but it refuses to compile with FORCE_HW.
Is there anyway I can find out the reason for this?
Cheers,
| Code: | #include <18F26K22.h>
#fuses INTRC_IO, NOWDT, NOBROWNOUT, NOPUT, NOLVP, NOMCLR, PLLEN
#USE delay(internal=16Mhz, clock=64Mhz)
#use RS232 (STREAM=PC_SERIAL, baud=9600, UART1, FORCE_HW, ERRORS)
void main () {
} |
Last edited by Geps on Thu Jan 31, 2013 1:24 am; edited 1 time in total |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19369
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| Posted: Tue Jan 29, 2013 4:49 am |
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There isn't actually a FORCE_HW command. Only FORCE_SW for #use RS232. FORCE_HW, is for I2C, which defaults to software.
UART1, forces the hardware to be used.
If I remember, round your compiler version, the compiler sometimes failed to route the internal oscillator to the PLL. I'd be explicit in the code, and make sure this is set:
| Code: |
#include <18F26K22.h>
#fuses INTRC_IO, NOWDT, NOBROWNOUT, NOPUT, NOLVP, NOMCLR, PLLEN
#USE delay(internal=16Mhz, clock=64Mhz)
#use RS232 (STREAM=PC_SERIAL, baud=9600, UART1, ERRORS)
void main () {
setup_oscillator(OSC_64MHZ|OSC_INTRC);
printf("Test message\n\r");
do {
} while(TRUE);
}
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This merrily produces 'Test message', and is using the hardware UART.
Best Wishes |
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Geps
Joined: 05 Jul 2010
Posts: 129
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| Posted: Wed Jan 30, 2013 12:21 am |
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Thanks Ttelmah,
When I included that line however the output from the UART was generating errors in my RealTerm application....? When I comment it out it seems to be working fine.
The original reason for me querying the HW vs SW route was due to issues with my RDA interrupt. I figured that as it wasn't getting serviced was due to a SW UART but it seems even with UART in the #use it still has issues. Is there anything glaringly obvious here that's wrong?
| Code: |
#include <18F26K22.h>
#fuses INTRC_IO, NOWDT, NOBROWNOUT, NOPUT, NOLVP, NOMCLR, PLLEN
#USE delay(internal=16Mhz, clock=64Mhz)
#use RS232 (STREAM=PC_SERIAL, baud=115200, UART1, ERRORS)
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Interrupts
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
#INT_RDA
void pc_comms_isr() {
fprintf(PC_SERIAL, "B");
}
void main () {
int8 i = 0x00;
//setup_oscillator(OSC_64MHZ|OSC_INTRC);
delay_ms(1000);
fprintf(PC_SERIAL, "Started!");
enable_interrupts(INT_RDA);
enable_interrupts(GLOBAL);
while (TRUE) {}
}
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Ttelmah
Joined: 11 Mar 2010
Posts: 19369
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| Posted: Wed Jan 30, 2013 1:42 am |
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Two obvious things.
The ISR _must_ read the received character. Otherwise it'll loop for ever.
Second thing is printing inside the ISR. This means interrupts will be disabled in the print routine outside the ISR. Doesn't matter here, but a problem waiting to happen.
Repeat the mantra. ISR's should do _only_ what the interrupt signifies/requires. INT_RDA, should _only_ read the character. As little else as possible, but it _must_ do this.
Best Wishes |
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Geps
Joined: 05 Jul 2010
Posts: 129
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| Posted: Wed Jan 30, 2013 2:03 am |
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Thanks, but I broke the 'golden rules' as it were as I'm just trying to get into the ISR - at the moment I can't even do that!
If I compile that, run it with an FTDI TTL lead, and after it says "Started" I send by 0xFF or 0x00 byte value but it still doesn't receive the byte - at least no "B" no comes back up.
I've checked that the bytes are going to the correct pin, and I'm receiving reliably and consistently the "Started" string so I'm confident the PIC is running fine and at the correct speed.
Just wanted to make sure that there is nothing from a firmware perspective that this chip needs to receive (all three bits for enabling the interrupts as listed in the datasheet seem to be in the asm) as it's a new chip for me. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19369
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| Posted: Wed Jan 30, 2013 3:08 am |
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OK.
Do one thing.
Remark out the #nolist a couple of lines down in the chip definition file.
Recompile, and the code will include the routines for the UART. It definately is using the UART.
Now, your compiler is fairly early for the chip you are using.
Only thing you are not doing, which I do in my code using this chip, is disabling these pins for analog I/O.
The data sheet does say:
"If the TXx/CKx pin is shared with an analog
peripheral the analog I/O function must be disabled by
clearing the corresponding ANSEL bit.
If the RXx/DTx pin is shared with an analog peripheral
the analog I/O function must be disabled by clearing
the corresponding ANSEL bit."
Then:
"PORTC<7> data input; disabled when analog input
enabled"
I wonder if this is the problem.
