added bootloader force entry by input pin, projects changed back to build for the PIC18F2550
This commit is contained in:
@@ -49,7 +49,7 @@
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<conf name="default" type="2">
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<toolsSet>
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<developmentServer>localhost</developmentServer>
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<targetDevice>PIC18F4550</targetDevice>
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<targetDevice>PIC18F2550</targetDevice>
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<targetHeader></targetHeader>
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<targetPluginBoard></targetPluginBoard>
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<platformTool>PICkit3PlatformTool</platformTool>
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@@ -5,10 +5,19 @@
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* Created on August 9, 2019, 6:14 PM
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*/
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#include <xc.h>
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#include "usb.h"
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#include "bootloader.h"
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unsigned int uint_delay_counter;
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/**
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* Comment this out to not check the bootloader entry override switch.
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* THIS IS NOT RECOMMENDED!!
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* If disabled the ONLY way to enter firmware update mode is by a jump from the application code.
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* IF YOU FLASH BROKEN APPLICATION FIRMWARE YOU WILL HAVE A BRICK!!
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* At that point the device can only be reprogrammed by a dedicated programmer such as the ICD or Pickit 3.
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*/
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#define ENABLE_HARDWARE_MODE_OVERRIDE
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/* Private prototypes */
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void main(void);
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@@ -19,11 +28,26 @@ const unsigned int FlashSignatureWord __at(APP_SIGNATURE_ADDRESS) = APP_SIGNATUR
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void main(void)
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{
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/**
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* TODO: implement hardware IO-based method for forcing entry into bootloader
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*/
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#ifdef ENABLE_HARDWARE_MODE_OVERRIDE
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// immediately enter bootloader's firmware update mode if override switch is pressed
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PORTA = 0x00; // initialize PORTA by clearing output data latches
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ADCON1 = 0x0F; // disable analog functionality on PORTA pins
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CMCON = 0x07; // disable comparators on PORTA pins
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TRISAbits.RA0 = 1; // configure pin RA0 as input
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if (PORTAbits.RA0 == 1)
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{
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// switch is NOT pressed. bootloader will execute as normal
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ADCON1 = 0x00; // restore ADCON1 register to default state
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TRISAbits.RA0 = 0; // restore RA0 pin direction to default state (output)
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// start the signature check
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goto DoFlashSignatureCheck;
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}
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else
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{
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// switch IS pressed. bypass signature check and immediately enter firmware update mode
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BootMain();
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}
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#endif
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// normal operation: verify the firmware signature is valid. if it isn't enter
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// bootloader (fw update) mode so valid firmware can be flashed
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DoFlashSignatureCheck:
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@@ -50,7 +74,7 @@ DoFlashSignatureCheck:
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BootMain();
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}
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void BootMain(void) __at(0x30)
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void BootMain(void) __at(BOOTLOADER_ENTRYPOINT)
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{
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//Make sure interrupts are disabled for this code (could still be on,
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//if the application firmware jumped into the bootloader via software methods)
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@@ -24,76 +24,6 @@
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*/
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//#include "usb.h"
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#ifdef PIC18F2550
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// PIC18F2550 Configuration Bit Settings
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// 'C' source line config statements
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// CONFIG1L
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#pragma config PLLDIV = 3 // PLL Prescaler Selection bits (Divide by 3 (12 MHz oscillator input))
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#pragma config CPUDIV = OSC3_PLL4// System Clock Postscaler Selection bits ([Primary Oscillator Src: /3][96 MHz PLL Src: /4])
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#pragma config USBDIV = 2 // USB Clock Selection bit (used in Full-Speed USB mode only; UCFG:FSEN = 1) (USB clock source comes from the 96 MHz PLL divided by 2)
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// CONFIG1H
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#pragma config FOSC = HSPLL_HS // Oscillator Selection bits (HS oscillator, PLL enabled (HSPLL))
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#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor disabled)
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#pragma config IESO = OFF // Internal/External Oscillator Switchover bit (Oscillator Switchover mode disabled)
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// CONFIG2L
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#pragma config PWRT = OFF // Power-up Timer Enable bit (PWRT disabled)
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#pragma config BOR = ON // Brown-out Reset Enable bits (Brown-out Reset enabled in hardware only (SBOREN is disabled))
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#pragma config BORV = 3 // Brown-out Reset Voltage bits (Minimum setting 2.05V)
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#pragma config VREGEN = ON // USB Voltage Regulator Enable bit (USB voltage regulator enabled)
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// CONFIG2H
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#pragma config WDT = OFF // Watchdog Timer Enable bit (WDT enabled)
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#pragma config WDTPS = 32768 // Watchdog Timer Postscale Select bits (1:32768)
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// CONFIG3H
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#pragma config CCP2MX = ON // CCP2 MUX bit (CCP2 input/output is multiplexed with RC1)
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#pragma config PBADEN = ON // PORTB A/D Enable bit (PORTB<4:0> pins are configured as analog input channels on Reset)
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#pragma config LPT1OSC = OFF // Low-Power Timer 1 Oscillator Enable bit (Timer1 configured for higher power operation)
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#pragma config MCLRE = ON // MCLR Pin Enable bit (MCLR pin enabled; RE3 input pin disabled)
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// CONFIG4L
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#pragma config STVREN = ON // Stack Full/Underflow Reset Enable bit (Stack full/underflow will cause Reset)
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#pragma config LVP = OFF // Single-Supply ICSP Enable bit (Single-Supply ICSP enabled)
