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diode_blade
Joined: 18 Aug 2014
Posts: 55
Location: Sheffield, South Yorkshire
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| SPI setup |
 Posted: Sat Jun 09, 2018 3:50 am |
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//**********************************************************/
// HARDWARE AND COMIPLER
// MIKROE ELEKTRONIKA CLICKER 2 BOARD
// DEVICE 18F67K40
// MIKROE RTC 5 CLICK BOARD IN SOCKET 1 ON CLICKER 2 BOARD
// KS0108 128*64 GLCD
// microSD click PID: MIKROE-924 IN SOCKET 2 ON CLICKER 2
// MPLABX V4.15
// MPLAB V8 DOES NOT SUPPORT ABOVE DEVICE
// COMPILER CCS C V5.078
//**********************************************************/
Mods made to device header file
| Code: |
#byte PMD_0 = getenv("SFR:PMD0")
//for all the pmd's
etc
#byte SLR_CONA = getenv("SFR:SLRCONA")
//for all the slr's
etc
#byte LAT_A = getenv("SFR:LATA")
//for all the lat regs
etc
//and the lat pins
#define LAT_A0 31682
//for all the lat pins
etc
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| Code: |
#include "18F67K40.h"
#device PASS_STRINGS = IN_RAM
#use delay(clock=64000000)
#pin_select U1RX=PIN_C6
#pin_select U1TX=PIN_C7
#use rs232(baud=9600, UART1, errors)
#Fuses HS,RSTOSC_EXT_PLL // 16 MHz xtal,PLL enabled for ext xtal
#Fuses NOCLKOUT,NOCKS
#Fuses NOFCMEN,MCLR,NOPUT,NOLPBOR,NOBROWNOUT
#Fuses NOZCDDIS,PPS1WAY
#Fuses DEBUG
#Fuses NOWRT,NOWRTC,NOWRTB,NOWRTD
#Fuses NOSCANE,NOLVP,NOPROTECT,NOCPD
#Fuses NOEBTR,NOEBTRB,NOLVP
#define FAST_GLCD // Try commenting this out to see the differences
const char *SD_IN_STR = "SD CARD IN";
const char *SD_OUT_STR = "NO SD CARD";
//PPS selection for MSSP1
#pin_select SDI1=PIN_C4 //DATA COMING IN FROM SLAVE TO PIC MASTER
#pin_select SDO1=PIN_C5 //DATA FROM MASTER TO SLAVE I.E OUTGOING FROM PIC
#pin_select SCK1OUT=PIN_C3 //DATA CLOCK
#use spi(SPI1,FORCE_HW,MASTER,BITS=8, MODE=0,baud=100000) // initial spi setup
#define debug_led LAT_D7
#define SD_INSERT PIN_A1
#include "HDM64GS12.c"
#include "graphics.c"
#include "RTC5v2.c"
#include "math.h"
#include "stdlib.h"
#include "mmcsd.c"
//FAT library.
#include "fat.c"
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Hardware debugger: ICD3
Got the PIC setup and the led flashing on/off every 0.5 sec so I knew that I had the Osc setup properly with the PLL.
The I used the setup_spi() functions to get the RTC 5 click board working and display the time/date on a 128*64 GLCD.
I have now switched to the #use spi (created another RTC 5 Source file and changed all the spi_read and spi_write calls to spi_xfer) .
Simple question but just a bit unsure, have done a lot of digging around on here, am I correct that in the #use(MASTER,SPI1....
The SP1 automatically uses the hardware SPI and that I don't need to include the FORCE_HW in the #use setup.
The Program compiled and worked after changing to #use spi
This is so that I can now work with the fat.c and mmscd.c.
Sorry if a bit long winded for a simple question.
Regards Dave |
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Sat Jun 09, 2018 4:50 am |
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I can't say yes or no however when in doubt YOU should set options and fuses are YOU need them to be. Do NOT rely on the compiler as the 'defaults' were created by another human. It costs you nothing to type in the options you want AND it'll remind you that , in this case, SPI should be on the HW pins and the code very small.
Having started this gig when ASR-33s and papertape where new, I learned NOT to rely on other's ideas of 'defaults'.
Also, dump the listing, see the code, it'll quickly be obvious how SPI is being done.
Jay |
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diode_blade
Joined: 18 Aug 2014
Posts: 55
Location: Sheffield, South Yorkshire
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| Posted: Sat Jun 09, 2018 6:05 am |
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| temtronic wrote: | I can't say yes or no however when in doubt YOU should set options and fuses are YOU need them to be. Do NOT rely on the compiler as the 'defaults' were created by another human. It costs you nothing to type in the options you want AND it'll remind you that , in this case, SPI should be on the HW pins and the code very small.
Having started this gig when ASR-33s and papertape where new, I learned NOT to rely on other's ideas of 'defaults'.
Also, dump the listing, see the code, it'll quickly be obvious how SPI is being done.
Jay |
Damn of course , Thanks Jay
my brain cell must have had a senior moment..
Regards
Dave
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Sat Jun 09, 2018 6:16 am |
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yeah, I have LOTS of 'senior's moments' these dayze......
way too many PICs to play with today..... |
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diode_blade
Joined: 18 Aug 2014
Posts: 55
Location: Sheffield, South Yorkshire
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| Posted: Mon Jun 11, 2018 11:56 pm |
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Thanks Jay did as suggested and everything is correct.
Thread closed
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