Best Wishes |
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Geps
Joined: 05 Jul 2010
Posts: 129
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| Posted: Wed Jan 30, 2013 10:09 am |
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| Code: | CCS PCH C Compiler, Version 4.112, 93509317 30-Jan-13 15:49
Filename: C:\------\----------------\main.lst
ROM used: 368 bytes (1%)
Largest free fragment is 65164
RAM used: 28 (1%) at main() level
29 (1%) worst case
Stack: 2 worst case (1 in main + 1 for interrupts)
*
00000: GOTO 0114
*
00008: MOVWF 04
0000A: MOVFF FD8,05
0000E: MOVFF FE0,06
00012: MOVLB 0
00014: MOVFF FE9,0C
00018: MOVFF FEA,07
0001C: MOVFF FE1,08
00020: MOVFF FE2,09
00024: MOVFF FD9,0A
00028: MOVFF FDA,0B
0002C: MOVFF FF3,12
00030: MOVFF FF4,13
00034: MOVFF FFA,14
00038: MOVFF FF5,15
0003C: MOVFF FF6,16
00040: MOVFF FF7,17
00044: MOVFF 00,0E
00048: MOVFF 01,0F
0004C: MOVFF 02,10
00050: MOVFF 03,11
00054: BTFSS F9D.5
00056: GOTO 0060
0005A: BTFSC F9E.5
0005C: GOTO 00AE
00060: MOVFF 0E,00
00064: MOVFF 0F,01
00068: MOVFF 10,02
0006C: MOVFF 11,03
00070: MOVFF 0C,FE9
00074: MOVFF 07,FEA
00078: BSF 07.7
0007A: MOVFF 08,FE1
0007E: MOVFF 09,FE2
00082: MOVFF 0A,FD9
00086: MOVFF 0B,FDA
0008A: MOVFF 12,FF3
0008E: MOVFF 13,FF4
00092: MOVFF 14,FFA
00096: MOVFF 15,FF5
0009A: MOVFF 16,FF6
0009E: MOVFF 17,FF7
000A2: MOVF 04,W
000A4: MOVFF 06,FE0
000A8: MOVFF 05,FD8
000AC: RETFIE 0
....................
....................
....................
.................... #include <18F26K22.h>
.................... //////// Standard Header file for the PIC18F26K22 device ////////////////
.................... #device PIC18F26K22
*
000BC: DATA 53,74
000BE: DATA 61,72
000C0: DATA 74,65
000C2: DATA 64,21
000C4: DATA 00,00
*
000F0: TBLRD*+
000F2: MOVF FF5,F
000F4: BZ 0110
000F6: MOVFF FF6,1B
000FA: MOVFF FF7,1C
000FE: MOVF FF5,W
00100: BTFSS F9E.4
00102: BRA 0100
00104: MOVWF FAD
00106: MOVFF 1B,FF6
0010A: MOVFF 1C,FF7
0010E: BRA 00F0
00110: GOTO 016A (RETURN)
.................... //#nolist
.................... //////// Program memory: 32768x16 Data RAM: 512 Stack: 31
.................... //////// I/O: 25 Analog Pins: 20
.................... //////// Data EEPROM: 1024
.................... //////// C Scratch area: 00 ID Location: 200000
.................... //////// Fuses: LP,PROTECT,NOPROTECT,BROWNOUT_NOSL,NOBROWNOUT,WDT1,NOWDT
.................... //////// Fuses: BORV45,PUT,NOPUT,CPD,NOSTVREN,STVREN,NODEBUG,DEBUG,NOLVP,WRT
.................... //////// Fuses: NOWRT,WRTD,NOIESO,NOFCMEN,NOPBADEN,CCP2B3,WRTC,WRTB,EBTR
.................... //////// Fuses: NOEBTR,EBTRB,CPB,NOLPT1OSC,NOMCLR,NOXINST,NOHFOFST,NOPLLEN
.................... //////// Fuses: PRIMARY_SW,TIMER3B5,CCP2C0,BROWNOUT,WDT8,NOEBTRB,ECL,EC_IO
.................... //////// Fuses: EC,INTRC_IO,H4,HS,PLLEN,FCMEN,BROWNOUT_SW,BORV27,WDT
.................... //////// Fuses: WDT_NOSLEEP,WDT16384,WDT4096,WDT1024,WDT256,WDT64,WDT16,WDT2
.................... //////// Fuses: PBADEN,NODELAYINTOSC,CCP2B5,LVP,NOCPB,NOWRTC,NOWRTD,INTRC,RC
.................... //////// Fuses: PRIMARY,BORV20,WDT_SW,WDT8192,WDT512,WDT32,CCP2C1,TIMER3C0
.................... //////// Fuses: XINST,NOWRTB,RC_IO,IESO,WDT32768,WDT128,LPT1OSC,NOCPD,XT
.................... //////// Fuses: WDT2048,MCLR,BORV42,WDT4,ECL_IO
.................... ////////
.................... ////////////////////////////////////////////////////////////////// I/O
.................... // Discrete I/O Functions: SET_TRIS_x(), OUTPUT_x(), INPUT_x(),
.................... // PORT_x_PULLUPS(), INPUT(),
.................... // OUTPUT_LOW(), OUTPUT_HIGH(),
.................... // OUTPUT_FLOAT(), OUTPUT_BIT()
.................... // Constants used to identify pins in the above are:
....................