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#pragma config XINST = OFF // Extended Instruction Set Enable bit (Instruction set extension and Indexed Addressing mode disabled (Legacy mode))
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// CONFIG5L
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#pragma config CP0 = OFF // Code Protection bit (Block 0 (000800-001FFFh) is not code-protected)
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#pragma config CP1 = OFF // Code Protection bit (Block 1 (002000-003FFFh) is not code-protected)
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#pragma config CP2 = OFF // Code Protection bit (Block 2 (004000-005FFFh) is not code-protected)
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#pragma config CP3 = OFF // Code Protection bit (Block 3 (006000-007FFFh) is not code-protected)
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// CONFIG5H
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#pragma config CPB = OFF // Boot Block Code Protection bit (Boot block (000000-0007FFh) is not code-protected)
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#pragma config CPD = OFF // Data EEPROM Code Protection bit (Data EEPROM is not code-protected)
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// CONFIG6L
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#pragma config WRT0 = OFF // Write Protection bit (Block 0 (000800-001FFFh) is not write-protected)
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#pragma config WRT1 = OFF // Write Protection bit (Block 1 (002000-003FFFh) is not write-protected)
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#pragma config WRT2 = OFF // Write Protection bit (Block 2 (004000-005FFFh) is not write-protected)
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#pragma config WRT3 = OFF // Write Protection bit (Block 3 (006000-007FFFh) is not write-protected)
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// CONFIG6H
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#pragma config WRTC = OFF // Configuration Register Write Protection bit (Configuration registers (300000-3000FFh) are not write-protected)
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#pragma config WRTB = OFF // Boot Block Write Protection bit (Boot block (000000-0007FFh) is not write-protected)
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#pragma config WRTD = OFF // Data EEPROM Write Protection bit (Data EEPROM is not write-protected)
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// CONFIG7L
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#pragma config EBTR0 = OFF // Table Read Protection bit (Block 0 (000800-001FFFh) is not protected from table reads executed in other blocks)
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#pragma config EBTR1 = OFF // Table Read Protection bit (Block 1 (002000-003FFFh) is not protected from table reads executed in other blocks)
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#pragma config EBTR2 = OFF // Table Read Protection bit (Block 2 (004000-005FFFh) is not protected from table reads executed in other blocks)
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#pragma config EBTR3 = OFF // Table Read Protection bit (Block 3 (006000-007FFFh) is not protected from table reads executed in other blocks)
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// CONFIG7H
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#pragma config EBTRB = OFF // Boot Block Table Read Protection bit (Boot block (000000-0007FFh) is not protected from table reads executed in other blocks)
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// #pragma config statements should precede project file includes.
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// Use project enums instead of #define for ON and OFF.
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#else
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// PIC18F4550 Configuration Bit Settings
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@@ -101,11 +31,11 @@
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// CONFIG1L
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#pragma config PLLDIV = 3 // PLL Prescaler Selection bits (Divide by 3 (12 MHz oscillator input))
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#pragma config CPUDIV = OSC3_PLL4// System Clock Postscaler Selection bits ([Primary Oscillator Src: /3][96 MHz PLL Src: /4])
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#pragma config CPUDIV = OSC4_PLL6// System Clock Postscaler Selection bits ([Primary Oscillator Src: /4][96 MHz PLL Src: /6])
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#pragma config USBDIV = 2 // USB Clock Selection bit (used in Full-Speed USB mode only; UCFG:FSEN = 1) (USB clock source comes from the 96 MHz PLL divided by 2)
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// CONFIG1H
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#pragma config FOSC = HSPLL_HS // Oscillator Selection bits (HS oscillator, PLL enabled (HSPLL))
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#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator (HS))
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#pragma config FCMEN = OFF // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor disabled)
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#pragma config IESO = OFF // Internal/External Oscillator Switchover bit (Oscillator Switchover mode disabled)
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@@ -128,7 +58,9 @@
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// CONFIG4L
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#pragma config STVREN = ON // Stack Full/Underflow Reset Enable bit (Stack full/underflow will cause Reset)
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#pragma config LVP = OFF // Single-Supply ICSP Enable bit (Single-Supply ICSP disabled)
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#ifdef PIC18F4550
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#pragma config ICPRT = OFF // Dedicated In-Circuit Debug/Programming Port (ICPORT) Enable bit (ICPORT disabled)
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#endif
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#pragma config XINST = OFF // Extended Instruction Set Enable bit (Instruction set extension and Indexed Addressing mode disabled (Legacy mode))
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// CONFIG5L
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@@ -165,7 +97,3 @@
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// Use project enums instead of #define for ON and OFF.
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#include <xc.h>
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#endif
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@@ -59,7 +59,7 @@
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<conf name="bootloader_only" type="2">
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<toolsSet>
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<developmentServer>localhost</developmentServer>
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<targetDevice>PIC18F4550</targetDevice>
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<targetDevice>PIC18F2550</targetDevice>
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<targetHeader></targetHeader>
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<targetPluginBoard></targetPluginBoard>
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<platformTool>PICkit3PlatformTool</platformTool>
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@@ -141,7 +141,7 @@
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<property key="asmlist" value="true"/>
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<property key="default-bitfield-type" value="true"/>
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<property key="default-char-type" value="true"/>
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<property key="define-macros" value=""/>
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<property key="define-macros" value="LINK_FOR_BOOTLOADER"/>
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<property key="disable-optimizations" value="true"/>
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<property key="extra-include-directories"
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value="..\src;..\..\common_src\framework\usb\inc;..\..\common_src"/>
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@@ -275,7 +275,7 @@
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<conf name="standalone" type="2">
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<toolsSet>
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<developmentServer>localhost</developmentServer>
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<targetDevice>PIC18F4550</targetDevice>
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<targetDevice>PIC18F2550</targetDevice>
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<targetHeader></targetHeader>
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<targetPluginBoard></targetPluginBoard>
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<platformTool>PICkit3PlatformTool</platformTool>
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