.................... #define PIN_A0 31744
.................... #define PIN_A1 31745
.................... #define PIN_A2 31746
.................... #define PIN_A3 31747
.................... #define PIN_A4 31748
.................... #define PIN_A5 31749
.................... #define PIN_A6 31750
.................... #define PIN_A7 31751
....................
.................... #define PIN_B0 31752
.................... #define PIN_B1 31753
.................... #define PIN_B2 31754
.................... #define PIN_B3 31755
.................... #define PIN_B4 31756
.................... #define PIN_B5 31757
.................... #define PIN_B6 31758
.................... #define PIN_B7 31759
....................
.................... #define PIN_C0 31760
.................... #define PIN_C1 31761
.................... #define PIN_C2 31762
.................... #define PIN_C3 31763
.................... #define PIN_C4 31764
.................... #define PIN_C5 31765
.................... #define PIN_C6 31766
.................... #define PIN_C7 31767
....................
.................... #define PIN_E3 31779
....................
.................... ////////////////////////////////////////////////////////////////// Useful defines
.................... #define FALSE 0
.................... #define TRUE 1
....................
.................... #define BYTE int8
.................... #define BOOLEAN int1
....................
.................... #define getc getch
.................... #define fgetc getch
.................... #define getchar getch
.................... #define putc putchar
.................... #define fputc putchar
.................... #define fgets gets
.................... #define fputs puts
....................
.................... ////////////////////////////////////////////////////////////////// Control
.................... // Control Functions: RESET_CPU(), SLEEP(), RESTART_CAUSE()
.................... // Constants returned from RESTART_CAUSE() are:
....................
.................... #define WDT_TIMEOUT 7
.................... #define MCLR_FROM_SLEEP 11
.................... #define MCLR_FROM_RUN 15
.................... #define NORMAL_POWER_UP 12
.................... #define BROWNOUT_RESTART 14
.................... #define WDT_FROM_SLEEP 3
.................... #define RESET_INSTRUCTION 0
....................
.................... ////////////////////////////////////////////////////////////////// Timer 0
.................... // Timer 0 (AKA RTCC)Functions: SETUP_COUNTERS() or SETUP_TIMER_0(),
.................... // SET_TIMER0() or SET_RTCC(),
.................... // GET_TIMER0() or GET_RTCC()
.................... // Constants used for SETUP_TIMER_0() are:
.................... #define T0_INTERNAL 0
.................... #define T0_EXT_L_TO_H 32
.................... #define T0_EXT_H_TO_L 48
....................
.................... #define T0_DIV_1 8
.................... #define T0_DIV_2 0
.................... #define T0_DIV_4 1
.................... #define T0_DIV_8 2
.................... #define T0_DIV_16 3
.................... #define T0_DIV_32 4
.................... #define T0_DIV_64 5
.................... #define T0_DIV_128 6
.................... #define T0_DIV_256 7
....................
.................... #define T0_OFF 0x80
....................
.................... #define T0_8_BIT 0x40
....................
.................... #define RTCC_INTERNAL 0 // The following are provided for compatibility
.................... #define RTCC_EXT_L_TO_H 32 // with older compiler versions
.................... #define RTCC_EXT_H_TO_L 48
.................... #define RTCC_DIV_1 8
.................... #define RTCC_DIV_2 0
.................... #define RTCC_DIV_4 1
.................... #define RTCC_DIV_8 2
.................... #define RTCC_DIV_16 3
.................... #define RTCC_DIV_32 4
.................... #define RTCC_DIV_64 5
.................... #define RTCC_DIV_128 6
.................... #define RTCC_DIV_256 7
.................... #define RTCC_OFF 0x80
.................... #define RTCC_8_BIT 0x40
....................
.................... // Constants used for SETUP_COUNTERS() are the above
.................... // constants for the 1st param and the following for
.................... // the 2nd param:
....................
.................... ////////////////////////////////////////////////////////////////// WDT
.................... // Watch Dog Timer Functions: SETUP_WDT() or SETUP_COUNTERS() (see above)
.................... // RESTART_WDT()
.................... // WDT base is 4ms
.................... //
.................... #define WDT_ON 0x100
.................... #define WDT_OFF 0
....................
.................... ////////////////////////////////////////////////////////////////// Timer 1
.................... // Timer 1 Functions: SETUP_TIMER_1, GET_TIMER1, SET_TIMER1
.................... // Constants used for SETUP_TIMER_1() are:
.................... // (or (via |) together constants from each group)
.................... #define T1_DISABLED 0
.................... #define T1_INTERNAL 0x07
.................... #define T1_EXTERNAL 0x87
.................... #define T1_EXTERNAL_SYNC 0x83
.................... #define T1_FOSC 0x47
....................
.................... #define T1_ENABLE_SOSC 0x08
....................
.................... #define T1_DIV_BY_1 0
.................... #define T1_DIV_BY_2 0x10
.................... #define T1_DIV_BY_4 0x20
.................... #define T1_DIV_BY_8 0x30
....................
.................... #define T1_GATE 0x8000
.................... #define T1_GATE_INVERTED 0xC000
.................... #define T1_GATE_TOGGLE 0xA000
.................... #define T1_GATE_SINGLE 0x9000
.................... #define T1_GATE_TIMER2 0x8100
.................... #define T1_GATE_COMP1 0x8200
.................... #define T1_GATE_COMP2 0x8300
....................
....................
.................... ////////////////////////////////////////////////////////////////// Timer 2
.................... // Timer 2 Functions: SETUP_TIMER_2, GET_TIMER2, SET_TIMER2
.................... // Constants used for SETUP_TIMER_2() are:
.................... #define T2_DISABLED 0
.................... #define T2_DIV_BY_1 4
.................... #define T2_DIV_BY_4 5
.................... #define T2_DIV_BY_16 6
....................
.................... ////////////////////////////////////////////////////////////////// Timer 3
.................... // Timer 3 Functions: SETUP_TIMER_3, GET_TIMER3, SET_TIMER3
.................... // Constants used for SETUP_TIMER_3() are:
.................... // (or (via |) together constants from each group)
.................... #define T3_DISABLED 0
.................... #define T3_INTERNAL 0x07
.................... #define T3_EXTERNAL 0x87
.................... #define T3_EXTERNAL_SYNC 0x83
.................... #define T3_FOSC 0x47
....................
.................... #define T3_ENABLE_SOSC 0x08
....................
.................... #define T3_DIV_BY_1 0
.................... #define T3_DIV_BY_2 0x10
.................... #define T3_DIV_BY_4 0x20
.................... #define T3_DIV_BY_8 0x30
....................
.................... #define T3_GATE 0x8000
.................... #define T3_GATE_INVERTED 0xC000
.................... #define T3_GATE_TOGGLE 0xA000
.................... #define T3_GATE_SINGLE 0x9000
.................... #define T3_GATE_TIMER4 0x8100
.................... #define T3_GATE_COMP1 0x8200
.................... #define T3_GATE_COMP2 0x8300
....................
.................... // OR in one of the following to use timer 3 with a CCP unit
.................... #define T3_CCP1_TO_2 0x48
.................... #define T3_CCP2 0x8
....................
.................... ////////////////////////////////////////////////////////////////// Timer 4
.................... // Timer 4 Functions: SETUP_TIMER_4, GET_TIMER4, SET_TIMER4
.................... // Constants used for SETUP_TIMER_4() are:
.................... #define T4_DISABLED 0
.................... #define T4_DIV_BY_1 4
.................... #define T4_DIV_BY_4 5
.................... #define T4_DIV_BY_16 6
....................
.................... ////////////////////////////////////////////////////////////////// Timer 5
.................... // Timer 5 Functions: SETUP_TIMER_5, GET_TIMER5, SET_TIMER5
.................... // Constants used for SETUP_TIMER_5() are:
.................... // (or (via |) together constants from each group)
.................... #define T5_DISABLED 0
.................... #define T5_INTERNAL 0x07
.................... #define T5_EXTERNAL 0x87
.................... #define T5_EXTERNAL_SYNC 0x83
.................... #define T5_FOSC 0x47
....................
.................... #define T5_ENABLE_SOSC 0x08
....................
.................... #define T5_DIV_BY_1 0
.................... #define T5_DIV_BY_2 0x10
.................... #define T5_DIV_BY_4 0x20
.................... #define T5_DIV_BY_8 0x30
....................
.................... #define T5_GATE 0x8000
.................... #define T5_GATE_INVERTED 0xC000
.................... #define T5_GATE_TOGGLE 0xA000
.................... #define T5_GATE_SINGLE 0x9000
.................... #define T5_GATE_TIMER6 0x8100
.................... #define T5_GATE_COMP1 0x8200
.................... #define T5_GATE_COMP2 0x8300
....................
.................... ////////////////////////////////////////////////////////////////// Timer 6
.................... // Timer 6 Functions: SETUP_TIMER_6, GET_TIMER5, SET_TIMER5
.................... // Constants used for SETUP_TIMER_6() are:
.................... // (or (via |) together constants from each group)
.................... #define T6_DISABLED 0
.................... #define T6_DIV_BY_1 4
.................... #define T6_DIV_BY_4 5
.................... #define T6_DIV_BY_16 6
....................
.................... ////////////////////////////////////////////////////////////////// CCP
.................... // CCP Functions: SETUP_CCPx, SET_PWMx_DUTY
.................... // CCP Variables: CCP_x, CCP_x_LOW, CCP_x_HIGH
.................... // Constants used for SETUP_CCPx() are:
.................... #define CCP_OFF 0
.................... #define CCP_CAPTURE_FE 4
.................... #define CCP_CAPTURE_RE 5
.................... #define CCP_CAPTURE_DIV_4 6
.................... #define CCP_CAPTURE_DIV_16 7
.................... #define CCP_COMPARE_SET_ON_MATCH 8
.................... #define CCP_COMPARE_CLR_ON_MATCH 9
.................... #define CCP_COMPARE_INT 0xA
.................... #define CCP_COMPARE_INT_AND_TOGGLE 0x2
.................... #define CCP_COMPARE_RESET_TIMER 0xB
.................... #define CCP_PWM 0xC
.................... #define CCP_PWM_PLUS_1 0x1c
.................... #define CCP_PWM_PLUS_2 0x2c
.................... #define CCP_PWM_PLUS_3 0x3c
.................... //#define CCP_USE_TIMER3 0x100 OBSOLETE, SEE TIMER-3
.................... #word CCP_1 = getenv("SFR:CCPR1L")
.................... #byte CCP_1_LOW= getenv("SFR:CCPR1L")
.................... #byte CCP_1_HIGH= getenv("SFR:CCPR1H")
.................... // The following should be used with the ECCP unit only (or these in)
.................... #define CCP_PWM_H_H 0x0c
.................... #define CCP_PWM_H_L 0x0d
.................... #define CCP_PWM_L_H 0x0e
.................... #define CCP_PWM_L_L 0x0f
....................
.................... #define CCP_PWM_FULL_BRIDGE 0x40
.................... #define CCP_PWM_FULL_BRIDGE_REV 0xC0
.................... #define CCP_PWM_HALF_BRIDGE 0x80
....................
.................... #define CCP_SHUTDOWN_ON_COMP1 0x100000
.................... #define CCP_SHUTDOWN_ON_COMP2 0x200000
.................... #define CCP_SHUTDOWN_ON_COMP 0x300000
.................... #define CCP_SHUTDOWN_ON_INT0 0x400000
.................... #define CCP_SHUTDOWN_ON_COMP1_INT0 0x500000
.................... #define CCP_SHUTDOWN_ON_COMP2_INT0 0x600000
.................... #define CCP_SHUTDOWN_ON_COMP_INT0 0x700000
....................
.................... #define CCP_SHUTDOWN_AC_L 0x000000
.................... #define CCP_SHUTDOWN_AC_H 0x040000
.................... #define CCP_SHUTDOWN_AC_F 0x080000
....................
.................... #define CCP_SHUTDOWN_BD_L 0x000000
.................... #define CCP_SHUTDOWN_BD_H 0x010000
.................... #define CCP_SHUTDOWN_BD_F 0x020000
....................
.................... #define CCP_SHUTDOWN_RESTART 0x80000000
....................
.................... #define CCP_PULSE_STEERING_A 0x01000000
.................... #define CCP_PULSE_STEERING_B 0x02000000
.................... #define CCP_PULSE_STEERING_C 0x04000000
.................... #define CCP_PULSE_STEERING_D 0x08000000
.................... #define CCP_PULSE_STEERING_SYNC 0x10000000
....................
.................... #word CCP_2 = getenv("SFR:CCPR2L")
.................... #byte CCP_2_LOW= getenv("SFR:CCPR2L")
.................... #byte CCP_2_HIGH= getenv("SFR:CCPR2H")
.................... #word CCP_3 = getenv("SFR:CCPR3L")
.................... #byte CCP_3_LOW= getenv("SFR:CCPR3L")
.................... #byte CCP_3_HIGH= getenv("SFR:CCPR3H")
.................... #word CCP_4 = getenv("SFR:CCPR4L")
.................... #byte CCP_4_LOW= getenv("SFR:CCPR4L")
.................... #byte CCP_4_HIGH= getenv("SFR:CCPR4H")
.................... #word CCP_5 = getenv("SFR:CCPR5L")
.................... #byte CCP_5_LOW= getenv("SFR:CCPR5L")
.................... #byte CCP_5_HIGH= getenv("SFR:CCPR5H")
....................
.................... ////////////////////////////////////////////////////////////////// SPI
.................... // SPI Functions: SETUP_SPI, SPI_WRITE, SPI_READ, SPI_DATA_IN
.................... // Constants used in SETUP_SPI() are:
.................... #define SPI_MASTER 0x20
.................... #define SPI_SLAVE 0x24
.................... #define SPI_SCK_IDLE_HIGH 0x10
.................... #define SPI_SCK_IDLE_LOW 0x00
.................... #define SPI_CLK_DIV_4 0x00
.................... #define SPI_CLK_DIV_16 0x01
.................... #define SPI_CLK_DIV_64 0x02
.................... #define SPI_CLK_T2 0x03
.................... #define SPI_SS_DISABLED 0x01
....................
.................... #define SPI_XMIT_IDLE_TO_ACTIVE 0x0000
.................... #define SPI_XMIT_ACTIVE_TO_IDLE 0x4000
....................
.................... #define SPI_SAMPLE_AT_MIDDLE 0x0000
.................... #define SPI_SAMPLE_AT_END 0x8000
....................
.................... //The following are provided for compatibility
.................... #define SPI_L_TO_H SPI_SCK_IDLE_LOW
.................... #define SPI_H_TO_L SPI_SCK_IDLE_HIGH
.................... #define SPI_XMIT_L_TO_H SPI_XMIT_ACTIVE_TO_IDLE
....................
.................... ////////////////////////////////////////////////////////////////// UART
.................... // Constants used in setup_uart() are:
.................... // FALSE - Turn UART off
.................... // TRUE - Turn UART on
.................... #define UART_ADDRESS 2
.................... #define UART_DATA 4
.................... #define UART_AUTODETECT 8
.................... #define UART_AUTODETECT_NOWAIT 9
.................... #define UART_WAKEUP_ON_RDA 10
.................... #define UART_SEND_BREAK 13
.................... ////////////////////////////////////////////////////////////////// COMP
.................... // Comparator Variables: C1OUT, C2OUT
.................... // Constants used in setup_comparator() are:
.................... //
.................... #define NC_NC_NC_NC 0x404
.................... #define NC_NC 0x404
....................
.................... //Pick one constant for COMP1
.................... #define CP1_A0_A3 0x4000080
.................... #define CP1_A1_A3 0x0100081
.................... #define CP1_B3_A3 0x0200082
.................... #define CP1_B1_A3 0x0400083
.................... #define CP1_A0_VREF 0x4000084
.................... #define CP1_A1_VREF 0x0100085
.................... #define CP1_B3_VREF 0x0200086
.................... #define CP1_B1_VREF 0x0400087
.................... //Optionally OR with one or both of the following
.................... #define CP1_OUT_ON_A4 0x2000020
.................... #define CP1_INVERT 0x0000010
.................... #define CP1_FAST 0x0000008
....................
.................... //OR with one constant for COMP2
.................... #define CP2_A0_A2 0x4008000
.................... #define CP2_A1_A2 0x0108100
.................... #define CP2_B3_A2 0x0208200
.................... #define CP2_B1_A2 0x0408300
.................... #define CP2_A0_VREF 0x4008400
.................... #define CP2_A1_VREF 0x0108500
.................... #define CP2_B3_VREF 0x0208600
.................... #define CP2_B1_VREF 0x0408700
.................... //Optionally OR with one or both of the following
.................... #define CP2_OUT_ON_A5 0x0082000
.................... #define CP2_INVERT 0x0001000
.................... #define CP2_FAST 0x0000800
....................
.................... #bit C1OUT = 0xF79.6
.................... #bit C2OUT = 0xF78.6
....................
.................... ////////////////////////////////////////////////////////////////// VREF
.................... // Constants used in setup_low_volt_detect() are:
.................... //
.................... #define LVD_LVDIN 0x1F
.................... #define LVD_47 0x1E
.................... #define LVD_43 0x1D
.................... #define LVD_41 0x1C
.................... #define LVD_38 0x1B
.................... #define LVD_36 0x1A
.................... #define LVD_34 0x19
.................... #define LVD_32 0x18
.................... #define LVD_29 0x17
.................... #define LVD_28 0x16
.................... #define LVD_27 0x15
.................... #define LVD_25 0x14
.................... #define LVD_24 0x13
.................... #define LVD_22 0x12
.................... #define LVD_20 0x11
.................... #define LVD_18 0x10
....................
.................... #define LVD_TRIGGER_BELOW 0
.................... #define LVD_TRIGGER_ABOVE 0x80
....................
.................... ////////////////////////////////////////////////////////////////// DAC
.................... // Digital to Analog Functions: SETUP_DAC(), DAC_WRITE()
.................... // Constants used in SETUP_DAC() are:
.................... #define DAC_OFF 0
.................... #define DAC_VSS_VDD 0x80
.................... #define DAC_VREF_VDD 0x81
.................... #define DAC_VSS_VREF 0x84
.................... #define DAC_VREF_VREF 0x85
.................... #define DAC_VSS_FVR 0x88
.................... #define DAC_FVR_VREF 0x89
.................... // The following may be OR'ed in with the above using |
.................... #define DAC_OUTPUT 0x20
.................... #define DAC_LVP_POS 0x40
.................... #define DAC_LVP_NEG 0
....................
....................
.................... ////////////////////////////////////////////////////////////////// INTERNAL RC
.................... // Constants used in setup_oscillator() are:
.................... #define OSC_PLL_ON 0x4000
.................... #define OSC_PLL_OFF 0
.................... #define OSC_31250 0x8000
.................... #define OSC_250KHZ 0x10
.................... #define OSC_500KHZ 0x20
.................... #define OSC_1MHZ 0x30
.................... #define OSC_2MHZ 0x40
.................... #define OSC_4MHZ 0x50
.................... #define OSC_8MHZ 0x60
.................... #define OSC_16MHZ 0x70
.................... #define OSC_32MHZ 0x4060
.................... #define OSC_64MHZ 0x4070
.................... // The following may be OR'ed in with the above using |
.................... #define OSC_TIMER1 1
.................... #define OSC_INTRC 2
.................... #define OSC_NORMAL 0
.................... // The following may be OR'ed in with the above using |
.................... #define OSC_IDLE_MODE 0x80
.................... // A second optional parameter may be used with this part to fine
.................... // tune the speed (signed int,0-31)
.................... // Result may be (ignore all other bits)
.................... #define OSC_STATE_STABLE 4
.................... #define OSC_STATE_EXT_RUNNING 8
....................
....................
.................... ////////////////////////////////////////////////////////////////// ADC
.................... // ADC Functions: SETUP_ADC(), SETUP_ADC_PORTS() (aka SETUP_PORT_A),
.................... // SET_ADC_CHANNEL(), READ_ADC()
.................... // Constants used for SETUP_ADC() are:
.................... #define ADC_OFF 0 // ADC Off
.................... #define ADC_CLOCK_DIV_2 0x100
.................... #define ADC_CLOCK_DIV_4 0x04
.................... #define ADC_CLOCK_DIV_8 0x01
.................... #define ADC_CLOCK_DIV_16 0x05
.................... #define ADC_CLOCK_DIV_32 0x02
.................... #define ADC_CLOCK_DIV_64 0x06
.................... #define ADC_CLOCK_INTERNAL 0x07 // Internal 2-6us
.................... // The following may be OR'ed in with the above using |
.................... #define ADC_TAD_MUL_0 0x00
.................... #define ADC_TAD_MUL_2 0x08
.................... #define ADC_TAD_MUL_4 0x10
.................... #define ADC_TAD_MUL_6 0x18
.................... #define ADC_TAD_MUL_8 0x20
.................... #define ADC_TAD_MUL_12 0x28
.................... #define ADC_TAD_MUL_16 0x30
.................... #define ADC_TAD_MUL_20 0x38
....................
.................... // Constants used in SETUP_ADC_PORTS() are:
.................... #define sAN0 0x10000 //| A0 \\!"K50"
.................... #define sAN1 0x20000 //| A1 \\!"K50"
.................... #define sAN2 0x40000 //| A2 \\!"K50"
.................... #define sAN3 0x80000 //| A4
.................... #define sAN4 0x100000 //| C0
.................... #define sAN5 0x200000 //| C1
.................... #define sAN6 0x400000 //| C2
.................... #define sAN7 0x800000 //| C3
.................... #define sAN8 0x1 //| C6
.................... #define sAN9 0x2 //| C7
.................... #define sAN10 0x4 //| B4
.................... #define sAN11 0x8 //| B5
.................... #define NO_ANALOGS 0 // None
.................... #define ALL_ANALOG 0xF00FF // A0 A1 A2 A4 C0 C1 C2 C3 C6 C7 B4 B5
....................
.................... // One of the following may be OR'ed in with the above using |
.................... #define VSS_VDD 0x000 // Range 0-Vdd
.................... #define VREF_VREF 0x500 // Range VrefL-VrefH
.................... #define VSS_VREF 0x400 // Range 0-VrefH
.................... #define VREF_VDD 0x100 // Range VrefL-Vdd
....................
....................
.................... // Constants used in READ_ADC() are:
.................... #define ADC_START_AND_READ 7 // This is the default if nothing is specified
.................... #define ADC_START_ONLY 1
.................... #define ADC_READ_ONLY 6
....................
....................
....................
....................
....................
.................... ////////////////////////////////////////////////////////////////// INT
.................... // Interrupt Functions: ENABLE_INTERRUPTS(), DISABLE_INTERRUPTS(),
.................... // CLEAR_INTERRUPT(), INTERRUPT_ACTIVE(),
.................... // EXT_INT_EDGE()
.................... //
.................... // Constants used in EXT_INT_EDGE() are:
.................... #define L_TO_H 0x40
.................... #define H_TO_L 0
.................... // Constants used in ENABLE/DISABLE_INTERRUPTS() are:
.................... #define GLOBAL 0xF2C0
.................... #define PERIPH 0xF240
.................... #define INT_RTCC 0x00F220
.................... #define INT_TIMER0 0x00F220
.................... #define INT_TIMER1 0x009D01
.................... #define INT_TIMER2 0x009D02
.................... #define INT_TIMER3 0x00A002
.................... #define INT_EXT_L2H 0x5000F210
.................... #define INT_EXT_H2L 0x6000F210
.................... #define INT_EXT 0x00F210
.................... #define INT_EXT1_L2H 0x5001F008
.................... #define INT_EXT1_H2L 0x6001F008
.................... #define INT_EXT1 0x00F008
.................... #define INT_EXT2_L2H 0x5002F010
.................... #define INT_EXT2_H2L 0x6002F010
.................... #define INT_EXT2 0x00F010
.................... #define INT_RB 0x01FFF208
.................... #define INT_AD 0x009D40
.................... #define INT_RDA 0x009D20
.................... #define INT_TBE 0x009D10
.................... #define INT_SSP 0x009D08
.................... #define INT_CCP1 0x009D04
.................... #define INT_CCP2 0x00A001
.................... #define INT_BUSCOL 0x00A008
.................... #define INT_COMP 0x00A040
.................... #define INT_EEPROM 0x00A010
.................... #define INT_TBE2 0x00A310
.................... #define INT_RDA2 0x00A320
.................... #define INT_OSCF 0x00A080
.................... #define INT_HLVD 0x00A004
.................... #define INT_BUSCOL2 0x00A340
.................... #define INT_COMP2 0x00A020
.................... #define INT_SSP2 0x00A380
.................... #define INT_TIMER4 0x007D01
.................... #define INT_TIMER5 0x007D02
.................... #define INT_TIMER6 0x007D04
.................... #define INT_CCP3 0x007A01
.................... #define INT_CCP4 0x007A02
.................... #define INT_CCP5 0x007A04
.................... #define INT_TMR1G 0x00A301
.................... #define INT_TMR3G 0x00A302
.................... #define INT_TMR5G 0x00A304
.................... #define INT_CTMU 0x00A308
.................... #define INT_RB4 0x010F208
.................... #define INT_RB5 0x020F208
.................... #define INT_RB6 0x040F208
.................... #define INT_RB7 0x080F208
....................
.................... #list
....................
.................... #fuses INTRC_IO, NOWDT, NOBROWNOUT, NOPUT, NOLVP, NOMCLR, PLLEN
.................... #USE delay(internal=16Mhz, clock=64Mhz)
*
000C6: CLRF FEA
000C8: MOVLW 1C
000CA: MOVWF FE9
000CC: MOVF FEF,W
000CE: BZ 00EC
000D0: MOVLW 14
000D2: MOVWF 01
000D4: CLRF 00
000D6: DECFSZ 00,F
000D8: BRA 00D6
000DA: DECFSZ 01,F
000DC: BRA 00D4
000DE: MOVLW BF
000E0: MOVWF 00
000E2: DECFSZ 00,F
000E4: BRA 00E2
000E6: BRA 00E8
000E8: DECFSZ FEF,F
000EA: BRA 00D0
000EC: GOTO 015C (RETURN)
....................
....................
.................... #use RS232 (STREAM=PC_SERIAL, baud=115200, UART1, ERRORS)
....................
.................... //////////////////////////////////////////////////////////////////////////////////////////////////////////////
.................... // Interrupts
.................... //////////////////////////////////////////////////////////////////////////////////////////////////////////////
.................... #INT_RDA
.................... void pc_comms_isr() {
.................... fprintf(PC_SERIAL, "B");
*
000AE: MOVLW 42
000B0: BTFSS F9E.4
000B2: BRA 00B0
000B4: MOVWF FAD
.................... }
....................
....................
000B6: BCF F9E.5
000B8: GOTO 0060
.................... void main () {
*
00114: CLRF FF8
00116: BCF FD0.7
00118: BSF 07.7
0011A: CLRF FEA
0011C: CLRF FE9
0011E: MOVLW 70
00120: MOVWF FD3
00122: MOVLW 40
00124: MOVWF F9B
00126: MOVF FD3,W
00128: CLRF 19
0012A: BSF FB8.3
0012C: MOVLW 8A
0012E: MOVWF FAF
00130: MOVLW 00
00132: MOVWF FB0
00134: MOVLW A6
00136: MOVWF FAC
00138: MOVLW 90
0013A: MOVWF FAB
0013C: MOVLW 00
0013E: MOVWF F7E
00140: BCF FC1.0
00142: BCF FC1.1
00144: BCF FC1.2
00146: BCF FC1.3
00148: MOVLW 00
0014A: MOVWF F7F
0014C: CLRF F78
0014E: CLRF F79
00150: CLRF 1A
.................... int8 i = 0x00;
.................... //setup_oscillator(OSC_64MHZ|OSC_INTRC);
....................
.................... delay_ms(1000);
00152: MOVLW 04
00154: MOVWF 1B
00156: MOVLW FA
00158: MOVWF 1C
0015A: BRA 00C6
0015C: DECFSZ 1B,F
0015E: BRA 0156
....................
.................... fprintf(PC_SERIAL, "Started!");
00160: MOVLW BC
00162: MOVWF FF6
00164: MOVLW 00
00166: MOVWF FF7
00168: BRA 00F0
....................
....................
.................... enable_interrupts(INT_RDA);
0016A: BSF F9D.5
.................... enable_interrupts(GLOBAL);
0016C: MOVLW C0
0016E: IORWF FF2,F
....................
.................... while (TRUE) {}
00170: BRA 0170
.................... }
00172: SLEEP
Configuration Fuses:
Word 1: F800 INTRC_IO PLLEN FCMEN PRIMARY IESO
Word 2: 3C19 NOBROWNOUT NOWDT NOPUT BORV20 WDT32768
Word 3: 3F00 NOMCLR PBADEN NODELAYINTOSC CCP2B5 CCP2C1 TIMER3C0 LPT1OSC
Word 4: 0081 STVREN NODEBUG NOLVP NOXINST
Word 5: C00F NOPROTECT NOCPB NOCPD
Word 6: E00F NOWRT NOWRTC NOWRTD NOWRTB
Word 7: 400F NOEBTR NOEBTRB |
I couldn't see anything obvious where it was disabling the analog features, so I added this and still nothing:
| Code: |
.........
delay_ms(1000);
#asm
MOVLW 0xFC
MOVWF 0xF3A
#endasm
fprintf(PC_SERIAL, "Started!");
......... |
|
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Ttelmah
Joined: 11 Mar 2010
Posts: 19369
|
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| Posted: Wed Jan 30, 2013 1:25 pm |
|
|
The CCS command is setup_adc_ports(NO_ANALOGS);
It's definitely using the UART.
Have you tried a slower baud rate?. Look at the chip's errata. It can miss the start bit, unless BRGH=1 and BRG16=1. I don't know if your baud rate is possible within this restriction.....
Best Wishes |
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Geps
Joined: 05 Jul 2010
Posts: 129
|
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| Posted: Thu Jan 31, 2013 1:23 am |
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Thanks Ttelmah,
Fixed by upgrading to 4.125. |
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